Automatic opening and closing device for optical test

Abstract

The utility model belongs to the field of optical equipment, and particularly relates to an automatic opening and closing device for optical testing, the automatic opening and closing device comprises a shutter device provided with the automatic opening and closing device and a receiving lens, the automatic opening and closing device is arranged on a shutter base through a shutter support, the automatic opening and closing device is provided with a light through hole, and the receiving lens is arranged in the axis direction of the light through hole. The receiving lens is arranged on the lens base through the lens support, the automatic opening and closing device is provided with a shading blade, one end of the shading blade is rotationally connected with the mounting shell, the shading blade shields the light through hole when swinging, and the shading blade swings under the control of the transmission device. By arranging the swinging blades with the magnetic damping devices, swinging of the blades is achieved, so that slits for shading and light passing are automatically formed, and the sizes of the slits are adjusted.

Description

Technical Field

[0001] The present application belongs to the field of optical equipment, and specifically relates to an automatic opening and closing device for optical testing. Background Art

[0002] In optical measurement experiments, it is necessary to switch between light blocking and light passing operations. A stepper motor is required to drive the shading blade to swing. As the shutter speed increases, the shading blade has a narrow angle range in the open and closed state, and the deviation between the products will appear. Due to its inertia, it will produce different degrees of oscillation. It is unrealistic to adjust the brake timing of each shutter produced in large quantities, so the problem of oscillation at high speed has not been solved. Therefore, a light-passing slit generating device that can automatically open and close and reduce or eliminate blade oscillation is needed. Utility Model Content

[0003] The purpose of this application is to propose an automatic opening and closing device for optical testing, which solves the problem in the prior art of lacking an experimental device that can automatically open and close to block light and let light in and eliminate the oscillation of the shading blades during their swing.

[0004] The technical solution adopted in this application is:

[0005] An automatic opening and closing device for optical testing is provided with an outer shell that can be opened and closed, a shutter base and a lens base are provided in the outer shell, and the automatic opening and closing device is provided on the shutter base through a shutter bracket, the automatic opening and closing device is provided with a light-through hole, a receiving lens is provided in the axial direction of the light-through hole, the receiving lens is provided on the lens base through a lens bracket, the automatic opening and closing device is provided with a shading blade, one end of the shading blade is rotatably connected to the mounting shell, the shading blade blocks the light-through hole when swinging, and the shading blade swings under the control of a transmission device. The tooling platform should be provided with corresponding fixtures and holes for installing the outer shell, the lens base and the shutter base. The shutter bracket is provided with a shutter locking hole, and a fixing bolt is passed through the shutter locking hole and abuts against the side of the mounting shell.

[0006] Preferably, the automatic opening and closing device is provided with a mounting shell, and the mounting shell is a hollow disc structure. The mounting shell is provided with an annular mounting groove, and the partition chuck is fixedly clamped in the annular mounting groove. The shading blades include blade A, blade B and blade C of the same shape, and the blade A, blade B and blade C are evenly distributed along the circumference of the circular annular mounting groove and overlap in layers. The partition chuck is provided with a fixed blade pin, and the fixed blade pin is rotatably connected to blade A, blade B and blade C. The blade A is provided with a swinging groove, and the swinging groove abuts against the swinging blade pin. The swinging blade pin can slide along the inner edge of the swinging groove, and the swinging groove is provided with a magnetic damper, and the free end of the magnetic damper is detachably connected to the swinging blade pin.

[0007] Preferably, the transmission device includes a stepper motor, the stepper motor shaft is connected to the swing lever, the free end of the swing lever is engaged with the lever slot, the lever slot is firmly connected to the swing turntable, the swing turntable is rotatably nested in the annular mounting groove, the swing blade pin is firmly connected to the swing turntable, the partition chuck is provided with a swing through hole, the swing blade pin extends from one side of the swing turntable from the swing through hole to the side where the shading blade is installed, and the partition chuck mainly separates the shading blade from the swing turntable on the other side to avoid direct contact and wear.

[0008] Preferably, a light-blocking sheet is provided in the middle of the blade A, and the stepper motor is electrically connected to the control terminal through a wire. When the three light-blocking blades are swung to the middle position, the light-blocking sheet should be located at the center of the light hole, and the light-blocking sheet only needs to be installed on the blade A to block the central gap when the three light-blocking blades are in a closed state.

[0009] Preferably, the lens holder is provided with a lens mounting hole through which the receiving lens is clamped in the lens mounting hole. The lens holder is also provided with a longitudinal slit so that a mounting block with a certain deflection is divided at the upper end of the lens holder. The mounting block is provided with a transverse slit, which is connected to the lens mounting hole. The upper end of the mounting block is also provided with a bolt through hole, which is provided in the mounting blocks on both sides across the transverse slit, and the lens fastening bolts are provided in the bolt through holes. The lens model here can be: Znse-38.1-Z-15M-ET4.0, etc. or other lenses can be used as needed.

[0010] Preferably, a sliding buckle group is provided at the lower end of the shutter bracket, and the sliding buckle group includes a rectangular slide groove arranged on the shutter bracket, a threaded buckle is provided in the rectangular slide groove, and the threaded buckle is fastened to the shutter base, and a connecting adjustment threaded hole is provided on the joint surface of the shutter bracket and the shutter base, and the adjustment threaded hole is threadedly connected to the fine-tuning screw.

[0011] Preferably, the outer shell is provided with an outer shell mounting flange, and the outer shell mounting flange is fastened to the experimental tooling platform by bolts. The outer shell is a thin-walled shell with an upper opening, and the edge of the upper opening is rotatably connected to the top cover by a hinge.

[0012] The beneficial effects of this application are:

[0013] 1. The present application provides a swinging blade with a magnetic damping device to achieve the swinging of the blade, thereby automatically forming a slit for shading and letting light in, and adjusting the size of the slit.

[0014] 2. The partition chuck in the present application mainly separates the shading blade from the swinging turntable on the other side to avoid direct contact and wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of this application;

[0016] Figure 2 This is a schematic diagram of the housing structure of the device in this application;

[0017] Figure 3 A schematic diagram of the positions of the shielding shutter and lens in this application;

[0018] Figure 4 This is a schematic diagram of the external structure of this application;

[0019] Figure 5 This is a schematic diagram of the blade opening and closing structure in this application;

[0020] Figure 6 This is a schematic diagram of the opening and closing state of the blades in this application;

[0021] Figure 7 This is a schematic diagram of the structure of the blade shifting device in this application;

[0022] Figure 8 Schematic diagram of the oscillation damping structure in this application.

[0023] In the figure: 1. lens bracket; 2. shutter base; 3. shutter bracket; 4. shutter locking hole; 5. automatic opening and closing device; 501. mounting shell; 502. light shielding blade; 503. blade A; 504. blade B; 505. blade C; 506. fixed blade pin; 507. swing blade pin; 508. partition chuck; 509. fastening buckle; 510. light hole; 511. swing slide; 512. light shielding sheet; 513. swing through hole; 6. lens Head base; 7, outer shell; 701, outer shell mounting flange; 702, top cover; 8, receiving lens; 9, lens mounting hole; 10, horizontal gap; 11, lens fastening bolt; 12, longitudinal gap; 13, adjustment threaded hole; 14, fine-tuning screw; 15, sliding buckle group; 16, magnetic damper; 17, wire; 18, stepping motor; 19, swing lever; 20, swing turntable; 21, lever slot; 22, swing spring; 23, annular mounting groove. DETAILED DESCRIPTION

[0024] like Figure 1 and Figure 4-8 As shown, an automatic opening and closing device for optical testing is provided with an outer shell 7 that can be opened and closed, and a shutter base 2 and a lens base 6 are provided in the outer shell 7, including an automatic opening and closing device 5, the automatic opening and closing device 5 is arranged on the shutter base 2 through a shutter bracket 3, the automatic opening and closing device 5 is provided with a light hole 510, and a receiving lens 8 is arranged in the axial direction of the light hole 510, and the receiving lens 8 is arranged on the lens base 6 through a lens bracket 1, and the automatic opening and closing device 5 is provided with a light shielding blade 502, one end of the light shielding blade 502 is rotatably connected to the mounting shell 501, and the light shielding blade 502 blocks the light hole 510 when swinging, and the light shielding blade 502 swings under the control of the transmission device. The tooling platform should be provided with corresponding fixtures and holes for installing the outer shell 7, the lens base 6 and the shutter base 2. The shutter bracket 3 is provided with a shutter locking hole 4, and the fixing bolt is penetrated in the shutter locking hole 4 and abuts against the side of the mounting shell 501.

[0025] The automatic opening and closing device 5 is provided with a mounting shell 501, and the mounting shell 501 is a hollow disc structure. The mounting shell 501 is provided with an annular mounting groove 23, and the partition chuck 508 is fixedly clamped in the annular mounting groove 23. The shading blade 502 includes a blade A 503, a blade B 504 and a blade C 505 of the same shape. The blade A 503, the blade B 504 and the blade C 505 are evenly distributed along the circumference of the circular annular mounting groove 23 and overlap in layers. The partition chuck 508 is provided with a fixed blade pin 506, which is rotationally connected to blade A 503, blade B 504 and blade C 505. The blade A 503 is provided with a swinging groove 511, and the swinging groove 511 abuts against the swinging blade pin 507. The swinging blade pin 507 can slide along the inner edge of the swinging groove 511. The swinging groove 511 is provided with a magnetic damper 16, and the free end of the magnetic damper 16 is detachably connected to the swinging blade pin 507.

[0026] The transmission device includes a stepper motor 18, the shaft of the stepper motor 18 is connected to the swing lever 19, the free end of the swing lever 19 is engaged with the lever slot 21, the lever slot 21 is firmly connected to the swing turntable 20, the swing turntable 20 is rotatably nested in the annular mounting groove 23, the swing blade pin 507 is firmly connected to the swing turntable 20, the partition chuck 508 is provided with a swing through hole 513, the swing blade pin 507 extends from one side of the swing turntable 20 from the swing through hole 513 to the side where the shading blade 502 is installed, and the partition chuck 508 mainly separates the shading blade 502 from the swing turntable 20 on the other side to avoid direct contact and wear.

[0027] The implementation method is as follows: the controller drives the stepper motor 18 to drive the swing lever 19 to make the swing turntable 20 reciprocate. Under the drive of the swing blade pin 507 on the swing turntable 20 and the constraint of the fixed blade pin 506, the blade A 503 can only reciprocate along the fixed blade pin 506. Figure 6 The angle α in the figure is the swing amplitude angle of blade A 503 when opening and closing. Similarly, blade B 504 and blade C 505 are also installed and driven in the same way as blade A 503, so that the switching operation of blocking and passing light to the light hole 510 is realized through the cooperation of the three light-shielding blades 502.

[0028] Figure 5503A in the figure is the state when blade A 503 is open, that is, the light hole 510 is not blocked. When the light shielding blade 502 swings at a high speed, each time the swing blade pin 507 approaches the magnetic damper 16, the magnetic damper 16 will adhere to and adsorb the side surface of the swing blade pin 507 due to its magnetic properties. At this time, if the light shielding blade oscillates inertially, the damping device in the magnetic damper 16 will limit its movement amplitude, thereby reducing or eliminating the oscillation. Since the magnetic field decays quickly, the influence of magnetism on the swing blade pin 507 at a long distance (relative to almost close) can be ignored.

[0029] Preferably, in order to increase the convenience of installation, a fastening buckle 509 or a protrusion is provided on the installation housing 501, and correspondingly, a slot corresponding to the fastening buckle 509 is evenly provided on the edge of the partition chuck 508. And in order to increase the efficiency of the reciprocating swing of the stepping motor 18, the swing lever 19 is connected to the installation housing 501 through the swing spring 22.

[0030] like Figure 6 As shown, a light blocking sheet 512 is provided in the middle of the blade A 503, and the stepper motor 18 is electrically connected to the control terminal through the wire 17. When the three light-shielding blades 502 are swung to the middle position, the light blocking sheet 512 should be exactly at the center position of the light-through hole 510, and the light blocking sheet 512 only needs to be installed on the blade A 503 to achieve blocking of the central gap when the three light-shielding blades 502 are in a closed state.

[0031] like Figure 1 and Figure 3 As shown, the lens holder 1 is provided with a lens mounting hole 9, and the receiving lens 8 is clamped in the lens mounting hole 9. The lens holder 1 is also provided with a longitudinal slit 12 to divide the upper end of the lens holder 1 into a mounting block with a certain deflection. The mounting block is provided with a transverse slit 10, and the transverse slit 10 is connected to the lens mounting hole 9. The upper end of the mounting block is also provided with a bolt through hole, and the bolt through hole is provided in the mounting blocks on both sides across the transverse slit 10. The bolt through hole is provided with a lens fastening bolt 11. Due to the existence of the longitudinal slit 12, the mounting block has a certain deflection, and has a certain fault tolerance for different lenses when installing the lens. The lens model here can be Znse-38.1-Z-15M-ET4.0, etc., or other lenses can be used as needed.

[0032] The implementation method is as follows: when the lens needs to be clamped, the lens fastening bolt 11 is screwed in. Due to the existence of the transverse gap 10, the lens mounting hole 9 has a certain elasticity. When the lens fastening bolt 11 is screwed in to tighten the transverse gap 10, the lens mounting hole 9 contracts to complete the installation of the lens; when the lens needs to be replaced, the lens fastening bolt 11 is screwed out to loosen the transverse gap 10, thereby allowing the lens mounting hole 9 to complete the removal of the lens.

[0033] like Figure 1 and 3 As shown, a sliding buckle group 15 is provided at the lower end of the shutter bracket 3, and the sliding buckle group 15 includes a rectangular slide groove arranged on the shutter bracket 3, and a threaded buckle is arranged in the rectangular slide groove. The threaded buckle is fastened to the shutter base 2, and a connecting adjustment threaded hole 13 is provided on the joint surface of the shutter bracket 3 and the shutter base 2, and the adjustment threaded hole 13 is threadedly connected to the fine-tuning screw 14.

[0034] The implementation method is as follows: when the center of the gap formed by the shutter's shading blade 502 in the closed state deviates from the center of the lens, the fine-tuning screw 14 is rotated, and the shutter bracket 3 will move along the rectangular slide groove driven by the screw pair until it is observed in the receiving lens 8 that the center of the gap formed by the shading blade 502 in the closed state coincides with the center of the lens.

[0035] like Figure 2 As shown, the outer shell 7 is provided with an outer shell mounting flange 701, and the outer shell mounting flange 701 is fastened to the experimental tooling platform by bolts. The outer shell 7 is a thin-walled shell with an upper opening, and the edge of the upper opening is rotatably connected to the top cover 702 by a hinge. The outer shell mounting flange 701 is installed by docking with the positioning hole of the experimental tooling platform by bolts, and the top cover 702 is opened for operation when the device needs to be used or the lens needs to be replaced.

Claims

1. An automatic opening and closing device for optical testing, comprising an openable and closable outer shell (7), wherein a shutter base (2) and a lens base (6) are arranged inside the outer shell (7), characterized in that: The invention comprises an automatic opening and closing device (5), wherein the automatic opening and closing device (5) is arranged on a shutter base (2) via a shutter bracket (3), the automatic opening and closing device (5) is provided with a light-through hole (510), a receiving lens (8) is arranged in the axial direction of the light-through hole (510), the receiving lens (8) is arranged on a lens base (6) via a lens bracket (1), the automatic opening and closing device (5) is provided with a light-shielding blade (502), one end of the light-shielding blade (502) is rotatably connected to a mounting shell (501), the light-shielding blade (502) blocks the light-through hole (510) when it swings, and the light-shielding blade (502) swings under the control of a transmission device.

2. The automatic opening and closing device for optical testing according to claim 1, characterized in that: The automatic opening and closing device (5) is provided with a mounting shell (501), the mounting shell (501) is a hollow disc structure, the mounting shell (501) is provided with an annular mounting groove (23), a partition chuck (508) is fixedly clamped in the annular mounting groove (23), the shading blade (502) comprises a blade A (503), a blade B (504) and a blade C (505) of the same shape, the blade A (503), the blade B (504) and the blade C (505) are evenly distributed along the circumference of the circular annular mounting groove (23) and overlap in layers, the partition chuck (508) A fixed blade pin (506) is arranged on the upper portion, and the fixed blade pin (506) is rotationally connected to blade A (503), blade B (504) and blade C (505); the blade A (503) is provided with a swinging groove (511), and the swinging groove (511) abuts against the swinging blade pin (507); the swinging blade pin (507) can slide along the inner edge of the swinging groove (511); the swinging groove (511) is provided with a magnetic damper (16), and the free end of the magnetic damper (16) is detachably connected to the swinging blade pin (507).

3. The automatic opening and closing device for optical testing according to claim 2, characterized in that: The transmission device comprises a stepper motor (18), the shaft of the stepper motor (18) is connected to a swing lever (19), the free end of the swing lever (19) is connected to a lever slot (21), the lever slot (21) is fixedly connected to a swing turntable (20), the swing turntable (20) is rotatably nested in an annular mounting groove (23), the swing blade pin (507) is fixedly connected to the swing turntable (20), the partition chuck (508) is provided with a swing through hole (513), and the swing blade pin (507) extends from one side of the swing turntable (20) from the swing through hole (513) to a side where the shading blade (502) is installed.

4. The automatic opening and closing device for optical testing according to claim 3, characterized in that: A light blocking sheet (512) is provided in the middle of the blade A (503), and the stepping motor (18) is electrically connected to a control terminal via a wire (17).

5. The automatic opening and closing device for optical testing according to claim 1, characterized in that: The lens holder (1) is provided with a lens mounting hole (9) through which a receiving lens (8) is snapped into the lens mounting hole (9). The lens holder (1) is also provided with a longitudinal slit (12) so that a mounting block with a certain deflection is separated from the upper end of the lens holder (1). The mounting block is provided with a transverse slit (10) which is communicated with the lens mounting hole (9). The upper end of the mounting block is also provided with a bolt through hole which is provided through the mounting blocks on both sides across the transverse slit (10). Lens fastening bolts (11) are provided in the bolt through holes.

6. The automatic opening and closing device for optical testing according to claim 1, characterized in that: The shutter bracket (3) is provided with a shutter locking hole (4), and a fixing bolt is passed through the shutter locking hole (4) and abuts against the side of the mounting housing (501).

7. The automatic opening and closing device for optical testing according to claim 1, characterized in that: The shutter bracket (3) is provided with a sliding buckle group (15) at the lower end thereof. The sliding buckle group (15) comprises a rectangular slide groove provided on the shutter bracket (3). A threaded buckle is provided in the rectangular slide groove. The threaded buckle is fastened to the shutter base (2). A communicating adjusting threaded hole (13) is provided on the joint surface between the shutter bracket (3) and the shutter base (2). The adjusting threaded hole (13) is threadedly connected to a fine-tuning screw (14).

8. The automatic opening and closing device for optical testing according to claim 1, characterized in that: The outer shell (7) is provided with an outer shell mounting flange (701), and the outer shell mounting flange (701) is fastened to the experimental tooling platform by bolts. The outer shell (7) is a thin-walled shell with an upper opening, and the edge of the upper opening is rotatably connected to the top cover (702) by a hinge.

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