Background
The surface of the existing transparent optical element has more or less surface defects, the surface defects are an important evaluation index of the surface quality of the optical element, light beams incident to the surface of the optical element can be scattered and energy loss can be caused, if the size of the defects is small, a more serious diffraction phenomenon can be generated, phenomena such as film layer damage, diffraction stripes, energy absorption, defect distortion and the like can be generated, and the service efficiency and the service life of the optical element are further influenced. Therefore, it is generally necessary to detect the optical element, and conventionally, the optical element with low precision is generally detected by the human eye, and the optical element with high precision, for example, a high-precision optical lens for a microscope is generally detected by a visual detection device, and the optical element needs to be fixed by a carrier at the time of detection.
At present, most of optical element carriers applied to visual inspection are customized according to different optical element sizes, a form of grooving on a plate is usually adopted, the carriers are limited in use scenes of the carriers, and the area of the carriers in an imaging field can be increased in a visual inspection imaging system, particularly in the imaging process of a transparent optical element, so that the final imaging effect and subsequent identification and judgment are interfered. And the number of the first and second electrodes,
1) the existing optical element carrier occupies a large space due to the structural design, and a light source system for illuminating the optical element cannot be arranged on the carrier and cannot be adapted to an annular low-angle light source system.
2) The existing optical element carrier has the defects of more impurities in the imaging visual field, low background purity, large occupied area of a clamping part and high occupied ratio in the imaging visual field, and increases the interference in a final image.
3) The existing optical element carrier cannot move in the Z-axis direction, cannot change the displacement of the optical element in the Z-axis direction well, and cannot enable the optical element to incline, so that the adjustable freedom degree of the optical element is low. For example, the conventional optical element carrier includes a support seat having a rectangular parallelepiped structure and two strip-shaped holders, the holder cross frame is mounted on the support seat, and the optical element is held or released by changing the distance between the two holders, so that the structure can only provide a certain adjustable space along the length direction of the holders, the adjustable freedom is low, and the holder of the cross frame occupies a large imaging area, thereby increasing the interference in the final image.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: aiming at the problem that the existing optical element carrier for visual inspection has low adjustable freedom degree, the optical element carrier for visual inspection is provided.
In order to solve the technical problem, an embodiment of the present invention provides an optical element carrier for visual inspection, including a lifting assembly and a clamping assembly, where the lifting assembly includes a lifting driving assembly and an installation table, and the lifting driving assembly is used for driving the installation table to lift;
the clamping assembly is arranged on the mounting table and used for clamping the optical element.
Optionally, the clamping assembly comprises a first driving assembly, a first clamping member and a second clamping member, the first driving assembly is used for driving the first clamping member and the second clamping member to approach each other to clamp the optical element or move away from each other to release the optical element.
Optionally, the first drive assembly comprises a screw base, a screw, a first screw nut and a second screw nut; the screw rod seat is arranged on the mounting table; the screw rod is rotatably arranged on the screw rod seat and is horizontally arranged; the screw rod is provided with a first thread and a second thread with opposite rotation directions; the first screw nut is in threaded connection with the first thread, and the second screw nut is in threaded connection with the second thread; the first clamping piece is fixedly arranged on the first screw rod nut, and the second clamping piece is fixedly arranged on the second screw rod nut; the first feed screw nut and the second feed screw nut can be close to or far away from each other when the feed screw is rotated.
Optionally, the clamping assembly is provided with two sets of the screw rods, and the two sets of the screw rods are vertically arranged.
Optionally, the first clamping member includes a first fixing portion and a first clamping portion, the first fixing portion is disposed on the first lead screw nut, and the first clamping portion is vertically disposed on the first fixing portion; the second clamping piece comprises a second fixing part and a second clamping part, the second fixing part is arranged on the second lead screw nut, and the second clamping part is vertically arranged on the second fixing part.
Optionally, the lifting driving assembly includes a first fixing seat, a first screw, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, a hinge portion is disposed at a lower side of the mounting table, a first end of the first connecting rod and a first end of the second connecting rod are both hinged to the hinge portion, a second end of the first connecting rod is hinged to a first end of the third connecting rod through a first hinge shaft, a second end of the second connecting rod is hinged to a first end of the fourth connecting rod through a second hinge shaft, and a second end of the third connecting rod and a second end of the fourth connecting rod are both hinged to the first fixing seat;
the first screw rod is provided with a third thread section and a fourth thread section which have opposite rotation directions, and the first screw rod penetrates through the first hinge shaft and the second hinge shaft; the first articulated shaft is in threaded connection with the third threaded section; the second articulated shaft is in threaded connection with the fourth threaded section; when the first screw rod is rotated, the first hinge shaft and the second hinge shaft can be close to each other so that the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod can lift the mounting table or be far away from each other so as to lower the mounting table.
Optionally, the optical element carrier further comprises a base plate and a tilt assembly disposed on the base plate;
the lifting assembly is arranged on the inclined assembly, and the inclined assembly is used for adjusting the inclination angles of the lifting assembly and the clamping assembly.
Optionally, the tilt assembly includes a second fixed seat, a tilt adjustment member, an adjustment screw, and two fixing screws; the second fixed seat is provided with a hinge groove; the inclination adjusting piece comprises an installation part and a connecting part arranged on one side of the installation part; a hinge convex part is arranged at the lower side of the mounting part; the hinge convex part is hinged in the hinge groove; the adjusting screw rod is vertically arranged and is in threaded connection with the connecting part, and the lower end of the adjusting screw rod is abutted against the second fixed seat; the two fixing screws are in threaded connection with the second fixing seat, one fixing screw is located on one side of the connecting part, the other fixing screw is located on the other side of the connecting part, and the two fixing screws face the connecting part;
the two fixing screws move in opposite directions and can fix the inclination adjusting piece when respectively abutting against the side wall of the connecting part; when the two fixing screws are far away from each other, the connecting part is loosened, and the adjusting screw is rotated, the inclination adjusting piece can rotate around the hinged convex part to change the inclination angle of the inclination adjusting piece;
the lifting assembly is arranged on the mounting part.
Optionally, a light absorption bracket is arranged on the mounting table, and the light absorption bracket is positioned below the optical element; the light absorption support is provided with a light absorption layer, and the light absorption layer at least covers the orthographic projection of the optical element on the light absorption support.
Optionally, the optical element carrier further includes a light source support seat, the light source support seat is disposed around the clamping assembly, and the light source support seat is used for installing a light source system for illuminating the optical element.
The embodiment of the utility model provides an optical element carrier for visual detection compares with prior art, through setting up lifting unit, can drive the centre gripping subassembly and go up and down to behind centre gripping subassembly centre gripping optical element, can realize the regulation of height under lifting unit's drive, increased the adjustable degree of freedom of optical element carrier, thereby adaptation visual detection device that can be better, and then improved detection effect.
Drawings
Fig. 1 is a schematic structural diagram of an optical element carrier according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an optical element carrier according to an embodiment of the present invention when a light source supporting seat is not installed;
fig. 3 is a schematic structural diagram of a clamping assembly according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a conventional optical element carrier holding an optical element;
fig. 5 is a schematic top view illustrating an optical element carrier according to an embodiment of the present invention clamping an optical element;
fig. 6 is a schematic structural diagram of a lifting assembly according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a tilting assembly according to an embodiment of the present invention;
fig. 8 is a schematic view of another perspective of the tilting assembly according to an embodiment of the present invention;
fig. 9 is an exploded view of a tilt assembly according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
1', a clamping piece;
1. a lifting assembly; 11. a lift drive assembly; 111. a first fixed seat; 112. a first screw; 1121. a second holding portion; 113. a first link; 114. a second link; 115. a third link; 116. a fourth link;
12. an installation table; 121. a hinge portion;
2. a clamping assembly; 21. a first drive assembly; 211. a screw base; 2111. a first vertical base; 2112. a second vertical base; 2113. a base; 212. a screw rod; 2121. a first thread; 2122. a second thread; 2123. a first holding portion; 213. a first lead screw nut; 214. a second feed screw nut;
22. a first clamping member; 221. a first fixed part; 222. a first clamping portion; 23. a second clamping member; 231. a second fixed part; 232. a second clamping portion;
3. a base plate;
4. a tilt assembly; 41. a second fixed seat; 411. a hinge slot; 42. a tilt adjustment member; 421. an installation part; 422. a connecting portion; 423. a hinge projection; 43. adjusting the screw rod; 44. fixing the screw rod;
5. a light absorbing support; 6. a light source supporting seat; 7. a guide rail assembly.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1-2, an optical element carrier for visual inspection provided by an embodiment of the present invention includes a lifting assembly 1 and a clamping assembly 2, the lifting assembly 1 includes a lifting driving assembly 11 and an installation table 12, the lifting driving assembly 11 is used for driving the installation table 12 to lift;
a clamping assembly 2 is arranged on the mounting table 12, the clamping assembly 2 being for clamping an optical element.
The embodiment of the utility model provides an optical element carrier for visual detection compares with prior art, through setting up lifting unit 1, can drive centre gripping subassembly 2 and go up and down to behind 2 centre gripping optical element of centre gripping subassembly, can realize the regulation of height under lifting unit 1's drive, increased the adjustable degree of freedom of optical element carrier, thereby adaptation visual detection device that can be better, and then improved detection effect.
In one embodiment, as shown in fig. 3, the clamping assembly 2 comprises a first driving assembly 21, a first clamping member 22 and a second clamping member 23, wherein the first driving assembly 21 is used for driving the first clamping member 22 and the second clamping member 23 to approach each other to clamp the optical element or move away from each other to release the optical element. When optical elements need to be clamped, the optical elements are placed between the first clamping piece 22 and the second clamping piece 23, the first driving assembly 21 drives the first clamping piece 22 and the second clamping piece 23 to be close to each other so that the optical elements can be clamped, and when the optical elements need to be taken away, the first driving assembly 21 only needs to drive the first clamping piece 22 and the second clamping piece 23 to be away from each other.
In one embodiment, as shown in fig. 3, the first driving assembly 21 includes a lead screw seat 211, a lead screw 212, a first lead screw nut 213 and a second lead screw nut 214; the screw base 211 is arranged on the mounting table 12; the screw rod 212 is rotatably arranged on the screw rod seat 211, and the screw rod 212 is horizontally arranged; the lead screw 212 has a first thread 2121 and a second thread 2122 with opposite rotation directions; the first lead screw nut 213 is screwed with the first thread 2121, and the second lead screw nut 214 is screwed with the second thread 2122; the first clamping piece 22 is fixedly arranged on the first lead screw nut 213, and the second clamping piece 23 is fixedly arranged on the second lead screw nut 214; the first lead screw nut 213 and the second lead screw nut 214 can be moved toward or away from each other when the lead screw 212 is rotated. By providing the first and second threads 2121 and 2122 with opposite rotation directions on the lead screw 212, and screwing the first lead screw nut 213 with the first thread 2121 and screwing the second lead screw nut 214 with the second thread 2122, when the lead screw 212 is rotated, the first and second lead screw nuts 213 and 214 can approach each other or move away from each other, so as to drive the first and second clamping members 22 and 23 to approach each other to clamp the optical element or move away from each other to loosen the optical element. Simple structure and convenient operation.
In one embodiment, as shown in fig. 3, in order to facilitate the rotation of the screw rod, a first grip 2123 may be provided at an end of the screw rod 212, and the first grip 2123 serves as a point of application of the external force. When the screw rod 212 needs to be rotated, the screw rod 212 can be rotated by holding the first holding part 2123 by hand and applying a rotating force.
Of course, this structure is the structure that is suitable for manual regulation, if want to realize automatic drive, can be connected with lead screw 212 through the motor, rotates through motor drive lead screw 212, the utility model discloses do not do the restriction to the driven form.
In one embodiment, as shown in fig. 3, the clamping assembly 2 is provided with two sets of screws 212 arranged vertically. By arranging the clamping assemblies 2 into two sets and arranging the two sets of screw rods 212 vertically, the side walls of different positions of the optical element can be clamped, so that the clamping assemblies 2 can clamp the optical element more stably. The clamping structure can clamp optical elements in various shapes such as round, square, rectangular, plane, slightly curved and the like.
In an embodiment, as shown in fig. 3, in order to make the first clamping member 22 and the second clamping member 23 move more stably, a guide rail assembly 7 may be disposed on the mounting table 12, in order to save space and increase the compactness of the structure, the guide rail assembly 7 includes a guide rail and two sliding blocks, the two sliding blocks are slidably disposed on the same guide rail, the first lead screw nut 213 is connected to one of the sliding blocks of the guide rail assembly 7, and the second lead screw nut 214 is connected to the other sliding block of the guide rail assembly 7.
Specifically, as shown in fig. 3, the rod seat 211 includes a first upright seat 2111, a second upright seat 2112, and a base 2113, the base 2113 being fixedly disposed on the mounting table 12, the first upright seat 2111 being fixedly disposed at one end of the base 2113, and the second upright seat 2112 being fixedly disposed at the other end of the base 2113. The guide rail of the guide rail assembly 7 is arranged on the base 2113, one end of the screw rod 212 is rotatably connected with the first vertical seat 2111, and the other end of the screw rod 212 is rotatably connected with the second vertical seat 2112.
In one embodiment, as shown in fig. 3, the first clamping member 22 includes a first fixing portion 221 and a first clamping portion 222, the first fixing portion 221 is disposed on the first lead screw nut 213, and the first clamping portion 222 is vertically disposed on the first fixing portion 221; the second clamping member 23 includes a second fixing portion 231 and a second clamping portion 232, the second fixing portion 231 is disposed on the second lead screw nut 214, and the second clamping portion 232 is vertically disposed on the second fixing portion 231. By vertically arranging the first clamping portion 222 and the second clamping portion 232, when the first clamping portion 222 and the second clamping portion 232 clamp the optical element, the area of the first clamping portion 222 and the second clamping portion 232 in the imaging field of view can be greatly reduced, and imaging interference is reduced. As shown in fig. 4 (the optical element in the figure is a circular structure), in the existing clamping structure, the clamping member 1 'is arranged horizontally, which increases the area of the clamping member 1' in the imaging field of view, and the first clamping portion 222 and the second clamping portion 232 of the present invention are arranged vertically, as shown in fig. 5 (the optical element in the figure is a circular structure), which can greatly reduce the area in the imaging field of view, thereby reducing the imaging interference.
In an embodiment, as shown in fig. 6, the lifting driving assembly 11 includes a first fixing seat 111, a first screw 112, a first link 113, a second link 114, a third link 115 and a fourth link 116, a hinge portion 121 is disposed at a lower side of the mounting table 12, a first end of the first link 113 and a first end of the second link 114 are both hinged on the hinge portion 121, a second end of the first link 113 and a first end of the third link 115 are hinged through a first hinge shaft (not labeled), a second end of the second link 114 and a first end of the fourth link 116 are hinged through a second hinge shaft (not labeled), and a second end of the third link 115 and a second end of the fourth link 116 are both hinged on the first fixing seat 111;
the first screw rod 112 has a third thread section (not marked) and a fourth thread section (not marked) with opposite rotation directions, and the first screw rod penetrates through the first hinging shaft and the second hinging shaft; the first hinge shaft is in threaded connection with the third threaded section; the second articulated shaft is in threaded connection with the fourth threaded section; due to the opposite rotation directions of the third thread section and the fourth thread section, when the first screw rod 112 is rotated, the first hinge shaft and the second hinge shaft can approach each other so that the first link 113, the second link 114, the third link 115 and the fourth link 116 are matched with each other to lift the installation table 12 or the first hinge shaft and the second hinge shaft can be away from each other so that the first link 113, the second link 114, the third link 115 and the fourth link 116 are matched with each other to lower the installation table 12.
In an embodiment, as shown in fig. 6, for convenience of adjustment, a second holding portion 1121 may be provided at an end portion of the first screw rod 112, and the second holding portion 1121 serves as a point of application of external force. When the first screw rod 112 needs to be rotated, the second grip 1121 is held by hand and a rotational force is applied to rotate the first screw rod 112.
Of course, this structure is the structure that is suitable for manual regulation, if want to realize automatic drive, can be connected with first screw rod 112 through the motor, rotates through first screw rod 112 of motor drive, the utility model discloses do not do the restriction to the driven form.
In one embodiment, as shown in fig. 2, the optical element carrier further comprises a base plate 3 and a tilting assembly 4, the tilting assembly 4 being disposed on the base plate 3; the lifting assembly 1 is arranged on the tilting assembly 4, and the tilting assembly 4 is used for adjusting the tilting angles of the lifting assembly 1 and the clamping assembly 2.
In one embodiment, as shown in fig. 7-9, the tilting assembly 4 comprises a second fixed seat 41, a tilting adjustment member 42, an adjustment screw 43 and two fixing screws 44; the second fixing seat 41 is provided with a hinge slot 411; the inclination adjusting member 42 includes a mounting portion 421 and a connecting portion 422 provided at one side of the mounting portion 421; a hinge protrusion 423 is provided at a lower side of the mounting portion 421; the hinge protrusion 423 is hinged in the hinge groove 411; the adjusting screw 43 is vertically arranged and is in threaded connection with the connecting part 422, and the lower end of the adjusting screw 43 is abutted against the second fixed seat 41; the two fixing screws 44 are both in threaded connection with the second fixing seat 41, one fixing screw 44 is located on one side of the connecting portion 422, the other fixing screw 44 is located on the other side of the connecting portion 422, and both the two fixing screws 44 face the connecting portion 422;
the two fixing screws 44 move towards each other and can fix the inclination adjusting piece 42 when respectively abutting against the side wall of the connecting part 422; when the two fixing screws 44 are separated from each other by the release connection portion 422 and the adjusting screw 43 is rotated, the tilt adjusting member 42 can be rotated about the hinge protrusion 423 to change the tilt angle of the tilt adjusting member 42;
the lifting assembly 1 is disposed on the mounting portion 421. Specifically, the first fixing seat 111 in the lifting assembly 1 is disposed on the mounting portion 421, and when the inclination angle of the mounting table 12 in the lifting assembly 1 needs to be adjusted, the adjustment can be realized by adjusting the inclination angle of the inclination adjusting member 42. The two fixing screws 44 are screwed to be away from each other without abutting against the connecting portion 422, at the moment, the adjusting screw 43 is rotated, because the adjusting screw 43 is in threaded connection with the connecting portion 422, the lower end of the adjusting screw 43 abuts against the second fixing seat 41, the hinge convex portion 423 of the mounting portion 421 is hinged in the hinge groove 411, under the mutual acting force among the screw threads, the connecting portion 422 drives the inclination adjusting piece 42 to swing around the hinge convex portion 423 so as to achieve the purpose of adjusting the inclination of the inclination adjusting piece 42, and after the preset angle is adjusted, the two fixing screws 44 are screwed to be close to each other to abut against the connecting portion 422, so that the effect of fixing the inclination adjusting piece 42 is achieved.
In one embodiment, as shown in fig. 1 and 2, the mounting table 12 is provided with a light absorbing bracket 5, the light absorbing bracket 5 is located below the optical element, and the light absorbing bracket 5 is provided with a light absorbing layer, and the light absorbing layer at least covers the orthographic projection of the optical element on the light absorbing bracket 5. Through setting up the light absorption layer, can improve the background purity in the formation of image field of vision, guarantee dark field imaging effect, the image contrast that obtains is higher. Wherein, the light absorption layer is made of light absorption materials, preferably, the light absorption layer can be arranged into a porous structure to enhance the light absorption effect.
In one embodiment, as shown in fig. 1, the optical device carrier further includes a light source support 6, the light source support 6 is disposed around the clamping assembly 2, and the light source support 6 is used for installing a light source system for illuminating the optical device. Can integrate light source system to through setting up light source supporting seat 6 the utility model discloses an on the optical element carrier, make and use the utility model discloses a visual detection device structure of optical element carrier is compacter.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.