JP6435612B2 - Imaging device and imaging apparatus - Google Patents

Description

  The present invention relates to an imaging element and an imaging apparatus.

Conventionally, a photoelectric conversion unit in a unit pixel has been divided into four in one direction (see, for example, Patent Document 1).
[Prior art documents]
[Patent Literature]
[Patent Document 1] JP 2008-134413 A

  However, if the photoelectric conversion unit in the unit pixel is divided into four in one direction, the light receiving area becomes small, and thus the sensitivity of the image sensor decreases.

  In the first aspect of the present invention, the imaging device includes a plurality of photoelectric conversion blocks each having a plurality of photoelectric conversion units arranged two-dimensionally, and each photoelectric conversion block is incident at a first wavelength. A first photoelectric conversion unit that includes a first photoelectric conversion unit that photoelectrically converts light and a second photoelectric conversion unit that photoelectrically converts incident light having a second wavelength, and is included in the first photoelectric conversion block And a position where the first photoelectric conversion unit included in the second photoelectric conversion block adjacent to the first photoelectric conversion block is symmetrical with respect to the boundary between the first photoelectric conversion block and the second photoelectric conversion block An image pickup device disposed in is provided.

  In the 2nd aspect of this invention, an imaging device provided with the image pick-up element in a 1st aspect is provided.

  It should be noted that the above summary of the invention does not enumerate all the necessary features of the present invention. In addition, a sub-combination of these feature groups can also be an invention.

2 is a cross-sectional view of a single-lens reflex camera 400. FIG. 2 is a block diagram illustrating a configuration example of an image sensor 200. FIG. It is a figure which shows a part of imaging chip 10 in 1st Embodiment, and the area | region which expanded the said part. It is a figure which shows the 4th photoelectric conversion block 12-4 from the 1st photoelectric conversion block 12-1 in the area | region 20. FIG. 12 is a diagram illustrating another example of the first photoelectric conversion block 12-1 to the fourth photoelectric conversion block 12-4 in the region 20. FIG. It is a figure which shows the range of the light spot irradiated to the 1st and 2nd photoelectric conversion block 12 according to the magnitude | size of F value. It is a figure which shows the position of the light spot irradiated to the 1st photoelectric conversion block 12-1 according to the position of an exit pupil.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is a cross-sectional view of a single-lens reflex camera 400. A single-lens reflex camera 400 as an imaging apparatus includes an imaging element 200. The single-lens reflex camera 400 includes a lens unit 500 and a camera body 600. A lens unit 500 is attached to the camera body 600. The lens unit 500 includes an optical system arranged along the optical axis 410 in the lens barrel, and guides an incident subject light flux to the image sensor 200 of the camera body 600.

  In this example, a single-lens reflex camera 400 will be described as an example of an imaging device, but the camera body 600 may be regarded as an imaging device. The imaging device is not limited to the interchangeable lens camera including the mirror unit, but may be a interchangeable lens camera that does not include the mirror unit or a lens-integrated camera regardless of the presence or absence of the mirror unit.

  The x direction, y direction, and z direction in FIG. 1 are directions perpendicular to each other. In this specification, the x direction may be the row direction in the image sensor 200, and the y direction may be the column direction in the image sensor 200. Further, the x direction may be a first direction described later, and the y direction may be a second direction described later. Furthermore, the x direction may be read as the horizontal direction, and the y direction may be read as the vertical direction. The z direction is parallel to the optical axis 410. The z direction may be read as the third direction described later.

  The camera body 600 includes a mirror 672 behind the body mount 660 coupled to the lens mount 550. The mirror 672 is pivotally supported between an oblique position obliquely provided to the subject light beam incident from the lens unit 500 and a retracted position retracted from the subject light beam.

  When the mirror 672 is in the oblique position, most of the subject light beam incident through the lens unit 500 is reflected by the mirror 672 and guided to the focus plate 652. The focus plate 652 is arranged at a position conjugate with the light receiving surface of the image sensor 200 and visualizes the subject image formed by the optical system of the lens unit 500. The subject image formed on the focus plate 652 is observed from the viewfinder 650 through the pentaprism 654 and the viewfinder optical system 656.

  The focus plate 652, the pentaprism 654, and the mirror 672 are supported by a mirror box 670 as a structure. The image sensor 200 is attached to the mirror box 670. When the mirror 672 is retracted to the retracted position and the front curtain and rear curtain of the shutter unit 340 are in the open state, the subject luminous flux that passes through the lens unit 500 reaches the light receiving surface of the image sensor.

  A body substrate 620 and a rear display unit 634 are sequentially disposed behind the image sensor 200. A rear display unit 634 employing a liquid crystal panel or the like appears on the rear surface of the camera body 600. Electronic circuits such as a CPU 622 and an image processing ASIC 624 are mounted on the body substrate 620. The output of the image sensor is delivered to the image processing ASIC 624.

  FIG. 2 is a block diagram illustrating a configuration example of the image sensor 200. The imaging element 200 includes an imaging chip 10 and a signal processing chip 30. A light beam enters the imaging chip 10 from the third direction. The imaging chip 10 is electrically connected to the signal processing chip 30 through the bumps 24. The imaging chip 10 converts a light beam incident from the third direction into an electrical signal and outputs an analog image signal. The analog image signal is output to the signal processing unit 32.

  The signal processing chip 30 is stacked on the imaging chip 10 in the third direction. The signal processing chip 30 includes a signal processing unit 32, an AD conversion unit 34, and a focus detection unit 36. The signal processing unit 32 performs predetermined analog signal processing on the analog image signal output from the imaging chip 10. The signal processing unit 32 includes an amplifier circuit and a CDS (correlated double sampling) circuit. The amplifier circuit amplifies the signal voltage value of the analog image signal. In addition, the CDS circuit corrects variations in the signal voltage value due to noise.

  The AD converter 34 converts the analog image signal output from the signal processor 32 into a digital image signal. The AD conversion unit 34 outputs the digital image signal to the focus detection unit 36 and the image processing ASIC 624.

  The focus detection unit 36 detects the focus position of the optical system through which the incident light has passed. Specifically, the focus detection unit 36 detects the image shift amount of the pair of images based on the digital image signal. Further, the focus detection unit 36 performs a conversion operation according to the proportional relationship between the distance between the center of gravity of the pair of distance measurement pupils and the distance measurement pupil distance to the image shift amount, and the deviation (decoding) of the current image formation surface with respect to the planned image formation surface. Focus amount). In order to adjust the defocus amount, the position of the lens unit 500 of the single-lens reflex camera 400 is adjusted.

  The image processing ASIC 624 performs various image processing using the memory 50 as a work space, and generates image data. For example, when generating image data in JPEG file format, compression processing is executed after white balance processing, gamma processing, and the like are performed. The generated image data is recorded in the recording unit, converted into a display signal, and displayed on the rear display unit 634 for a preset time.

  FIG. 3 is a diagram illustrating a part of the imaging chip 10 according to the first embodiment and a region in which the part is enlarged. The imaging chip 10 includes a plurality of photoelectric conversion units 16 that are two-dimensionally arranged. The photoelectric conversion units 16 are arranged in a matrix in the first direction and the second direction. In this example, the first direction and the second direction are not necessarily limited to the row direction and the column direction. The first direction and the second direction may be oblique to each other.

  The plurality of photoelectric conversion blocks 12 are provided on the imaging chip 10. Each of the plurality of photoelectric conversion blocks 12 includes a plurality of photoelectric conversion units 16 that are two-dimensionally arranged. One photoelectric conversion block 12 in this example has four photoelectric conversion units 16 in the first direction and four photoelectric conversion units 16 in the second direction. In FIG. 3, one photoelectric conversion block 12 is indicated by a rectangular broken line.

  One microlens 14 is provided in each of the plurality of photoelectric conversion blocks 12. That is, one microlens 14 is provided for 4 × 4 photoelectric conversion units 16 in the first direction and the second direction. One microlens 14 guides light incident through the lens unit 500 to the photoelectric conversion unit 16 provided correspondingly.

  Each photoelectric conversion block 12 includes a first photoelectric conversion unit 16-1 that performs photoelectric conversion of incident light having a first wavelength, and a second photoelectric conversion unit 16-2 that performs photoelectric conversion of incident light having a second wavelength. And a third photoelectric conversion unit 16-3 that photoelectrically converts incident light having a third wavelength. In the present example, the first photoelectric conversion unit 16-1 is the photoelectric conversion unit 16 provided corresponding to the green (G) filter. The second photoelectric conversion unit 16-2 and the third photoelectric conversion unit 16-3 are the photoelectric conversion units 16 provided corresponding to the red (R) and blue (B) filters, respectively. The color scheme is merely an example. A filter of a predetermined color may be provided corresponding to one photoelectric conversion unit 16. For example, the first photoelectric conversion unit 16-1 may be provided corresponding to a red (R) or blue (B) filter.

  The region 20 is a region having the first photoelectric conversion block 12-1, the second photoelectric conversion block 12-2, the third photoelectric conversion block 12-3, and the fourth photoelectric conversion block 12-4. . In this example, the second photoelectric conversion block 12-2 is adjacent to the first photoelectric conversion block 12-1 in the first direction. The third photoelectric conversion block 12-3 is adjacent to the first photoelectric conversion block 12-1 in the second direction. Furthermore, the fourth photoelectric conversion block 12-4 is adjacent to the third photoelectric conversion block 12-3 in the first direction and is adjacent to the second photoelectric conversion block 12-2 in the second direction.

  A plurality of regions 20 are arranged adjacent to each other in the imaging chip 10. In addition, the area | region 20 of this example has the four photoelectric conversion blocks 12, and the photoelectric conversion block 12 has the 4 * 4 photoelectric conversion part 16. FIG. However, the number of photoelectric conversion units 16 in one photoelectric conversion block 12 may be 6 × 6 or 8 × 8.

  FIG. 4 is a diagram illustrating the first photoelectric conversion block 12-1 to the fourth photoelectric conversion block 12-4 in the region 20. Note that, in the drawing, each photoelectric conversion block 12 is illustrated as being separated in FIG. 4, but each photoelectric conversion block 12 is disposed adjacently. A boundary between the first photoelectric conversion block 12-1 and the third photoelectric conversion block 12-3 and the second photoelectric conversion block 12-2 and the fourth photoelectric conversion block 12-4 is defined as a boundary 17. The boundary between the first photoelectric conversion block 12-1 and the second photoelectric conversion block 12-2 and the third photoelectric conversion block 12-3 and the fourth photoelectric conversion block 12-4 is defined as a boundary 18. . Further, an intersection point between the boundary 17 and the boundary 18 is defined as an intersection point 19.

  In this specification, the boundary of the photoelectric conversion block 12 corresponds to the boundary line of the photoelectric conversion unit 16. Therefore, the boundary of the photoelectric conversion block 12 is not a line crossing the photoelectric conversion unit 16 as a unit pixel. That is, the boundary where one photoelectric conversion unit 16 is divided, that is, the boundary of divided pixels, is not the boundary of the photoelectric conversion block 12 in this specification. Further, the fact that the photoelectric conversion unit 16 is symmetric with respect to the boundary means that the photoelectric conversion unit that photoelectrically converts the incident light having the same wavelength is in a position symmetrical with respect to the boundary 17 or the boundary 18.

  In this example, at least the first photoelectric conversion unit 16-1 included in the first photoelectric conversion block 12-1 and the first photoelectric conversion unit 16-1 included in the second photoelectric conversion block 12-2. Are arranged at symmetrical positions with respect to the boundary 17 between the first photoelectric conversion block 12-1 and the second photoelectric conversion block 12-2. Then, the focus detection unit 36 outputs at least one signal output from at least one first photoelectric conversion unit 16-1 in the first photoelectric conversion block 12-1 and the second photoelectric conversion block 12-2. The focal position of the optical system through which the incident light has passed is determined based on a signal output from at least one first photoelectric conversion unit 16-1 provided at a position symmetrical to the first photoelectric conversion unit 16-1. To detect.

  For example, G23 which is one of the first photoelectric conversion units 16-1 in the first photoelectric conversion block 12-1, and one of the first photoelectric conversion units 16-1 in the second photoelectric conversion block 12-2. G26, which is one, is arranged at a position symmetrical to the boundary 17. Accordingly, focus detection can be performed without the configuration in which the photoelectric conversion unit 16 is divided.

  The pair of photoelectric conversion units 16 disposed at positions symmetrical to the boundary 17 or the boundary 18 can be used for focus detection. For example, G23 in the first photoelectric conversion block 12-1 and G73 in the third photoelectric conversion block 12-3 are arranged at positions symmetrical with respect to the boundary 18. The G23 and G73 may also be used for focus detection.

  In addition, G26 in the second photoelectric conversion block 12-2 and G76 in the fourth photoelectric conversion block 12-4 are arranged at positions symmetrical to the boundary 18. Further, G 73 in the third photoelectric conversion block 12-3 and G 76 in the fourth photoelectric conversion block 12-4 are arranged at positions symmetrical with respect to the boundary 17.

  Thereby, without setting it as the structure which divides | segments the photoelectric conversion part 16, the direction which bisects the angle which a 1st direction, a 2nd direction, a 1st direction, and a 2nd direction make, and a 1st direction and a 2nd direction It is possible to detect the focus on a straight line parallel to any of the directions that bisect the angle formed by the opposite direction. The direction that bisects the angle formed by the first direction and the second direction is not limited to the direction that bisects the equiangularity.

  In this example, the plurality of photoelectric conversion units 16 that photoelectrically convert light of the same wavelength are symmetrical with respect to the boundary 17 between the blocks in the first photoelectric conversion block 12-1 and the second photoelectric conversion block 12-2. It is arranged at the position. Specifically, all the photoelectric conversion units 16 that photoelectrically convert light having the same wavelength are compared with the boundary 17 between the blocks in the first photoelectric conversion block 12-1 and the second photoelectric conversion block 12-2. You may arrange | position in the symmetrical position.

  Similarly, the plurality of photoelectric conversion units 16 that photoelectrically convert light of the same wavelength are symmetrical with respect to the boundary 18 between the blocks in the first photoelectric conversion block 12-1 and the third photoelectric conversion block 12-3. Placed in position. Further, the plurality of photoelectric conversion units 16 that photoelectrically convert light of the same wavelength are symmetrically positioned with respect to the boundary 18 between the blocks in the second photoelectric conversion block 12-2 and the fourth photoelectric conversion block 12-4. In the third photoelectric conversion block 12-3 and the fourth photoelectric conversion block 12-4, they are arranged at positions symmetrical with respect to the boundary 17 between the blocks. That is, all the photoelectric conversion units 16 that photoelectrically convert light of the same wavelength may be arranged at positions symmetrical with respect to the boundary 17 or the boundary 18. Accordingly, focus detection can be performed in any direction within a plane defined by the first direction and the second direction without using a configuration in which the photoelectric conversion unit 16 is divided.

  In this example, the first photoelectric conversion block 12-1 to the fourth photoelectric conversion block 12-4 have different Bayer arrays. In this specification, that the Bayer array is different between the photoelectric conversion blocks 12 means that the light having the same wavelength in the photoelectric conversion block 12 having the number of R, G, and B photoelectric conversion units 16 in a ratio of 1: 2: 1. This means that the arrangement of the photoelectric conversion units 16 that perform photoelectric conversion differs between the photoelectric conversion blocks 12. For example, in the first photoelectric conversion block 12-1, the leftmost photoelectric conversion unit 16 is R11. On the other hand, in the second photoelectric conversion block 12-2, the third photoelectric conversion block 12-3, and the fourth photoelectric conversion block 12-4, the upper left photoelectric conversion unit 16 has G15 and G51, respectively. , B55.

  Further, in the second photoelectric conversion block 12-2, the photoelectric conversion unit 16 adjacent in the first direction with respect to G15 which is the uppermost photoelectric conversion unit 16 is R16. On the other hand, as for the 3rd photoelectric conversion block 12-3, the photoelectric conversion part 16 adjacent to a 1st direction with respect to G51 which is the uppermost photoelectric conversion part 16 is B52. Each of the photoelectric conversion blocks 12 has the number of R, G, and B photoelectric conversion units 16 in a ratio of 1: 2: 1. Therefore, the arrangement of the photoelectric conversion units 16 that photoelectrically convert light of the same wavelength differs between the photoelectric conversion blocks 12.

  All the photoelectric conversion units 16 in each photoelectric conversion block 12 are symmetric with respect to the boundary 17 or the boundary 18. Therefore, the photoelectric conversion unit 16 of the photoelectric conversion block 12-1 and the photoelectric conversion unit 16 of the photoelectric conversion block 12-4 are symmetric with respect to the intersection 19 where the boundary 17 and the boundary 18 intersect. Similarly, the photoelectric conversion unit 16 of the photoelectric conversion block 12-2 and the photoelectric conversion unit 16 of the photoelectric conversion block 12-3 are symmetrical with respect to the intersection point 19.

  Therefore, the photoelectric conversion block 12 may be arranged point-symmetrically with respect to the intersection point 19. In this example, the first photoelectric conversion block 12-1 to the fourth photoelectric conversion block 12-4 are point symmetric with respect to the intersection 19. For example, the third photoelectric conversion block 12-3, the fourth photoelectric conversion block 12-4, and the second photoelectric conversion block 12-2 are arranged such that the first photoelectric conversion block 12-1 is at the intersection 19. , At positions rotated by 90 degrees, 180 degrees, and 270 degrees, respectively.

  In this example, the photoelectric conversion unit 16 in the unit pixel is not divided. As a result, advanced miniaturization technology is not required in the manufacture of the image sensor. Further, the read circuit is not more complicated than the conventional one, and the control of the read signal is not more advanced than the conventional one. Furthermore, since the light receiving area does not become small, the sensitivity of the image sensor does not decrease. In addition, photoelectric conversion units 16 that photoelectrically convert light of the same wavelength are arranged symmetrically between the photoelectric conversion blocks 12. Thereby, focus detection is possible in all directions within a plane defined by the first direction and the second direction.

  FIG. 5 is a diagram illustrating another example of the first photoelectric conversion block 12-1 to the fourth photoelectric conversion block 12-4 in the region 20. The fourth photoelectric conversion unit 16-4 is the photoelectric conversion unit 16 provided corresponding to the white (W) filter.

  The white (W) filter transmits light of any wavelength of red (R), green (G), and blue (B). Therefore, in the example of FIG. 5, that the photoelectric conversion unit 16 is symmetric with respect to the boundary is provided corresponding to the red (R), green (G), blue (B), and white (W) filters. It is assumed that the photoelectric conversion unit 16 is in a symmetrical position with respect to the boundary 17 or the boundary 18.

  In this example, a fourth photoelectric conversion unit 16-4 is used instead of a part of the first photoelectric conversion units 16-1. Specifically, G14, G23, G32, G41, G15, G26, G37, G48, G51, G62, G73, G84, G58, G67, G76 and G85, which are the first photoelectric conversion units 16-1, respectively, The fourth photoelectric conversion unit 16-4 is replaced by W14 to W85. With this configuration, the photoelectric conversion unit 16 provided corresponding to the red (R), green (G), blue (B), and white (W) filters is located symmetrically with respect to the boundary 17 or the boundary 18. . Therefore, it is possible to detect the focus in any direction within the plane defined by the first direction and the second direction without dividing the photoelectric conversion unit 16.

  In this example, the photoelectric conversion unit 16 provided corresponding to the white (W) filter is used as the fourth photoelectric conversion unit 16-4. However, in the other examples, the fourth photoelectric conversion unit 16- 4 may be a white (W) neutral density filter. In still another example, the photoelectric conversion unit 16 provided corresponding to a cyan (Cy) filter is provided as the first photoelectric conversion unit 16-1, and the magenta (MgD) is provided as the second photoelectric conversion unit 16-2. ), A photoelectric conversion unit 16 provided corresponding to the filter of (), a photoelectric conversion unit 16 provided corresponding to the yellow (Ye) filter as the third photoelectric conversion unit 16-3, and The photoelectric conversion unit 16 provided corresponding to the green (G) filter may be provided as the fourth photoelectric conversion unit 16-4. As long as the photoelectric conversion unit 16 provided corresponding to the filters of cyan (Cy), magenta (Mg), yellow (Ye), and green (G) is in a symmetric position with respect to the boundary 17 or 18, the photoelectric conversion Focus detection can be performed in any direction within a plane defined by the first direction and the second direction without dividing the unit 16.

  FIG. 6 is a diagram illustrating a range of light spots irradiated to the first and second photoelectric conversion blocks 12 according to the magnitude of the F value. The F value is a value obtained by dividing the focal length of the lens by the effective aperture. Since the focal length of a lens is constant in one lens, the F value increases in proportion to a decrease in effective aperture. The range of the light spot in the first region 60 is smaller than the range of the light spot in the second region 62. The F value corresponding to the light spot in the first region 60 is larger than the F value corresponding to the light spot in the second region 62.

  The focus detection unit 36 of the image sensor 200 may select the photoelectric conversion unit 16 used to detect the focus position based on the F value of the optical system. For example, the CPU 622 provided in the image sensor 200 calculates the range of the light spot from information on the focal length and effective aperture of the lens. Therefore, the focus detection unit 36 can know the photoelectric conversion unit 16 suitable for detecting the focus position.

  For example, when the range of the light spot is the first region 60, the focus detection unit 36 includes G23 which is the first photoelectric conversion unit 16-1 in the first photoelectric conversion block 12-1, and the second photoelectric conversion block. Focus detection may be performed using G26 which is the first photoelectric conversion unit 16-1 in 12-2. However, when the range of the light spot is the first region 60, the focus detection unit 36 does not perform focus detection using the photoelectric conversion unit 16 outside the first region 60. For example, when the range of the light spot is the first region 60, the focus detection unit 36 does not perform focus detection using B42 and B47.

  When the range of the light spot is the second region 62, the focus detection unit 36 includes B42 that is the third photoelectric conversion unit 16-3 in the first photoelectric conversion block 12-1 and the second photoelectric conversion block 12. Focus detection may be performed using B47 which is the third photoelectric conversion unit 16-3 in -2. When the range of the light spot is the second region 62, the focus detection unit 36 may perform focus detection using another photoelectric conversion unit 16 such as G23 and G26. Thereby, the focus detection part 36 can perform an appropriate focus detection according to F value.

  FIG. 7 is a diagram illustrating the position of the light spot irradiated to the first photoelectric conversion block 12-1 according to the position of the exit pupil. Note that the region 64 and the region 66 indicate regions where a light spot hits the photoelectric conversion block 12-1. The two-dimensional center position of the first photoelectric conversion block 12-1 is illustrated as a center point 68.

  Due to the position of the exit pupil in the third direction, a phenomenon may occur in which the light spot is irradiated with a deviation from the center point 68 of the photoelectric conversion block 12. There is a PO value as an index for evaluating this phenomenon. The PO value is equal to the position of the exit pupil in the third direction. When the light spot becomes a region 66 that is substantially symmetrical with respect to the center point 68, the PO value is referred to as just. On the other hand, when the light spot becomes the region 64, the PO value is referred to as relatively small or large compared to the just value.

  The focus detection unit 36 of the image sensor 200 may select the photoelectric conversion unit 16 used to detect the focus position based on the position of the exit pupil of the optical system. When the PO value is just, the light spot hits the photoelectric conversion unit 16 (B22, G23, G32 and R33) corresponding to the region 66. Therefore, the focus detection unit 36 includes one photoelectric conversion unit 16 (any one of B22, G23, G32, and R33) in the photoelectric conversion block 12-1, and the one photoelectric conversion unit in the other photoelectric conversion block 12. The focus detection may be performed using another photoelectric conversion unit 16 that is symmetric with respect to 16.

  On the other hand, when the PO value is not just, the light spot hits the photoelectric conversion unit 16 (G21 and R31 or B24 and G34) corresponding to the region 64. Therefore, the focus detection unit 36 includes one photoelectric conversion unit 16 (any one of G21 and R31 or B24 and G34) in the photoelectric conversion block 12-1, and the one photoelectric conversion unit in the other photoelectric conversion block 12. The focus detection may be performed using another photoelectric conversion unit 16 that is symmetric with respect to 16. Thereby, the focus detection part 36 can perform an appropriate focus detection according to the exit pupil.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.

  The order of execution of each process such as operations, procedures, steps, and stages in the apparatus, system, program, and method shown in the claims, the description, and the drawings is particularly “before” or “prior to”. It should be noted that the output can be realized in any order unless the output of the previous process is used in the subsequent process. Even if the operation flow in the claims, the description, and the drawings is described using “first”, “next”, etc. for convenience, it means that it is essential to carry out in this order. It is not a thing.

DESCRIPTION OF SYMBOLS 10 Imaging chip, 12 Photoelectric conversion block, 14 Micro lens, 16 Photoelectric conversion part, 17 boundary, 18 boundary, 19 Intersection, 20 area | region, 24 bump, 30 Signal processing chip, 32 Signal processing part, 34 AD conversion part, 36 focus Detection unit, 50 memory, 60 first region, 62 second region, 64 region, 66 region, 68 center point, 200 image sensor, 340 shutter unit, 410 optical axis, 400 single-lens reflex camera, 500 lens unit, 550 lens mount , 600 Camera body, 620 Body substrate, 622 CPU, 624 Image processing ASIC, 634 Rear display, 650 Viewfinder, 652 Focus plate, 654 Pentaprism, 656 Viewfinder optical system, 660 Body mount, 670 Mirror box, 672 Mirror

Claims (11)

Among the light transmitted through the microlens, the optical system, and the microlens, a plurality of first pixels that photoelectrically convert light of the first wavelength and output a signal, and a second wavelength of a wavelength different from the first wavelength An imaging device having a first block and a second block each having a plurality of second pixels that photoelectrically convert the light of the first and output a signal ;
A detection unit for detecting a focus position at which an image by the optical system is focused on the image sensor;
A calculation unit that calculates a range for selecting the first pixel or the second pixel used by the detection unit to detect the in-focus position based on the F value of the optical system;
The detection unit selects the first pixel or the second pixel within the range in each of the first block and the second block , and outputs from the selected first pixel or the second pixel. An imaging device that detects the in-focus position based on a signal. The detection unit selects a plurality of the first pixels or a plurality of the second pixels in the range in the first block and the second block, and selects from the selected first pixel or the second pixel. The imaging apparatus according to claim 1, wherein the in-focus position is detected based on an output signal. The calculation unit calculates the range in each of the first block and the second block based on an F value of the optical system,
The detection unit selects the first pixel or the second pixel within the range in each of the first block and the second block , and outputs from the selected first pixel or the second pixel. The imaging apparatus according to claim 1, wherein the in-focus position is detected based on a signal. The detector, the signal output from the first pixel or the second pixel in the first block is in the range, the output from the first pixel or the second pixel is in the range in the second block The imaging device according to any one of claims 1 to 3, wherein the in-focus position is detected based on a signal to be transmitted.   The imaging device according to any one of claims 1 to 4, wherein the calculation unit widens the range when an F value of the optical system decreases.   The imaging device according to any one of claims 1 to 5, wherein the calculation unit narrows the range when an F value of the optical system increases.   The imaging apparatus according to claim 1, wherein the calculation unit calculates a position of the range based on a position of an exit pupil of the optical system. Wherein the first pixel of the first block and the first pixel of the second block, located in a symmetrical position relationship with respect to the boundary between the first block and the second block, said first block the second pixel of the second pixel second block, according to any one of claims 1 to 7 which is in a symmetrical position relationship with respect to the boundary between the first block and the second block Imaging device. The detection unit selects the first pixel or the second pixel that is in a symmetrical positional relationship with respect to a boundary between the first block and the second block, and detects the in-focus position. The imaging device according to claim 8. The imaging device according to claim 1, wherein each of the first block and the second block includes four or more first pixels and four or more second pixels . An imaging chip provided with a plurality of the pixels ;
The imaging device according to claim 1, further comprising: a signal processing chip that is stacked on the imaging chip and processes signals output from the plurality of pixels .

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