CN215769174U - A increase times mirror for telecentric optics system - Google Patents
A increase times mirror for telecentric optics system Download PDFInfo
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- CN215769174U CN215769174U CN202122111341.4U CN202122111341U CN215769174U CN 215769174 U CN215769174 U CN 215769174U CN 202122111341 U CN202122111341 U CN 202122111341U CN 215769174 U CN215769174 U CN 215769174U
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Abstract
The utility model discloses a doubling mirror for a telecentric optical system, which comprises a first lens, a second cemented lens, a third lens, a shell component, a first space ring, a second space ring and a pressing ring, wherein the first lens is a biconcave lens, the second cemented lens comprises a first biconcave lens and a second biconvex lens, and the third lens is a biconvex lens.
Description
Technical Field
The utility model relates to the field of telecentric optical systems, in particular to a multiplying mirror for a telecentric optical system.
Background
The telecentric optical system is mainly applied to the field of machine vision with higher detection precision, is an important component of a machine vision product, in a precision optical measurement system, because a common optical lens has certain restriction factors, such as the deformation of an image, errors caused by visual angle selection, uncertainty of a boundary caused by improper light source interference and the like, the measurement precision is further influenced, and the telecentric optical lens can effectively reduce or even eliminate the problems, so that the telecentric optical lens becomes a decisive component of the precision optical measurement system, and the application field is more and more extensive.
When the detection is carried out on an industrial site, in order to enable an image collected by an industrial camera to be clear, a proper view field size needs to be selected according to the size of a detected object, but the magnification ratio of a telecentric optical lens is fixed when the telecentric optical lens is manufactured generally, and when a magnifying lens is arranged in the telecentric optical lens, the lens can be lengthened along with the increase of the magnification ratio, so that the utilization ratio of the lens is greatly reduced, and the installation requirements of enterprises are difficult to meet in some production occasions with limited space.
Because the detection distance between the detection device and the workpiece and the space for installing the machine vision lens by the detection device are limited, the design of the doubling mirror for the telecentric optical system is necessary under the condition of not changing the imaging quality of the telecentric optical lens.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide the multiplying mirror for the telecentric optical system, which has a simple structure, enables the size of the field of view of the telecentric system to be flexibly adjusted on the premise of not influencing the imaging quality, and has the advantages of small space required by installation and more convenient and flexible installation.
The technical scheme adopted by the utility model is as follows: comprises the following steps: the lens comprises a first lens, a second cemented lens, a third lens, a shell component, a first space ring, a second space ring and a pressing ring;
the first lens, the second cemented lens, the third lens, the first space ring, the second space ring and the pressing ring are arranged in the shell component, the first lens is arranged at the leftmost side in the shell component, the first space ring is arranged at the right side of the first lens, the second cemented lens is arranged at the right side of the first space ring, the second space ring is arranged at the right side of the second cemented lens, the third lens is arranged at the right side of the second space ring, and the pressing ring is arranged at the right side of the third lens;
the first lens is of a biconcave structure;
the second cemented lens comprises a first biconcave lens and a second biconvex lens which are coaxially distributed along the incident light;
the third lens is of a biconvex structure.
Further, the second cemented lens is formed by a first biconcave lens and a second biconvex lens which are coaxially distributed along the incident light and are cemented by optical cement.
Further, the first lens material is H-ZPK1 glass; the first biconcave lens material of the second cemented lens is H-ZBAF16 glass; the second biconvex lens material of the second cemented lens is H-LAK12 glass; the third lens material is H-ZK20 glass.
Further, the clear aperture of the first lens is phi 11(-0.04, -0.02) mm, the center thickness is 2.0 +/-0.02 mm, the curvature of the left concave surface is-18.300 mm, and the curvature of the right concave surface is 18.300 mm; the clear aperture of the first biconcave lens of the second cemented lens is phi 14(-0.04, -0.02) mm, the center thickness is 3.8 +/-0.02 mm, the clear aperture of the second biconvex lens of the second cemented lens is phi 14(-0.04, -0.02) mm, the center thickness is 4.2 +/-0.02 mm, the curvature of the left concave surface of the second cemented lens is-37.590 mm, the curvature of the cemented surface is 24.690mm, and the curvature of the right convex surface is-21.240 mm; the light-transmitting aperture of the third lens is phi 14(-0.04, -0.02) mm, the center thickness is 2.8 +/-0.02 mm, the curvature of the left convex surface is 267.000mm, and the curvature of the right convex surface is-35.000 mm.
Furthermore, the first space ring, the second space ring and the pressing ring are all made of 6061 stainless steel.
The utility model has the beneficial effects that:
the utility model relates to a zoom lens for a telecentric optical system, which comprises a first lens, a second cemented lens, a third lens, a shell component, a first space ring, a second space ring and a pressing ring.
Drawings
FIG. 1 is a schematic view of a magnifying lens optical system for a telecentric optical system according to the present invention;
FIG. 2 is a schematic diagram of a magnification increasing mirror for a telecentric optical system according to the present invention in an image capturing system;
fig. 3 is a schematic diagram showing a magnification front-back comparison of a magnifying lens for a telecentric optical system according to the present invention.
Description of the reference numerals
100-magnifying lens, 110-first lens, 120-second cemented lens, 130-third lens, 140-shell component, 150-first space ring, 160-second space ring, 170-pressing ring, 200-industrial camera, 300-telecentric optical lens and 400-measured object.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings and examples:
it should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined by the following claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same, are intended to fall within the scope of the present disclosure.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, which illustrates a specific embodiment of the present invention; the utility model discloses a zoom lens for a telecentric optical system, which comprises: a first lens 110, a second cemented lens 120, a third lens 130, a housing assembly 140, a first spacer 150, a second spacer 160, a pressing ring 170;
the first lens 110, the second cemented lens 120, the third lens 130, the first space ring 150, the second space ring 160 and the pressing ring 170 are installed inside the housing assembly 140, the first lens 110 is installed at the leftmost side inside the housing assembly 170, the first space ring 150 is installed at the right side of the first lens 110, the second cemented lens 120 is installed at the right side of the first space ring 150, the second space ring 160 is installed at the right side of the second cemented lens 120, the third lens 130 is installed at the right side of the second space ring 160, and the pressing ring 170 is installed at the right side of the third lens 130;
the first lens 110 has a biconcave structure;
the second cemented lens 120 includes a first biconcave lens and a second biconvex lens coaxially distributed along the incident light;
the third lens 130 has a biconvex structure.
In the utility model, as shown in fig. 1 and 2, a magnifying lens 100 is added in a telecentric system, so that the defect that the magnifying power of a telecentric optical lens in the telecentric system cannot be adjusted is improved on the premise of not influencing the optical imaging quality, the length size of the telecentric optical lens is greatly shortened, the defect that the length of the external dimension is overlong when the magnifying lens is arranged in the telecentric optical lens is avoided, and the telecentric optical lens has the characteristics of adjustable magnifying power, small space required by installation, simple structure and convenience in installation and use.
Preferably, as shown in fig. 1, the second cemented lens 120 is composed of a first biconcave lens and a second biconvex lens which are coaxially arranged along the incident light ray and cemented by using an optical cement.
Preferably, as shown in FIG. 1, the first lens 110 is made of H-ZPK1 glass; the first biconcave lens material of the second cemented lens 120 is H-ZBAF16 glass; the second biconvex lens material of the second cemented lens 120 is H-LAK12 glass; the material of the third lens 130 is H-ZK20 glass.
Preferably, as shown in fig. 1, the clear aperture of the first lens 110 is
(-0.04, -0.02) mm, center thickness of 2.0 + -0.02 mm, left concave curvature of-18.300 mm, right concave curvature of 18.300 mm; the clear aperture of the first biconcave lens of the second cemented lens 120 is
(-0.04, -0.02) mm, a center thickness of 3.8 + -0.02 mm, and a clear aperture of the second biconvex lens of the second cemented lens 120
(-0.04, -0.02) mm, center thickness of 4.2 + -0.02 mm, curvature of the left concave surface of the second cemented lens 120 of-37.590 mm, curvature of the cemented surface of 24.690mm, and curvature of the right convex surface of-21.240 mm; the clear aperture of the third lens 130 is
(-0.04, -0.02) mm, center thickness of 2.8 + -0.02 mm, curvature of the left convex surface of 267.000mm, and curvature of the right convex surface of-35.000 mm.
Preferably, as shown in fig. 1, the first space ring 150, the second space ring 160, and the pressing ring 170 are all made of 6061 stainless steel, and compared with a traditional rubber material, the 6061 stainless steel is not easily deformed to affect the measurement accuracy.
Preferably, as shown in fig. 1, the optical system of the magnifying lens 100 of the present invention comprises four lenses, wherein the four lenses are all spherical structures that are easy to process.
Preferably, as shown in fig. 2, the utility model is an application of a magnification-increasing mirror for a telecentric optical system in a telecentric optical image acquisition system: the industrial camera 200 is an image acquisition original used for shooting and acquiring images, the telecentric optical lens 300 is an optical lens externally arranged on the industrial camera 200 and used for enhancing the quality of the images to be acquired, in an image acquisition system consisting of the industrial camera 200 and the telecentric optical lens 300, the multiplying lens 100 is arranged between the industrial camera 200 and the telecentric optical lens 300, the object side of the multiplying lens 100 faces the target side of the telecentric optical lens 300, the target side of the multiplying lens 100 faces the lens of the industrial camera 200, the multiplying lens 100 and the center of the telecentric optical lens 300 are positioned on the same optical axis, and the embodiment is the most common specific application mode.
Preferably, as shown in fig. 3, a schematic diagram of comparing before and after the magnification of the magnifying lens for the telecentric optical system provided by the present invention is shown, the left side of the picture is the magnification effect without using the magnifying lens 100, and the right side of the picture is the magnification effect after using the magnifying lens 100, as can be seen from the comparison diagram, the field of view of the telecentric system is reduced after using the magnifying lens 100, the magnification is obviously increased, the details of the object to be detected 400 are highlighted, and the detection result is more accurate.
Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Many other changes and modifications can be made without departing from the spirit and scope of the utility model. It is to be understood that the utility model is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (5)
1. A magnification lens for a telecentric optical system, comprising: a first lens (110), a second cemented lens (120), a third lens (130), a housing assembly (140), a first space ring (150), a second space ring (160), a pressing ring (170);
the first lens (110), the second cemented lens (120), the third lens (130), the first space ring (150), the second space ring (160) and the pressing ring (170) are installed inside the shell assembly (140), the first lens (110) is installed at the leftmost side inside the shell assembly (140), the first space ring (150) is installed at the right side of the first lens (110), the second cemented lens (120) is installed at the right side of the first space ring (150), the second space ring (160) is installed at the right side of the second cemented lens (120), the third lens (130) is installed at the right side of the second space ring (160), and the pressing ring (170) is installed at the right side of the third lens (130);
the first lens (110) is of a biconcave structure;
the second cemented lens (120) comprises a first biconcave lens (121) and a second biconvex lens (122) which are coaxially distributed along the incident light;
the third lens (130) is of a biconvex structure.
2. A multiplying lens for a telecentric optical system according to claim 1, wherein the second cemented lens (120) is composed of a first biconcave lens (121) and a second biconvex lens (122) coaxially arranged along the incident light ray, cemented together with an optical cement.
3. A magnification multiplier mirror for a telecentric optical system according to claim 1, wherein:
the first lens (110) is made of H-ZPK1 glass;
the material of the first biconcave lens (121) of the second cemented lens (120) is H-ZBAF16 glass;
the material of the second biconvex lens (122) of the second cemented lens (120) is H-LAK12 glass;
the material of the third lens (130) is H-ZK20 glass.
4. A magnification multiplier mirror for a telecentric optical system according to claim 1, wherein:
the clear aperture of the first lens (110) is
The center thickness is 2.0 +/-0.02 mm, the curvature of the left concave surface is-18.300 mm, and the right concave surfaceThe curvature is 18.300 mm;
the clear aperture of the first biconcave lens (121) of the second cemented lens (120) is
The center thickness is 3.8 +/-0.02 mm;
the clear aperture of the second biconvex lens (122) of the second cemented lens (120) is
The center thickness is 4.2 +/-0.02 mm;
the curvature of the left side concave surface of the second cemented lens (120) is-37.590 mm, the curvature of the cemented surface is 24.690mm, and the curvature of the right side convex surface is-21.240 mm;
the clear aperture of the third lens (130) is
The center thickness is 2.8 plus or minus 0.02mm, the curvature of the left convex surface is 267.000mm, and the curvature of the right convex surface is-35.000 mm.
5. A magnification multiplier mirror for a telecentric optical system according to claim 1, wherein: the first space ring (150), the second space ring (160) and the pressing ring (170) are all made of 6061 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122111341.4U CN215769174U (en) | 2021-09-03 | 2021-09-03 | A increase times mirror for telecentric optics system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122111341.4U CN215769174U (en) | 2021-09-03 | 2021-09-03 | A increase times mirror for telecentric optics system |
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| Publication Number | Publication Date |
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| CN215769174U true CN215769174U (en) | 2022-02-08 |
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| CN202122111341.4U Active CN215769174U (en) | 2021-09-03 | 2021-09-03 | A increase times mirror for telecentric optics system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115728917A (en) * | 2022-11-14 | 2023-03-03 | 昆明宾瑞科技有限公司 | Telescope doubling optical system |
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2021
- 2021-09-03 CN CN202122111341.4U patent/CN215769174U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115728917A (en) * | 2022-11-14 | 2023-03-03 | 昆明宾瑞科技有限公司 | Telescope doubling optical system |
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