CN206331171U - A kind of lens combination and tight shot - Google Patents
A kind of lens combination and tight shot Download PDFInfo
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- CN206331171U CN206331171U CN201621335013.5U CN201621335013U CN206331171U CN 206331171 U CN206331171 U CN 206331171U CN 201621335013 U CN201621335013 U CN 201621335013U CN 206331171 U CN206331171 U CN 206331171U
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Abstract
The utility model embodiment discloses a kind of lens combination and tight shot.The lens combination includes：It is the first positive lens group along the focal power that optical axis is set gradually from the object side to image side, aperture diaphragm, focal power is the second positive lens group；Wherein, first lens group, including：It is the first negative lens along the focal power that optical axis is set gradually from the object side to image side, focal power is the second negative lens, and focal power is the first positive sub-lens group, and focal power is the second positive sub-lens group；Second lens group, including：It is the 3rd negative sub-lens group along the focal power that optical axis is set gradually from the object side to image side, focal power is the 4th positive sub-lens group.In the program, under the structure of each lens and lens group, focal power, focal length, the cooperation that puts in order, super large thang-kng, high-resolution more than 5,000,000 pixels can be realized, and under low-light (level) environment, all-weather colorful video monitoring can also be realized without infrared light filling.
Description
Technical field
The utility model is related to optical instrument field, more particularly to a kind of lens combination and tight shot.
Background technology
In safety-protection system, to the requirement more and more higher of the quality of the camera lens for monitoring, but camera lenses many at present
The spectrophotometric data of product is relatively low, it is difficult to meet the demands such as big thang-kng and high-resolution.At present, the resolution ratio of most of camera lenses
It is only capable of meeting the demand of the following video camera of 3,000,000 pixels, it is impossible to meet the superelevation of the higher pixels such as 4,000,000 pixels, 5,000,000 pixels
The demand of clear video camera, and, it is necessary to could blur-free imaging by infrared light filling in the environment of night low-illumination.
Utility model content
The purpose of the utility model embodiment is to provide a kind of lens combination and tight shot, for realizing big thang-kng, height
Imaging under resolution ratio and low-light (level) environment without infrared light filling.
The purpose of the utility model embodiment is achieved through the following technical solutions：
A kind of lens combination, including：It is the first positive lens group along the focal power that optical axis is set gradually from the object side to image side,
Aperture diaphragm, focal power is the second positive lens group；
Wherein, first lens group, including：It is negative first along the focal power that optical axis is set gradually from the object side to image side
Lens, focal power is the second negative lens, and focal power is the first positive sub-lens group, and focal power is the second positive sub-lens group；
Wherein, first lens are the meniscus lens convex surface facing thing side, and second lens are biconcave lens；
Second lens group, including：The focal power set gradually from the object side to image side along optical axis is saturating for the 3rd negative son
Microscope group, focal power is the 4th positive sub-lens group；
Also, each lens and the focal length of lens group meet following condition：
4.32≤f1/f’≤5.32；0.22≤f1/f2≤0.62；
-2.66≤f11/f’≤-2.12；-2.15≤f12/f’≤-1.64；3.30≤f13/f’≤4.86；1.98≤f14/
f’≤2.78；
-7.88≤f21/f’≤-3.55；1.71≤f22/f’≤1.95；
Wherein, f1Represent the focal length of first lens group；f2Represent the focal length of second lens group；F ' represents described
The focal length of lens combination；f11Represent the focal length of first lens；f12Represent the focal length of second lens；f13Represent described
The focal length of first sub-lens group；f14Represent the focal length of the second sub-lens group；f21Represent Jiao of the 3rd sub-lens group
Away from；f22Represent the focal length of the 4th sub-lens group.
It is preferred that it is the 3rd positive lens that the first sub-lens group, which includes focal power,；3rd lens are lenticular
Mirror, the meniscus lens convex surface facing image side or the planoconvex spotlight convex surface facing image side.
It is preferred that it is the 4th positive lens that the second sub-lens group, which includes focal power,；4th lens are lenticular
Mirror or planoconvex spotlight.
It is preferred that the 3rd sub-lens group is negative the 5th lens including focal power and focal power is that positive the 6th is saturating
Mirror；
Wherein, the 5th lens are biconcave lens, and the 6th lens are biconvex lens；Or, the described 5th
Lens are plano-concave lens of the concave surface towards image side, and the 6th lens are biconvex lens.
It is preferred that the 5th lens are towards the surface of image side and the curvature one on surface of the 6th lens towards thing side
Cause.
It is preferred that the 5th lens are glued with the 6th lens.
It is preferred that the Abbe number V of the glass material of the 6th lensd1Meet condition：Vd1≥80。
It is preferred that the refractive index N of the glass material of the 5th lensdMeet condition：Nd≥1.73。
It is preferred that it is the 7th positive lens that the 4th sub-lens group, which includes focal power, focal power is the 8th positive lens；
Wherein, the 7th lens are biconvex lens or the planoconvex spotlight convex surface facing image side；8th lens be biconvex lens,
Convex surface facing the planoconvex spotlight or the meniscus lens convex surface facing thing side of thing side；
Or, the 4th sub-lens group be positive the 7th lens including focal power and focal power be the 8th positive lens and
Focal power is the 9th positive lens；Wherein, the 7th lens, the 8th lens are biconvex lens；9th lens are convex
Facing to the meniscus lens of thing side.
It is preferred that the Abbe number V of the glass material of the 8th lensd2Meet condition：Vd2≥80。
A kind of tight shot, including the lens combination as described in any of the above.
The utility model embodiment has the beneficial effect that：
In lens combination and tight shot that the utility model embodiment is provided, structure, light in each lens and lens group
Under focal power, focal length, the cooperation put in order, it is possible to achieve high-resolution more than super large thang-kng, 5,000,000 pixels, and low
Under illumination environment, all-weather colorful video monitoring can also be realized without infrared light filling.
Brief description of the drawings
The structural representation for the first lens combination that Fig. 1 a provide for the utility model embodiment；
The structural representation for second of lens combination that Fig. 1 b provide for the utility model embodiment；
The structural representation for the third lens combination that Fig. 1 c provide for the utility model embodiment；
The structural representation for the 4th kind of lens combination that Fig. 1 d provide for the utility model embodiment；
The MTF curve figure for the visible light wave range that Fig. 2 provides for the utility model embodiment；
Fig. 3 is the curvature of field figure of the utility model embodiment visible light wave range；
Fig. 4 is the axial chromatic aberration curve map of the utility model embodiment visible light wave range；
Fig. 5 is the chromatic longitudiinal aberration curve map of the utility model embodiment visible light wave range.
Embodiment
In order to realize the imaging under big thang-kng, high-resolution and low-light (level) environment without infrared light filling, the utility model is real
Apply example and a kind of lens combination is provided, including：It is the first positive lens group along the focal power that optical axis is set gradually from the object side to image side,
Aperture diaphragm, focal power is the second positive lens group；
Wherein, the first lens group, including：It is that negative first is saturating along the focal power that optical axis is set gradually from the object side to image side
Mirror, focal power is the second negative lens, and focal power is the first positive sub-lens group, and focal power is the second positive sub-lens group；Its
In, the first lens are the meniscus lens convex surface facing thing side, and the second lens are biconcave lens；
Second lens group, including：It is the 3rd negative sub-lens group along the focal power that optical axis is set gradually from the object side to image side,
Focal power is the 4th positive sub-lens group；Also, each lens and the focal length of lens group meet following condition：
4.32≤f1/f’≤5.32；
0.22≤f1/f2≤0.62；
-2.66≤f11/f’≤-2.12；
-2.15≤f12/f’≤-1.64；
3.30≤f13/f’≤4.86；
1.98≤f14/f’≤2.78；
-7.88≤f21/f’≤-3.55；
1.71≤f22/f’≤1.95；
Wherein, f1Represent the focal length of the first lens group；f2Represent the focal length of the second lens group；F ' represents Jiao of lens combination
Away from；f11Represent the focal length of the first lens；f12Represent the focal length of the second lens；f13Represent the focal length of the first sub-lens group；f14Represent
The focal length of second sub-lens group；f21Represent the focal length of the 3rd sub-lens group；f22Represent the focal length of the 4th sub-lens group.
In the utility model embodiment, in the structure of each lens and lens group, focal power, focal length, the cooperation put in order
Under, it is possible to achieve high-resolution more than super large thang-kng, 5,000,000 pixels, and under low-light (level) environment, without infrared light filling
All-weather colorful video monitoring can be realized.
On the basis of the parameter request of above optical system is met, the structure of each lens group can be had as needed
The adjustment of body.The concrete structure of some of which lens group is illustrated below.
In above example, the concrete structure of the first sub-lens group has a variety of, it is preferred that the first sub-lens group includes light Jiao
Spend for the 3rd positive lens；3rd lens are biconvex lens, convex surface facing the meniscus lens of image side or convex surface facing image side
Planoconvex spotlight.
In above related embodiment, the concrete structure of the second sub-lens group has a variety of, it is preferred that the second sub-lens group includes
Focal power is the 4th positive lens；4th lens are biconvex lens or planoconvex spotlight.Wherein, planoconvex spotlight convex surface facing picture
Side or towards thing side.
In above related embodiment, the concrete structure of the 3rd sub-lens group has a variety of, it is preferred that the 3rd sub-lens group includes
Focal power is negative the 5th lens and focal power is the 6th positive lens；In a kind of structure of possible 3rd sub-lens group,
5th lens are biconcave lens, and the 6th lens are biconvex lens；In the structure of the 3rd alternatively possible sub-lens, the
Five lens are plano-concave lens of the concave surface towards image side, and the 6th lens are biconvex lens.
Wherein, surface curvature with sixth lens towards the surface of thing side of the 5th lens towards image side is consistent.Based on this,
It is preferred that the 5th lens and the 6th lens are glued.Two lens are glued together, are conducive to color difference eliminating.
Wherein, the Abbe number V of the glass material of the 6th lensd1Meet condition：Vd1≥80.In the present embodiment, the 6th lens
Material Abbe number it is larger, belong to the low chromatic dispersion material of low-refraction, the value of chromatism of generation is small, and generally positive aberration,
The negative aberration produced by the big eyeglass of other aberration can be flexibly compensated simultaneously, therefore, aberration pair is reduced beneficial to further
The influence of imaging.
Wherein, the refractive index N of the glass material of above-mentioned 5th lensdMeet condition：Nd≥1.73.In the present embodiment, the 5th
The glass material of lens is high-refraction high-dispersion material, and the turnover ability to light is strong, is conducive to the aperture of increase system, improves
In brightness, and above-described embodiment the glass material of the 6th lens be low dispersion low-index material, the two cooperation, contribute into
One step eliminates system aberration.
Wherein, refractive index NdIt is the refractive index of the material obtained by d flash rangings, Abbe number VdIt is the folding of the material obtained according to d flash rangings
The Abbe number that the rate of penetrating is obtained.
In above related embodiment, the concrete structure of the 4th sub-lens group has a variety of, it is preferred that in a kind of possible structure
In, the 4th sub-lens group is positive the 7th lens including focal power and focal power is the 8th positive lens；Wherein, the 7th lens are
Biconvex lens or the planoconvex spotlight convex surface facing image side；8th lens are biconvex lens, the planoconvex spotlight convex surface facing thing side
Or convex surface facing the meniscus lens of thing side.In alternatively possible structure, it is positive that the 4th sub-lens group, which includes focal power,
7th lens, focal power is positive the 8th lens and focal power is the 9th positive lens；Wherein, the 7th lens, the 8th lens are equal
For biconvex lens；9th lens are the meniscus lens convex surface facing thing side.In the former structure enumerated, by two lens structures
Into the 4th sub-lens group, required lens numbers are relatively fewer, simple in construction.
Wherein, the Abbe number V of the glass material of the 8th lensd2Meet condition：Vd2≥80.In the present embodiment, the 8th lens
Glass material Abbe number it is larger, also beneficial to the further influence for reducing aberration to imaging.
Based on any of the above embodiment, set successively it is preferred that said lens system is removed from the object side to image side along optical axis direction
The first lens group for putting, aperture diaphragm, outside the second lens group, be additionally provided with optical filter, imaging surface (the Image surface,
IMA).Wherein, the setting of optical filter, can prevent that the infrared light in sunshine from causing colour cast into lens combination, especially right
In charge coupling device (Charge Coupled Device, CCD) or CMOS complementary metal-oxide-semiconductor
It is to experience for imaging sensor as (Complementary Metal-Oxide Semiconductor, CMOS)
Infrared light, in the present embodiment, the generation of this problem can be avoided.
The scheme that the utility model is provided is described in more detail below in conjunction with the accompanying drawings.
As shown in Figure 1a, the lens combination that the present embodiment is provided, including along optical axis (in figure shown in dotted line) from thing side to picture
The focal power that side is set gradually is the first positive lens group 1, and aperture diaphragm (Stop, STO) 3, focal power is the second positive lens
Group 2；
Wherein, the first lens group 1, including：It is that negative first is saturating along the focal power that optical axis is set gradually from the object side to image side
Mirror 11, focal power is the second negative lens 12, and focal power is the 3rd positive lens 13, and focal power is the 4th positive lens 14；The
Two lens groups 2, including：It is the 5th negative lens 21 along the focal power that optical axis is set gradually from the object side to image side, focal power is just
The 6th lens 22, focal power is the 7th positive lens 23, and focal power is positive the 8th lens 24 and focal power is positive the 9
Lens 25.
Wherein, the first lens 11 are the meniscus lens convex surface facing thing side；Second lens 12 are biconcave lens；3rd lens
13 be the meniscus lens convex surface facing image side；4th lens 14 are biconvex lens；5th lens 21 are biconcave lens；6th lens
22 be biconvex lens；7th lens 23 are biconvex lens；8th lens 24 are biconvex lens；9th lens 25 are convex surface facing thing
The meniscus lens of side.
Wherein, the 3rd lens 13 are above-mentioned first sub-lens group.
Wherein, the 4th lens 14 are above-mentioned second sub-lens group.
Wherein, the 5th lens 21 and the 6th lens 22 constitute above-mentioned 3rd sub-lens group, the 5th lens 21 and the 6th lens
22 is glued.The Abbe number V of the glass material of 6th lensd1Meet condition：Vd1≥80；The refraction of the glass material of 5th lens
Rate NdMeet condition：Nd≥1.73。
Wherein, the 7th lens 23, the 8th lens 24 and the 9th lens 25 constitute above-mentioned 4th sub-lens group.8th lens
The Abbe number V of glass materiald2Meet condition：Vd2≥80。
Wherein, each lens and the focal length of lens group meet the focus condition listed by above related embodiment.
In addition, as shown in Figure 1a, optical filter 4 and IMA5 are additionally provided with along optical axis image side.
As shown in Figure 1 b, based on the structure shown in Fig. 1 a, the 3rd lens 13 can also be that the plano-convex convex surface facing image side is saturating
Mirror.
As illustrated in figure 1 c, the 4th lens 14 can also be the planoconvex spotlight convex surface facing image side.
As shown in Figure 1 d, the 5th lens 21 can also be biconcave lens.
It is only the structure that wherein several lens combinations are listed with reference to accompanying drawing above, can also be to each lens in implementation
And lens combination carries out that setting is adjusted flexibly, as long as meeting demand of the above lens combination to optical parametrics such as focal power, focal lengths
.
Conceived based on same utility model, the utility model embodiment also provides a kind of tight shot, including as more than
Lens combination described in any embodiment.
Below by taking the lens combination shown in Fig. 1 a as an example, the tight shot in practical application scene is illustrated.This is saturating
The parameter of the minute surface of each lens includes the refractive index N of radius of curvature R, optical glass material relative to d light in mirror systemd, light
Learn Abbe number V of the glass material relative to d lightd, and center thickness Tc(i.e. the distance of adjacent mirror facets central point), along optical axis from
Each minute surface of thing side to image side meets the scope listed by table 1：
Table 1
Wherein, minute surface 1 and two minute surfaces that minute surface 2 is the first lens 11, minute surface 3 and minute surface 4 are the two of the second lens 12
Individual minute surface, minute surface 5 and minute surface 6 are two minute surfaces of the 3rd lens 13, and minute surface 7 and minute surface 8 are two minute surfaces of the 4th lens 14,
Minute surface 10 and two minute surfaces that minute surface 11 is the 5th lens 21, minute surface 12 and two minute surfaces that minute surface 13 is the 6th lens 22, mirror
Face 14 and two minute surfaces that minute surface 15 is the 7th lens 23, minute surface 16 and two minute surfaces that minute surface 17 is the 8th lens 24, minute surface
19 and minute surface 20 be the 9th lens 25 two minute surfaces.With reference to the parameter area shown in upper table 2, specifically joined with one group
Exemplified by number, referring to table 2, the lens combination that the present embodiment is provided is illustrated.
Table 2
The camera lens that the present embodiment is provided has following optical technology index：
Optics overall length TLT：32mm；
Lens focus f '：4mm；
The angle of visual field of camera lens：105°；
The distortion of camera lens：- 21%；
The aperture (F/#) of lens system：0.95；
Camera lens image planes size：1/2.7〞.
Below by optical analysis, the effect that above lens combination and camera lens are reached is illustrated.
Optical transfer function be for evaluating more accurate, the directly perceived and common mode of the image quality of an optical system,
Its curve is higher, more smooth, shows that the image quality of system is better, to various aberrations (such as：Spherical aberration, coma, astigmatism, the curvature of field, axle
To aberration, chromatic longitudiinal aberration etc.) carry out good correction.As shown in Fig. 2 for tight shot visible light wave range optical delivery
Function (Modulation Transfer Function, MTF) curve map, as can be known from Fig. 2, the tight shot visible light wave range
MTF curve figure it is smoother, concentrate, and full filed MTF average values reach more than 0.7, it is seen that what the present embodiment was provided focuses
Camera lens and camera lens, can reach very high resolution ratio, meet the imaging requirements of 4,000,000 and 5,000,000 pixel camera machines.
Fig. 3 is the corresponding curvature of field figure of tight shot visible light wave range, is made up of three curve T and three curve S；Wherein,
Three curve T represent the corresponding meridional beam (Tangential Rays) of three kinds of wavelength (486nm, 587nm and 656nm) respectively
Aberration, three curve S represent the corresponding sagittal beam (Sagittial of three kinds of wavelength (486nm, 587nm and 656nm) respectively
Rays aberration), meridianal curvature of field value and Sagittal field curvature value are smaller, illustrate that image quality is better；In Fig. 3, the control of meridianal curvature of field value
In the range of -0.005~0.025mm, Sagittal field curvature value is controlled within -0.015~0.025mm scopes, and image quality is preferable.
Fig. 4 is the corresponding axial chromatic aberration curve map of tight shot visible light wave range, and curve change near y-axis in figure, is got over
Close to y-axis, illustrate that tight shot image quality is better, in Fig. 4, its axial chromatic aberration is controlled between -0.01~+0.025mm.
Fig. 5 is the corresponding chromatic longitudiinal aberration curve map of tight shot visible light wave range, and curve illustrate calmly closer to y-axis in figure
Zoom lens image quality is better, in Fig. 5, and its chromatic longitudiinal aberration is controlled between -0.0005~+0.0015mm.
In the present embodiment, using the lens of nine specific structure shapes, and according to particular order from thing side to image side successively
Arrangement, and focal power by each lens or lens group, the distribution of focal length, while using being adapted optical glass material,
So that the structure type of tight shot, the parameter such as refractive index, Abbe number of lens is matched with image-forming condition, and then makes tight shot
Spherical aberration, coma, astigmatism, the curvature of field, chromatic longitudiinal aberration, axial chromatic aberration corrected well so that reach bigger aperture, it is higher
Resolution ratio (highest support 5,000,000 pixel camera machines), and then the imaging performance under more preferably low photograph environment is realized, without carrying out
Infrared light filling, can also carry out blur-free imaging；All lens use glass spherical design, and cold machining process is functional, raw
Produce low cost；Protection and monitor field can be widely applied to, realizes that the round-the-clock colour painting face of ultra high-definition is shown.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if it is of the present utility model these modification and modification belong to the utility model claim and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (11)
1. a kind of lens combination, it is characterised in that including：The focal power set gradually from the object side to image side along optical axis is positive the
One lens group, aperture diaphragm, focal power is the second positive lens group；
Wherein, first lens group, including：It is that negative first is saturating along the focal power that optical axis is set gradually from the object side to image side
Mirror, focal power is the second negative lens, and focal power is the first positive sub-lens group, and focal power is the second positive sub-lens group；Its
In, first lens are the meniscus lens convex surface facing thing side, and second lens are biconcave lens；
Second lens group, including：It is the 3rd negative sub-lens group along the focal power that optical axis is set gradually from the object side to image side,
Focal power is the 4th positive sub-lens group；
Also, each lens and the focal length of lens group meet following condition：
4.32≤f1/f’≤5.32；0.22≤f1/f2≤0.62；
-2.66≤f11/f’≤-2.12；-2.15≤f12/f’≤-1.64；3.30≤f13/f’≤4.86；1.98≤f14/f’≤
2.78；
-7.88≤f21/f’≤-3.55；1.71≤f22/f’≤1.95；
Wherein, f1Represent the focal length of first lens group；f2Represent the focal length of second lens group；F ' represents the lens
The focal length of system；f11Represent the focal length of first lens；f12Represent the focal length of second lens；f13Represent described first
The focal length of sub-lens group；f14Represent the focal length of the second sub-lens group；f21Represent the focal length of the 3rd sub-lens group；f22
Represent the focal length of the 4th sub-lens group.
2. lens combination according to claim 1, it is characterised in that it is positive that the first sub-lens group, which includes focal power,
3rd lens；3rd lens are biconvex lens, the meniscus lens convex surface facing image side or the plano-convex convex surface facing image side
Lens.
3. lens combination according to claim 1, it is characterised in that it is positive that the second sub-lens group, which includes focal power,
4th lens；4th lens are biconvex lens or planoconvex spotlight.
4. lens combination according to claim 1, it is characterised in that the 3rd sub-lens group includes focal power to bear
5th lens and focal power are the 6th positive lens；
Wherein, the 5th lens are biconcave lens, and the 6th lens are biconvex lens；Or, the 5th lens
For concave surface towards image side plano-concave lens, and the 6th lens be biconvex lens.
5. lens combination according to claim 4, it is characterised in that the 5th lens towards image side surface with it is described
Curvature of 6th lens towards the surface of thing side is consistent.
6. lens combination according to claim 5, it is characterised in that the 5th lens are glued with the 6th lens.
7. lens combination according to claim 6, it is characterised in that the Abbe number V of the glass material of the 6th lensd1
Meet condition：Vd1≥80。
8. lens combination according to claim 7, it is characterised in that the refractive index N of the glass material of the 5th lensd
Meet condition：Nd≥1.73。
9. lens combination according to claim 1, it is characterised in that it is positive that the 4th sub-lens group, which includes focal power,
7th lens and focal power are the 8th positive lens；Wherein, the 7th lens are biconvex lens or convex surface facing image side
Planoconvex spotlight；8th lens are biconvex lens, planoconvex spotlight or the bent moon convex surface facing thing side convex surface facing thing side
Lens；
Or, it is the 7th positive lens that the 4th sub-lens group, which includes focal power, and focal power is that the 8th positive lens and light are burnt
Spend for the 9th positive lens；Wherein, the 7th lens, the 8th lens are biconvex lens；9th lens are convex surface court
To the meniscus lens of thing side.
10. lens combination according to claim 9, it is characterised in that the Abbe number of the glass material of the 8th lens
Vd2Meet condition：Vd2≥80。
11. a kind of tight shot, it is characterised in that including the lens combination as described in any one of claim 1~10.
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| CN201621335013.5U CN206331171U (en) | 2016-12-07 | 2016-12-07 | A kind of lens combination and tight shot |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772935A (en) * | 2016-12-07 | 2017-05-31 | 浙江大华技术股份有限公司 | A kind of lens combination and tight shot |
| CN110007433A (en) * | 2019-03-15 | 2019-07-12 | 广东奥普特科技股份有限公司 | A kind of fixed-focus line sweeps camera lens |
-
2016
- 2016-12-07 CN CN201621335013.5U patent/CN206331171U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772935A (en) * | 2016-12-07 | 2017-05-31 | 浙江大华技术股份有限公司 | A kind of lens combination and tight shot |
| CN110007433A (en) * | 2019-03-15 | 2019-07-12 | 广东奥普特科技股份有限公司 | A kind of fixed-focus line sweeps camera lens |
| CN110007433B (en) * | 2019-03-15 | 2024-03-26 | 广东奥普特科技股份有限公司 | Fixed focal line scanning lens |
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Granted publication date: 20170714 Termination date: 20211207 |