JPS6331769B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a slide original drawing determination device, more specifically, it is a device for determining whether or not an audience can clearly decipher the content of an original drawing or manuscript such as a slide film or movie film as an image. The present invention relates to a determiner for easy determination.

When creating slides, movie films, etc.
How to judge in advance the size of the figures, characters, etc. that are the contents of the original drawings and manuscripts that are the source of the images so that they can be clearly identified or read when converted into video. , usually requiring extensive experience and knowledge. For this reason, it is inconvenient for inexperienced or inexperienced people to have to go through a lot of trial and error in order to prepare suitable originals for slides and projection films.

In recent years, with advances in equipment such as cameras, film cameras, and projectors, opportunities for so-called amateurs to project images on their own have increased, and opportunities for researchers to use them in their research presentations have also increased. There has been a demand for a determining device that allows even inexperienced or inexperienced users to easily create appropriate slides and films.

In order to meet such demands, the present inventors
In order to develop a device that would allow even people with little experience and knowledge to easily create appropriate slides and films, they conducted various research, and first created a rectangular frame on one end of a support and a perforated eyepiece on the other end. are arranged parallel to each other, and the actual vertical and horizontal dimensions of the image are multiplied by the length of the frame and the eyepiece divided by the distance between the actual image plane and the viewing point. We proposed a judger that uses the vertical and horizontal dimensions of the frame, respectively.

However, since this judger needs to be created for each predetermined image plane,
When using the same slide or film for two or more different image planes, two or more judgment devices must be prepared separately to determine whether it is appropriate for each different image plane. The drawback was that I had to do it.

Therefore, as a result of further research, the present inventor found that
It has been discovered that the above-mentioned drawbacks can be overcome by providing a plurality of contours with a size ratio corresponding to a predetermined slide projection plane as the frame, and the present invention has been completed.

That is, the present invention provides: (a) an elongated support; (b) a rectangular transparent plate attached to one end of the elongate support substantially perpendicularly to the elongate support; and (c) at the other end of the elongate support. comprising a perforated eyepiece plate having a peephole attached substantially perpendicular to the elongated support and substantially parallel to the rectangular transparent plate, and in the rectangular transparent plate;
The vertical dimension a of the slide projection surface is multiplied by the distance c between the rectangular transparent plate and the perforated eyepiece, and divided by the distance b between the slide projection surface and the desired viewing point, ac/
b is the vertical dimension, and the horizontal dimension of the slide projection surface
A rectangular profile whose horizontal dimension is a′.c/b, which is a value obtained by multiplying a′ by the distance c between the rectangular transparent plate and the perforated eyepiece, and dividing by the distance b between the slide projection plane and the desired viewing point. The present invention provides a slide original image determining device characterized in that a plurality of the following are provided corresponding to different slide projection planes.

Next, the present invention will be explained in more detail with reference to the accompanying drawings.

FIG. 1 shows the relative positional relationship between the image planes 1 and 1' and the viewing point 2. The dimensions of the image plane 1 are vertical a and horizontal a', and the image plane 1' is, for example, 2/3 vertical. a,
Width 1/2. a', and the horizontal distance between the image plane and the viewing point is b. This viewing point is usually selected from a central audience position, but is not limited to this.
For example, it may be the position of the audience occupying the rearmost part.

FIG. 2a shows an example of the slide original image determination device of the present invention, and FIG. 2b shows a front view of the rectangular transparent plate 3. This judge has a rectangular transparent plate 3 at one end on a support 4 and a peephole 6 at the other end.
It consists of a perforated eyepiece plate 5 which is arranged parallel to the support and at a nearly right angle to the support, but the dimensions of the outline drawn or carved on the rectangular transparent plate are the horizontal distance between the rectangular transparent plate and the eyepiece plate, Alternatively, to further increase accuracy, when the outer horizontal distance from the observer's pupil is c, the contour corresponding to image 1 in Fig. 1 is vertically a・
c/b, horizontal a', c/b, and the contour corresponding to image 1' is, for example, vertical 2a, c/3b, horizontal a', c/b.
It is 2b. As a result, the viewer's vision of the two images during projection corresponds to the judge's vision of the original image, making it possible to determine whether the image is legible.

In the case shown in Fig. 2a, the grip bar 7 is attached to the support 4 for convenience of handling, and the perforated eyepiece plate is oriented so that the direct line of sight from the peephole reaches the center point of the rectangular transparent plate. It is set up. The eyepiece plate may be made by leaving a peephole in a transparent plate and filling it with opaque paint, or by punching a hole in an opaque plate to make a peephole, or even a transparent plate. It may also be a stack of opaque plates with holes drilled in them.

The above-mentioned support 4 is composed of two supports 4a and 4b as shown in FIG. 3, for example, and a rectangular transparent plate and an eyepiece are attached to separate supports,
It is advantageous to construct the rectangular transparent plate and the eyepiece so that they can expand and contract while maintaining their parallel state, since the dimensional ratio can be changed as appropriate. Incidentally, as shown in FIG. 3, a scale and a reference point may be marked in order to facilitate adjustment of the distance between the rectangular transparent plate and the eyepiece plate.

Although there are no particular restrictions on the shape of the support, a cylindrical shape is preferable in terms of ease of handling when the determination device is held in the hand.

FIG. 4 shows a structure in which the determination device of the present invention can be folded to make it convenient to carry. '', and can be folded up as shown in the figure when not in use.

As a method for adapting the determiner of the present invention to the above-mentioned dimensional conditions, a plurality of outlines of different sizes are provided on the above-mentioned rectangular transparent plate by engraving or the like.
In addition to the method of selecting and using a suitable contour from among these methods, the method of adjusting the length of the support, and the method of combining these two methods, there are methods. Which of these methods is selected is determined by the desired size of the overall judging device based on the size of the object to be photographed, such as an original drawing or manuscript, the size of the projection venue, or portability.

The number of contours to be carved on the rectangular transparent plate is not limited to the two mentioned above, and more contours can be drawn if necessary, but in this case, as a method for identifying mutual contours without error, As shown in Figure 5, there is a method of adding symbols to the outline, a method of changing the thickness and type of the outline line, and a method of applying transparent coloring such as red or green to the area between the lines as shown in Figure 6. There are various methods, but it goes without saying that these many contour lines and colored parts should be selected and used in a way that will not impair visual field or judgment ability.

In addition, if there is a special need, the shape of the rectangular transparent plate, the contour body, and the contour can be made into any shape such as circular or oval.

As the material of the transparent plate, for example, glass, acrylic plate, etc. are advantageously used.
As shown in the figure, a frame consisting only of overlapping contour bodies can also be used. In this case, supports 9, 9', etc. for supporting the internal contour bodies P, Q, etc. are required. Also, by arranging the contour bodies as shown in FIG. 8, the number of supports can be reduced or eliminated altogether. In addition to this, the arrangement of the plurality of contour bodies can be considered in various geometric combinations, but it goes without saying that these can also be drawn on a rectangular plate made of transparent material.

The procedure for determining an original drawing or the like using the determining device of the present invention will be described with reference to the case where the rectangular transparent plate shown in FIG. 5 is attached to the determining device in place of the same transparent plate 3 shown in FIG. 2b. For example, when a certain original drawing is projected as a slide, it is necessary to use the judgment device of the present invention to determine in advance whether or not the contents of the drawing, such as characters, can be read from the audience seats located at an average distance. To do this, place the judge in a direction where the perpendicular line drawn from the center of the original image and the optical axis of the main judge almost coincide with each other, and look through the peephole 6 to compare the contour determined in advance from the projection conditions, for example, the contour N, and the original image itself. Match the outer frame. At the same time, if the content of the diagram seen through the peephole can be read or determined, the projected image is also legible, and if it is unreadable, it is determined that the projected image is also unreadable.

At this time, if you want to know to what extent the content can be read when you project the same film under different projection conditions in a small venue, such as at home, you can change the projection conditions to the outline O shown in Figure 5. If it is found that the figure corresponds to , then the judge should be advanced to the position where the outer frame of the original drawing coincides with the outline O while looking through the peephole 6, and it should be determined whether the drawing can be read or discriminated at that position. Furthermore, in order to know the legibility of projection in a large venue, the projection conditions must be
If it corresponds to this contour, then the determination can be made by retreating until the outer frame of the original image matches this contour.

If the projection condition corresponds to contour M and the contents are unreadable even if you try to match the outer frame of the original image with the contour, use this judger to read the contents while looking through the peephole. The object is brought as close as possible, and at that position, the portion of the original drawing that appears surrounded by the outline M is recorded or memorized. If you take a photo for a slide with only this area in full field of view, the resulting slide will be able to be seen from the audience seats at an average distance when it is projected, with visual acuity equal to or better than that of the person using the tester. Gives a human readable image. Therefore,
In this case, two or more slides will be required to project the entire original drawing.

As a reverse example, the contour N corresponding to the projection condition
Even if you place the device in a position to match the outer frame of the original drawing and look at it, if the contents of the original drawing seem too easy to decipher, move the judgment device back to an appropriate position and, for example, change the outline L. If reasonable legibility could be obtained by matching the outer frame of the original image with the outer frame of the original image, then the slide photo would be taken of an area that appears to be surrounded by the outline N, which has a wider area than the original image. Appropriate explanatory text, other figures, etc. are added to the newly generated extra area as a difference between L.

In some cases, the size of the contour determined from the projection conditions may be intermediate in size between one contour and the next, in which case the outer frame of the original image must be divided. It is also possible to easily determine the size of the drawn outline by visual measurement.

In either case, this determiner, which has a rectangular transparent plate containing multiple contours, requires more effort to replace the frame or adjust it to the specified size, compared to a determiner that has only one contour. You can simply select and use an outline of the appropriate size from among the outlines visible in front of you, and if necessary, you can also obtain knowledge about parts other than the outline being used, making it even more functional. It is highly practical and highly practical.

This judger is mainly used to judge slide originals, but the same method can be used to judge other video originals such as movies and videos, or the identification of individual objects in landscapes. Needless to say, it can also be conveniently used for judgments.

In reality, the legibility of the original image seen through the peephole 6 of the perforation eyepiece plate 5 is determined, and the original image is captured on film using a camera, developed and fixed, and then projected as a slide, etc., and then set at an average distance. Strictly speaking, there should be a difference in the legibility of an image seen from a certain audience seat, but recent advances in technology have made it easier to select the appropriate camera, film, and projector, to use it in a defined manner, If these operations are performed using a processing method, it is now possible to easily obtain an image in which there is practically no discernible difference between the two.

In this way, if the determiner of the present invention is used,
Even an unskilled person can easily determine in advance whether the slide film, motion picture film, etc. that he or she is about to produce will be suitable for projection at a given location. This is very convenient in practice since it is possible to prepare an appropriate film or the like according to the determination result.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the principle of the present invention, Fig. 2a is a side view of one embodiment of the invention, Fig. 2b is a front view of the rectangular transparent plate portion, and Fig. 3 is a diagram of another embodiment. A plan view, FIG. 4 is a side view of another embodiment, FIG.
6, 7, and 8 are front views of different embodiments of the rectangular transparent plate of the present invention. In the figure, numeral 3 is a rectangular transparent plate, 4 is a support, 5 is a perforated eyepiece plate, 6 is a peephole, and 7 is a grip bar.

Claims (1)

[Scope of Claims] 1) A long support; b) A rectangular transparent plate attached to one end of the long support substantially perpendicularly to the long support; and c) At the other end of the long support. , consisting of a perforated eyepiece plate having a peephole attached substantially perpendicular to the elongated support and substantially parallel to the rectangular transparent plate; The vertical dimension is ac/b, which is the value obtained by multiplying the distance c between the rectangular transparent plate and the perforated eyepiece plate and dividing by the distance b between the slide projection surface and the desired viewing point.
A value obtained by multiplying the horizontal dimension a′ of the slide projection surface by the distance c between the rectangular transparent plate and the perforated eyepiece, and dividing it by the distance b between the slide projection surface and the desired viewing point: a′.c/
A slide original drawing determination device characterized in that a plurality of rectangular contours having a horizontal dimension b are provided corresponding to different slide projection planes. 2. The determining device according to claim 1, wherein the elongated support is a single rod-like body or a long and thin plate-like body. 3. The determining device according to claim 1, in which the rectangular transparent plate and the perforated eyepiece plate are arranged on separate supports, and are expandable and contractible while maintaining a parallel state between the two. 4. The determining device according to claim 1 or 3, wherein the support is cylindrical. 5. The determining device according to claim 1, wherein each contour provided on the rectangular transparent plate is color-coded.