CN213934373U - Large-target-surface wide-working-distance high-definition industrial lens - Google Patents
Large-target-surface wide-working-distance high-definition industrial lens Download PDFInfo
- Publication number
- CN213934373U CN213934373U CN202120012611.3U CN202120012611U CN213934373U CN 213934373 U CN213934373 U CN 213934373U CN 202120012611 U CN202120012611 U CN 202120012611U CN 213934373 U CN213934373 U CN 213934373U
- Authority
- CN
- China
- Prior art keywords
- lens
- lens group
- optical element
- working
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lenses (AREA)
Abstract
The utility model discloses a wide working distance high definition industrial camera lens of big target surface, include the first battery of lens G that has negative focal power that sets gradually from the object plane to image planes1And a second lens group G having positive refractive power2When focusing, the first lens group G1Fixed relative to the image plane, the second lens group G2Moving along the optical axis; the large-target-surface wide-working-distance high-definition industrial lens further meets the following conditions: absolute F of 2.0 ≤1/F2|≤6.0，‑0.3≤f/F1Less than or equal to 0.1, wherein, F1Is a first lens group G1Focal length of (D), F2Is a second lens group G2F is the focal length of the optical system. The application meets the requirement of a high-pixel large target surface, the working distance range is wide, the resolving performance is good and stable, the distortion of an optical system is small, and the imaging quality is high.
Description
Technical Field
The utility model belongs to the technical field of optical lens, concretely relates to wide working distance high definition industrial lens of big target surface.
Background
With the continuous development of the machine manufacturing industry, the precision requirement of large-scale mechanical detection equipment is higher and higher, CCD and CMOS image sensors with tens of millions of pixels are more and more on the market, and the requirements on the pixels and the distortion of lenses are higher and higher. Especially in some defect detection, positioning monitoring, color sorting and other applications, the requirements on optical distortion, applicable working distance range, resolution and the like of an industrial lens are higher; however, the existing industrial lens generally has the defects of supporting different types or different degrees of small target surface, low pixel, narrow working distance, large distortion and the like, so the research and development of the industrial lens with high pixel, low distortion and wide working distance is more urgent.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, provide a big wide working distance high definition industrial lens of target surface, satisfy the demand of the big target surface of high pixel, and the working distance scope is wide, and the analytic ability is good and stable, and optical system distortion is little, and the imaging quality is high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a wide working distance high definition industrial camera lens of big target surface, include the first battery of lens G that has negative focal power that sets gradually from object plane to image planes1And a second lens group G having positive refractive power2When focusing, the first lens group G1Fixed relative to the image plane, the second lens group G2Moving along the optical axis;
the large-target-surface wide-working-distance high-definition industrial lens further meets the following conditions:
2.0≤|F1/F2|≤6.0
-0.3≤f/F1≤0.1
wherein, F1Is a first lens group G1Focal length of (D), F2Is a second lens group G2F is the focal length of the optical system.
Preferably, the first lens group G1Comprising an optical element L having a negative optical power11Optical element L11Is a first lens close to the object plane and satisfies the following conditions:
3.0≤|F11/F1|≤25
wherein, F11Is an optical element L11The focal length of (c).
Preferably, the first lens group G1Further comprises an optical element L12Optical element L12Is a single lens or a cemented lens group, and is disposed on the optical element L11On the image plane side.
Preferably, the first lens group G1Further comprises an optical element L13Optical element L13Is a single lens or a cemented lens group, and is disposed on the optical element L12On the image plane side.
Preferably, the optical element L11The following conditions are satisfied:
1.90≤nd≤1.98
wherein n isdIs the refractive index under d-line.
Preferably, the second lens group G2The focusing lens comprises a front lens group GF, an aperture diaphragm ST and a rear lens group GB which are sequentially arranged from an object plane to an image plane, wherein the front lens group GF, the aperture diaphragm ST and the rear lens group GB synchronously move along an optical axis during focusing.
Preferably, the rear lens group GB includes optical elements L arranged in order from the object plane to the image plane24Optical element L25And an optical element L26Optical element L24Being a cemented lens group, an optical element L25Being a single lens with positive or negative optical power, the optical element L26Is a biconvex lens with positive optical power.
Preferably, the front lens group GF includes optical elements L arranged in order from the object plane to the image plane21And an optical element L22Optical element L21Being a biconvex positive lens, an optical element L22Is a single lens or a cemented lens group.
Preferably, the front lens group GF further includes an optical element L23Optical elementPart L23Is a single lens or a cemented lens group, and is disposed on the optical element L22On the image plane side.
Preferably, the large-target-surface wide-working-distance high-definition industrial lens further comprises image surface protection glass CG.
Compared with the prior art, the beneficial effects of the utility model are that:
1) by controlling the first lens group G1And a second lens group G2The focal length ratio of the first lens group to the optical system improves the type multiplying power of the focusing group, achieves wider working distance in a short stroke, is high in focusing speed, can achieve high-quality imaging in a wide working distance range by adopting a rear focusing mode, meets the requirements of two thousand five million-level pixels and a target surface of 1.2 inches, and is high in pixel, large in target surface and small in distortion;
2) by controlling the first lens and the first lens group G on the object side1Focal length ratio of (1), refractive index of the first lens, aperture stop ST position, and second lens group G2The focal power distribution of the imaging system enables the imaging system to have smaller optical distortion and image deformation in the imaging process, the focal length after optics and the angle of a main ray are small, and the imaging is clearer.
Drawings
Fig. 1 is a schematic view of an overall structure of a lens barrel according to embodiment 1 of the present application;
FIG. 2 is a MTF chart of the lens of embodiment 1 of the present application at a working distance of 300 mm;
FIG. 3 is a MTF chart of the lens of embodiment 1 of the present application at a working distance of 800 mm;
FIG. 4 is an MTF chart of the lens of embodiment 1 of the present application at a lens working distance of 150 mm;
fig. 5 is a schematic view of an overall structure of a lens barrel according to embodiment 2 of the present application;
FIG. 6 is a MTF chart of embodiment 2 of the present application with a lens working distance of 300 mm;
FIG. 7 is an MTF chart at a lens working distance of 800mm in example 2 of the present application;
FIG. 8 is an MTF chart of embodiment 2 of the present application with a lens working distance of 150 mm;
fig. 9 is a schematic view of an overall structure of a lens barrel according to embodiment 3 of the present application;
FIG. 10 is a MTF chart of embodiment 3 of the present application with a lens working distance of 300 mm;
FIG. 11 is a MTF chart of embodiment 3 of the present application at a lens working distance of 800 mm;
fig. 12 is an MTF chart of embodiment 3 of the present application at a lens working distance of 150 mm.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The relevant symbols in the specification of the present application are defined as follows: f1Is a first lens group G1Focal length of (D), F2Is a second lens group G2F is the focal length of the optical system, F11Is an optical element L11Focal length of (1), SiIs the surface number; riIs the radius of curvature; diIs the on-axis surface distance between the ith surface and the (i + 1) th surface; n isdIs the refractive index; v isdIs Abbe number; fno is F number; theta is a half field angle, and RED is a magnification; d (0) is the working distance from the object plane to the optical element L11On-axis distance between object plane side vertices; d (1) is a first lens group G1And a second lens group G2On-axis distance between adjacent surface vertices; d (2) is a second lens group G2The on-axis distance between the adjacent surface vertexes of the cover glass CG; infinity denotes that the surface is planar. In the lens-related parameter data, the length unit is mm, and the unit will be omitted hereinafter.
It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
A large-target-surface wide-working-distance high-definition industrial lens comprises a first lens group G with negative focal power, which is sequentially arranged from an object plane to an image plane1And a second lens group G having positive refractive power2When focusing, the first lens group G1Fixed relative to the image plane, the second lens group G2Moving along the optical axis;
the large-target-surface wide-working-distance high-definition industrial lens further meets the following conditions:
2.0≤|F1/F2|≤6.0
-0.3≤f/F1≤0.1
wherein, F1Is a first lens group G1Focal length of (D), F2Is a second lens group G2F is the focal length of the optical system.
The lens comprises a first lens group G with negative focal power, which are sequentially arranged from an object plane to an image plane1And a second lens group G having positive refractive power2The light rays sequentially pass through the first lens group G1And a second lens group G2Each lens in (1) forms an image on an image plane IMG. By controlling the first lens group G1And a second lens group G2Focal length ratio of, the first lens group G1The focal length ratio of the optical system is less than or equal to 2.0 ≦ F1/F2Less than or equal to 6.0 and less than or equal to-0.3F/F1Within the range of less than or equal to 0.1, the focusing group, namely the second lens group G is improved2The type multiplying power realizes reaching wider working distance in short stroke, has high focusing speed, and adopts a rear focusing mode, namely the first lens group G is fixed1Make the second lens group G2The focusing is carried out along the movement of the optical axis, high-quality imaging can be realized in a wide working distance range, the requirements of two fifteen million-level pixels and a target surface of 1.2 inches are met, the focal length, the angle of a main ray and distortion change after optics are small, and imaging is clearer.
In one embodiment, the first lens group G1Comprising an optical element L having a negative optical power11Optical element L11Is a first lens close to the object plane and satisfies the following conditions:
3.0≤|F11/F1|≤25
wherein, F11Is an optical element L11The focal length of (c).
Wherein the first lens group G1L in (1)11Optical element and first lens group G1The focal length ratio is controlled to be less than or equal to 3.0 ≤ F11/F1The total optical length of the lens is shortened within the range of | < 25, and simultaneously, the lens is ensured to have smaller astigmatism and distortion under a large target surface, so that the lens has good imaging quality of an off-axis view field.
In one embodiment, the first lens group G1Further comprises an optical element L12Optical element L12Is a single lens or a cemented lens group, and is disposed on the optical element L11On the image plane side.
Wherein the optical element L is passed12The matching of different focal powers is realized, the magnification is adjusted, and various aberrations are corrected.
In one embodiment, the first lens group G1Further comprises an optical element L13Optical element L13Is a single lens or a cemented lens group, and is disposed on the optical element L12On the image plane side.
Wherein the optical element L is passed13Can further realize the matching of different focal powers, adjust the magnification and correct various aberrations.
In addition, the optical element L12And an optical element L13All the lens groups are single lenses or cemented lens groups, can be designed according to actual requirements, such as the size of a lens, the difficulty degree of processing or the imaging quality, and can be additionally provided or reduced1The number of optical elements of (a) is adjusted.
In one embodiment, the optical element L11The following conditions are satisfied:
1.90≤nd≤1.98
wherein n isdIs the refractive index under d-line.
Wherein the optical element L11Has a refractive index in the range of 1.90. ltoreq. ndThe refractive index of the optical element material is increased to be less than or equal to 1.98, which is beneficial to improving the lens aperture and reducing the spherical aberration by improving the refractive index of the optical element material, thereby realizing good imaging performance.
In one embodiment, the second lens group G2The focusing lens comprises a front lens group GF, an aperture diaphragm ST and a rear lens group GB which are sequentially arranged from an object plane to an image plane, wherein the front lens group GF, the aperture diaphragm ST and the rear lens group GB synchronously move along an optical axis during focusing.
The position of the aperture diaphragm ST is controlled, so that the condition that the entrance pupil position and the object distance change are consistent when the lens is focused is met, and the stability of relative illumination in a wide working distance is ensured.
In one embodiment, the rear lens group GB includes optical elements L arranged in order from an object plane to an image plane24Optical element L25And an optical element L26Optical element L24Being a cemented lens group, an optical element L25Being a single lens with positive or negative optical power, the optical element L26Is a biconvex lens with positive optical power.
Wherein the optical element L is formed by a cemented lens group24Correcting chromatic aberration after aperture stop ST and using biconvex positive lens optical element L26Further correcting aberration such as coma aberration and astigmatism, and increasing optical back intercept, providing physical space for the use of large target surface lens.
In one embodiment, the front lens group GF includes optical elements L arranged in sequence from the object plane to the image plane21And an optical element L22Optical element L21Being a biconvex positive lens, an optical element L22Is a single lens or a cemented lens group.
Wherein the optical element L is passed21And an optical element L22The matching of different focal powers can be realized, and the magnification is adjusted to correct various aberrations.
In one embodiment, the front lens group GF further comprises an optical element L23Optical element L23Is a single lens or a cemented lens group, and is disposed on the optical element L22On the image plane side.
Wherein, through opticsElement L23The matching of different focal powers can be further realized, and the magnification is adjusted to correct various aberrations.
In addition, the optical element L22And an optical element L23All the lenses are single lenses or cemented lens groups, which can be designed according to actual requirements, such as the size of a lens, the processing difficulty or the imaging quality, and can be adjusted by increasing or decreasing the number of optical elements of the front lens group GF.
In one embodiment, the large-target-surface wide-working-distance high-definition industrial lens further comprises image surface protection glass CG.
The protective glass CG is used for protecting the image surface from being damaged and prolonging the service life.
The lens is characterized in that a first lens group G is reasonably arranged1And a second lens group G2And the first lens group G1Compared with the focal length of an optical system, the type multiplying power of a focusing group is improved, a wider working distance is achieved in a short stroke, the focusing speed is high, a rear focusing mode is adopted, high-quality imaging can be achieved in a wide working distance range, and the requirements of high pixels, large target surface and low distortion are met; and the first lens group G are arranged on the object side in a reasonable way1Focal length ratio of (1), first lens L11Refractive index, aperture stop ST position and second lens group G2The focal power distribution realizes high-performance imaging on and off the axis, so that the imaging device has smaller optical distortion and image deformation in the imaging process, and has small optical focal length, small main ray angle and clear imaging.
Hereinafter, embodiments related to the large-target-area wide-working-distance high-definition industrial lens according to the present application will be described in detail with reference to the drawings.
Example 1:
as shown in FIGS. 1-4, a large target surface wide working distance high definition industrial lens comprises optical elements L arranged in sequence from an object plane to an image plane11Optical element L12Optical element L13Optical element L21Optical element L22Aperture stop ST, optical element L24Optical element L25Optical element L26And a picture surface protective glass CG.
Specifically, as shown in FIG. 1, L11Is a biconcave lens, L12Is a biconvex lens, L13Is a cemented lens group composed of a biconcave lens and a biconvex lens arranged in sequence from an object plane to an image plane, L21Is a biconvex positive lens, L22Is a cemented lens group consisting of a negative meniscus lens and a positive meniscus lens arranged in sequence from an object plane to an image plane, L24Is a cemented lens group composed of a negative meniscus lens and a biconvex lens arranged in sequence from an object plane to an image plane, L25Is a biconcave lens, L26The arrow in FIG. 1 indicates the second lens group G as a biconvex lens2To focus the group, the focus is moved along the optical axis. And satisfy | F1/F2|＝4.09，f/F1＝-0.19，|F11/F1And | ═ 5.84, the parameters of the lens satisfy: f is 24.97, Fno is 2.75, and 2 θ is 42 °. The optical data parameters of each lens of the lens are as follows.
In the above table, surface number SiIn the column, 0 denotes an object plane, 21 denotes an image plane, i.e., IMG denotes an image plane, and surface numbers 1 to 20 denote the surfaces of each lens, aperture stop, and cover glass from the object plane to the image plane in this order, and it should be noted that the cemented surfaces of different lenses in the cemented lens group denote the same surface.
The focusing data parameters of the present embodiment are as follows.
| D(0) | 300 | 800 | 150 |
| RED | 0.08 | 0.03 | 0.16 |
| f | 24.97 | 24.8 | 25.3 |
| D(1) | 2.72 | 4.02 | 0.62 |
| D(2) | 8.26 | 6.95 | 10.35 |
Fig. 2-4 show MTF graphs of the lens of this embodiment at different working distances of 300mm, 800mm, and 150mm, respectively, from which it can be obtained that the lens of this embodiment can realize high-quality imaging in a wide working distance range, and meet the requirements of high pixel, large target surface, and low distortion.
Example 2:
as shown in FIGS. 5-8, a large target surface wide working distance high definition industrial lens includes optical elements L arranged in sequence from an object plane to an image plane11Optical element L12Optical element L21Optical element L22Aperture stop ST, optical element L24Optical element L25Optical element L26And a picture surface protective glass CG.
Specifically, as shown in FIG. 5, L11Is a biconcave lens, L12Is a cemented lens group composed of a negative meniscus lens and a biconvex lens arranged in sequence from an object plane to an image plane, L21Is a biconvex positive lens, L22Is a cemented lens group composed of a biconvex lens and a biconcave lens arranged in sequence from an object plane to an image plane, L24Is a cemented lens group composed of a biconcave lens and a biconvex lens arranged in sequence from an object plane to an image plane, L25Is a plano-convex lens, L26The second lens group G is a biconvex lens, and the arrow in FIG. 5 indicates2To focus the group, the focus is moved along the optical axis. And satisfy | F1/F2|＝2.77，f/F1＝-0.28，|F11/F1The parameter of the lens satisfies | ═ 4.70: f is 24.75, Fno is 2.8, and 2 θ is 38 °. The optical data parameters of each lens in the lens barrel of the embodiment are as follows.
In the above table, surface number SiIn the column, 0 denotes an object plane, 19 denotes an image plane, i.e., IMG denotes an image plane, surface numbers 1 to 18 denote the surfaces of each lens, aperture stop, and cover glass from the object plane to the image plane in this order, and it should be noted that the cemented surfaces of different lenses in the cemented lens group denote the same surface.
The focusing data parameters of the present embodiment are as follows.
| D(0) | 300 | 800 | 150 |
| RED | 0.08 | 0.03 | 0.16 |
| f | 24.75 | 24.44 | 25.29 |
| D(1) | 2.88 | 4.26 | 0.54 |
| D(2) | 13.04 | 11.66 | 15.38 |
Fig. 6-8 show MTF graphs of the lens of this embodiment at different working distances of 300mm, 800mm, and 150mm, respectively, from which it can be obtained that the lens of this embodiment can realize high-quality imaging in a wide working distance range, and meet the requirements of high pixel, large target surface, and low distortion.
Example 3:
as shown in FIGS. 9-12, a wide-target-surface wide-working-distance high-definition industrial lens includes optical elements L sequentially arranged from an object plane to an image plane11Optical element L12Optical element L13Optical element L21Optical element L22Optical element L23Aperture diaphragmST, optical element L24Optical element L25Optical element L26And a picture surface protective glass CG.
Specifically, as shown in FIG. 9, L11Is a biconcave lens, L12Is a cemented lens group composed of a biconvex lens and a biconcave lens arranged in sequence from an object plane to an image plane, L13Is a biconvex lens, L21Is a biconvex positive lens, L22Is a biconvex lens, L23Is a cemented lens group composed of a biconvex lens and a biconcave lens arranged in sequence from an object plane to an image plane, L24Is a cemented lens group composed of a biconcave lens and a biconvex lens arranged in sequence from an object plane to an image plane, L25Is a negative meniscus lens, L26The arrow in FIG. 9 indicates the second lens group G as a biconvex lens2To focus the group, the focus is moved along the optical axis. And satisfy | F1/F2|＝2.84，f/F1＝-0.26，|F11/F1The parameter of the lens satisfies | ═ 4.21: f is 25.97, Fno is 4.0, and 2 θ is 40.7 °.
The optical data parameters of each lens in the lens barrel of the embodiment are as follows.
In the above table, surface number SiIn the column, 0 denotes an object plane, 23 denotes an image plane, i.e., IMG denotes an image plane, and surface numbers 1 to 22 denote the surfaces of each lens, aperture stop, and cover glass from the object plane to the image plane in this order, and it should be noted that the cemented surfaces of different lenses in the cemented lens group denote the same surface.
The focusing data parameters of the present embodiment are as follows.
| D(0) | 300 | 800 | 150 |
| RED | 0.08 | 0.03 | 0.17 |
| f | 25.97 | 25.68 | 26.47 |
| D(1) | 2.70 | 4.18 | 0.25 |
| D(2) | 18.37 | 16.90 | 20.83 |
Fig. 10-12 show MTF graphs of the lens of this embodiment at different working distances of 300mm, 800mm, and 150mm, respectively, from which it can be obtained that the lens of this embodiment can realize high-quality imaging in a wide working distance range, and meet the requirements of high pixel, large target surface, and low distortion.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express the more specific and detailed embodiments described in the present application, but not be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a wide working distance high definition industrial lens of big target surface which characterized in that: the large-target-surface wide-working-distance high-definition industrial lens comprises a first lens group G with negative focal power, which is sequentially arranged from an object surface to an image surface1And a second lens group G having positive refractive power2When focusing, the first lens group G1Fixed relative to the image plane, the second lens group G2Moving along the optical axis;
the large-target-surface wide-working-distance high-definition industrial lens further meets the following conditions:
2.0≤|F1/F2|≤6.0
-0.3≤f/F1≤0.1
wherein, F1Is the first lens group G1Focal length of (D), F2Is the second lens group G2F is the focal length of the optical system.
2. The large-target-surface wide-working-distance high-definition industrial lens as claimed in claim 1, characterized in that: the first lens group G1Comprising an optical element L having a negative optical power11Said optical element L11Is a first lens close to the object plane and satisfies the following conditions:
3.0≤|F11/F1|≤25
wherein, F11Is the optical element L11The focal length of (c).
3. The large-target-surface wide-working-distance high-definition industrial lens as claimed in claim 2, characterized in that: the first lens group G1Further comprises an optical element L12SaidOptical element L12Is a single lens or a cemented lens group and is arranged on the optical element L11On the image plane side.
4. The large-target-surface wide-working-distance high-definition industrial lens as claimed in claim 3, wherein: the first lens group G1Further comprises an optical element L13Said optical element L13Is a single lens or a cemented lens group and is arranged on the optical element L12On the image plane side.
5. The large-target-surface wide-working-distance high-definition industrial lens as claimed in any one of claims 2 to 4, wherein: the optical element L11The following conditions are satisfied:
1.90≤nd≤1.98
wherein n isdIs the refractive index under d-line.
6. The large-target-surface wide-working-distance high-definition industrial lens as claimed in claim 1, characterized in that: the second lens group G2The focusing lens comprises a front lens group GF, an aperture diaphragm ST and a rear lens group GB which are sequentially arranged from an object plane to an image plane, wherein the front lens group GF, the aperture diaphragm ST and the rear lens group GB synchronously move along an optical axis during focusing.
7. The large-target-surface wide-working-distance high-definition industrial lens as claimed in claim 6, wherein: the rear lens group GB comprises optical elements L which are sequentially arranged from an object plane to an image plane24Optical element L25And an optical element L26Said optical element L24Being a cemented lens group, said optical element L25Is a single lens with positive or negative optical power, the optical element L26Is a biconvex lens with positive optical power.
8. The large-target-surface wide-working-distance high-definition industrial lens as claimed in claim 7, wherein: the front lens group GF includes optical elements L arranged in order from an object plane to an image plane21And an optical elementL22Said optical element L21Being a biconvex positive lens, said optical element L22Is a single lens or a cemented lens group.
9. The large-target-surface wide-working-distance high-definition industrial lens as claimed in claim 8, wherein: the front lens group GF further comprises an optical element L23Said optical element L23Is a single lens or a cemented lens group and is arranged on the optical element L22On the image plane side.
10. The large-target-surface wide-working-distance high-definition industrial lens as claimed in claim 1, characterized in that: the large-target-surface wide-working-distance high-definition industrial lens further comprises image surface protection glass CG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120012611.3U CN213934373U (en) | 2021-01-05 | 2021-01-05 | Large-target-surface wide-working-distance high-definition industrial lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120012611.3U CN213934373U (en) | 2021-01-05 | 2021-01-05 | Large-target-surface wide-working-distance high-definition industrial lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213934373U true CN213934373U (en) | 2021-08-10 |
Family
ID=77157298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120012611.3U Active CN213934373U (en) | 2021-01-05 | 2021-01-05 | Large-target-surface wide-working-distance high-definition industrial lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213934373U (en) |
-
2021
- 2021-01-05 CN CN202120012611.3U patent/CN213934373U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107976787B (en) | Optical imaging lens | |
| CN108828751B (en) | Image capturing lens assembly and image capturing device | |
| CN107065140B (en) | Intelligent vehicle-mounted high-pixel wide-angle lens | |
| CN105334598B (en) | A kind of optical lens | |
| CN110261999B (en) | Optical system and imaging lens | |
| CN114488479B (en) | Industrial lens with large view field and high resolution front diaphragm | |
| CN111722378B (en) | Large-image-surface high-resolution fish-eye lens | |
| CN108873269B (en) | Image capturing lens assembly and image capturing device | |
| CN106896480A (en) | A kind of projector's telecentricity zoom lens | |
| CN111273428A (en) | Large-target-surface high-precision industrial fixed-focus lens | |
| CN205067847U (en) | Optical lens | |
| CN112731639A (en) | Large-target-surface large-visual-angle machine vision lens | |
| CN112269254A (en) | Imaging lens | |
| CN111856727A (en) | Large-aperture ultra-wide-angle high-definition lens and camera equipment comprising same | |
| CN112612131A (en) | Large-target-surface wide-working-distance high-definition industrial lens | |
| CN108333724B (en) | Fixed focus lens | |
| CN217587742U (en) | Optical lens | |
| CN216434520U (en) | High-pixel large-target-surface wide-angle lens | |
| CN213934373U (en) | Large-target-surface wide-working-distance high-definition industrial lens | |
| CN212321968U (en) | Large-image-plane high-resolution fisheye lens | |
| CN214151202U (en) | Optical imaging lens matched with liquid lens | |
| CN213903941U (en) | Super large wide angle high definition optical lens | |
| CN214151204U (en) | Optical imaging lens with large image surface | |
| CN212255853U (en) | Interior high definition camera lens of focusing | |
| CN212181145U (en) | Optical system of projection lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |