JP4192311B2 - Lens storage case and lens storage case storing lens - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lens storage case for storing a small lightweight resin lens and a lens storage case for storing the lens.
[0002]
[Prior art]
For example, as shown in FIG. 4A, a storage case for storing a small and light-weight resin lens for pickup used for recording / reproduction of a laser disk or the like stores the lenses in a line in the radial direction of the lens. There has been used a storage case that is housed in a resin case having a cylindrical portion that can be inserted, and a stopper is inserted at both ends of the cylindrical portion to prevent the lens from falling off.
[0003]
[Problems to be solved by the invention]
The small and lightweight resin lens housed in the lens housing case as described above is charged with static electricity due to friction between the resin lens and the resin case in the cylindrical part of the resin case, and attempts to take the lens out of the case by this electrostatic suction. It became difficult to take out. If you try to remove it forcibly, for example, if you insert a thin stick or compressed air from one side of the cylindrical part, you may damage the optical surface of the lens or other parts by attaching a flaw or flying the lens, and handle it with care. There was a problem in the handling and management of lightweight resin lenses for pickups such as laser disks, which must be very precise.
[0004]
Also, in other resin lenses for optical systems, the same problem of adsorption due to static electricity has occurred to take out the lens from the case housing the lens.
[0005]
Even if an antistatic agent is applied to the lens passage part of the lens housing resin case to prevent static charge due to this friction, it costs a lot to apply and dry, and it absorbs moisture at high humidity, causing stickiness. It ended up worsening the passage of the lens. In addition, the method of mixing an antistatic agent in the resin case has a problem that the material cost is high and the transparency of the case is deteriorated.
[0006]
The present invention has been made to solve the above problems. In other words, the lens storage case and the lens are easy to handle and manage the lens without easily attaching or removing a flaw on the optical surface of the lens or other parts. The object is to provide a lens storage case.
[0007]
[Means for Solving the Problems]
The object of the present invention is achieved by adopting the following configuration.
[0008]
That is, in a resin lens storage case that stores a plurality of resin lenses, a convex shape that is provided on the inner surface of the lens storage case with respect to one lens optical surface side and contacts a surface other than the optical surface of the lens . A lens storage case characterized in that the surface of the lens receiver and the surface that comes into contact with the surface other than the optical surface of the lens on the other lens optical surface side of the inner surface of the lens storage case are mat-like surfaces.
[0009]
Further, the lens storage case has at least one tubular portion for accommodating the lens, said mat Jomen includes a lens, wherein Rukoto formed in each of the inner surface of the tubular portion or tubular section Storage case.
[0010]
Furthermore, before Symbol mat surface, depth 1 to 100 [mu] m, a lens storage case, which is a mat-like surface of the uneven spacing 0.05 to 1 mm.
[0011]
A lens housing case in which a lens is housed in a resin lens housing case that houses a plurality of resin lenses, the lens housing case being provided on a surface of the inner surface of the lens housing case with respect to one lens optical surface side. A lens in a storage case in which a surface of a convex lens receiver in contact with a surface other than the surface and a surface in contact with a surface other than the optical surface of the lens on the other lens optical surface side of the lens storage case are mat-like surfaces A lens storage case that stores a lens, characterized by storing the lens.
[0012]
Further, the lens storage case has at least one tubular portion for accommodating the lens, said mat Jomen includes a lens, wherein Rukoto formed in each of the inner surface of the tubular portion or tubular section Lens storage case that stores
[0013]
Before Symbol mat surface is 1 to 100 [mu] m depth, lens storage case containing the lens which is a mat-like surface of the uneven spacing 0.05 to 1 mm.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the lens storage case of the present invention will be described in detail with reference to FIGS. 1 to 4, but the present invention is not limited to the embodiments described below.
[0015]
1A and 1B are views for explaining the relationship between the shape of a lens and the shape of the inner surface of a lens storage case. FIG. 1A is a cross-sectional view illustrating an example of a lens, and FIG. 1B is a cross-sectional view of a lens storage case that stores the lens. (C) is sectional drawing of the state which accommodated the lens in this lens storage case. 2A and 2B are views for explaining the relationship between another shape of the lens and the shape of the inner surface of the lens storage case. FIG. 2A is a sectional view showing another example of the lens, and FIG. 2B is a lens storage case for storing the lens. (C) is a cross-sectional view of a state in which the lens is housed in the lens housing case. FIGS. 3A and 3B are views for explaining the relationship between still another shape of the lens and the shape of the inner surface of the lens housing case. FIG. 3A is a sectional view showing still another example of the lens, and FIG. Sectional drawing of a storage case, (c) is sectional drawing of the state which accommodated the lens in this lens storage case.
[0016]
FIGS. 4A and 4B are diagrams for explaining how the lens is stored in the lens storage case. FIG. 4A is a diagram illustrating a state in which the lenses are arranged in a line in the radial direction of the lens and stored in the lens storage case, and FIG. (C) is a diagram of a state in which the lens is housed in a lens storage case that can be stored in three rows, and (c) is a diagram of a state in which the lens is stacked in a row and stored in the lens storage case. [Fig. 11] is a sectional view taken along line XX of (c).
[0017]
1 and 4, the lens 3 according to the present embodiment has lens optical surfaces 301 and 302 having convex end surfaces 321 of the front side convex portions 32 and convex end surfaces of the rear side convex portions 33 as shown in the figure. It is located inside 331. On the other hand, the fitting portions 22 on both sides of a lens storage case base (hereinafter also simply referred to as a case base) 2 having the lens receiver 21 have side walls 111 and 112 on both sides, step portions 121 and 122 on both sides, and a ceiling portion. The fitting walls 113 on both sides of a lens storage case cover (hereinafter simply referred to as a case cover) 1 having 123 are fitted and bonded to form a cylindrical portion 10 as shown in the figure.
[0018]
Thus, the lens storage case has at least one cylindrical portion 10 for storing the lens 3, and the cylindrical portion 10 is configured as described above . In other words, the cylindrical portion 10, the case cover 1 is dividable up and down between the case base 2, the upward direction the upper and lower at least one of members that have the groove portion, i.e., a groove-like portion And a case base 2 that can be divided downward.
[0019]
In this lens storage case, the upper case cover 1 and the lower case base 2 are fitted and bonded as described above to form a storage case. This bonding may be performed by an adhesive, but is provided on the bonding surface. In addition, melt bonding by ultrasonic waves on the triangular plane in the longitudinal direction of the joint surface is preferable from the viewpoint of cost and quality.
[0020]
4A, the lens 3 is inserted into and stored in the cylindrical portion 10 sequentially from the end of the cylindrical portion 10 formed by the case base 2 and the case cover 1, and the storage ends. And the stopper 4 are fitted, and the stopper 3 prevents the lens 3 from falling off. A plurality of cylindrical portions 10 may be arranged, and FIG. 4B shows a lens storage case in which the cylindrical portions 10 are arranged in three rows. By doing so, a large number of lenses can be stored in one storage case, and space efficiency can be improved. FIG. 1C shows a state in which the lens 3 is inserted and accommodated in the cylindrical portion 10.
[0021]
In the present invention, in contact with the surface other than the optical surface of the lens 3 when accommodating the lens 3, at least a portion of the surface of the tubular portion 10 is a casing inner surface and forms a rough surface, the present embodiment surface of the lens receiver 21, the surface of both side walls 111 and 112, and the surface of both sides of the stepped portions 121 and 122 rough surface, the rough surface depth 1 to 100 [mu] m, uneven spacing 0.05~1mm it is a mat-like surface having a concave-convex. In addition, this mat-like rough surface is processed by lapping processing, shot peening processing, etching processing, honing processing, sand blast processing, etc. as the rough surface of the resin mold for forming the case cover 1 and the case base 2. Is possible. Accordingly, the production of the resin mold is slightly expensive, but there is no influence on the component cost.
[0022]
The rough surface on the case cover 1 side is the surfaces of the side walls 111 and 112 on both sides and the surfaces of the step portions 121 and 122 on both sides. The side wall and step portion of the storage case and the outer periphery of the lens 3 are in random contact with each other depending on the posture of the case and the like, so the side walls 111 and 112 on both sides that may be in contact with each other, the step portions on both sides 121 and 122 are rough surfaces having a mat-like surface.
[0023]
In this way, by making each of the surfaces described above into a mat-like surface having an uneven surface having such a value, the outer peripheral surface and the convex portion of the front side convex portion 32 of the lens 3 regardless of the posture of the lens storage case. Each surface of the end surface 321, the outer peripheral surface of the flange portion 31, and the convex portion end surface 331 of the rear surface side convex portion 33 always comes into contact with the mat-like surface of the cylindrical portion 10 that is the uneven surface having the above value. However, this contact is a point contact because the mat-like surface of the cylindrical portion 10 is an uneven surface of the above value, and the generation of static electricity can be greatly suppressed. Therefore, generation of adhesive force due to static electricity between the lens 3 and the cylindrical portion 10 is greatly suppressed.
[0024]
Therefore, if the stopper 4 is removed and the lens housing case is made vertical, even a light resin lens for pickup such as a laser disk can be easily dropped by its own weight. Therefore, the lens can be easily managed without damaging the optical surface and other parts of the lens with creases or blowing the lens with compressed air. This effect can be maintained semipermanently by making the aforementioned surface of the lens storage case the rough surface having the above value.
[0025]
The embodiment shown in FIG. 2 is the same as the lens described with reference to FIG. 1 described above with the lens optical surface 302 of the lens 3 positioned on the inner side of the convex end surface 331 of the rear convex portion 33. Reference numeral 301 denotes a protruding end surface 321 of the lens 3. When a case cover similar to the case cover described with reference to FIG. 1 is used, the lens optical surface 301 of the lens 3 comes into contact with the ceiling portion 123, and You will end up with a spear. Therefore, the point that the convex part end surface 321 of the collar part 31 of the lens 3 is suppressed by the step parts 121 on both sides is different from the embodiment of FIG. 1, and others are the same.
[0026]
In the embodiment shown in FIG. 3, the lens is the same as the lens described with reference to FIG. 2, but the lens is thick, so that the flange 31 is thick and the side wall 111 is a fitting wall 113. The point that the receptacle 21 has three thick semi-cylindrical shapes is different from that of the embodiment of FIG. 2, and the others are the same.
[0027]
However, the configurations of the embodiments described with reference to FIGS. 2 and 3 are the same as those of the embodiment described with reference to FIGS.
[0028]
Each of the cylindrical portion or the cylindrical portion of the lens storage case has at least one surface that comes into contact with a surface other than the lens optical surfaces 301 and 302 of the lens 3. For example, FIG. 4C and FIG. 4D, which is a cross-sectional view taken along the line XX of FIG. 4C, is arranged in a row with the lenses 3 overlapped in the thickness direction, and the inner surface having the cylindrical tubular portion 10A forms a cylindrical surface. It is a figure of the state accommodated in the lens storage case which consists of case cover 1A and case base 2A, and has a cylindrical surface which is one surface which contacts the outer diameter of the collar part 31 which is surfaces other than the lens optical surfaces 301 and 302. This is a lens storage case. And this lens storage case can also improve the space efficiency by arranging a plurality of rows of cylindrical portions 10A in FIG. 4C, as in the case of FIG. 4B.
[0029]
Further, as shown in FIG. 1 (b), the cylindrical portion 10 includes the surface of the lens receiver 21, one of the side walls 111 and 112 on both sides, and the step portions 121 and 122 on both sides. There are a total of five contact surfaces on either side. Furthermore, as shown in FIG. 2B, the cylindrical portion 10 has a total of five contact surfaces including the surface of the lens receiver 21, the surfaces of the side walls 111 on both sides, and the surfaces of the step portions 121 on both sides. have. Furthermore, the cylindrical portion 10 has a total of 5 surfaces including the surface of the lens receiver 21, the surfaces of the fitting walls 113 on both sides, and the surfaces of the stepped portions 121 on both sides as shown in FIG. Has two contact surfaces.
[0030]
That is, each of the cylindrical portions 10 and 10A or the cylindrical portions 10 and 10A of the lens storage case has at least one surface that comes into contact with a surface other than the lens optical surfaces 301 and 302. And the said effect is maintained by the mat-like surface by the unevenness | corrugation of the above-mentioned value provided in these surfaces.
[0031]
The lens storage case of the present invention is a lens storage case as described above, but it can also be a lens storage case in which a lens is stored in the lens storage case, and the function and effect thereof are also as described above. .
[0032]
【The invention's effect】
According to the present invention, there is provided a lens storage case that is easy to handle and manage the lens without easily putting a lens etc. on the optical surface of the lens or other parts. It became.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a relationship between the shape of a lens and the shape of an inner surface of a lens storage case.
FIG. 2 is a diagram for explaining a relationship between another shape of a lens and a shape of an inner surface of a lens storage case.
FIG. 3 is a diagram illustrating a relationship between still another shape of the lens and the shape of the inner surface of the lens storage case.
FIG. 4 is a diagram illustrating a lens storage mode in a lens storage case.
[Explanation of symbols]
1,1A Lens storage case cover (case cover)
10, 10A Tubular portion 111, 112 Side wall 113 Fitting wall 121, 122 Step portion 123 Ceiling portion 2, 2A Lens storage case base (case base)
21 Lens receiver 22 Fitting part 3 Lens 301, 302 Lens optical surface 31 ridge part 32 Front side convex part 321, 331 Convex part end face 33 Rear side convex part

Claims (6)

In a resin lens storage case that stores a plurality of resin lenses,
A surface of a convex lens receiver that is provided on a surface of the inner surface of the lens storage case with respect to one lens optical surface side and that contacts a surface other than the optical surface of the lens, and the other lens optical surface side of the inner surface of the lens storage case A lens storage case, wherein a surface that contacts a surface other than the optical surface of the lens is a mat-like surface. Said lens storage case has at least one tubular portion for accommodating the lens, said mat Jomen is claim 1, wherein Rukoto formed in each of the inner surface of the tubular portion or tubular section The lens storage case described in 1. Before Symbol mat surface, depth 1 to 100 [mu] m, the lens storage case according to claim 1 or 2, characterized in that a mat-like surface of the uneven spacing 0.05 to 1 mm. A lens storage case in which a lens is stored in a resin lens storage case that stores a plurality of resin lenses,
A surface of a convex lens receiver that is provided on a surface of the inner surface of the lens storage case with respect to one lens optical surface side and that contacts a surface other than the optical surface of the lens, and the other lens optical surface side of the inner surface of the lens storage case A lens storage case containing a lens, wherein the lens is stored in a storage case having a mat-like surface in contact with a surface other than the optical surface of the lens. Said lens storage case has at least one tubular portion for accommodating the lens, said mat Jomen is claim 4, characterized in Rukoto formed in each of the inner surface of the tubular portion or tubular section A lens storage case containing the lens described in 1. Before Symbol mat surface, depth 1 to 100 [mu] m, a lens storage case accommodating the lens according to claim 4 or 5, characterized in that a mat-like surface of the uneven spacing 0.05 to 1 mm.

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