CN212483953U - Optical lens capable of being adjusted in gear-fixing mode for vision system - Google Patents
Optical lens capable of being adjusted in gear-fixing mode for vision system Download PDFInfo
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- CN212483953U CN212483953U CN202020311264.XU CN202020311264U CN212483953U CN 212483953 U CN212483953 U CN 212483953U CN 202020311264 U CN202020311264 U CN 202020311264U CN 212483953 U CN212483953 U CN 212483953U
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Abstract
An optical lens adjustable in gear for a vision system, comprising: the optical lens comprises a common lens, a Fresnel lens, a mounting structure and a fixed gear adjusting device, wherein the mounting structure is used for mounting the common lens and the Fresnel lens, the Fresnel lens is positioned in front of the lens, the fixed gear adjusting device comprises a positioning turntable, a rolling bearing, adjusting cylinders and annular convex discs, the adjusting cylinders are sleeved through the rolling bearing, each adjusting cylinder is provided with the annular convex disc which is processed with matching threads, each annular convex disc corresponds to the trapezoidal annular groove in the positioning turntable, the positions of the annular convex discs are changed by rotating the adjusting cylinders so as to push the positioning turntable and further change the positions of the Fresnel lens so as to meet the requirements of a plurality of working distances, the optical lens has high centering precision, the whole optical lens has low cost, small volume and small weight, can be used for size calculation or high-precision measurement of high-height objects, and the imaging size of the objects is not influenced by the working distances, in addition, the gear can be quickly shifted.
Description
Technical Field
The utility model relates to an optical lens technical field for the visual inspection system specifically is an optical lens that visual system was adjusted with keeping off surely.
Background
The visual system (visual inspection system for short) uses industrial camera to replace human eyes to complete the functions of identification, measurement and positioning. The general visual detection system is composed of a camera, a lens and a light source in a combined mode, can replace manual work to finish detection of bar code characters, cracks, packages, completeness of surface layers, pits, positions, orientations and the like, can effectively improve detection speed and precision of a production line by using the visual detection system, greatly improves yield and quality, reduces labor cost, and meanwhile prevents misjudgment caused by eye fatigue. The optical lens is an important component of a vision inspection system, wherein the optical lens generally uses a common lens or a telecentric lens, wherein the common lens can receive parallel light and disordered non-parallel light which are parallel to an optical axis, a chief ray of the telecentric lens is parallel to the optical axis of the lens (no disordered inclined rays), and the telecentric lens is suitable for size calculation or high-precision measurement of a high object relative to the common lens, and the imaging size of the object is not influenced by a working distance. Although telecentric mirrors have the above advantages, there are also significant drawbacks with respect to ordinary lenses: high cost, heavy weight and large volume. Moreover, when the working distances are different, the distance of the fresnel lens needs to be adjusted, and particularly when the working distance of the user is only a few specific distances, it takes a lot of time to adjust the distance while observing the image at each time, and the stability of the imaging quality is affected due to the difference of the judgment standards of different operators.
The utility model provides an optical lens, but optical lens of centering debugging, gear setting quick adjustment of being convenient for on the basis of solving above-mentioned technical problem.
SUMMERY OF THE UTILITY MODEL
The utility model provides an optical lens that visual system was adjusted with keeping off surely, includes ordinary camera lens, fresnel lens, mounting structure, keeps off adjusting device surely, mounting structure is including the camera lens installation plate piece that is used for installing the camera lens, the lens mount pad, fixed plate, the spliced pole that are used for installing fresnel lens, the lens mount pad is provided with the through-hole structure, fresnel lens installs in the through-hole of lens mount pad, the lens mount pad is fixed in the central through-hole of fixed plate, it is connected with the fixed plate just through the spliced pole that the adjusting device that keeps off is used for quick adjustment fresnel lens's position, fresnel lens arranges in the place ahead of camera lens.
Preferably, the optical lens capable of being adjusted in a fixed gear mode for the vision system, the fixed gear adjusting device comprises a positioning turntable, a rolling bearing, an adjusting cylinder and an annular convex disc, the rolling bearing comprises a first rolling bearing, a second rolling bearing, a third rolling bearing, a. The second rolling bearing is sleeved on the outer side of the second adjusting cylinder, the third adjusting cylinder is sleeved on the outer ring of the second rolling bearing, and the like, the nth adjusting cylinder is installed and fixed in a central through hole of the fixed gear adjusting fixing plate through the nth rolling bearing, the first annular convex disc, the second annular convex disc, the third annular convex disc and the nth annular convex disc are respectively sleeved and fixed with the first adjusting cylinder, the second adjusting cylinder, the third adjusting cylinder, and the nth adjusting cylinder, the first adjusting cylinder, the second adjusting cylinder, the third adjusting cylinder and the nth adjusting cylinder are respectively provided with matching threads with the first annular convex disc, the second annular convex disc and the third annular convex disc, and the sizes of the first annular convex disc, the second annular convex disc, the third annular convex disc, the right angle and the nth annular convex disc are sequentially increased; one side of the positioning rotary disc, which is close to the Fresnel lens, is connected with the fixed plate through the connecting column, the lens mounting plate block and the fixed gear adjusting fixed plate are fixed on the unified supporting working plate surface, a return spring is arranged between the lens mounting plate block and the positioning rotary disc surface, and N is a natural number greater than 3.
Preferably, the optical lens that the vision system was adjusted with the gear setting, the threaded section length of first regulation section of thick bamboo, second regulation section of thick bamboo, third regulation section of thick bamboo, the nth regulation section of thick bamboo outside just equals the static position behind first annular flange, second annular flange, third annular flange, ·, the nth annular flange and the corresponding annular groove block respectively.
Preferably, the optical lens that visual system adjusted with can keeping off, the tip that first regulation section of thick bamboo, second regulation section of thick bamboo, third regulation section of thick bamboo, the Nth regulation section of thick bamboo is provided with the cross breach.
Preferably, the optical lens capable of being adjusted in a fixed gear mode for the vision system further comprises a servo motor, a connecting rod and a motor fixing plate, wherein the servo motor is fixed through the motor fixing plate, the motor fixing plate is fixed with the lens mounting plate through the connecting rod, a power output shaft of the servo motor is sleeved with a sleeve, a cross-shaped notch is machined in the end portion of the sleeve, the cross-shaped notch is used for detachably mounting cross-shaped clamping plates with different sizes, and the cross-shaped clamping plates are clamped in the cross-shaped notches in the end portions of the first adjusting cylinder, the second adjusting cylinder, the third adjusting cylinder and the Nth adjusting cylinder; the motor fixing plate, the lens mounting plate block and the fixed gear adjusting fixing plate are all fixed on the unified supporting working plate surface.
Preferably, the optical lens that the vision system was adjusted with can keeping off, the face of lens installation plate is provided with linear bearing, the spliced pole passes the inner circle of linear bearing and is fixed with the fixed plate.
Preferably, the optical lens for the vision system to adjust by gear shifting further comprises a light source (not shown in the figure), the light source comprises a first light source and/or a second light source, the first light source is disposed between the fresnel lens and the detected object, and the second light source is disposed in front of the detected object. Namely, the first light source, the Fresnel lens, the object to be measured and the second light source are arranged in sequence.
Preferably, the optical lens capable of being adjusted in a fixed gear mode is used for the vision system, and the first light source is one or more of an annular light source, a strip-shaped light source and a coaxial light source; the second light source is a backlight light source.
The optical lens comprises a common lens, a Fresnel lens, a mounting structure and a fixed gear adjusting device, wherein the mounting structure is used for mounting the common lens and the Fresnel lens, the Fresnel lens is positioned in front of the lens, the fixed gear adjusting device comprises a positioning turntable, a rolling bearing, adjusting cylinders and annular convex discs, the adjusting cylinders are sleeved through the rolling bearing, each adjusting cylinder is provided with the annular convex disc which is processed with matching threads, each annular convex disc corresponds to the trapezoidal annular groove in the positioning turntable, the positions of the annular convex discs are changed by rotating the adjusting cylinders so as to push the positioning turntable and further change the positions of the Fresnel lens so as to meet the requirements of a plurality of working distances, the optical lens has high centering precision, the whole optical lens has low cost, small volume and small weight, can be used for size calculation or high-precision measurement of high-height objects, and the imaging size of the objects is not influenced by the working distances, in addition, the gear can be quickly shifted.
Description of the drawings:
the embodiments are further described with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of an optical lens adjustable by a fixed gear of the vision system of the present invention (in which a motor fixing plate is detached from a connecting column);
FIG. 2 is an enlarged schematic view of the circle in FIG. 1;
fig. 3 and 4 are schematic structural views of an adjusting cylinder and an annular convex disc according to the present invention;
fig. 5 is a schematic structural view of a positioning turntable according to the present invention;
fig. 6 is a schematic sectional view of the structure of the adjusting cylinder and the annular convex disc according to the present invention;
the numbering corresponds to the structure as follows:
the lens 1, the Fresnel lens 2, the mounting structure 3, the lens mounting plate 31, the lens mounting base 32, the fixing plate 33, the connecting column 34, the fixed-gear adjusting device 4, the positioning rotary table 41, the annular groove 411, the first rolling bearing 42, the first adjusting cylinder 43, the second adjusting cylinder 44, the second rolling bearing 45, the third adjusting cylinder 46, the first annular convex disc 47, the second annular convex disc 48, the third annular convex disc 49, the fixed-gear adjusting fixing plate 410, the third rolling bearing 411,
the following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
Specific embodiment example 1:
the utility model provides an optical lens that visual system was adjusted with keeping off surely, includes ordinary camera lens 1, fresnel lens 2, mounting structure 3, keeps off adjusting device 4 surely, mounting structure 3 is including the camera lens installation plate 31 that is used for installing camera lens 1, the lens mount pad 32, fixed plate 33, the spliced pole 34 that are used for installing fresnel lens, lens mount pad 32 is provided with the through-hole structure, fresnel lens 2 is installed in the through-hole of lens mount pad 32, lens mount pad 32 is fixed in the central through-hole of fixed plate 33, keep off adjusting device 4 and be used for quick adjustment fresnel lens 2's position and be connected with fixed plate 33 through spliced pole 34, fresnel lens 2 arranges in the place ahead of camera lens 1.
The common lens with low cost, light weight and small size in the market is combined with the Fresnel lens, so that imaging light rays are parallel to light rays parallel to the optical axis of the lens 1 under the refraction action of the Fresnel lens, and the parallel light rays enter the lens 1 to form images, so that the effect same as that of the telecentric lens can be achieved, and the video detection cost is greatly saved. Wherein, the gear-fixing adjusting device 4 comprises a positioning rotary table 41, a rolling bearing, an adjusting cylinder and an annular convex disc, the rolling bearing comprises a first rolling bearing 42, a second rolling bearing 45 and a third rolling bearing 411, the adjusting cylinder comprises a first adjusting cylinder 43, a second adjusting cylinder 44 and a third adjusting cylinder 46, the annular convex disc comprises a first annular convex disc 47, a second annular convex disc 48 and a third annular convex disc 49, three concentric annular grooves 411 are processed on one surface of the positioning rotary table 41 away from the Fresnel lens 2, the three concentric annular grooves 411 are in a ladder shape along the central axis direction of the positioning rotary table 41, the first rolling bearing 42 is sleeved outside the first adjusting cylinder 43, the second adjusting cylinder 44 is sleeved outside the first rolling bearing 42, the second rolling bearing 45 is sleeved outside the second adjusting cylinder 44, the third adjusting cylinder 46 is sleeved outside the second rolling bearing 45, the third adjusting cylinder 46 is fixedly installed in a central through hole of the fixed gear adjusting fixing plate 410 through a third rolling bearing 411, the first annular convex disc 47, the second annular convex disc 48 and the third annular convex disc 49 are fixedly sleeved with the first adjusting cylinder 43, the second adjusting cylinder 44 and the third adjusting cylinder 46 respectively, the first adjusting cylinder 43, the second adjusting cylinder 44 and the third adjusting cylinder 46 are respectively provided with matching threads with the first annular convex disc 47, the second annular convex disc 48 and the third annular convex disc 49, and the sizes of the first annular convex disc 47, the second annular convex disc 48 and the third annular convex disc 49 are sequentially increased; one side of the positioning turntable 41 close to the Fresnel lens 2 is connected with the fixing plate 33 through a connecting column 34; the lens mounting plate 31 and the fixed stop adjusting plate 410 are fixed on the unified supporting working plate, and a restoring spring (not shown) is arranged between the lens mounting plate 31 and the positioning turntable 41, and needs to be restored when the lens mounting plate is required to be changed from the high gear to the low gear.
The lengths of the thread sections on the outer sides of the first adjusting cylinder 43, the second adjusting cylinder 44 and the third adjusting cylinder 46 are just equal to the rest positions of the first annular convex disc 47, the second annular convex disc 48 and the third annular convex disc 49 after being clamped with the corresponding annular groove 411 respectively, and at this time, the positions of the corresponding annular convex discs cannot be changed by continuously screwing the first adjusting cylinder 43, the second adjusting cylinder 44 and the third adjusting cylinder 46 and huge friction resistance exists; of course, if more gears are needed, the number of the rolling bearings, the adjusting cylinders, the annular convex discs and the annular grooves can be correspondingly increased, the rest positions of the first annular convex disc 47, the second annular convex disc 48 and the third annular convex disc 49 after final clamping are different gears, and the movement distance is calculated according to the working distance.
Furthermore, the end portions of the first adjusting cylinder 43, the second adjusting cylinder 44 and the third adjusting cylinder 46 are provided with cross-shaped notches, so that the corresponding adjusting cylinders can be conveniently screwed by a fastening tool.
Further, the lens adjusting device further comprises a servo motor, a connecting rod and a motor fixing plate, wherein the servo motor is fixed through the motor fixing plate, the motor fixing plate is fixed with the surface of the lens installing plate block 31 through the connecting rod, a power output shaft of the servo motor is sleeved with a sleeve, a cross-shaped notch is machined in the end portion of the sleeve, the cross-shaped notch is used for detachably installing cross-shaped clamping plates with different sizes, and the cross-shaped clamping plates are clamped in the cross-shaped notches in the end portions of the first adjusting cylinder 43, the second adjusting cylinder 44 and the third adjusting cylinder 46; the motor fixing plate, the lens mounting plate 31 and the fixed gear adjusting fixing plate 410 are all fixed on the unified supporting working plate surface.
Further, a linear bearing is disposed on the surface of the lens mounting plate 31, and the connecting column 34 passes through an inner circle of the linear bearing and is fixed to the fixing plate 33.
The linear bearing can play a role in guiding, and further ensures that the centering position is not changed when the working distance is adjusted.
Further, the device further comprises a light source (not shown in the figure), wherein the light source comprises a first light source and a second light source, the first light source is arranged between the Fresnel lens and the detected object, and the second light source is arranged in front of the detected object. Namely, the first light source, the Fresnel lens, the object to be measured and the second light source are arranged in sequence. Optionally, the first light source is one or more of a ring light source, a bar light source and a coaxial light source; the second light source is a backlight light source. The determination is made in particular according to the nature of the substance to be detected.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. An optical lens for a vision system capable of being adjusted in a fixed gear manner, characterized in that: including ordinary camera lens, fresnel lens, mounting structure, decide and keep off adjusting device, mounting structure is including the camera lens installation plate piece that is used for installing the camera lens, the lens mount pad, fixed plate, the spliced pole that are used for installing fresnel lens, the lens mount pad is provided with the through-hole structure, fresnel lens installs in the through-hole of lens mount pad, the lens mount pad is fixed in the central through-hole of fixed plate, decide to keep off adjusting device and be used for quick adjustment fresnel lens's position and be connected with the fixed plate through the spliced pole, fresnel lens arranges in the place ahead of camera lens.
2. The vision system adjustable optical lens for fixed-stop as claimed in claim 1, wherein: the gear-fixing adjusting device comprises a positioning rotary table, a rolling bearing, an adjusting cylinder and an annular convex disc, wherein the rolling bearing comprises a first rolling bearing, a second rolling bearing, a third rolling bearing, a right angle and an N rolling bearing, the adjusting cylinder comprises a first adjusting cylinder, a second adjusting cylinder, a third adjusting cylinder, a right angle and an N adjusting cylinder, the annular convex disc comprises a first annular convex disc, a second annular convex disc, a third annular convex disc, a right angle and an N annular convex disc, N concentric annular grooves are processed on one surface of the positioning rotary table, which is far away from a Fresnel lens, and are in a ladder shape along the central axis direction of the positioning rotary table, the first rolling bearing is sleeved on the outer side of the first adjusting cylinder, the second adjusting cylinder is sleeved on the outer ring of the first rolling bearing, the second rolling bearing is sleeved on the outer side of the second adjusting cylinder, the third adjusting cylinder is sleeved on the outer ring of the second rolling bearing in a similar manner, the Nth adjusting cylinder is fixedly installed in a central through hole of the fixed gear adjusting fixing plate through the Nth rolling bearing, the first annular convex disc, the second annular convex disc, the third annular convex disc and the Nth annular convex disc are fixedly sleeved with the first adjusting cylinder, the second adjusting cylinder, the third adjusting cylinder, the. One side of the positioning rotary disc, which is close to the Fresnel lens, is connected with the fixed plate through the connecting column, the lens mounting plate block and the fixed gear adjusting fixed plate are fixed on the unified supporting working plate surface, a return spring is arranged between the lens mounting plate block and the positioning rotary disc surface, and N is a natural number greater than 3.
3. The vision system adjustable optical lens for fixed-stop as claimed in claim 2, wherein: the lengths of the thread sections on the outer sides of the first adjusting cylinder, the second adjusting cylinder, the third adjusting cylinder and the Nth adjusting cylinder are just equal to the rest positions of the first annular convex disc, the second annular convex disc, the third annular convex disc, the N-th annular convex disc and the corresponding annular groove after being clamped.
4. A vision system adjustable optical lens for fixed-stop as claimed in any one of claims 2 or 3, characterized in that: the end parts of the first adjusting cylinder, the second adjusting cylinder, the third adjusting cylinder and the Nth adjusting cylinder are provided with crossed notches.
5. The vision system adjustable optical lens for fixed-stop as claimed in claim 4, wherein: the lens mounting plate is characterized by further comprising a servo motor, a connecting rod and a motor fixing plate, wherein the servo motor is fixed through the motor fixing plate, the motor fixing plate is fixed with the lens mounting plate through the connecting rod, a power output shaft of the servo motor is sleeved with a sleeve, a cross-shaped notch is machined in the end portion of the sleeve, the cross-shaped notch is used for detachably mounting cross-shaped clamping plates of different sizes, and the cross-shaped clamping plates are clamped in the cross-shaped notches in the end portions of the first adjusting cylinder, the second adjusting cylinder, the third adjusting cylinder, the N adjusting cylinder; the motor fixing plate, the lens mounting plate block and the fixed gear adjusting fixing plate are all fixed on the unified supporting working plate surface.
6. The vision system adjustable optical lens for fixed-stop as claimed in claim 1, wherein: the surface of the lens mounting plate is provided with a linear bearing, and the connecting column penetrates through an inner circle of the linear bearing and is fixed with the fixing plate.
7. The vision system adjustable optical lens for fixed-stop as claimed in claim 1, wherein: the Fresnel lens is arranged between the Fresnel lens and the detected object, and the second light source is arranged in front of the detected object.
8. The vision system adjustable optical lens for fixed-stop as claimed in claim 7, wherein: the first light source is one or more of an annular light source, a strip light source and a coaxial light source; the second light source is a backlight light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020311264.XU CN212483953U (en) | 2020-03-13 | 2020-03-13 | Optical lens capable of being adjusted in gear-fixing mode for vision system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020311264.XU CN212483953U (en) | 2020-03-13 | 2020-03-13 | Optical lens capable of being adjusted in gear-fixing mode for vision system |
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| Publication Number | Publication Date |
|---|---|
| CN212483953U true CN212483953U (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020311264.XU Active CN212483953U (en) | 2020-03-13 | 2020-03-13 | Optical lens capable of being adjusted in gear-fixing mode for vision system |
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| Country | Link |
|---|---|
| CN (1) | CN212483953U (en) |
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- 2020-03-13 CN CN202020311264.XU patent/CN212483953U/en active Active
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