JP2013003172A - Contact lens holding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contact lens holding device capable of efficiently measuring curvature radii of respective spherical surfaces when measuring a curvature radius of a contact lens for vision correction on which a plurality of discontinuous spherical surfaces having respectively different curvature radii are formed.SOLUTION: A holding device 40 includes: a contact lens support part 110 for installing a contact lens; a fluctuation support part 90 for supporting the contact lens support part 110 fluctuatably around a lateral rotational axis; a lateral slide support part 70 for supporting the fluctuation support part 90 slidably in the lateral direction; a longitudinal slide support part 50 for supporting the lateral slide support part slidably in a longitudinal direction orthogonal to a lateral direction in a horizontal direction; and a base part 42 for fixing and supporting the longitudinal slide support part 50 and having an attachment member 46 to be attached to a holding device support part vertically movably installed on a measuring instrument.

Description

  The present invention relates to an apparatus used for a measuring apparatus for measuring optical characteristics (particularly, a radius of curvature) of a contact lens, and relates to an apparatus for holding a contact lens, and more particularly to a holding apparatus for a contact lens for correcting vision. is there.

  Conventionally, in a measuring apparatus for measuring the radius of curvature of a contact lens, as a table for placing a contact lens, as shown in Patent Document 1, the table is moved up and down by a feed mechanism using a motor and a feed screw. Exists.

  Further, as shown in FIG. 6, the contact lens for correcting vision has a second spherical surface 302 outside the first spherical surface 300, a third spherical surface 304 outside the second spherical surface 302, and a third spherical surface. 304 has a fourth spherical surface 306 outside the fourth spherical surface 306, and has a fifth spherical surface 308 outside the fourth spherical surface 306. The first spherical surface 300 has a circular shape in plan view, and the second spherical surface 302 to the second spherical surface 308. The five spherical surfaces 308 have a ring shape in plan view. The spherical surfaces in the first spherical surface 300 to the fifth spherical surface 308 have different radii of curvature, and the boundary between adjacent spherical surfaces is formed discontinuously. That is, a plurality of discontinuous spherical surfaces having different curvature radii are formed from the inner side (center side) to the outer side.

Japanese Patent Publication No.7-111390

  However, in the table and the feed mechanism of Patent Document 1, since the contact lens is only moved up and down, when a plurality of discontinuous spherical surfaces having different curvature radii as shown in FIG. 6 are provided, In order to measure the second spherical surface 302 to the fifth spherical surface 308, it is necessary to repeat the measurement by changing the direction of the contact lens installed on the pedestal and setting it on the pedestal, which makes it difficult to measure the radius of curvature. There is a problem.

  Therefore, the present invention can efficiently measure the curvature radius of each spherical surface in the plurality of spherical surfaces when measuring the curvature radius of the contact lens for correcting vision having a plurality of discontinuous spherical surfaces having different curvature radii. An object of the present invention is to provide a contact lens holding device that can be used.

  The present invention was created in order to solve the above-mentioned problems. First, a contact lens holding device used for a measuring device for measuring a radius of curvature of a contact lens, in which the contact lens is installed. A contact lens support portion (110) having a portion (119), and a swing support portion (90) that supports the contact lens support portion so as to be swingable about a rotation axis in the horizontal direction which is one direction in the horizontal direction. A left-right slide support portion (70) that supports the swing support portion so as to be slidable in the left-right direction, and a left-right direction slide support portion that is slidable in the front-rear direction that is perpendicular to the left-right direction in the horizontal direction. Supporting device support that can be moved up and down in the measuring device with the longitudinal slide support (50) and the base that fixes and supports the longitudinal slide support And having a base portion (42) having mounting portions (46) for attachment to.

  In the first configuration, a swing support portion, a left / right slide support portion, and a front / rear slide support portion are provided, and the left / right slide support portion and the swing support portion are moved in the front / rear direction by the front / rear direction slide support portion. The slide support part slides in the left-right direction by the left-right slide support part, and the contact lens support part swings around the rotation axis in the left-right direction by the swing support part. For a contact lens in which a plurality of spherical surfaces are formed from the inner side (center side) toward the outer side, the optical axis of each spherical surface can easily coincide with the optical axis of the objective lens of the measuring device. The radius of curvature can be measured efficiently. In other words, when the measurement of a certain spherical surface is completed and the next spherical surface is measured, the contact lens support portion may be swung by the swing support portion and slid in the front-rear direction by the front-rear direction slide support portion. The optical axis of each spherical surface and the optical axis of the objective lens of the measuring device can be easily matched.

  Second, in the first configuration, the contact lens support section (110) includes a contact lens installation tool (118) and a first support section body (112), and the contact lens installation tool ( 118) is a plate-shaped pedestal (118a), and an installation tool main body erected from the pedestal. The installation tool main body (118b) is provided with the concave installation part (119) on the upper surface thereof. The first support part body (112) has a placement surface (114a) for placing the contact lens installation tool, and is supported by a shaft part (107) coaxial with the worm wheel of the swing support part, The oscillating support portion (90) is provided with a worm (102) that is rotatable about a rotation axis in the front-rear direction, a first operation knob (104) that rotates the worm, and a worm that rotatably supports the worm. A support (100); A worm wheel (106) that is meshed with the web and is rotatable about a rotation axis in the left-right direction, and a shaft portion (107) that is fixed to the worm wheel coaxially with the worm wheel and supports the first support body. And a second support portion body (92) that supports the shaft portion rotatably, supports the worm support portion in a fixed manner, and is provided with a pair of through holes (94a) in the left-right direction. The left-right direction slide support part (70) supports the first support shaft (74) inserted through the through hole provided in the second support part main body, and the ends on both sides of the first support shaft, and the front-rear direction A pair of through-holes (72a-1), and screwed into a screw hole of the third support part body, a third support part body (72) provided with a screw hole on one side in the left-right direction, The front end of the second support part body comes into contact with the surface on one side in the left-right direction. A screw part (80), a second operation knob (82) for rotating the first screw part, and a third support part body and a second support part body provided by being wound along the peripheral surface of the first support shaft. And a first coiled spring (76) for urging the second support body to one side in the left-right direction with respect to the third support body. 50) supports the second support shaft (54) inserted through the through-hole provided in the third support portion main body, and both ends of the second support shaft, and has a screw hole on one side in the front-rear direction. A fourth support body (52) provided with a second screw that is screwed into a screw hole of the fourth support body and whose tip abuts against a surface on one side in the front-rear direction of the third support body. A part (60), a third operation knob (62) for rotating the second screw part, and a winding part provided around the peripheral surface of the second support shaft. A second coiled spring (56) provided between the body and the third support part body and biasing the third support part body to one side in the front-rear direction with respect to the fourth support part body. It is characterized by.

  In the second configuration, in the left-right direction slide support portion, the first screw portion is rotated by rotating the second operation knob on the third support portion body biased by the first coil spring. The position of the third support body in the left-right direction can be adjusted, and in the slide support section in the front-rear direction, the fourth support body that is biased by the second coiled spring is attached to the third operation knob. By rotating, the second screw part can be rotated to adjust the position of the fourth support body in the left-right direction, so that it can be finely adjusted in the front-rear direction and the left-right direction. Further, in the swing support portion, by rotating the first operation knob, the worm gear composed of the worm and the worm wheel is rotated to swing the contact lens support portion, so that the swing angle can be finely adjusted. Can do.

  Third, in the second configuration, the second support body (92) includes a horizontal member (94, 96) provided with the pair of through holes (94a) and a horizontal member. And a plate-like vertical member (98) that is erected on the upper surface and that faces in the vertical direction and faces in the front-rear direction, and the vertical member rotatably supports the shaft portion. The worm support portion is fixed to one of the left and right sides, the first support portion main body is provided on the opposite side of the surface on which the worm support portion is provided, and the third support portion main body (72) is substantially It has a substantially U-shaped plate shape having a rectangular plate-shaped main body portion (72a) and projecting portions (72b, 72c) protruding upward from the left and right end portions of the main body portion. The provided pair of through holes (72a-1) are formed in the main body, and the pair of first support shafts (74). The fourth support part body (52) is supported by a pair of projecting parts, and the fourth support part body (52) protrudes upward from the substantially rectangular plate-like body part (52a) and the front and rear ends of the body part. It has a substantially U-shaped plate shape having two projecting portions (52b, 52c), and the pair of second support shafts (54) is supported by the pair of second projecting portions. .

  Fourthly, a contact lens holding device used in a measuring device for measuring a radius of curvature of a contact lens, a contact lens support portion (110) having an installation portion (119) for installing the contact lens, and a contact lens A swing support portion (90) that supports the support portion so as to be swingable about a rotation axis in the horizontal direction, which is one direction in the horizontal direction, and the swing support portion in a direction perpendicular to the horizontal direction in the horizontal direction. A front / rear direction slide support (50 ') that is slidably supported in a certain front / rear direction, a left / right direction slide support (70') that supports the front / rear direction slide support so as to be slidable in the left / right direction, and a left / right direction slide support A base portion (42) having an attachment portion for attaching to a holding device support portion provided so as to be movable up and down in the measurement device. And having a, the.

  In the fourth configuration, the swing support portion, the left-right direction slide support portion, and the front-rear direction slide support portion are provided, and the left-right direction slide support portion causes the front-rear direction slide support portion and the swing support portion to move in the left-right direction. The sliding support part slides in the front-rear direction by the front-rear direction slide support part, and the contact lens support part swings about the rotation axis in the left-right direction by the swing support part. For a contact lens in which a plurality of spherical surfaces are formed from the inner side (center side) toward the outer side, the optical axis of each spherical surface can easily coincide with the optical axis of the objective lens of the measuring device. The radius of curvature can be measured efficiently. In other words, when the measurement of a certain spherical surface is completed and the next spherical surface is measured, the contact lens support portion may be swung by the swing support portion and slid in the front-rear direction by the front-rear direction slide support portion. The optical axis of each spherical surface and the optical axis of the objective lens of the measuring device can be easily matched.

  Fifth, in the fourth configuration, the contact lens support section (110) includes a contact lens installation tool (118) and a first support section main body (112). 118) is a plate-shaped pedestal (118a), and an installation tool main body erected from the pedestal. The installation tool main body (118b) is provided with the concave installation part (119) on the upper surface thereof. The first support part body (112) has a placement surface (114a) for placing the contact lens installation tool, and is supported by a shaft part (107) coaxial with the worm wheel of the swing support part, The oscillating support portion (90) is provided with a worm (102) that is rotatable about a rotation axis in the front-rear direction, a first operation knob (104) that rotates the worm, and a worm that rotatably supports the worm. A support (100); A worm wheel (106) that is meshed with the web and is rotatable about a rotation axis in the left-right direction, and a shaft portion (107) that is fixed to the worm wheel coaxially with the worm wheel and supports the first support body. And a second support body (92) that supports the shaft portion rotatably, supports the worm support portion fixedly, and is provided with a pair of through holes (94a) in the front-rear direction. The front / rear direction slide support portion (50 ′) supports the first support shaft (54) inserted through the through hole provided in the second support portion main body, and the ends on both sides of the first support shaft. A pair of through holes (52a-1) are provided in the direction, and screwed into the screw holes of the third support body and the third support body (52) provided with a screw hole on one side in the front-rear direction. The tip of the second support part body comes into contact with the surface on one side in the front-rear direction. A first screw part (60), a first operation knob (62) for rotating the first screw part, and a winding provided along the peripheral surface of the first support shaft, a third support part body and a second support part A first coiled spring (56) provided between the main bodies and biasing the second support body to one side in the front-rear direction with respect to the third support body; (70 ′) supports the second support shaft (74) inserted through the through-hole provided in the third support portion main body and the ends on both sides of the second support shaft, and on one side in the left-right direction. A fourth support body (72) provided with a screw hole and a screw hole of the fourth support body, and a tip of the fourth support body (72) is in contact with a surface on one side in the left-right direction of the third support body. A second screw part (80), a second operation knob (82) for rotating the second screw part, and a fourth support provided by being wound along the peripheral surface of the second support shaft. A second coil spring (76) provided between the main part body and the third support part main body and biasing the third support part main body to one side in the left-right direction with respect to the fourth support part main body. It is characterized by that.

  In the fifth configuration, in the front-rear direction slide support portion, the first screw portion is rotated by rotating the second operation knob on the third support portion body biased by the first coil spring. The left and right position of the third support body can be adjusted. In the left and right slide support, the third operation knob is rotated by rotating the fourth support body biased by the second coil spring. By doing so, the position of the fourth support body in the left-right direction can be adjusted by rotating the second screw part, so that it can be finely adjusted in the front-rear direction and the left-right direction. Further, in the swing support portion, by rotating the first operation knob, the worm gear composed of the worm and the worm wheel is rotated to swing the contact lens support portion, so that the swing angle can be finely adjusted. Can do.

  Sixth, in the fifth configuration, the second support body (92) includes a horizontal member (94, 96) provided with the pair of through holes (94a) and a horizontal member. And a plate-like vertical member (98) that is erected on the upper surface and that faces in the vertical direction and faces in the front-rear direction, and the vertical member rotatably supports the shaft portion. The worm support is fixed to one of the left and right sides, the first support body is provided on the opposite side of the surface on which the worm support is provided, and the third support body (52) is substantially It has a substantially U-shaped plate shape having a rectangular plate-shaped main body portion (52a) and protruding portions (52b, 52c) protruding upward from the left and right end portions of the main body portion, in the left-right direction. The provided pair of through holes (52a-1) are formed in the main body, and the pair of first support shafts (54). The fourth support body (72) is supported by a pair of protrusions, and the fourth support body (72) protrudes upward from the substantially rectangular plate-like body (72a) and the front and rear ends of the body. It has a substantially U-shaped plate shape having two projecting portions (72b, 72c), and the pair of second support shafts (74) is supported by the pair of second projecting portions. .

  Seventhly, in the third or sixth configuration, the horizontal member in the second support body (92) includes a substantially rectangular parallelepiped slide body (94) and a plate fixed to the upper surface of the slide body. And a pair of through holes (94a) in the left-right direction are formed in the slide body, and the vertical member is fixed to the upper surface of the horizontal plate part. To do.

  The following configuration may be adopted as the eighth configuration. That is, “a contact lens measuring device for measuring a radius of curvature of a contact lens, the contact lens holding device having the first, second, third, fourth, fifth, sixth or seventh configuration, and a contact lens holding device mounting portion A holding device support portion (28) attached to (46) and slidably supporting the contact lens holding device in the vertical direction; vertical movement mechanism portions (22, 24) for moving the holding device support portion up and down; and an eyepiece (202), an objective lens (210) provided between the eyepiece and the contact lens to be measured, a light source (204) for irradiating light, and a target (206) for projecting an image by light from the light source And a half mirror (208) provided between the eyepiece lens and the objective lens for reflecting the target image to the objective lens The vertical position of the holding device support when the contact lens holding device is moved in the vertical direction by the system component (200) and the vertical movement mechanism and the real image of the target image is formed by the optical system component. And a display device (30) for displaying a vertical length between vertical positions of the holding device support portion when a virtual image of the target layer is formed by the optical system component. Lens measuring device. "

  According to the eighth configuration, when the contact lens holding device is moved in the vertical direction by the vertical movement mechanism unit and the real image of the target image is formed by the optical system configuration unit, the vertical position of the holding device support unit And the vertical length between the vertical positions of the holding device support when the virtual image of the target layer is formed by the optical system component is displayed on the display device, so measure the radius of curvature of the measured spherical surface can do.

  Further, since the contact lens holding device is provided with a swing support portion, a left-right direction slide support portion, and a front-rear direction slide support portion, a plurality of discontinuous spherical surfaces having different curvature radii are provided from the inner side (center side) to the outer side. The optical axis of each spherical surface and the optical axis of the objective lens of the measuring device can be easily matched with the contact lens formed toward the surface, and the radius of curvature of each spherical surface can be measured efficiently.

  According to the contact lens holding device according to the present invention, the swing support portion, the left-right direction slide support portion, and the front-rear direction slide support portion are provided, so that a plurality of discontinuous spherical surfaces having different curvature radii are inside (center side). For the contact lens formed from the outside to the outside, the optical axis of each spherical surface and the optical axis of the objective lens of the measuring device can be easily matched, and the curvature radius of each spherical surface can be measured efficiently. it can.

It is a perspective view which shows the measuring apparatus for contact lenses. It is a disassembled perspective view which shows the measuring apparatus for contact lenses. It is a front perspective view which shows a contact lens holding device. It is a back perspective view showing a contact lens holding device. It is explanatory drawing for demonstrating the measuring apparatus for contact lenses. It is explanatory drawing explaining the contact lens measured with the measuring apparatus for contact lenses, (a) is a top view, (b) is AA sectional drawing of (a). It is explanatory drawing explaining the measuring method by the measuring apparatus for contact lenses. It is explanatory drawing explaining the measuring method by the measuring apparatus for contact lenses. It is a front perspective view which shows the other example of a contact lens holding device.

  In the present invention, when measuring the curvature radius of a contact lens for correcting vision having a plurality of discontinuous spherical surfaces having different curvature radii, the curvature radius of each spherical surface in the plurality of spherical surfaces can be efficiently measured. The object of providing a contact lens holding device was realized as follows.

  A contact lens measuring device (hereinafter referred to as “measuring device”) 5 according to the present invention is a device for measuring the optical characteristics (particularly, the radius of curvature) of a contact lens, and is configured as shown in FIGS. The apparatus main body 7 and a contact lens holding device (hereinafter referred to as “holding device”) (which may be referred to as a “contact lens supporting device”) 40 that can be attached to and detached from the device main body 7 are provided.

  Here, the apparatus main body 7 includes a housing section 10, a coarse movement knob 22, a fine movement knob 24, a cylindrical body 26, a holding apparatus support section 28, a display section 30, and the like. In the drawings, the Y1-Y2 direction is a direction perpendicular to the X1-X2 direction, and the Z1-Z2 direction is a direction perpendicular to the X1-X2 direction and the Y1-Y2 direction.

  The housing unit 10 includes a base part 12 having an installation surface for installing the measuring device 5, a standing part 14 standing from the back side of the base part 12, and an upper part of the standing part 14 from the upper part to the front side. The front protrusion 16 protruded, the lower protrusion 18 protruded downward from the bottom surface of the front protrusion 16, and the side protrusion 20 protruded laterally from the side surface of the lower protrusion 18.

  The coarse movement knob 22 is attached to the left side surface of the upright portion 14 of the housing unit 10, and the vertical movement of the holding device support section 28 is roughly adjusted by rotating the coarse movement knob 22. can do. Further, the fine movement knob 24 is attached to the side of the right side surface of the standing part 14 of the housing section 10, and fine adjustment of the vertical movement of the holding device support section 28 is performed by rotating the fine movement knob 24. Can do. Naturally, a mechanism (not shown) for moving the holding device support portion 28 up and down is provided in the housing portion 10. The mechanism for moving the holding device support 28 up and down, the coarse movement knob 22 and the fine movement knob 24 constitute a vertical movement mechanism section.

  Further, a pair of cylindrical bodies 26 are formed so as to protrude obliquely upward on the front side from the front projecting portion 16, and an eyepiece lens 202 (strictly, a part of the eyepiece lens 202) is attached to the cylindrical body 26. Yes.

  Further, the holding device support portion 28 is attached to the upright portion 14 so as to be movable up and down, and has an attachment plate portion 28a protruding to the front side (Y1 side). The holding device 40 is attached to the attachment plate portion 28a.

  Moreover, the display part (display device) 30 is provided in the upper end area | region of the front side of the standing part 14, and the value of the measured curvature radius is displayed.

  The holding device 40 includes a base portion 42, a front-rear direction slide support portion 50 fixed to the base portion 42, and a left-right direction slide support portion 70 supported by the front-rear direction slide support portion 50 so as to be slidable in the front-rear direction. The swing support part 90 is supported by the left / right slide support part 70 so as to be slidable in the left / right direction, and the contact lens support part 110 is supported by the swing support part 90 so as to be swingable.

  The base portion 42 has a substantially rectangular (substantially rectangular) plate-like portion and an attachment portion for the holding device support portion 28, and is attached to the base portion main body portion 44 and the base portion main body portion 44. And an attachment member (attachment portion) 46.

  Here, the base portion main body portion 44 has a plate shape and has a rectangular cutout portion 44a on the back side (Y2 side). The attachment plate portion 28a is disposed in the cutout portion 44a when the holding device 40 is attached to the attachment plate portion 28a.

  Further, the mounting member 46 has a substantially U-shaped plate shape, a main body portion 46a having a rectangular plate shape, and projecting portions 46b protruding downward from the left and right end portions of the bottom surface of the main body portion 46a. , 46c, and attached to the upper surface on the back side of the base portion main body 44, and the projecting portions 46b and 46c are provided in a total of four insertion holes 47-1 (that is, two left and right sides). The threaded portion 47a is inserted into the two insertion holes inserted into the main body portion 46a and the protruding portion 46b and the two insertion holes inserted into the main body portion 46a and the protruding portion 46c), and provided in the base portion main body portion 44. It is fixed (or may be fixed) by being screwed into the formed screw hole. Further, two insertion holes 47-2 are formed on the left and right sides inside the insertion hole 47-1 through which the screw part 47a is inserted, and the screw part 47b is inserted into the insertion hole 47-2 to attach the mounting plate. By screwing into the screw hole 28b of the portion 28a, the base portion 42 is fixed (may be fixed) to the mounting plate portion 28a. That is, the attachment member 46 is an attachment portion for attaching to the holding device support portion 28 provided in the measuring device 5 so as to be movable up and down.

  Further, the front-rear direction slide support part 50 includes a support part body (fourth support part body) 52 having a substantially U-shaped plate shape, and a pair of support shafts (second support shafts) 54 provided on the support part body 52. A coil spring (second coil spring) 56 provided on the pair of support shafts 54, and an operation section (second operation) for adjusting the slide amount in the front-rear direction of the support body 72 of the left-right slide support section 70. Part) 58.

  The support portion main body 52 includes a main body portion 52a having a rectangular (may be substantially rectangular) plate shape, and a protruding portion (second protruding shape) protruding upward from both front and rear end portions of the upper surface of the main body portion 52a. Part) 52b, 52c, and the width in the left-right direction of the protruding parts 52b, 52c is the same as the width in the left-right direction of the main body 52a. Through-holes 72a-1 for inserting the pair of support shafts 54 are formed in the projecting portions 52b and 52c in the front-rear direction, and the operating portion 58 is provided in the projecting portion 52b to which the operating portion 58 is attached. A screw hole to be screwed into the screw portion 60 is formed. That is, the through-holes that pass through the support shaft 54 are located at equal positions in the left-right direction of the projecting portions 52b, 52c (that is, positions that are equidistant from the center position in the left-right direction of the projecting portions 52b, 52c (substantially equidistant The through holes that pass through the support shaft 54 are formed at the same height in the vertical direction. The screw hole is provided at a position between the through holes through which the support shaft 74 is inserted (in the front-rear direction, the center position of the projecting portion 52b (may be substantially the center position)).

  The support shaft 54 has a cylindrical bar shape, is inserted through the through holes of the protruding portions 52b and the protruding portions 52c, and is fixed (fixed) to the protruding portions 52b and 52c. The pair of support shafts 54 are provided in parallel to each other, and both face the front-rear direction (Y1-Y2 direction). The direction of the pair of support shafts 54 is parallel to the upper surface of the base portion main body 44. The support shaft 54 is inserted into a pair of through holes 72a-1 formed in the support portion main body 72 of the left-right direction slide support portion 70, and supports the support portion main body 72 so as to be slidable in the front-rear direction.

  The coiled spring 56 is attached to each support shaft 54 in the pair of support shafts 54 by inserting the support shafts 54 (that is, by being provided in a state of being wound around the peripheral surface of the support shafts 54). The support portion main body 72 is attached at a position between the main body portion 72a and the protruding portion 52c. Thereby, the coil spring 56 urges the support portion main body 72 toward the front side (Y1 side) with respect to the support portion main body 52.

  The operation portion 58 includes a screw portion (second screw portion) 60 having a thread groove formed on the peripheral surface, and an operation knob (second operation knob) 62 provided to be fixed to the front end portion of the screw portion 60. The operation knob 62 has a substantially cylindrical outer shape. When the operation knob 62 is rotated, the screw portion 60 is rotated and moved in the front-rear direction with respect to the protruding portion 52b. Since the end portion on the back side of the screw portion 60 is in contact with the front side surface of the main body portion 72a of the support portion main body 72, and the support portion main body 72 is urged to the front side by the coiled spring 56, the screw portion The support part main body 72 slides to the front side by moving 60 to the front side, and the support part main body 72 slides to the back side by moving the screw part 60 to the back side.

  The left-right direction slide support part 70 has a substantially U-shaped plate-like support part body (third support part body) 72 and a pair of support shafts (first support shafts) 74 provided on the support part body 72. And a coil spring (first coil spring) 76 provided on the pair of support shafts 74 and an operation section (first operation section) for adjusting the sliding amount of the slide body 94 of the swing support section 90 in the front-rear direction. 78.

  The support portion main body 72 has a main body portion 72a having a rectangular (may be substantially rectangular) plate shape, and projecting portions 72b and 72c protruding upward from the left and right ends of the upper surface of the main body portion 72a. The front and rear widths of the protrusions 72b and 72c are the same as the front and rear width of the main body 72a. Through-holes for inserting the pair of support shafts 74 are formed in the projecting portions 72b and 72c in the left-right direction, and the threaded portion of the operation unit 78 is installed in the projecting portion 72b to which the operating unit 78 is attached. A screw hole that is screwed into the hole 80 is formed. That is, the through-holes that pass through the support shaft 74 are located at equal positions in the front-rear direction of the projecting portions 72b and 72c (that is, positions that are equidistant from the center position in the left-right direction of the projecting portions 72b and 72c (substantially equidistant). The pair of through-holes through which the support shaft 74 is inserted are formed at the same height in the vertical direction. The screw hole is provided at a position between the through holes through which the support shaft 74 is inserted (in the front-rear direction, the center position of the projecting portion 72b (may be substantially the center position)).

  In addition, a through hole 72a-1 for inserting the pair of support shafts 54 in the front-rear direction is formed in the main body 72a. The through holes 72a-1 are provided at equal positions in the left-right direction of the main body portion 72a (that is, positions that are equidistant from the center position in the left-right direction of the main body portion 72a (may be substantially equidistant positions)). Yes.

  The support shaft 74 has a cylindrical bar shape, is inserted through the through holes of the projecting portions 72b and 72c, and is fixed (fixed) to the projecting portions 72b and 72c. The pair of support shafts 74 are provided in parallel to each other, and both face the front-rear direction (Y1-Y2 direction). The direction of the pair of support shafts 74 is parallel to the upper surface of the base main body 44. The support shaft 74 is inserted into a pair of through holes 94a formed in the plate-like portion 94 of the swing support portion 90, and supports the plate-like portion 94 so as to be slidable in the left-right direction.

  The coil springs 76 are attached to the support shafts 54 of the pair of support shafts 74 when the support shafts 74 are inserted (that is, provided in a state of being wound around the peripheral surface of the support shaft 74). It is attached at a position between the plate-like portion 94 and the protruding portion 72c. Thus, the coil spring 76 biases the plate-like portion 94 toward the left side (X1 side) with respect to the support portion main body 72.

  The operation portion 78 includes a screw portion (first screw portion) 80 having a thread groove formed on the peripheral surface, and an operation knob (first operation knob) provided to be fixed to an end portion on the left side surface side of the screw portion 80. The operation knob 82 has a substantially cylindrical outer shape. When the operation knob 82 is rotated, the screw portion 80 is rotated and moved in the left-right direction with respect to the protrusion 72b. Since the end portion on the right side (X2 side) of the screw portion 80 is in contact with the left side surface of the plate portion 94 and the plate portion 94 is biased to the left side by the coil spring 76. The plate part 94 slides to the left side by moving the screw part 80 to the left side, and the plate part 94 slides to the right side by moving the screw part 80 to the right side. It has become.

  The swing support unit 90 includes a support unit main body (second support unit main body) 92, a worm support unit 100, a worm 102, an operation knob 104, and a worm wheel 106.

  Here, the support portion main body 92 includes a slide body 94 that is slidably supported by the support shaft 74 in the left-right direction, a horizontal plate portion 96 fixed to the upper surface of the slide body 94, and a right side of the upper surface of the horizontal plate portion 96. And a vertical plate portion (vertical member) 98 supported by the end portion on the surface side.

  The slide body 94 has a rectangular parallelepiped shape (may be a substantially rectangular parallelepiped shape, a plate shape, or a substantially plate shape), and a pair of through holes 94a for inserting the support shaft 74 is formed in the left-right direction. The pair of through holes 94a are formed at equal positions in the front-rear direction of the slide body 94 (that is, positions that are equidistant from the center position of the slide body 94 in the front-rear direction (may be positions at substantially equal distances)). .

  The horizontal plate portion 96 has a square plate shape, and is fixed (may be fixed) to the upper surface of the slide body 94 (fixed by a bolt 96a). The upper surface of the horizontal plate portion 96 faces the horizontal direction. The slide body 94 and the horizontal plate portion 96 constitute a horizontal member.

  Further, the vertical plate portion 98 has a plate shape, and is perpendicular to the horizontal plate portion 96 (that is, is erected in the vertical direction and fixed (fixed) to the horizontal plate portion 96). Two corners at the upper end of the vertical plate portion 98 are chamfered, and an opening is formed at the attachment position of the worm wheel 106 of the vertical plate portion 98, and the left side of the worm wheel 106 is left. A shaft portion 107 connected from the end on the surface side is rotatably supported by the vertical plate portion 98. That is, the worm wheel 106 is pivotally supported by the vertical plate portion 98 via the shaft portion 107. .

  Further, the worm support part 100 is attached to the right side surface of the vertical plate part 98 (fixed and attached by a screw 98a) and rotatably supports the worm. The worm 102 is supported by the worm support portion 100 and rotates about a rotation axis in the front-rear direction. The operation knob 104 is connected to the end portion on the front side of the worm 102.

  The worm wheel 106 is rotatably supported by the vertical plate portion 98, and the rotation axis of the worm wheel 106 is in the left-right direction. The gears of the worm wheel 106 and the worm 102 mesh with each other. The worm wheel 106 and the worm 102 constitute a worm gear. A shaft portion 107 coaxial with the worm wheel 106 (that is, having a common axis) is fixedly provided from an end portion on the left side surface side of the worm wheel 106, and the shaft portion 107 is provided at an opening of the vertical plate portion 98. It is inserted and pivotally supported so as to be rotatable with respect to the vertical plate portion 98.

  The vertical plate 98 is attached to the end on the left side of the upper surface of the horizontal plate 96, the worm support 100 and the worm wheel 106 are provided on the left side of the vertical plate 98, and the support main body 112 is mounted on the vertical plate. You may provide in the left side surface side of the part 98. FIG.

  The contact lens support unit 110 includes a support unit main body (first support unit main body) 112 and a contact lens installation tool 118 that is detachably installed on the installation plate unit 114 of the support unit main body 112.

  Here, the support portion main body 112 includes an installation plate portion 114 and a vertical plate portion 116 that is fixed to the surface on the right side surface of the installation plate portion 114 and that faces in a direction perpendicular to the installation plate portion 114. The vertical plate portion 116 is formed with a hole for fitting the shaft portion 107 provided continuously from the left side end portion of the worm wheel 106. That is, the shaft portion 107 is fixed to the vertical plate portion 116 (that is, the vertical plate portion 116 is pivotally supported by the worm wheel 106), and the contact lens support portion is rotated by rotating the worm wheel 106. 110 is configured to swing around a rotation axis in the left-right direction. That is, the support portion main body 112 is provided on the left side surface side of the vertical plate portion 98.

  A circular recess 114a for installing the contact lens installation tool 118 is formed on the upper surface of the installation plate 114, and a cylindrical detent 114b is formed at the end of the recess 114a. The recess 114a serves as a placement surface on which the contact lens placement tool is placed.

  The contact lens installation tool 118 includes a substantially circular plate-like base part 118a and an installation tool main body part 118b erected in a direction perpendicular to the base part 118a from the upper surface of the base part 118a. Has a cylindrical peripheral surface, and a spherical concave portion (contact lens installation portion) 119 is formed at the upper end, and a cross-shaped cut is formed in the spherical surface of the concave portion 119.

  In addition, a recess 120 for engaging with the rotation stopper 114b is formed in the base portion 118a.

  In the present embodiment, the left side surface is one side in the left-right direction, and the front side is one side in the front-rear direction.

  Since the holding device 40 is configured as described above, by rotating the operation knob 62 of the front / rear direction slide support unit 50, the left / right direction slide support unit 70 and the swing support unit 90 are moved in the front / rear direction (that is, horizontal). (When the operation knob 62 is rotated to the right in the front view), the left / right direction slide support part 70 and the swing support part 90 slide to the back side, and when the operation knob 62 is rotated leftward, the left / right direction slide support part. 70 and the swing support part 90 slide to the front side), and by rotating the operation knob 82 of the left and right direction slide support part 70, the swing support part 90 slides in the left and right direction (that is, the horizontal direction in the horizontal direction). (In other words, when the operation knob 82 is rotated to the right in the left side view, the swing support portion 90 is slid to the right side and rotated to the left. A pivot support portion 90 slides in the left side), by rotating the operation knob 104 of the pivot support 90, the contact lens supporting unit 110 swings around the rotation axis in the lateral direction. That is, when the operation knob 104 is rotated to the right in front view, the contact lens support unit 110 is rotated to the front side about the rotation axis in the left-right direction (the central axis of the shaft unit 107) and to the left side. As a result, the contact lens support portion 110 rotates to the back side about the rotation axis in the left-right direction (the center axis of the shaft portion 107) on the front side.

  The holding device 40 is attached to the mounting plate portion 28 a of the holding device support portion 28. That is, the holding device 40 is attached to the holding device support portion 28 by inserting the screw portion 47b into the insertion hole 47-2 of the mounting member 46 of the base portion 42 and screwing it into the screw hole 28b of the mounting plate portion 28a. It is done.

  Further, the optical system configuration unit 200 provided in the measuring apparatus 5 is configured as shown in FIG. 5, and includes an eyepiece lens 202, a light source 204, a target 206, a half mirror 208, and an objective lens 210. ing.

  The optical axis of the eyepiece 202 and the optical axis of the objective lens 210 coincide with each other, and an image of the target 206 (target image) irradiated by the light source 204 is projected to the objective lens 210 side through the half mirror 208. ing.

  The use state of the measuring apparatus 5 having the above configuration will be described. First, the contact lens to be measured is installed in the recess 119 of the installation tool main body 118 b of the contact lens installation tool 118. The contact lens L to be measured is a visual acuity contact lens, and as shown in FIG. 6, a plurality of discontinuous spherical surfaces having different curvature radii are formed from the inner side (center side) to the outer side. The first spherical surface 300 to the fifth spherical surface 308 are formed from the inner side toward the outer side, and each spherical surface has a different radius of curvature. The contact lens L has a circular outer shape in a plan view and a bottom view. When the contact lens L is installed, the contact lens L is installed in the recess 119 with the concave surface side (the side on which the first spherical surface 300 to the fifth spherical surface 308 are provided) facing upward.

  At that time, the swing support part 90 is arranged so that the installation plate part 114 is in the horizontal direction, the inner surface of the contact lens L is directed upward, and the optical axis K1 of the objective lens 210 and the first spherical surface 300 are aligned. The optical axis J1 is set to be parallel (that is, one boundary between the first spherical surface 300 and the second spherical surface 302 in a cross section obtained by cutting the contact lens L along a plane passing through the inner center P1 and the outer center P2. A straight line passing through the center P1 that is perpendicular to the straight line C1 connecting the point P3 and the other boundary point P4 (this is the optical axis J1 of the first spherical surface 300) (may be a straight line parallel to the cut surface). The lens 210 is parallel to the optical axis K1.

  Next, by operating the operation knob 62 of the front / rear direction slide support unit 50 and the operation knob 82 of the left / right direction slide support unit 70, the swing support unit 90 is slid in the front / rear direction and / or the left / right direction, and the objective lens 210. The contact lens L is positioned below the optical axis K1 so that the optical axis K1 of the objective lens 210 coincides with the optical axis J1 of the first spherical surface 300.

  Actually, whether or not the optical axis K1 of the objective lens 210 and the optical axis J1 of the first spherical surface 300 coincide with each other is determined by whether or not the target image is visible in the following steps. When the target image is not visible, the direction of the contact lens L and the position in the front-rear direction and / or the left-right direction are adjusted.

  In this state, a target image that has passed through the objective lens 210 is formed on the upper surface of the contact lens L (in order to form a target image, the holding device support 28 is moved up and down by the coarse adjustment knob 22 and the fine adjustment knob 24. The real image of the target image is made visible through the eyepiece lens 202, and then the objective lens 210 is moved away from the contact lens L (that is, the holding device support 28 is moved upward). Reflecting and forming an image on the upper surface of the contact lens L so that a virtual image (or an aerial image) of the target image can be seen, and the height of the holding device support portion 28 where the real image can be seen and the holding device support where the virtual image can be seen The length W of the height difference in the vertical direction of the part 28 (this is the value of the radius of curvature) is calculated and displayed on the display unit 30. As described above, the radius of curvature of the first spherical surface 300 is measured.

  Next, the operation knob 104 of the swing support unit 90 is operated to swing the contact lens support unit 110 with respect to the left-right direction slide support unit 70 (particularly, the vertical plate unit 98). The axis K1 is made parallel to the optical axis J2 of the second spherical surface 302 (see FIG. 8A), and the operation knob 62 of the front / rear direction slide support unit 50 is further operated to move the left / right direction slide support unit 70 and The swing support portion 90 is slid in the front-rear direction so that the optical axis K1 of the objective lens 210 coincides with the optical axis J2 of the second spherical surface 302. That is, in a cross section obtained by cutting the contact lens L along a plane passing through the inner center P1 and the outer center P2, the boundary point P3 between the second spherical surface 302 and the first spherical surface 300, and the boundary between the second spherical surface 302 and the third spherical surface 304. A straight line that is perpendicular to the straight line C2 connecting the point P5 and parallel to the cut surface (this is the optical axis J2 of the second spherical surface 302) is made to coincide with the optical axis K1 of the objective lens 210.

  That is, the distance between the second spherical surface 302 and the center of rotation of the contact lens support portion 110 (that is, the shaft portion 107) in the left side view is not necessarily the same as the radius of curvature of the second spherical surface 302. If the unit 110 is simply rotated by operating the operation knob 104, the optical axis K1 and the optical axis J2 will be misaligned only by making the optical axis K1 of the objective lens 210 parallel to the optical axis J2 of the second spherical surface 302. Therefore, the contact lens L is slid in the front-rear direction by the front-rear direction slide support portion 50.

  Actually, whether or not the optical axis K1 of the objective lens 210 and the optical axis J1 of the first spherical surface 300 coincide with each other is determined by whether or not the target image is visible in the following steps. When the target image is not visible, the direction of the contact lens L and the position in the front-rear direction and / or the left-right direction are adjusted.

  Thereafter, similarly to the above, the difference between the position where the real image of the target image can be seen and the position where the virtual image can be seen is calculated, and the radius of curvature of the second spherical surface 302 is measured.

  Thereafter, similarly, the radius of curvature of the third spherical surface 304 is measured, the radius of curvature of the fourth spherical surface 306 is measured, and the radius of curvature of the fifth spherical surface 308 is measured.

  As described above, according to the measuring device 5 of the present embodiment, particularly the holding device 40, a plurality of discontinuous spherical surfaces having different curvature radii are formed from the inner side (center side) to the outer side. When measuring the radius of curvature of each spherical surface of the lens, the contact lens can be slid in the front-rear direction and the left-right direction, and can be swung around the central axis in the left-right direction. And the radius of curvature of each spherical surface can be easily measured. That is, when the measurement of a certain spherical surface is completed and the next spherical surface is measured, the contact lens support portion 110 is swung by the swing support portion 90 and slid in the front-rear direction by the front-rear direction slide support portion 50. Therefore, the optical axis of the objective lens and the optical axis of each spherical surface can be easily matched. When the spherical surface is first measured, it is necessary to slide the swing support portion in the front-rear direction and / or the left-right direction so that the contact lens L is positioned below the objective lens 210. The left-right direction slide support part 70 is also required.

  Further, in the left-right direction slide support portion 70, the screw portion 80 is rotated by rotating the operation knob 82 of the support portion main body 72 biased by the coiled spring 76, so that the left-right direction of the swing support portion 90. Further, in the longitudinal slide support portion 50, the screw portion 60 is rotated by rotating the operation knob 62 of the support portion main body 52 biased by the coiled spring 56. Since the position in the front-rear direction of the left-right direction slide support portion 70 can be adjusted, it can be finely adjusted in the front-rear direction and the left-right direction. Further, in the swing support portion 90, by rotating the operation knob 104, the worm gear composed of the worm 102 and the worm wheel 106 is rotated to swing the contact lens support portion 110. Therefore, the swing angle is finely adjusted. Can be adjusted.

  In the above description, the holding device 40 has been described as having the configuration shown in FIG. 3, but it may have a bilaterally symmetric configuration. In this case, the operation knob 82 is on the right side surface, and the worm 102 or The worm wheel 106 is arranged on the left side. In this case, the right side is the one side in the left-right direction.

  Further, the swing support portion 90 is supported by the left / right slide support portion 70 so as to be slidable in the left / right direction, and the left / right direction slide support portion 70 is supported by the front / rear direction slide support portion 50 so as to be slidable in the front / rear direction. The swing support 90 may be supported by the front / rear direction slide support 50 so as to be slidable in the front / rear direction, and the front / rear direction slide support 50 may be supported by the left / right direction slide support 70 so as to be slidable in the left / right direction.

  That is, as shown in the holding device 40 ′ shown in FIG. 9, the slide body 94 is inserted in the front-rear direction in order to insert the support shafts (first support shafts) 54 of the pair of front-rear direction slide support portions 50 ′ in the front-rear direction. A through hole 94a is formed.

  Further, the support shaft 54 is supported by projecting portions (52b, 52c) erected from the front and rear ends of the main body portion 52a of the support portion main body (third support portion main body) 52 in the front-rear direction slide support portion 50 ′. Has been. Further, a through hole 52 a-1 through which a pair of support shafts (second support shafts) 74 of the left and right slide support portion 70 ′ are inserted is formed in the main body portion 52 a of the support portion main body (third support portion main body) 52. Yes.

  Further, the support shaft 74 is a projecting portion (second projecting portion) erected from the left and right ends of the main body portion 72a of the support portion main body (fourth support portion main body) 72 in the left-right direction slide support portion 70 ′. (72b, 72c). Further, the support portion main body 72 of the left-right direction slide support portion 70 ′ is fixed to the base portion main body portion 44, and the through hole formed in the main body portion 72 a of the support portion main body (fourth support portion main body) 72 is omitted. Is done.

  The support body 52 of the longitudinal slide support 50 ′ is provided with an operation unit 58 as a first operation unit. The operation unit 58 includes a screw unit 60 as a first screw unit and an operation knob 62. In addition, as a first coil-like spring provided on the pair of support shafts 54 and attached to a position between the slide body 94 and the protruding portion 52c of the support portion main body 52 in the front and rear direction slide support portion 50 ′. The coiled spring 56 is provided.

  The support body 72 of the left / right slide support 70 ′ is provided with an operation portion 78 as a second operation portion. The operation portion 78 includes a screw portion 80 as a second screw portion and an operation knob 82. The left and right slide support portions 70 ′ are provided on a pair of support shafts 74, and attached to a position between the main body portion 52 a of the support portion main body 52 and the protrusion 72 c of the support portion main body 72. A coil spring 76 as a two coil spring is provided.

  Since the configuration other than the above is the same as that of the first embodiment, and the usage state of the measuring apparatus 5 including the holding device 40 ′ of the second embodiment is the same as that of the first embodiment, detailed description thereof is omitted.

  Since the holding device 40 ′ is configured as described above, by rotating the operation knob 82 of the left-right direction slide support portion 70 ′, the front-rear direction slide support portion 50 ′ and the swing support portion 90 are moved in the left-right direction ( That is, when the operation knob 82 is rotated to the right in the left side view, the front / rear direction slide support portion 50 ′ and the swing support portion 90 slide to the right side and rotate to the left. And the forward / backward slide support portion 50 ′ and the swing support portion 90 slide to the left side), and by rotating the operation knob 62 of the front / rear direction slide support portion 50 ′, the swing support portion 90 is moved back and forth (that is, Slid in the horizontal direction (that is, when the operation knob 62 is rotated to the right in the front view, the swing support portion 90 slides to the back side). When the counterclockwise rotation is made, the swing support part 90 slides to the front side), and by rotating the operation knob 104 of the swing support part 90, the contact lens support part 110 swings around the rotation axis in the left-right direction. . That is, when the operation knob 104 is rotated to the right in front view, the contact lens support unit 110 is rotated to the front side about the rotation axis in the left-right direction (the central axis of the shaft unit 107) and to the left side. As a result, the contact lens support portion 110 rotates to the back side about the rotation axis in the left-right direction (the center axis of the shaft portion 107) on the front side.

  According to the measuring apparatus of the present embodiment, in particular, the holding device 40 ′, a contact lens for correcting vision that has a plurality of discontinuous spherical surfaces having different radii of curvature formed from the inner side (center side) to the outer side. When measuring the radius of curvature, the contact lens can be slid in the front-rear direction and the left-right direction, and can be swung around the center axis in the left-right direction, so the optical axis of the objective lens and the optical axis of each spherical surface are They can be easily matched and the radius of curvature of each spherical surface can be easily measured.

  Further, in the left-right direction slide support portion 70 ′, the screw portion 80 is rotated by rotating the operation knob 82 of the support portion main body 72 biased by the coiled spring 76, so that the front-rear direction support portion 50 ′ is rotated. The position in the left-right direction can be adjusted, and in the front-rear direction slide support portion 50 ′, the screw portion 60 is turned by rotating the operation knob 62 on the support portion main body 52 biased by the coiled spring 56. Since the position of the swing support part 90 in the front-rear direction can be adjusted by rotating, it can be finely adjusted in the front-rear direction and the left-right direction. Further, in the swing support portion 90, by rotating the operation knob 104, the worm gear composed of the worm 102 and the worm wheel 106 is rotated to swing the contact lens support portion 110. Therefore, the swing angle is finely adjusted. Can be adjusted.

  In the above description, the holding device 40 ′ has been described as having the configuration shown in FIG. 9, but it may have a bilaterally symmetric configuration. In this case, the operation knob 82 is on the right side surface and the worm 102. The worm wheel 106 is disposed on the left side. In this case, the right side is the one side in the left-right direction.

DESCRIPTION OF SYMBOLS 5 Measuring apparatus 7 Apparatus main body 10 Housing | casing part 22 Coarse movement knob 24 Fine movement knob 26 Cylindrical body 28 Holding device support part 30 Display part 40, 40 'Contact lens holding device 42 Base part 44 Base part main body part 46 Mounting member 50, 50 'Front-rear direction slide support 52, 72, 92, 112 Support body 52a, 72a Body 52b, 52c, 72b, 72c Projection 54, 74 Support shaft 58, 78 Operation 60, 80 Screw 62, 82 , 104 Operation knobs 70, 70 ′ Left and right direction slide support portion 90 Swing support portion 94 Slide body 96 Horizontal plate portion 98 Vertical plate portion 100 Warm support portion 102 Worm 106 Warm wheel 107 Shaft portion 110 Contact lens support portion 114 Installation plate portion 114a, 119 recess 118 contact lens installation tool 118a 118b Installation tool body

Claims (7)

A contact lens holding device used in a measuring device for measuring a radius of curvature of a contact lens,
A contact lens support part (110) having an installation part (119) for installing a contact lens;
A swing support portion (90) that supports the contact lens support portion so as to be swingable about a rotation axis in the left-right direction that is one direction in the horizontal direction;
A left-right direction slide support portion (70) that supports the swing support portion so as to be slidable in the left-right direction;
A front-rear direction slide support part (50) for slidably supporting the left-right direction slide support part in the front-rear direction, which is a direction perpendicular to the left-right direction in the horizontal direction;
A base portion (42) having a mounting portion (46) for mounting on a holding device support portion provided so as to be able to move up and down in the measuring device;
A contact lens holding device comprising: The contact lens support part (110) includes a contact lens installation tool (118) and a first support part body (112), and the contact lens installation tool (118) includes a plate-like base part (118a), An installation tool main body part standing from a base part, and having an installation tool main body part (118b) provided with the concave installation part (119) on the upper surface thereof, the first support part main body (112) is a contact A mounting surface (114a) for mounting the lens mounting tool, and supported by a shaft portion (107) coaxial with the worm wheel of the swing support portion;
The oscillating support portion (90) is provided with a worm (102) that is rotatable about a rotation axis in the front-rear direction, a first operation knob (104) that rotates the worm, and a worm that rotatably supports the worm. A support portion (100), a worm wheel (106) that meshes with the worm and is rotatable about a rotation axis in the left-right direction, and is fixed to the worm wheel coaxially with the worm wheel. A shaft portion (107) to be supported, and a second support portion main body (in which the shaft portion is rotatably supported, the worm support portion is fixedly supported, and a pair of through holes (94a) are provided in the left-right direction ( 92), and
The left-right direction slide support part (70) supports the 1st support shaft (74) inserted in the through-hole provided in the 2nd support part main body, and the edge part of the both sides of a 1st support shaft, and it is the front-back direction. A pair of through holes (72a-1) are provided, and screwed into the third support part body (72) provided with a screw hole on one side in the left-right direction, and the screw holes of the third support part body, A first screw portion (80) whose tip abuts against a surface on one side in the left-right direction of the second support portion main body, a second operation knob (82) for rotating the first screw portion, and a periphery of the first support shaft It is provided by being wound along the surface, provided between the third support part main body and the second support part main body, and biasing the second support part main body to one side in the left-right direction with respect to the third support part main body. A first coiled spring (76) that
The front-rear direction slide support part (50) supports the second support shaft (54) inserted through the through-hole provided in the third support part main body, and the end portions on both sides of the second support shaft. A fourth support part body (52) provided with a screw hole on one side and a screw hole of the fourth support part body, the tip of which is a surface on one side in the front-rear direction of the third support part body A second screw portion (60) that contacts the second screw portion, a third operation knob (62) that rotates the second screw portion, and a winding member that is wound around the circumferential surface of the second support shaft, A second coiled spring (56) provided between the third support part main bodies and biasing the third support part main body to one side in the front-rear direction with respect to the fourth support part main body. The contact lens holding device according to claim 1. The second support portion main body (92) is erected on the horizontal member (94, 96) provided with the pair of through holes (94a) and the upper surface of the horizontal member, and is in the vertical direction and in the front-rear direction. A vertical plate-like member (98) facing the vertical direction, and the vertical member rotatably supports the shaft portion, and the worm support portion is provided on one of the left and right sides of the vertical member. A first support body is provided on the opposite side of the surface on which the worm support is provided,
The third support body (72) has a substantially rectangular plate-like main body (72a) and a projecting portion (72b, 72c) projecting upward from the left and right ends of the main body. A pair of through holes (72a-1) provided in the front-rear direction are formed in the main body, and the pair of first support shafts (74) are supported by the pair of protrusions. And
The fourth support portion main body (52) includes a substantially rectangular plate-shaped main body portion (52a) and second projecting portions (52b, 52c) projecting upward from the front and rear end portions of the main body portion. The contact lens holding device according to claim 2, wherein the contact lens holding device has a substantially U-shaped plate shape, and the pair of second support shafts (54) are supported by the pair of second protrusions. A contact lens holding device used in a measuring device for measuring a radius of curvature of a contact lens,
A contact lens support part (110) having an installation part (119) for installing a contact lens;
A swing support portion (90) that supports the contact lens support portion so as to be swingable about a rotation axis in the left-right direction that is one direction in the horizontal direction;
A front-rear direction slide support part (50 ') that supports the swing support part so as to be slidable in the front-rear direction which is a direction perpendicular to the left-right direction in the horizontal direction;
A left-right direction slide support portion (70 ') for slidably supporting the front-rear direction slide support portion in the left-right direction;
A base portion (42) having a mounting portion for fixing to a holding device support portion provided to be movable up and down in the measuring device, and a base portion that fixes and supports the left-right direction slide support portion;
A contact lens holding device comprising: The contact lens support part (110) includes a contact lens installation tool (118) and a first support part body (112), and the contact lens installation tool (118) includes a plate-like base part (118a), An installation tool main body part standing from a base part, and having an installation tool main body part (118b) provided with the concave installation part (119) on the upper surface thereof, the first support part main body (112) is a contact A mounting surface (114a) for mounting the lens mounting tool, and supported by a shaft portion (107) coaxial with the worm wheel of the swing support portion;
The oscillating support portion (90) is provided with a worm (102) that is rotatable about a rotation axis in the front-rear direction, a first operation knob (104) that rotates the worm, and a worm that rotatably supports the worm. A support portion (100), a worm wheel (106) that meshes with the worm and is rotatable about a rotation axis in the left-right direction, and is fixed to the worm wheel coaxially with the worm wheel. A shaft portion (107) to be supported, and a second support portion main body (in which the shaft portion is rotatably supported, the worm support portion is fixedly supported, and a pair of through holes (94a) are provided in the front-rear direction ( 92), and
The front / rear direction slide support part (50 ′) supports the first support shaft (54) inserted through the through-hole provided in the second support part main body, and the ends on both sides of the first support shaft, and the horizontal direction A pair of through-holes (52a-1) are provided, and screwed into the third support part body (52) provided with a screw hole on one side in the front-rear direction and the screw hole of the third support part body, A first screw part (60) whose tip abuts against a surface on one side in the front-rear direction of the second support part main body, a first operation knob (62) for rotating the first screw part, and a first support shaft It is provided by winding along the peripheral surface, provided between the third support part main body and the second support part main body, and attached to the one side in the front-rear direction with respect to the third support part main body. A first coiled spring (56) for energizing,
The left-right direction slide support part (70 ') supports the 2nd support shaft (74) inserted in the through-hole provided in the 3rd support part main body, and the edge part of the both sides of a 2nd support shaft, and left-right direction A fourth support body (72) provided with a screw hole on one side thereof, and screwed into a screw hole of the fourth support body, the tip of which is on one side of the third support body in the left-right direction. A second screw portion (80) that contacts the surface, a second operation knob (82) that rotates the second screw portion, and a winding member that is wound around the peripheral surface of the second support shaft. And a second coil spring (76) for urging the third support body toward one side in the left-right direction with respect to the fourth support body. The contact lens holding device according to claim 4. The second support portion main body (92) is erected on the horizontal member (94, 96) provided with the pair of through holes (94a) and the upper surface of the horizontal member, and is in the vertical direction and in the front-rear direction. A vertical plate-like member (98) facing the vertical direction, and the vertical member rotatably supports the shaft portion, and the worm support portion is provided on one of the left and right sides of the vertical member. A first support body is provided on the opposite side of the surface on which the worm support is provided,
The third support body (52) has a substantially rectangular plate-like body (52a) and a substantially rectangular shape having protrusions (52b, 52c) protruding upward from the left and right ends of the body. The pair of through holes (52a-1) provided in the left-right direction are formed in the main body, and the pair of first support shafts (54) are supported by the pair of protrusions. And
The fourth support part main body (72) has a substantially rectangular plate-like main body part (72a) and second projecting parts (72b, 72c) protruding upward from both front and rear end parts of the main body part. 6. The contact lens holding device according to claim 5, wherein the contact lens holding device has a substantially U-shaped plate shape, and the pair of second support shafts (74) are supported by the pair of second protrusions. The horizontal member in the second support portion main body (92) has a substantially rectangular parallelepiped slide body (94) and a plate-like horizontal plate portion (96) fixed to the upper surface of the slide body. The contact lens holding device according to claim 3 or 6, wherein the pair of through holes (94a) are formed in the slide body, and the vertical member is fixed to the upper surface of the horizontal plate portion.

Images