CN220419663U - Large aperture telecentric lens - Google Patents
Large aperture telecentric lens Download PDFInfo
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- CN220419663U CN220419663U CN202322336495.2U CN202322336495U CN220419663U CN 220419663 U CN220419663 U CN 220419663U CN 202322336495 U CN202322336495 U CN 202322336495U CN 220419663 U CN220419663 U CN 220419663U
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- lens
- telecentric
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- 239000007788 liquid Substances 0.000 claims abstract description 69
- 238000005259 measurement Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003990 capacitor Substances 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of film capacitors, in particular to a large-aperture telecentric lens, which comprises a telecentric lens, wherein a liquid lens device is arranged on the right side of the telecentric lens, and consists of a shell III, a liquid lens barrel, a mounting rack, an adjusting turntable, a fixing screw, a working switch and a lens interface; a liquid lens barrel is arranged in the middle of the three right sides of the shell, a liquid lens is arranged in the liquid lens barrel, a mounting rack is arranged on the right side of the liquid lens barrel, the liquid lens barrel has a protective effect on the liquid lens, the telecentric lens can eliminate the parallax characteristic of the standard lens through a constant non-field angle, the telecentric lens has the same view field at any distance from the lens, and the current or voltage at the two ends of the liquid lens can be adjusted by adjusting the turntable, so that the hydrophilicity of the oil-water phase intersecting surface film in the liquid lens is changed, the shape of the film is further changed, the curvature of the liquid lens is adjusted, the measured object is made into a clear image, and measurement and analysis are performed.
Description
Technical Field
The utility model relates to the technical field of film capacitors, in particular to a large-aperture telecentric lens.
Background
In recent years, with the rapid development of the machine vision industry in various fields, a vision system with high resolution, large visual field range and high processing speed is continuously produced, and the requirement on an optical lens matched with the vision system is higher. The telecentric lens is a lens specially designed for correcting parallax of the traditional industrial lens, and can ensure that the obtained image magnification cannot change along with the change of object distance within the depth of field, and the telecentric lens has the characteristics of small distortion, large depth of field, good uniformity and the like, so that the telecentric lens is favored by various machine vision application occasions.
Chinese patent discloses a large aperture telecentric lens (grant publication number CN 215340522U), which can satisfy the application situations of large field of view, large depth of field, low distortion, however, a large magnification is required, and a telecentric lens alone is not satisfactory. Accordingly, one skilled in the art would be able to provide a large aperture telecentric lens to solve the problems set forth in the background art.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a large-aperture telecentric lens, which comprises a telecentric lens, wherein a liquid lens device is arranged on the right side of the telecentric lens, and the liquid lens device consists of a shell III, a liquid lens barrel, a mounting rack, an adjusting turntable, a fixing screw, a working switch and a lens interface;
the liquid lens barrel is arranged in the middle of the three right sides of the shell, the liquid lens is arranged in the liquid lens barrel, the mounting frame is arranged on the right side of the liquid lens barrel, and the liquid lens barrel has a protective effect on the liquid lens.
Preferably: the liquid lens device comprises a mounting frame, wherein an adjusting turntable is arranged on a liquid lens barrel on the right side of the mounting frame, lens interfaces are arranged on the right side of the adjusting turntable, fixing screws are arranged on the front side and the rear side of the mounting frame, a working switch is arranged on the right side below the mounting frame, the liquid lens device can be conveniently detached and replaced through the fixing screws, and current or voltage at two ends of the liquid lens can be adjusted through the adjusting turntable.
Preferably: the left side of the telecentric lens is provided with a first shell, the inside of the telecentric lens is provided with a first lens, and the telecentric lens can eliminate the parallax characteristic of the standard lens through a constant non-field angle.
Preferably: the right side behind the first lens is provided with a second lens, the right side of the second lens is provided with a third lens, and the telecentric lens has the same field of view at any distance from the lens.
Preferably: a telecentric objective lens group is arranged on the right side of the liquid lens device, a second shell is arranged on the right side of the telecentric objective lens group, the external image acquisition device acquires images through the telecentric lens, the telecentric objective lens group and the liquid lens.
Preferably: the telecentric objective lens group is internally provided with a fourth lens, the right side of the fourth lens is provided with a fifth lens, the right side of the fifth lens is provided with a target surface, and the curvature of the liquid lens is further adjusted by adjusting the lens of the liquid lens, so that shooting is focused on a measured object.
The utility model has the technical effects and advantages that:
1. the telecentric lens can eliminate parallax characteristics of the standard lens by a constant non-field angle, and has the same field of view at any distance from the lens.
2. The liquid lens device is convenient to detach and replace through the fixing screw, and the current or the voltage at the two ends of the liquid lens can be adjusted through the adjusting turntable, so that the hydrophilicity of the oil-water phase intersecting surface film in the liquid lens is changed, the shape of the film is further changed, the curvature of the liquid lens is adjusted, a measured object is made to be a clear image, and measurement and analysis are performed.
3. The external image acquisition equipment performs image acquisition through the telecentric lens and the telecentric objective lens group and the liquid lens, and when the photographed object is not in the standard object distance range or is not in the depth of field range, the curvature of the liquid lens is further adjusted by adjusting the lens of the liquid lens, so that the photographed and focused magnification on the measured object is finished to clearly measure.
Drawings
Fig. 1 is a schematic structural diagram of a large aperture telecentric lens according to an embodiment of the present application;
fig. 2 is a schematic top view of a large aperture telecentric lens according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a liquid lens device in a large aperture telecentric lens according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a lens interface in a large aperture telecentric lens according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an internal lens in a large aperture telecentric lens according to an embodiment of the present application.
In the figure: 1. a telecentric lens; 2. a first shell; 3. a telecentric objective set; 4. a second shell; 5. a liquid lens device; 51. a third shell; 52. a liquid lens barrel; 53. a mounting frame; 54. adjusting a turntable; 55. a set screw; 56. a work switch; 57. a lens interface; 6. a first lens; 7. a second lens; 8. a third lens; 9. a liquid lens; 10. a fourth lens; 11. a fifth lens; 12. a target surface.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description. The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Examples
Referring to fig. 1 to 5, in this embodiment, a large aperture telecentric lens is provided, which includes a telecentric lens 1, a first housing 2 is provided on the left side of the telecentric lens 1, a first lens 6 is provided inside the telecentric lens 1, a second lens 7 is provided on the right side behind the first lens 6, a third lens 8 is provided on the right side of the second lens 7, the telecentric lens 1 can eliminate parallax characteristics of a standard lens through a constant non-field angle, and the telecentric lens 1 has the same field of view at any distance from the lens.
The liquid lens device 5 is arranged on the right side of the telecentric lens 1, the liquid lens device 5 consists of a third shell 51, a liquid lens barrel 52, a mounting frame 53, an adjusting rotary disc 54, a fixing screw 55, a working switch 56 and a lens interface 57, the liquid lens barrel 52 is arranged in the middle of the right side of the third shell 51, the liquid lens 9 is arranged in the liquid lens barrel 52, the mounting frame 53 is arranged on the right side of the liquid lens barrel 52, the adjusting rotary disc 54 is arranged on the right side of the adjusting rotary disc 54, the lens interface 57 is arranged on the front side and the rear side of the mounting frame 53, the fixing screw 55 is arranged on the right side below the mounting frame 53, the working switch 56 is arranged on the right side below the mounting frame 53, the liquid lens device 5 can be conveniently detached and replaced through the fixing screw 55, and the current or voltage at two ends of the liquid lens 9 can be adjusted through the adjusting rotary disc 54, so that the hydrophilicity of an oil-water phase intersecting surface film in the liquid lens 9 is changed, the film shape is further adjusted, the curvature of the liquid lens 9 is adjusted, a measured object is made into a clear image, and measurement and analysis are performed.
The right side of the liquid lens device 5 is provided with a telecentric object lens group 3, the right side of the telecentric object lens group 3 is provided with a second shell 4, a fourth lens 10 is arranged in the telecentric object lens group 3, the right side of the fourth lens 10 is provided with a fifth lens 11, the right side of the fifth lens 11 is provided with a target surface 12, and an external image acquisition device performs image acquisition with the liquid lens 9 through the telecentric lens 1 and the telecentric object lens group 3, and when a shooting object is not in a standard object distance range or is not in a depth of field range, the curvature of the liquid lens 9 is adjusted by adjusting the lens of the liquid lens 9, so that the shooting is focused on the measured object, and clear measurement is completed.
The working principle of the utility model is as follows: the telecentric lens 1 can eliminate parallax characteristics of a standard lens through a constant non-field angle, the telecentric lens 1 has the same field of view at any distance from the lens, the liquid lens device 5 can be conveniently detached and replaced through the fixing screw 55, current or voltage at two ends of the liquid lens 9 can be adjusted through the adjusting turntable 54, so that hydrophilicity of an oil-water phase intersecting surface film in the liquid lens 9 is changed, the film shape is further changed, curvature of the liquid lens 9 is adjusted, a measured object is made to be a clear image, measurement analysis is carried out, an external image acquisition device carries out image acquisition through the telecentric lens 1 and the telecentric objective lens group 3 and the liquid lens 9, when a photographed object is not in a standard object distance range or is not in a depth of field range, the curvature of the liquid lens 9 is further adjusted, the photographed object is focused on the measured object, and clear measurement is completed.
It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (6)
1. The large-aperture telecentric lens comprises a telecentric lens (1) and is characterized in that a liquid lens device (5) is arranged on the right side of the telecentric lens (1), and the liquid lens device (5) consists of a housing III (51), a liquid lens barrel (52), a mounting rack (53), an adjusting turntable (54), a fixing screw (55), a working switch (56) and a lens interface (57);
the middle of the right side of the third shell (51) is provided with a liquid lens barrel (52), a liquid lens (9) is arranged in the liquid lens barrel (52), and the right side of the liquid lens barrel (52) is provided with a mounting frame (53).
2. The large aperture telecentric lens according to claim 1, wherein the right side of the mounting frame (53) is provided with an adjusting turntable (54) on the liquid lens barrel (52), the right side of the adjusting turntable (54) is provided with a lens interface (57), the front side and the rear side of the mounting frame (53) are provided with fixing screws (55), and the right side below the mounting frame (53) is provided with a working switch (56).
3. A large aperture telecentric lens according to claim 1, characterized in that the telecentric lens (1) has a housing one (2) on the left side, and a first lens (6) inside the telecentric lens (1).
4. A large aperture telecentric lens according to claim 3, characterized in that said first lens (6) has a second lens (7) on the rear right side and a third lens (8) on the right side of said second lens (7).
5. A large aperture telecentric lens according to claim 1, characterized in that the liquid lens device (5) has a telecentric objective lens group (3) on the right side, and a second housing (4) on the right side of the telecentric objective lens group (3).
6. The large aperture telecentric lens according to claim 5, wherein the telecentric objective lens group (3) is internally provided with a fourth lens (10), the right side of the fourth lens (10) is provided with a fifth lens (11), and the right side of the fifth lens (11) is provided with a target surface (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322336495.2U CN220419663U (en) | 2023-08-30 | 2023-08-30 | Large aperture telecentric lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322336495.2U CN220419663U (en) | 2023-08-30 | 2023-08-30 | Large aperture telecentric lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220419663U true CN220419663U (en) | 2024-01-30 |
Family
ID=89657651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322336495.2U Active CN220419663U (en) | 2023-08-30 | 2023-08-30 | Large aperture telecentric lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220419663U (en) |
-
2023
- 2023-08-30 CN CN202322336495.2U patent/CN220419663U/en active Active
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