CN208126000U

CN208126000U - Machine Vision Detection camera lens

Info

Publication number: CN208126000U
Application number: CN201721764951.1U
Authority: CN
Inventors: 杨利全; 谢超; 张熠; 王孝晨
Original assignee: Suzhou Co Ltd Of Ling Hou Robot
Current assignee: Suzhou Co Ltd Of Ling Hou Robot
Priority date: 2017-12-18
Filing date: 2017-12-18
Publication date: 2018-11-20
Anticipated expiration: 2027-12-18

Abstract

The utility model belongs to optical lens technology field, is related to a kind of Machine Vision Detection camera lens, including along incident ray transmission direction successively the first lens, the second lens of co-axial alignment, the third lens, perfect lens and image planes eyeglass.The utility model can achieve while top and image side faces to shooting object by the parameter designing to the optical lens, avoids in Machine Vision Detection or identifies in application using more cameras and imaging lens.

Description

Machine Vision Detection camera lens

Technical field

The utility model relates to optical lens technology field, in particular to one kind can shoot determinand front and side simultaneously The Machine Vision Detection camera lens in face.

Background technique

With the fast development of industrial automation, machine higher and higher to the technical requirements of machine visual lens, traditional Vision-based detection camera lens can only shoot the one side of measured object, if necessary to detect multi-panel (front and side) simultaneously, then need to take With multiple detector lens, detection device space is not only taken up, and increases the cost of equipment.

Therefore, it is necessary to provide the new optical lens of one kind to solve the above problems.

Summary of the invention

The main purpose of the utility model is to provide the machine views that one kind can shoot determinand front and side simultaneously Feel detector lens.

The utility model is achieved through the following technical solutions above-mentioned purpose：A kind of Machine Vision Detection camera lens, including edge enter Penetrate light transmission direction successively the first lens, the second lens of co-axial alignment, the third lens, perfect lens and image planes eyeglass；Institute Stating the first lens is the biconvex positive lens for including the first plane of incidence S1 and the first exit facet, and the axial width of first lens is 10mm, the radius of curvature of first plane of incidence are 106.41mm, and the radius of curvature of the first exit facet is 119.45mm；Described second thoroughly Mirror is the biconvex positive lens for including second plane of incidence and the second exit facet, and the axial width d2 of the second lens is 16mm, and second enters The radius of curvature for penetrating face is 100.51mm, and the radius of curvature of the second exit facet is 60.5mm；The third lens be include third The concave-convex negative lens of the plane of incidence and third exit facet, the axial width of the third lens are 13mm, and the third plane of incidence is radius of curvature The concave surface of 59.0mm, third exit facet are the convex surface of radius of curvature 527.33mm, radius of curvature and thickness error all ± 5% with It is interior.

Specifically, the refractive index and Abbe number ratio of first lens are 0.025, within error ± 5%.

Specifically, the refractive index and Abbe number ratio of second lens are 0.065, within error ± 5%.

Specifically, the refractive index and Abbe number ratio of the third lens are 0.055, within error ± 5%.

Specifically, the focal length of the perfect lens is 9mm, the axial spacing of the perfect lens and the third lens is The spacing of 100mm, the perfect lens and image planes eyeglass is 8.7mm.

Compared with prior art, the beneficial effect of machine vision-based detection camera lens is：

The utility model can achieve while by the parameter designing to the optical lens to the top and side of shooting object Face imaging avoids using more cameras and imaging lens in Machine Vision Detection or identification application.

Detailed description of the invention

Fig. 1 is the schematic diagram under 1 Machine Vision Detection camera lens working condition of embodiment.

Fig. 2 is the schematic diagram under 2 Machine Vision Detection camera lens working condition of embodiment.

Fig. 3 is the schematic diagram under 3 Machine Vision Detection camera lens working condition of embodiment.

Digital representation in figure：

The first lens of L1-,

First plane of incidence of S1-,

The first exit facet of S2-；

The second lens of L2-,

The second exit facet of S3-,

The second exit facet of S4-；

L3- the third lens,

The S5- third plane of incidence,

S6- third exit facet；

PL- perfect lens；

S- image planes eyeglass；

O1- object plane.

Specific embodiment

The utility model is described in further detail combined with specific embodiments below.

The utility model is a kind of Machine Vision Detection camera lens, including along incident ray transmission direction successively co-axial alignment First lens L1, the second lens L2, the third lens L3, perfect lens PL and image planes eyeglass S；Wherein the first lens L1 be include The biconvex positive lens of one plane of incidence S1 and the first exit facet S2, the axial width d1 of the first lens L1 are 10mm, first plane of incidence The radius of curvature of S1 is 106.41mm, and the radius of curvature of the first exit facet S2 is 119.45mm；Second lens L2 be include second The biconvex positive lens of plane of incidence S3 and the second exit facet S4, the axial width d2 of the second lens L2 are 16mm, the second plane of incidence S3 Radius of curvature be 100.51mm, the radius of curvature of the second exit facet S4 is 60.5mm；The third lens L3 be include third incidence The concave-convex negative lens of face S5 and third exit facet S6, the axial width of the third lens L3 are 13mm, and third plane of incidence S5 is curvature The concave surface of radius 59.0mm, third exit facet S6 are the convex surface of radius of curvature 527.33mm, and radius of curvature and thickness error all exist Within ± 5%.It is object space on the left of camera lens, is image space on the right side of camera lens.The object plane O1 of determinand is located at object space, the light meeting of determinand It sequentially passes through the first lens L1, the second lens L2, the third lens L3 and perfect lens PL to project on image planes eyeglass S, image planes mirror Imaging corresponds to a conical region on piece S, so can avoid simultaneously to the top and image side faces for shooting object in machine More cameras and imaging lens are used in vision-based detection or identification application.

The refractive index and Abbe number ratio of first lens L1 is 0.025, the refractive index and Abbe number ratio of the second lens L2 It is 0.065, the refractive index and Abbe number ratio of the third lens L3 is 0.055, and error is within ± 5%.Refractive index and Abbe Number ratio is determined by the glass material of lens, selects the lens of specific materials that the resolution ratio of imaging and brightness can just be made to meet observation It is required that.

The focal length of perfect lens PL is that the axial spacing of 9mm, perfect lens PL and the third lens L3 are 100mm, ideal saturating The spacing of mirror PL and image planes eyeglass S is 8.7mm.Setting is imaged than more visible in this way.

As shown in Figure 1 to Figure 3, the axial distance wd of object plane O1 to S1 can change according to the difference of the high h of object：

Embodiment 1：

When the high h1 of object is 25.62 ± 2mm, corresponding wd1 is 70 ± 3mm.

Embodiment 2：

When the high h2 of object is 32.92 ± 2mm, corresponding wd2 is 52 ± 3mm.

Embodiment 3：

When the high h3 of object is 53.46 ± 2mm, corresponding wd3 is 29 ± 3mm.

Above-described is only some embodiments of the utility model.For those of ordinary skill in the art, Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to practical Novel protection scope.

Claims

1. a kind of Machine Vision Detection camera lens, it is characterised in that：Including along incident ray transmission direction successively co-axial alignment One lens, the second lens, the third lens, perfect lens and image planes eyeglass；First lens be include the first plane of incidence S1 and The axial width of the biconvex positive lens of first exit facet, first lens is 10mm, and the radius of curvature of first plane of incidence is 106.41mm, the radius of curvature of the first exit facet are 119.45mm；Second lens be include that second plane of incidence and second go out The biconvex positive lens in face are penetrated, the axial width d2 of the second lens is 16mm, and the radius of curvature of second plane of incidence is 100.51mm, the The radius of curvature of two exit facets is 60.5mm；The third lens be include the third plane of incidence and third exit facet bumps it is negative saturating Mirror, the axial width of the third lens are 13mm, and the third plane of incidence is the concave surface of radius of curvature 59.0mm, and third exit facet is curvature The convex surface of radius 527.33mm, radius of curvature and thickness error are all within ± 5%.

2. Machine Vision Detection camera lens according to claim 1, it is characterised in that：The refractive index of first lens and Ah Shellfish number ratio is 0.025, within error ± 5%.

3. Machine Vision Detection camera lens according to claim 1, it is characterised in that：The refractive index of second lens and Ah Shellfish number ratio is 0.065, within error ± 5%.

4. Machine Vision Detection camera lens according to claim 1, it is characterised in that：The refractive index of the third lens and Ah Shellfish number ratio is 0.055, within error ± 5%.

5. Machine Vision Detection camera lens according to claim 1, it is characterised in that：The focal length of the perfect lens is 9mm, The axial spacing of the perfect lens and the third lens is 100mm, and the spacing of the perfect lens and image planes eyeglass is 8.7mm.