JP2010156788A - Jig for lens - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a jig for a lens capable of readily and surely positioning a lens having a straight side surface, without damaging the surface of the lens. <P>SOLUTION: The jig for the lens 100 can perform not only correction by translation movement in a two-dimensional plane surface by a pair of first guide portions 101a and 101b and a pair of second guide portions 102a and 102b, but also correction of rotational deviations, by imparting a rotational moment around an optical axis AZ, from lens side surfaces 11a and 11b to a cut lens 10 by first to fourth edge portions EG1 to EG4, comprising first to sixth tapered surfaces, so that the cut lens 10 can be guided accurately to a prescribed position in the jig for the lens 100. In this case, automatic storage operation is easy by using a machine mechanism, such as, robot for conveyance. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lens jig for holding a lens having a straight side surface for transportation and storage.

As a lens barrel that accommodates a double D-cut lens that is a lens having a pair of parallel straight side surfaces, a concave portion is provided in the corner of the lens barrel, and the straight side surface of the lens is inserted against the straight portion of the lens barrel. Thus, there is known one that does not damage the corners of the lens (see Patent Document 1). In addition, a lens holding structure having a pressing portion that engages with a side surface of a lens having a straight side surface is also known (see Patent Document 2).
JP 2006-227404 A Japanese Patent Laid-Open No. 7-5353

  However, as in the above-mentioned Patent Document 1, when a lens is inserted, inserting the lens against the straight part of the lens barrel requires, for example, that the lens be inserted obliquely with respect to the lens barrel. For this reason, it may be difficult to mechanically automate the insertion operation. Further, as in Patent Document 2, in order for the presser portion to be engaged with the side surface of the lens, it is assumed that there is no displacement between the presser portion and the lens. However, misalignment during lens mounting often occurs unavoidably. Even if such misregistration occurs, the optical surface, corners, etc. of the lens can be inserted and mounted. May be damaged.

  Therefore, an object of the present invention is to provide a lens jig that can easily and reliably position a lens having a straight side surface without damaging the lens surface.

  In order to solve the above problems, a lens jig according to the present invention has (a) first and second side planes corresponding to a pair of parallel lens side surfaces of a cut lens to be held, A holding portion for holding the cut lens between the first and second side planes; and (b) disposed on the outer side and the upper side of the holding portion, and imparting a rotational moment about the optical axis of the cut lens to the lens side surface. And a guide portion having a rotation imparting portion for guiding the cut lens between the first and second side planes. Here, upward refers to the direction from the back side that supports the cut lens in the holding portion toward the entrance side where the cut lens is inserted. That is, when positioning is performed by inserting a cut lens into a lens jig according to its own weight, the direction is opposite to the direction of gravity. In addition, let the upper side and the opposite direction side (gravity direction) be a downward direction.

  In the above-mentioned lens jig, the rotation imparting portion gives a rotational moment to the lens side surface, so that when the cut lens is inserted into the lens jig, the positional deviation including rotation around the optical axis of the cut lens is corrected. The cut lens can be guided between the first and second side planes which are predetermined positions in the holding portion. Thereby, the positioning of the cut lens can be performed easily and reliably without damaging the lens surface.

  According to a specific aspect of the present invention, (a) the rotation imparting portion has convex first and second edge portions formed close to the outer sides of the first and second side planes, respectively. (B1) The first edge portion is directed toward the center position and the direction component going upward with reference to a predetermined starting point provided between the center position of the corresponding first side plane and one end portion. Extending in an edge direction having a direction component and an outward direction component; and (b2) the second edge portion is opposite to one end portion of the first side plane from the center position of the corresponding second side plane. With reference to a predetermined starting point provided up to the other end located on the side, an edge direction having an upward direction component, a direction component toward the center position, and an outward direction component It is characterized by extending. In this case, the convex first and second edge portions can apply a rotational moment in an appropriate direction to the cut lens in which the positional deviation due to the rotation has occurred.

  According to another specific aspect of the present invention, the rotation imparting portion is disposed adjacent to the outside of the first side plane on the opposite side of the first edge portion across the center position of the first side plane. A third edge portion that imparts a rotational moment opposite to the edge portion to the lens side surface, and a second edge on the opposite side of the second edge portion across the center position of the second side surface And a fourth edge portion that imparts a rotational moment opposite to the two edge portions to the lens side surface. In this case, an appropriate rotational moment can be applied to the cut lens that has caused the rotational deviation in accordance with the direction of the rotational deviation. Specifically, for example, a counterclockwise rotational moment can be applied by the first and second edge portions, and a clockwise rotational moment can be applied by the third and fourth edge portions, for example.

  According to another specific aspect of the present invention, (a) the first edge portion is formed by the intersection of the first inclined surface and the second inclined surface, and (b) the first inclined surface is the first And by rotating a surface perpendicular to the axial direction of the first reference axis parallel to the direction in which the second side plane extends around the second reference axis extending in the normal direction of the first and second side planes to a predetermined angle And the second inclined surface is inclined at a predetermined angle by rotating a surface perpendicular to the axial direction of the second reference axis around the first reference axis, and (c) a second edge The portion is formed by the intersection of the third inclined surface and the fourth inclined surface, and (d) the third inclined surface rotates about the second reference axis about a plane perpendicular to the axial direction of the first reference axis. And the fourth inclined surface rotates the surface perpendicular to the axial direction of the second reference axis around the first reference axis. Characterized in being arranged inclined at a predetermined angle. In this case, the first and second edge portions having a desired direction can be formed in order to give an appropriate rotational moment by setting the angle of each inclined surface.

  According to another specific aspect of the present invention, the inclination angles of the first to fourth inclined surfaces are all 20 ° or less. In this case, in the positioning of the cut lens, the possibility of damaging the lens surface by the rotation imparting portion can be reduced and smooth alignment can be achieved.

  According to another specific aspect of the present invention, the rotation imparting portion is a straight end point of the cut lens from a center position passing through the optical axis of the cut lens with the center axis extending in the vertical direction passing through the center position of the holding portion. It exists in the cylindrical area | region which makes the length to to a radius. In this case, a rotational moment can be applied to the cut lens with a constant force regardless of the magnitude of the rotational deviation angle.

  According to another specific aspect of the present invention, the guide portion has a mortar-shaped curved surface extending upward along a curved side surface connecting a pair of lens side surfaces of the cut lens held by the holding portion. To do. In this case, the positional deviation in the direction of the curved side surface of the cut lens can be corrected by the mortar-shaped curved surface of the holding portion.

  According to another specific aspect of the present invention, the rotation imparting portion is disposed rotationally symmetrically about a central axis extending in the vertical direction through the center position of the holding portion. In this case, it is possible to give a rotational moment about the cut lens at an appropriate position.

  According to another specific aspect of the present invention, the holding portion has a support surface that supports the cut lens on the lower side of the lens side surface. In this case, the cut lens can be supported and fixed at an appropriate position in the vertical direction by the support surface.

  FIG. 1A is a perspective view illustrating a lens jig and a lens housed therein according to the present embodiment. FIG. 1B is a diagram showing a state where the lens is housed in the lens jig.

  The cut lens 10 to be stored and protected in the present embodiment includes a lens body CB having a condensing function and the like, and a flange portion FB provided around the flange portion CB as shown in the figure. And a lens having an I-cut shape (a so-called double D-cut lens, hereinafter referred to as an I-cut lens). The cut lens 10 is characterized by having lens side surfaces 11a and 11b that are a pair of straight surfaces that are symmetrical with respect to the center position of the cut lens 10 and extend parallel to each other. The cut lens 10 is placed in a suitable position by injection molding in which plastic as a raw material is injected into a mold, by pressure molding in which glass is melted and pressed directly, or after the pressure molding or the like as necessary. By removing, it is formed in a shape having the lens side surfaces 11a and 11b as described above. More specifically, the cut lens 10 has first and second optical surfaces S1 and S2 on the lens body CB as outer shapes, lens side surfaces 11a and 11b, corner portions CR on the flange portion FB, It has curved side surfaces 12a and 12b having cylindrical curves. Further, the lower surface and the upper surface of the cut lens 10 respectively have a flange portion lower surface F1 and a flange portion upper surface F2 formed by the flange portion FB around the first and second optical surfaces S1 and S2 of the lens body CB. . Further, as shown in the drawing, since the cut lens 10 is an I-cut lens, an axis AX extending perpendicular to the lens side surfaces 11a and 11b and an axis AY extending parallel to the lens side surfaces 11a and 11b are used for alignment. It will be the reference axis. The axis AX and the axis AY are orthogonal to each other, and the intersection AO corresponds to the center position CO of the lens body CB. That is, the axes AX and AY intersect each other perpendicularly to the optical axis AZ of the cut lens 10 at the intersection AO.

  The lens jig 100 is a jig used for storage of the cut lens 10, and when the cut lens 10 is mounted, the cut lens 10 is moved and stored, as well as various optical devices. As a result, it is possible to function as a lens barrel or the like. The lens jig 100 includes a holding part 110 that holds the cut lens 10, a guide part 101 that guides the cut lens 10 to the holding part 110, and a frame body 120 that serves as a base part that carries these. The holding part 110 and the guide part 101 are formed by providing a recess on the surface 120 a of the frame body 120. The lens jig 100 can be used as a lens barrel by forming an opening in the frame 120 corresponding to the lens body CB.

  The holding unit 110 has surfaces corresponding to the lens side surfaces 11a and 11b of the cut lens 10, the flange lower surface F1, and the like, so that the cut lens 10 is accurately aligned with a predetermined position in the lens jig 100. Store in. Specifically, the holding unit 110 includes a pair of side planes 111a and 111b corresponding to the pair of lens side surfaces 11a and 11b, curved surfaces 112a and 112b corresponding to the curved side surfaces 12a and 12b, side planes 111a and 111b, and the like. And a support surface (reference surface) SS that supports the entire cut lens 10 from the first optical surface S1 and the flange lower surface F1 side. As a result, the holding unit 110 includes the side surfaces 111a and 111b and the curved surfaces 112a and 112b on the side surfaces of the cut lens 10 including the lens side surfaces 11a and 11b and the curved side surfaces 12a and 12b that connect the lens side surfaces 11a and 11b via the corner CR. And the lower surface side of the cut lens 10 is supported from below by the support surface SS, so that the cut lens 10 is stably aligned and fixed in the holding unit 110. Here, on the support surface SS, the first reference axis BX parallel to the extending direction of the both side planes 111a and 111b and the second reference axis BY perpendicular to the both side planes 111a and 111b are the holding unit 110. It is a reference for alignment of the cut lens 10 by intersecting perpendicularly at the intersection BO, which is the center position of the cut lens 10. That is, in the holding unit 110 as described above, the side surfaces 11a and 11b of the cut lens 10 to be housed therein and the side planes 111a and 111b of the holding unit 110 are aligned and aligned. At this time, both the reference axes BX and BY and the intersection point BO coincide with the both axes AX and AY and the intersection point AO of the cut lens 10, respectively, so that the cut lens 10 is aligned and installed at an accurate position. As shown in the figure, the directions in which the reference axis BX and the reference axis BY of the lens jig 100 extend are the x direction and the y direction, respectively. Further, the z direction corresponding to the direction of gravity is defined as the vertical direction. That is, the + z side is the upper side and the -z side is the lower side.

  The guide portion 101 is disposed adjacent to the holding portion 110 on the upper side of the holding portion 110, that is, on the + z direction side, on the outer side of the holding portion 110, that is, on the outer edge side of the surface 120a provided on the frame body 120. ing. The guide portion 101 includes a pair of first guide portions 101a and 101b provided on the upper side and the outside of the side planes 111a and 111b of the holding portion 110 corresponding to the pair of lens side surfaces 11a and 11b of the cut lens 10, respectively. Corresponding to the curved side surfaces 12a and 12b of the lens 10, second guide portions 102a and 102b formed above the curved surfaces 112a and 112b are provided. Here, the pair of first guide portions 101a and 101b have first to sixth tapered surfaces T1 to T6 which are first to sixth inclined surfaces, respectively. First to fourth edge portions EG1 to EG4 are formed as intersecting portions of these tapered surfaces T1 to T6. These edge portions EG1 to EG4 serve as a rotation imparting portion that guides the cut lens 10 to the holding portion 110 by giving a rotational moment about the optical axis AZ to the cut lens 10 via the pair of lens side surfaces 11a and 11b. Functions (details will be described later). The second guide portions 102a and 102b are configured as mortar-shaped curved surfaces that widen upward so as to guide the cut lens 10 to the holding unit 110 while sliding.

  The cut lens 10 is moved on the guide portion 101 of the lens jig 100, that is, near the support surface SS on the lens jig 100 by the operation of a mechanical mechanism (not shown) such as a transfer robot. Placed. When the cut lens 10 descends according to gravity or the like, the cut lens 10 is rotated or slid by being guided by the guide unit 101, and is aligned or stored or inserted in the holding unit 110 as shown in FIG. It becomes. As a method for inserting the cut lens 10, the cut lens 10 can be stored more efficiently by being automated by a mechanical mechanism such as a transport robot.

  2A is a plan view schematically showing the state of the cut lens 10 and the main part of the guide portion 101 in a state where the cut lens 10 is inserted in the lens jig 100. FIG. B) and 2 (C) are cross-sectional views of the cut lens 10 and its periphery. In addition, in the above figure, about the lens main body CB of the cut lens 10 shown to FIG. 1 (A) and 1 (B), illustration is abbreviate | omitted.

  First, in the guide portion 101, one of the first guide portions 101a is rotated by an angle α by rotating a surface (yz plane) perpendicular to the axial direction of the first reference axis BX around the second reference axis BY. The first taper surface T1 that is inclined and the surface (xz plane) perpendicular to the axial direction of the second reference axis BY are rotated around the first reference axis BX so as to be inclined by an angle β. And a second tapered surface T2. A first edge portion EG1 that is a rotation imparting portion is formed in a convex shape at the intersection of the first tapered surface T1 and the second tapered surface T2. Similarly, the 1st guide part 101b has the 3rd taper surface T3 and the 4th taper surface T4, and the 2nd edge part EG2 is formed in convex shape by both taper surfaces T3 and T4. The first and second edge portions EG1 and EG2 are rotationally symmetrical about a central axis passing through the intersection BO, which is the center position of the holding portion 110, and cooperate to rotate the cut lens 10 clockwise on the paper surface. Rotational moment for rotating in the direction can be equally applied to the lens side surfaces 11a and 11b. The first and second edge portions EG1 and EG2 are edges formed as intersecting portions of the respective tapered surfaces T1 to T4, but are slightly curved.

  The other first guide portion 101a is arranged on the opposite side of the first taper surface T1 across the second reference axis BY, in addition to the common taper surface T2, and the yz plane is defined as the first taper surface T1. It has the 5th taper surface T5 rotated by the angle (alpha) in the reverse direction. A third edge portion EG3, which is a rotation imparting portion, is formed in a convex shape by the intersection of the fifth tapered surface T5 and the second tapered surface T2. Similarly, the 1st guide part 101b has the 6th taper surface T6 located in the opposite side to the 3rd taper surface T3 besides the common taper surface T4. A fourth edge portion EG4, which is a rotation imparting portion, is formed in a convex shape by the intersection of the sixth tapered surface T6 and the fourth tapered surface T4. The third and fourth edge portions EG3 and EG4 are disposed rotationally symmetrically about a central axis passing through the intersection BO, which is the center position of the holding portion 110, and cooperate with the cut lens 10 to counterclockwise on the paper surface. A rotational moment for rotating in the rotating direction can be applied to the lens side surfaces 11a and 11b. Note that the third and fourth edge portions EG3 and EG4 are also slightly curved like the first and second edge portions EG1 and EG2.

  The cut lens 10 guided between the side planes 111a and 111b of the holding unit 110 by the guide unit 101 brings the positioning units AP formed at the four corners on the flange unit lower surface F1 of the flange unit FB into contact with the reference plane SS. Since the flange portion FB is supported on the state, that is, the reference surface SS, alignment in the vertical direction is achieved.

  In the lens jig 100 described above, the second taper surface T2 and the fourth taper surface T4, and the first to fourth edge portions EG1 to EG4, which are both end portions, are all in the center of the holding portion 110. The optical axis AZ passing through the intersection point BO, which is the position, is present in the cylindrical region having the radius R from the center position AO of the cut lens 10 (ie, the intersection point BO) to the straight end point SD of the cut lens 10. That is, in FIG. 2A, the tapered surfaces T2 and T4 and the first to fourth edge portions EG1 to EG4 are contained in a circle CI having a radius R from the intersection AO (BO). Further, the values of the angles α and β are constant values of 20 ° or less. As a result, the rotation of the cut lens 10 is prevented from being hindered by the tapered surfaces T1 to T6 and the edge portions EG1 to EG4, and the lens jig 100 is smoothly accommodated.

  When the cut lens 10 is stored in the illustrated lens jig 100, it is conceivable that the storage operation is automatically performed using a mechanical mechanism (not shown) such as a transport robot as described above. . However, even in such an automated case, it is difficult to accurately place or place the cut lens 10 at a predetermined position above the holding portion 110 of the lens jig 100 during storage. In many cases, it is placed in a position shifted in a two-dimensional plane parallel to the xy plane shown in 2 (A). Such a positional shift includes a shift shift related to translation in the two-dimensional plane and a rotational shift related to rotation. In order to correct the positional deviation when the cut lens 10 is conveyed and placed, it is necessary to correct both the shift deviation and the rotational deviation. That is, the cut lens 10 not only corrects the shift deviation by matching the intersection AO and the intersection BO by translational movement in the x direction and y direction, but also the direction in which both axes AX and AY extend and both references by rotational movement. It is necessary to correct the rotational deviation by matching the extending direction of the axes BX and BY. The lens jig 100 according to the present embodiment can not only correct the arrangement of moving the cut lens 10 in the x direction and the y direction, but can also correct the posture of rotating the cut lens 10. It can be accurately stored in a predetermined position in the jig 100.

  First, the lens jig 100 includes the second guide portions 102a and 102b, and the first guide portions 101a and 101b have the tapered surfaces T2 and T4, as described above. The cut lens 10 can be translated in order to correct the shift deviation generated in the x and y directions. More specifically, the lens jig 100 has second guide portions 102 a and 102 b that extend along the curved side surfaces 12 a and 12 b of the cut lens 10. Thereby, the lens jig 100 can cope with the shift deviation of the cut lens 10 in the x direction. That is, when the cut lens 10 is placed, even if the position of the intersection AO is shifted to the negative side or the positive side in the x direction with respect to the position of the intersection BO of the lens jig 100, the cut lens 10 As it moves downward (in the −z direction), the position is corrected in the x direction by the pair of second guide portions 102 a and 102 b formed in a mortar shape and guided to a predetermined position in the holding unit 110. Further, the lens jig 100 has tapered surfaces T2 and T4 corresponding to the lens side surfaces 11a and 11b of the cut lens 10 and extending along these. Accordingly, even if the position of the intersection AO of the cut lens 10 is shifted to the negative side or the positive side in the y direction with respect to the position of the intersection BO of the lens jig 100, the cut lens 10 is moved downward (−z The position is corrected in the y direction by the tapered surfaces T2 and T4 which are inclined surfaces.

  Further, the lens jig 100 according to the present embodiment is cut by the first to fourth edge portions EG1 to EG4 formed by the first to sixth tapered surfaces in addition to the correction of the shift deviation due to the translational movement described above. By applying a rotational moment about the optical axis AZ from the lens side surfaces 11 a and 11 b to the lens 10, the rotational deviation can be corrected and guided to the holding unit 110.

  Hereinafter, the correction of the rotational deviation will be described in detail with reference to FIG. FIG. 3B is a diagram for comparison. Further, in addition to the rotational deviation, there is a possibility that shift deviations in the x direction and the y direction may occur at the same time. However, as described above, the second guide portions 102a and 102b and the tapered surface T2, The description is omitted because it can be dealt with by T4, and here, correction of the rotational deviation will be described on the assumption that only rotational deviation has occurred as shown in FIG.

  In the example of FIG. 3A, the cut lens 10 is shown in a state of being rotationally shifted counterclockwise by an angle θ from the position where the cut lens 10 is to be housed. That is, in FIG. 3A, the axes AX and AY of the cut lens 10 are shifted from the reference axes BX and BY of the holding unit 110 by an angle θ. It is assumed that the intersection point AO and the intersection point BO coincide.

  As shown in FIG. 3A, when the cut lens 10 is rotationally displaced, the lens side surfaces 11a and 11b of the cut lens 10 guided to the guide portion 101 are first and second edge portions EG1 and EG2, respectively. It will be in the state which touched. Here, the first edge portion EG1 is formed by the first and second tapered surfaces T1 and T2 as described above, and is provided between the center position MA of the corresponding first side plane 111a and one end portion EA. It has been. The first edge portion EG1 has a point component on the boundary with the first side plane 111a as a starting point P1, a direction component (+ z direction) upward from the end EA, and a direction component (+ x direction) toward the center position MA. ) And an outward direction component (−y direction). The second edge portion EG2 is provided between the center position MA of the corresponding second side plane 111b and the other end portion EB located on the opposite side of the intersection BO with the one end portion EA of the first side plane 11a. It has been. The second edge portion EG2 has, as a starting point P2, a point on the boundary portion with the second side plane 111b, a direction component (+ z direction) upward from the end portion EB, and a direction component (−x) toward the center position MA side. Direction) and an edge direction having an outward direction component (+ y direction). Therefore, the first and second edge portions EG1 and EG2 are in the directions indicated by the arrows A1 and B1 with respect to the lens side surfaces 11a and 11b according to the weight of the cut lens 10 and the biasing force in the −z direction by the mechanical mechanism. Forces or rotational moments can be generated. When the cut lens 10 is mounted, when the value of the angle θ is large, the lens side surfaces 11a and 11b are in contact with the upper ends of the edge portions EG1 and EG2. When the value of the angle θ is small, the lens side surface 11a and 11b will be in the state which contact | connected the lower end side of edge part EG1 and EG2.

  As described above, the first and second edge portions EG1 and EG2 apply a rotational moment around the optical axis AZ of the cut lens 10 in the clockwise direction to the lens side surfaces 11a and 11b to hold the cut lens 10 in the holding unit 110. Lead between the first and second side planes 111a, 111b. In the example of FIG. 3A, the cut lens 10 is described as being in a state of being rotationally shifted counterclockwise on the paper surface. However, the cut lens 10 is rotated clockwise on the paper surface. When there is a rotational deviation, the third and fourth edge portions located on the opposite side of the first and second edge portions EG1, EG2 across the central position MA of the first and second side planes 111a, 111b. The EG3 and EG4 impart the same action in the opposite rotation direction, so that a counterclockwise rotational moment is applied to the lens side surfaces 11a and 11b, and the cut lens 10 is held on the first and second side planes 111a of the holding unit 110. , 111b.

  As described above, the lens jig 100 not only corrects shift deviation by translating the cut lens 10 in a two-dimensional plane, but also includes a pair of first guide portions 101a and 101b and the like. It is also possible to correct the rotational deviation by rotating 10 in a two-dimensional plane. Accordingly, the lens jig 100 can accurately guide and store the cut lens 10 in the holding portion 110 in the lens jig 100 (see FIG. 1B). That is, the cut lens 10 can be inserted such that both axes AX, AY and the intersection AO in FIG. 1A and the like coincide with both reference axes BX, BY and the intersection BO. For this reason, the cut lens 10 can be assembled to various optical devices while being mounted on the lens jig 100.

  As described above, when viewed in plan in FIG. 2A or FIG. 3A, each of the first to fourth edge portions EG1 to EG4 is a circle CI having a radius R from the intersection AO (BO). Further, the extending direction of the edge portions EG1 to EG4 is substantially along the circle CI. As a result, as shown in FIG. 3A, the guide portion 101 can give a constant rotational moment in the directions indicated by the arrows A1 and B1 regardless of the value of the angle θ. For example, as shown in FIG. 3B, when the first to fourth edge portions EG1 to EG4 are outside the circle CI, portions of the cut lens 10 other than the lens side surfaces 11a and 11b that are straight side surfaces. There is a possibility that the corner CR is in contact with the second and fourth tapered surfaces T2, T4. In this case, the direction of the force acting in the directions indicated by the arrows A1 and B1 is not constant because it depends on the curved surface shape of the corner CR and the value of the angle θ. Accordingly, the rotation operation of the cut lens 10 may not be performed smoothly, and alignment may not be performed accurately. Furthermore, in this case, there is a possibility that an excessive force is applied to the surface of the cut lens 10 such as the corner CR and the like is damaged. On the other hand, in the present embodiment, as described above, since a constant rotational moment can be applied to the lens side surfaces 11a and 11b, such a situation does not occur.

  As described above, the lens jig 100 for the cut lens 10 according to the present embodiment has a simple structure that does not require the use of a special instrument or the like, but does not damage the optical surface or the like of the cut lens 10. The positional deviation at the time of insertion of the cut lens 10 can be accurately corrected and can be securely stored in a predetermined location. Further, the alignment of the cut lens 10 does not require a special operation such as insertion from an oblique direction, and it is easy to automatically perform the storing operation using a mechanical mechanism.

  FIG. 4 shows a modification of the lens jig 100 according to this embodiment, and is a plan view corresponding to FIG. The lens jig 100 according to the present modification is the same as the lens jig 100 shown in FIG. 2A and the like except for the shape of the pair of first guide portions 101a and 101b. Description of is omitted.

  In the present modified example, in the pair of first guide portions 101a and 101b, as shown in the figure, the central portions CP of the second and fourth tapered surfaces T2 ′ and T4 ′ of the first guide portions 101a and 101b are on the center side. It has a shape that protrudes toward it. Accordingly, the shapes of the second and fourth tapered surfaces T2 ′ and T4 ′ are both curved surfaces constricted at the central portion CP. Also in this case, a rotational moment is imparted to the cut lens 10 by the edge portions EG1 to EG4, and in some cases, in addition to these, the second and fourth tapered surfaces T2 ′ and T4 ′ further act. Thus, the rotational deviation at the time of mounting can be accurately corrected, and the cut lens 10 can be reliably stored in the holding portion 110 which is a predetermined location.

  Although the lens jig 100 according to the present embodiment has been described above, the glass lens jig according to the present invention is not limited to the above.

  First, in the present embodiment, a total of four edge portions EG1 to EG4 are included. However, for example, the first and second edge portions EG1 and EG2 may be included. In this case, when the cut lens 10 is placed, the cut lens 10 may be preliminarily rotated in the counterclockwise direction so that the cut lens 10 does not rotate in the clockwise direction.

  On the contrary, the number of edge portions is not limited to four and may be more than that as long as an appropriate moment can be applied to the edge portions by maintaining symmetry.

  Further, in the present embodiment, one edge portion that functions as a rotation imparting portion is formed as a convex shape having a slight curved surface at the intersection of two tapered surfaces, but the tapered surface is not assumed. Further, the edge portion as the rotation imparting portion may be formed by a gentle curved surface.

  In this embodiment, the lens jig 100 corresponding to the cut lens 10 that is an I-cut lens is used. However, the target held by the lens jig 100 is not limited to the I-cut lens, and a pair of straight side surfaces is used. It is also possible to have various optical elements.

(A), (B) is a perspective view explaining the lens jig | tool which concerns on this embodiment, and the lens corresponding to this. (A)-(C) are the top view and sectional drawing which show typically the mode of the cut lens of the state accommodated in the jig | tool for lenses. (A), (B) is the typical top view for demonstrating the accommodation operation | movement of a cut lens, and its comparison figure. It is a top view shown typically about the modification of the jig for lenses.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Cut lens, 11a, 11b ... Lens side surface, AX, AY ... Axis, AO ... Intersection, AZ ... Optical axis, 100 ... Lens jig, 110 ... Holding part, 111a, 111b ... Side plane, SS ... Support surface (Reference plane), 101 ... guide portion, 101a, 101b ... first guide portion, 102a, 102b ... second guide portion, T1-T6 ... tapered surface, EG1-EG4 ... edge portion, 120 ... frame, BX, BY ... reference axis, BO ... intersection

Claims (9)

A holding unit that has first and second side planes corresponding to a pair of parallel lens side surfaces of the cut lens to be held, and holds the cut lens between the first and second side planes;
Rotation that is disposed on the outer side and on the upper side of the holding portion, and applies a rotational moment about the optical axis of the cut lens to the lens side surface to guide the cut lens between the first and second side planes. A lens jig comprising: a guide portion having an imparting portion. The rotation imparting portion has convex first and second edge portions formed close to the outer sides of the first and second side planes, respectively.
The first edge portion is a directional component heading upward and a directional component heading toward the central position side with reference to a predetermined starting point provided between the center position of the corresponding first side plane and one end portion. And extending in an edge direction having an outward direction component,
The second edge portion has a predetermined starting point provided between a corresponding central position of the second side plane and the other end located on the side opposite to one end of the first side plane. 2. The lens jig according to claim 1, wherein the lens jig extends in an edge direction having a direction component directed upward, a direction component directed toward the center position, and a direction component directed outward as a reference.   The rotation imparting portion is disposed adjacent to the outside of the first side plane on the opposite side of the first edge portion across the center position of the first side plane and is opposite to the first edge portion. And a second edge portion disposed on the opposite side of the second edge portion in the vicinity of the outer side of the second side surface with a center position of the second side surface interposed therebetween. The lens jig according to claim 2, further comprising a fourth edge portion that applies a rotation moment opposite to the lens side surface. The first edge portion is formed by an intersection of the first inclined surface and the second inclined surface,
The first inclined surface is a second reference extending in a normal direction of the first and second side planes in a plane perpendicular to the axial direction of the first reference axis parallel to the extending direction of the first and second side planes. The second inclined surface is disposed at a predetermined angle by rotating the shaft around an axis, and the second inclined surface is formed by rotating a surface perpendicular to the axial direction of the second reference axis around the first reference axis. Arranged at a predetermined angle,
The second edge portion is formed by the intersection of the third inclined surface and the fourth inclined surface,
The third inclined surface is disposed to be inclined at a predetermined angle by rotating a surface perpendicular to the axial direction of the first reference axis about the second reference axis, and the fourth inclined surface is arranged to be The surface perpendicular to the axial direction of the two reference axes is tilted by a predetermined angle by rotating the surface around the first reference axis. 4. Lens fixture.   The lens jig according to claim 4, wherein an inclination angle of each of the first to fourth inclined surfaces is 20 ° or less.   The rotation imparting portion is a cylinder whose radius is a length from a center position passing through the optical axis of the cut lens to a straight end point of the cut lens with a center axis extending in the vertical direction passing through a center position of the holding portion. The lens jig according to any one of claims 1 to 5, wherein the lens jig is present in a region.   The said guide part has a mortar-shaped curved surface extended upwards along the curved side surface which connects between a pair of said lens side surfaces of the said cut lens hold | maintained at the said holding | maintenance part. The lens jig according to any one of the above.   The rotation imparting portion is disposed rotationally symmetrically about a central axis that extends in a vertical direction through a center position of the holding portion. Lens fixture.   9. The lens jig according to claim 1, wherein the holding portion has a support surface that supports the cut lens on a lower side of the side surface of the lens. 10.

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