CN211234920U

CN211234920U - Convex lens back focal length detection device

Info

Publication number: CN211234920U
Application number: CN202020058069.0U
Authority: CN
Inventors: 顾明方; 何谊红; 顾景阳; 何予宏
Original assignee: Nanyang Liyuan Optics Co ltd
Current assignee: Nanyang Liyuan Optics Co ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-08-11
Anticipated expiration: 2030-01-13

Abstract

The utility model discloses a convex lens back focal length detection device relates to focus detection technical field, specifically is a convex lens back focal length detection device, including observing the base, the top fixedly connected with light source seal box of observation base, the top welding of light source seal box has the laser mount table, it has laser emitter to peg graft above the laser mount table, the upper surface of observing the base is equipped with the spout, spout top sliding connection has the centre gripping tool, it has the rotary rod to peg graft in one side of observing the base, the one end fixedly connected with knob of rotary rod, observe the inside lift observation platform that is equipped with of base. This convex lens back focal length detection device, through the setting in use of centre gripping tool can fix not unidimensional lens in central point and put, sets up lift platform lift process through the cooperation of lift observation platform and lift control mechanism and can keep the force balance more stable, and it is more accurate to survey the data that reachs.

Description

Convex lens back focal length detection device

Technical Field

The utility model relates to a focus detects technical field, specifically is a convex lens back focal length detection device.

Background

As a commonly used optical collimating element, a convex lens is widely used in the fields of collimation, shaping and the like of light sources such as laser light sources and LED light sources. When the light source collimation and shaping system is commercialized, a lens system and a matched mechanical structure are designed for different light sources. After the mechanical structure is shaped, the focal length of the lens must be strictly controlled according to design parameters. In actual production, many injection-molded convex lenses have a deviation in size after molding, resulting in a difference in focal length of the convex lens. This requires inspection personnel to check for the focal length of the purchased lenticular lens. Usually, the detection of the focal length of the convex lens requires building and debugging a light path, so that the technical requirements on inspectors are high, and the detection efficiency is very low.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a convex lens back focal length detection device has solved the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a convex lens back focal length detection device comprises an observation base, a light source seal box is fixedly connected above the observation base, the top of the light source seal box is welded with a laser mounting table, a laser emitter is inserted above the laser mounting table, an observation window is fixedly arranged on the front surface of the observation base, a precise graduated scale is fixedly connected with one side of the observation base, the upper surface of the observation base is provided with a chute, a clamping jig is connected above the chute in a sliding way, one side of the observation base is inserted with a rotating rod, one end of the rotating rod is fixedly connected with a rotating button, the other end of the rotating rod is engaged with a lifting control mechanism, a lifting observation platform is arranged in the observation base, the two sides of the lifting observation platform are in threaded connection with the lifting control mechanism through threaded sleeves, and one side of the lifting observation platform is fixedly connected with a vernier pointer.

Optionally, the lifting control mechanism includes the main dwang, the one end and the rotary rod meshing of main dwang, the other end meshing of main dwang has the transfer line, the other end meshing of transfer line has the driven lever.

Optionally, the outer surfaces of the main rotating rod and the driven rod are provided with threads, and the main rotating rod and the driven rod are respectively in threaded connection with threaded sleeves on two sides of the lifting observation platform.

Optionally, when the lifting observation platform is at the highest point, the cursor pointer points to the origin of the precision scale.

Optionally, the laser emitted by the laser emitter is green light, and the wavelength of the light wave is 550 nm.

Optionally, the centre gripping tool includes the centre gripping base, the upper surface of centre gripping base is equipped with the centre gripping groove, the upper surface in centre gripping groove is equipped with the sliding tray, sliding connection has the grip block in the sliding tray, grip block lower surface threaded connection has a slewing gear, slewing gear passes through slew bearing fixed mounting in the inside of centre gripping base, one side meshing of slewing gear has drive gear, one side fixedly connected with dwang of drive gear, the other end fixedly connected with carousel of dwang.

(III) advantageous effects

The utility model provides a convex lens back focal length detection device possesses following beneficial effect:

1. this convex lens back focal length detection device through the setting of centre gripping tool, makes this lens back focal length detection device possess the effect that can adjust the centre gripping size, when detecting not unidimensional lens, can carry out the centre gripping to not unidimensional lens through the position of adjustment grip block, and the use is convenient high-efficient more.

2. This convex lens back focal length detection device, through the cooperation setting of light source seal box, observation window and observation base, can make laser source be in a relatively sealed environment at the in-process that uses to play the effect of being convenient for to survey, reached the purpose of being convenient for more look for the focus, through the cooperation setting of lift observation platform and lift control mechanism, make the lift observation platform more steady difficult emergence slope in the lift in-process, make the observation result more accurate.

Drawings

FIG. 1 is a schematic sectional view of the front side of the structure of the present invention;

FIG. 2 is a front schematic view of the present invention;

fig. 3 is a schematic structural view of the clamping jig of the present invention viewed from above;

fig. 4 is a schematic structural view of a front section of the clamping jig of the present invention;

fig. 5 is a schematic structural view of the plane overlooking of the clamping fixture a-a of the present invention.

In the figure: 1. an observation base; 2. a light source sealing box; 3. a laser mounting table; 4. a laser transmitter; 5. an observation window; 6. a chute; 7. clamping the jig; 701. a clamping base; 702. a clamping groove; 703. a sliding groove; 704. a clamping block; 705. a rotating gear; 706. a transmission gear; 707. rotating the rod; 708. a turntable; 8. rotating the rod; 9. a rotation knob; 10. a lift control mechanism; 1001. a main rotating rod; 1002. a transmission rod; 1003. a driven lever; 11. lifting the observation platform; 12. a cursor pointer; 13. a precision scale; 14. and (4) a threaded sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 5, the present invention provides a technical solution: a convex lens back focal length detection device comprises an observation base 1, a light source seal box 2 is fixedly connected above the observation base 1, a laser installation platform 3 is welded at the top of the light source seal box 2, a laser emitter 4 is inserted above the laser installation platform 3, laser emitted by the laser emitter 4 is green light, the wavelength of the laser light is 550nm, the convex lens back focal length detection device can enable the laser light source to be in a relatively sealed environment in the use process through the matching arrangement of the light source seal box 2, an observation window 5 and the observation base 1, so that the convex lens back focal length detection device has the function of being convenient for observation, the purpose of being more convenient for finding a focus is achieved, the observation window 5 is fixedly installed on the front side of the observation base 1, a precise scale 13 is fixedly connected to one side of the observation base 1, a chute 6 is arranged on the upper surface of the observation base 1, and a clamping jig 7 is slidably connected above, the clamping fixture 7 comprises a clamping base 701, a clamping groove 702 is arranged on the upper surface of the clamping base 701, a sliding groove 703 is arranged on the upper surface of the clamping groove 702, a clamping block 704 is connected in the sliding groove 703 in a sliding manner, a rotating gear 705 is connected to the lower surface of the clamping block 704 in a threaded manner, the rotating gear 705 is fixedly arranged inside the clamping base 701 through a rotating bearing, a transmission gear 706 is meshed with one side of the rotating gear 705, a rotating rod 707 is fixedly connected to one side of the transmission gear 706, a rotating disc 708 is fixedly connected to the other end of the rotating rod 707, the convex lens back focal length detection device has the effect of adjusting the clamping size through the arrangement of the clamping fixture 7, when lenses with different sizes are detected, lenses with different sizes can be clamped through adjusting the position of the clamping block 704, the use process is more convenient and efficient, a rotating rod 8 is inserted into one side of the, one end of the rotating rod 8 is fixedly connected with a rotating button 9, the other end of the rotating rod 8 is meshed with a lifting control mechanism 10, the lifting control mechanism 10 comprises a main rotating rod 1001, one end of the main rotating rod 1001 is meshed with the rotating rod 8, the other end of the main rotating rod 1001 is meshed with a driving rod 1002, the other end of the driving rod 1002 is meshed with a driven rod 1003, a lifting observation platform 11 is arranged inside the observation base 1, two sides of the lifting observation platform 11 are in threaded connection with the lifting control mechanism 10 through threaded sleeves 14, the outer surfaces of the main rotating rod 1001 and the driven rod 1003 are provided with threads, the main rotating rod 1001 and the driven rod are respectively in threaded connection with the threaded sleeves 14 on two sides of the lifting observation platform 11, the lifting observation platform 11 is enabled to be more stable and not prone to incline in the lifting process through the matching of the lifting observation platform 11 and the lifting control mechanism, when the lifting observation platform 11 is at the highest point, the cursor pointer 12 points to the origin of the precision graduated scale 13.

When the device is used, the clamping fixture 7 is pulled out of the sliding groove 6, the lens is placed in the clamping groove 702, the rotating disc 708 is rotated, the rotating disc 708 drives the rotating rod 707, the rotating rod 707 drives the transmission gear 706 to rotate, the transmission gear 706 rotates to drive the rotating gear 705 to rotate, the upper surface of the rotating gear 705 is provided with threads, the lower surface of the clamping block 704 is provided with threads, the threads of the clamping block and the rotating gear 705 are meshed with each other, the rotating gear 705 rotates to drive the clamping block 704 to move in the sliding groove 703, so that the lens is limited at the central position of the clamping groove 702, the central position of the clamping fixture 7 is a through hole, the clamping fixture 7 is pushed back to the observation base 1, the laser emitters 4 are started, the number of the laser emitters 4 is three, the laser emitters are uniformly distributed on the laser mounting table 3 in a circular shape with the radius of 20mm, three beams of parallel, the observation is more convenient, and the harm that green glow caused to people's eye is minimum, three bundles of parallel light can assemble in the focus after the lens, rotate knob 9, knob 9 drives rotary rod 8 and rotates, rotary rod 8 drives main dwang 1001 and rotates, main dwang 1001 drives transfer line 1002 and rotates, transfer line 1002 rotates and drives the follower pole 1003 and rotates, main dwang 1001 and follower pole 1003 rotate simultaneously and drive lift observation platform 11 through rotating the cover and steadily go up and down, lift observation platform 11 goes up and down to drive vernier pointer 12 and go up and down synchronously, observe three bundles of light states through observation window 5, index of vernier pointer 12 on precision scale 13 is the focus of lens this moment when three bundles of light assemble into a little on lift observation platform 11.

The utility model discloses a theory of operation and beneficial effect: this convex lens back focal length detection device, setting through centre gripping tool 7, make this lens back focal length detection device possess the effect that can adjust the centre gripping size, when detecting different size lens, position through adjustment grip block 704 can carry out the centre gripping to different size lens, the use is convenient more high-efficient, this convex lens back focal length detection device, through light source seal box 2, observation window 5 and observation base 1's cooperation setting, in-process using can make laser source be in a relatively sealed environment, thereby the effect of being convenient for observe has been played, the purpose of the focus of being convenient for more is sought, cooperation setting through lift observation platform 11 and lift control mechanism 10, make lift observation platform 11 more steadily difficult emergence slope in the lift process, make the observation result more accurate.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a convex lens back focal length detection device, includes observation base (1), its characterized in that: the device comprises an observation base (1), a light source seal box (2) fixedly connected to the top of the observation base (1), a laser installation table (3) welded to the top of the light source seal box (2), a laser emitter (4) inserted to the top of the laser installation table (3), an observation window (5) fixedly installed on the front of the observation base (1), a precise graduated scale (13) fixedly connected to one side of the observation base (1), a sliding groove (6) arranged on the upper surface of the observation base (1), a clamping jig (7) slidably connected to the upper side of the sliding groove (6), a rotary rod (8) inserted to one side of the observation base (1), a rotary button (9) fixedly connected to one end of the rotary rod (8), a lifting control mechanism (10) engaged to the other end of the rotary rod (8), and a lifting observation table (11) arranged inside the observation base (1), the two sides of the lifting observation platform (11) are in threaded connection with the lifting control mechanism (10) through threaded sleeves (14), and one side of the lifting observation platform (11) is fixedly connected with a vernier pointer (12).

2. The convex lens back focal length detecting device according to claim 1, wherein: lifting control mechanism (10) are including master rotating rod (1001), the one end and the meshing of rotary rod (8) of master rotating rod (1001), the other end meshing of master rotating rod (1001) has transfer line (1002), the other end meshing of transfer line (1002) has driven lever (1003).

3. The convex lens back focal length detecting device according to claim 2, wherein: the outer surfaces of the main rotating rod (1001) and the driven rod (1003) are provided with threads, and the main rotating rod and the driven rod are respectively in threaded connection with threaded sleeves on two sides of the lifting observation platform (11).

4. The convex lens back focal length detecting device according to claim 1, wherein: when the lifting observation platform (11) is at the highest point, the cursor pointer (12) points to the origin of the precision graduated scale (13).

5. The convex lens back focal length detecting device according to claim 1, wherein: the laser emitted by the laser emitter (4) is green light, and the wavelength of the light wave is 550 nm.

6. The convex lens back focal length detecting device according to claim 1, wherein: centre gripping tool (7) are including centre gripping base (701), the upper surface of centre gripping base (701) is equipped with centre gripping groove (702), the upper surface of centre gripping groove (702) is equipped with sliding tray (703), sliding tray (703) sliding connection has grip block (704), grip block (704) lower surface threaded connection has turning gear (705), turning gear (705) are through rolling bearing fixed mounting in the inside of centre gripping base (701), one side meshing of turning gear (705) has drive gear (706), one side fixedly connected with dwang (707) of drive gear (706), other end fixedly connected with carousel (708) of dwang (707).