CN209433110U - A kind of infrared confocal wide-angle lens - Google Patents
A kind of infrared confocal wide-angle lens Download PDFInfo
- Publication number
- CN209433110U CN209433110U CN201920167475.8U CN201920167475U CN209433110U CN 209433110 U CN209433110 U CN 209433110U CN 201920167475 U CN201920167475 U CN 201920167475U CN 209433110 U CN209433110 U CN 209433110U
- Authority
- CN
- China
- Prior art keywords
- lens
- object side
- image side
- focal length
- angle
- 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
Abstract
The utility model discloses a kind of infrared confocal wide-angle lens, the main points of its technical scheme are that being disposed with the first lens, diaphragm, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, optical filter, protection glass, sensitive chip from object side to image side.By reasonably distributing the glass material of focal power and the different abbe numbers of selection the target of the high pixel of the wide-angle optics may be implemented, and can preferably realize infrared confocal in the concave, convex spherical surface composite structure that each lens of the utility model use.The utility model selects the structure type of six sheet glass spheric glasses, and by rationally controlling each lens thickness and airspace distance, the material of simultaneous selection appropriate index obtains higher relative illumination while reducing high/low temperature drift value.
Description
[technical field]
The utility model relates to a kind of infrared confocal wide-angle lens.
[background technique]
Wide-angle lens used in current vehicle-mounted and monitoring trade, can only generally be obtained in 400~700nm wave-length coverage compared with
Good imaging effect is not able to satisfy the fine definition requirement of night even on daytime, and clarity degradation under high and low temperature environment, temperature
Degree drift is big, and imaging picture periphery brightness is not big enough, and relative illumination is low.
The utility model is namely based on what such case was made.
[utility model content]
The utility model aim is to overcome the deficiencies in the prior art, provides a kind of infrared confocal wide-angle lens.
The utility model is achieved through the following technical solutions:
A kind of infrared confocal wide-angle lens, it is characterised in that: the first lens 1, diaphragm are disposed with from object side to image side
2, the second lens 3, the third lens 4, the 4th lens 5, the 5th lens 6, the 6th lens 7, optical filter 8, protection glass 9, photosensitive core
Piece 10；
Each lens have object side and an image side surface, respectively the first lens object side S1, the first lens image side surface S2,
Second lens object side S3, the second lens image side surface S4, the third lens object side S5, the third lens image side surface S6, the 4th lens
Object side S7, the 4th lens image side surface S8, the 5th lens object side S9, the 5th lens image side surface S10, the 6th lens object side
S11, the 6th lens image side surface S12；
First lens object side S1 is convex surface, and the first lens image side surface S2 is concave surface, and the focal length of first lens 1 is
It is negative；
Second lens object side S3 is convex surface, and the second lens image side surface S4 is concave surface, and the focal length of second lens 3 is
Just；
The third lens object side S5 is concave surface, and the third lens image side surface S6 is convex surface, and the focal length of the third lens 4 is
Just；
4th lens object side S7 is concave surface, and the 4th lens image side surface S8 is convex surface, and the focal length of the 4th lens 5 is
Just；
5th lens object side S9 is concave surface, and the 4th lens image side surface S10 is convex surface, and the focal length of the 5th lens 6 is
It is negative；
6th lens object side S11 and the 6th lens image side surface S12 is convex surface, and the focal length of the 6th lens 7 is positive.
Infrared confocal wide-angle lens as described above, it is characterised in that the infrared confocal wide-angle lens meets following relationship
Formula:
- 1.5 < f1/f3< -0.5；
0.8 < f2/ TTL < 1.4；
- 1.5 < f4/f5< -0.5；
3 < f6/ f < 5；
3 < TTL/f < 7；
Wherein, f is the focal length of camera lens, f1For the focal length of the first lens 1, f2For the focal length of the second lens 3, f3It is saturating for third
The focal length of mirror 4, f4For the focal length of the 4th lens 5, f5For the focal length of the 5th lens 6, f6For the focal length of six lens 7, TTL is red is somebody's turn to do
The overall length of outer confocal wide-angle lens.
Infrared confocal wide-angle lens as described above, it is characterised in that: first lens 1, the second lens 3, third are saturating
Mirror 4, the 4th lens 5, the 5th lens 6, six lens 7 are glass spherical lens.
Infrared confocal wide-angle lens as described above, it is characterised in that: the infrared confocal wide-angle lens meets following relationship
Formula:
Nd1≤ 1.7, Nd2>=1.8, Nd3≥1.8；
Nd5- Nd4≥0.25；
Nd6≥1.6；
Wherein, Nd1For the refractive index of the first lens 1, Nd2For the refractive index of the second lens 3, Nd3For the folding of the third lens 4
Penetrate rate, Nd4For the refractive index of the 4th lens 5, Nd5For the refractive index of the 5th lens 6, Nd6For the refractive index of six lens 7.
Infrared confocal wide-angle lens as described above, it is characterised in that: the infrared confocal wide-angle lens meets with ShiShimonoseki
It is formula:
lens1> 50, lens2< 50, lens3< 50；
lens4- lens5≥25；
40≤lens6≤60；
Wherein, lens1For the abbe number of the first lens 1, lens2For the abbe number of the second lens 3, lens3For third
The abbe number of lens 4, lens4For the abbe number of the 4th lens 5, lens5For the abbe number of the 5th lens 6, lens6For
The abbe number of six lens 7.
Infrared confocal wide-angle lens as described above, it is characterised in that: the infrared confocal wide-angle lens meets following relationship
Formula:
A12+A23+A34+A56/ TTL < 0.2；
0.3 < T1+T2+T3+T4+T5+T6/ TTL < 0.6；
0.25 < BF/TTL < 0.5；
Wherein, A12For the airspace distance between the first lens 1 and the second lens 3, A23For the second lens 3 and third
Airspace distance between lens 4, A34For the airspace distance between the third lens 4 and the 4th lens 5, A56It is the 5th
Airspace distance between lens 6 and six lens 7, airspace distance of the BF between six lens 7 and sensitive chip 10, T1
For the center thickness of the first lens 1, T2For the center thickness of the second lens 3, T3For the center thickness of the third lens 4, T4It is the 4th
The center thickness of lens 5, T5For the center thickness of the 5th lens 6, T6For the center thickness of six lens 7, TTL is the overall length of camera lens.
Compared with prior art, the utility model has the following advantages:
1, the concave, convex spherical surface composite structure that each lens of the utility model use, by reasonably distributing focal power and choosing
The glass material for selecting different abbe numbers may be implemented the target of the high pixel of the wide-angle optics, and can preferably realize red
Outer confocal, the visible light wave range used of the utility model embodiment is 435~656nm, and infrared band is 900~980nm.
2, the utility model selects the structure type of six sheet glass spheric glasses, by rationally controlling each lens thickness and sky
Gas spacing distance, the material of simultaneous selection appropriate index while reducing high/low temperature drift value, obtain higher contrast
Degree.
3, the wide-angle lens of the utility model have the characteristics that pixel it is high, it is infrared it is confocal, temperature drift is small, illumination is high, be suitble to push away
Wide application.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the MTF curve figure of visible waveband at normal temperature in the utility model embodiment；
Fig. 3 is the MTF curve figure of infrared band at normal temperature in the utility model embodiment；
Fig. 4 is the overfocus curve graph of visible waveband at normal temperature in the utility model embodiment；
Fig. 5 is the overfocus curve graph of infrared band at normal temperature in the utility model embodiment；
Fig. 6 is the overfocus curve graph in the utility model embodiment in -40 DEG C of visible wavebands of low temperature；
Fig. 7 is the overfocus curve graph in the utility model embodiment in+85 DEG C of visible wavebands of high temperature；
Fig. 8 is the relative illumination curve in the utility model embodiment.
In figure: 1 is the first lens；2 be diaphragm；3 be the second lens；4 be the third lens；5 be the 4th lens；6 be the 5th
Lens；7 be the 6th lens；8 be optical filter；9 be protection glass；10 be sensitive chip；S1 is the first lens object side；S2 is
One lens image side surface, S3 are the second lens object side, S4 is the second lens image side surface, S5 is the third lens object side, S6
Three lens image side surfaces, S7 are the 4th lens object side, S8 is the 4th lens image side surface；S9 is the 5th lens object side, S10
Five lens image side surfaces, S11 are the 6th lens object side, S12 is the 6th lens image side surface；S13 is optical filter object side；S14 is
Optical filter image side surface；S15 is protection glass object side；S16 is protection glass image side surface.
[specific embodiment]
The utility model technical characteristic is described in further detail in order to the field technology people with reference to the accompanying drawing
Member it will be appreciated that.
A kind of infrared confocal wide-angle lens, be disposed with from object side to image side the first lens 1, diaphragm 2, the second lens 3,
The third lens 4, the 4th lens 5, the 5th lens 6, the 6th lens 7, optical filter 8, protection glass 9, sensitive chip 10；
Each lens have object side and an image side surface, respectively the first lens object side S1, the first lens image side surface S2,
Second lens object side S3, the second lens image side surface S4, the third lens object side S5, the third lens image side surface S6, the 4th lens
Object side S7, the 4th lens image side surface S8, the 5th lens object side S9, the 5th lens image side surface S10, the 6th lens object side
S11, the 6th lens image side surface S12；
First lens object side S1 is convex surface, and the first lens image side surface S2 is concave surface, and the focal length of first lens 1 is
It is negative；
Second lens object side S3 is convex surface, and the second lens image side surface S4 is concave surface, and the focal length of second lens 3 is
Just；
The third lens object side S5 is concave surface, and the third lens image side surface S6 is convex surface, and the focal length of the third lens 4 is
Just；
4th lens object side S7 is concave surface, and the 4th lens image side surface S8 is convex surface, and the focal length of the 4th lens 5 is
Just；
5th lens object side S9 is concave surface, and the 4th lens image side surface S10 is convex surface, and the focal length of the 5th lens 6 is
It is negative；
6th lens object side S11 and the 6th lens image side surface S12 is convex surface, and the focal length of the 6th lens 7 is positive.
The focal length of the first lens 1 is negative in the utility model, is conducive to reduce the light beam and optical axis by after the first lens 1
Angle realize wide-angle image to increase field angle, after the second lens 3 are located at diaphragm 2, object side is convex surface, and image side surface is
Concave surface can preferably correct astigmatism, improve the imaging definition of entire image planes, the composite structure of each lens positive and minus focal, rationally
Ground distributes focal power, can preferably improve the resolution ratio of camera lens so that camera lens under visible and infrared mode can clearly at
Picture, realizes confocal outside visible red, in addition, the 6th lens image side surface S12 is convex surface, is conducive to reduce the outer field rays of axis in image planes
On incidence angle, improve relative illumination.
Infrared confocal wide-angle lens as described above, the infrared confocal wide-angle lens meet following relationship:
- 1.5 < f1/f3< -0.5；
0.8 < f2/ TTL < 1.4；
- 1.5 < f4/f5< -0.5；
3 < f6/ f < 5；
3 < TTL/f < 7；
Wherein, f is the focal length of camera lens, f1For the focal length of the first lens 1, f2For the focal length of the second lens 3, f3It is saturating for third
The focal length of mirror 4, f4For the focal length of the 4th lens 5, f5For the focal length of the 5th lens 6, f6For the focal length of the 6th lens 7, TTL is should
The overall length of the red outer confocal wide-angle lens.
In the present embodiment, the third lens 4 assume responsibility for larger focal power, not only improve the correction astigmatism and curvature of field, improve at
Image sharpness, and can cooperate together with the bonded assemblies that the second lens 3, the 4th lens 5 and the 5th lens 6 are constituted, in advance
Increase the outer field rays height of axis, reduce the angle of axis outer field rays and image planes, improve relative illumination, meets above-mentioned each thoroughly
The lens combination structure of mirror focal length relationship, can preferably various aberrations such as spherical aberration corrector, coma, astigmatism, enable entire image planes
Uniform blur-free imaging.
Infrared confocal wide-angle lens as described above, first lens 1, the second lens 3, the third lens 4, the 4th lens
5, the 5th lens 6, the 6th lens 7 are glass spherical lens.
In the present embodiment, using full glass material eyeglass, thermal refractive index coefficient is small, and thermal expansion coefficient under high/low temperature
It is small, can under the conditions of -40 DEG C~+85 DEG C of temperature changes blur-free imaging, in addition, using the spherical lens of glass material, optical lens
Rate height is crossed, physical and chemical properties are stablized, and are more suitable for eyeglass and need exposed environment, are able to satisfy vehicle-mounted industry to camera lens
The high request of patience.
Infrared confocal wide-angle lens as described above, the infrared confocal wide-angle lens meet following relationship:
Nd1≤1.7；Nd2≥1.8；Nd3≥1.8；
Nd5- Nd4≥0.25；
Nd6≥1.6；
Wherein, Nd1For the refractive index of the first lens 1, Nd2For the refractive index of the second lens 3, Nd3For the folding of the third lens 4
Penetrate rate, Nd4For the refractive index of the 4th lens 5, Nd5For the refractive index of the 5th lens 6, Nd6For the refractive index of the 6th lens 7.
In the present embodiment, the lens combination structure for meeting above-mentioned index of refraction relationship is advantageously implemented focal power and rationally divides
Match, the aberrations such as energy preferable spherical aberration corrector, coma to improve the clarity of lens imaging, and are able to achieve visible and infrared
Blur-free imaging under mode, the material of simultaneous selection appropriate index temperature coefficient, can obtain preferable temperature compensation function, from
And reduce temperature drift amount, stablize imaging when realizing temperature change.
Infrared confocal wide-angle lens as described above, the infrared confocal wide-angle lens meet following relationship:
lens1> 50, lens2< 50, lens3< 50；
lens4- lens5≥25；
40≤lens6≤60；
Wherein, lens1For the abbe number of the first lens 1, lens2For the abbe number of the second lens 3, lens3For third
The abbe number of lens 4, lens4For the abbe number of the 4th lens 5, lens5For the abbe number of the 5th lens 6, lens6For
The abbe number of 6th lens 7.
In the present embodiment, the lens combination structure for meeting above-mentioned each lens achromatic Relationship of Coefficients, can reduce second level
Spectrum realizes preferable chromatic aberration correction ability, so that infrared confocal function is realized, in addition, high dispersion and low-dispersion material are mutual
Collocation is conducive to the color difference and disc of confusion that reduce short wavelength, further increases the clarity of lens imaging.
Infrared confocal wide-angle lens as described above, the infrared confocal wide-angle lens meet following relationship:
A12+A23+A34+A56/ TTL < 0.2；
0.3 < T1+T2+T3+T4+T5+T6/ TTL < 0.6；
0.25 < BF/TTL < 0.5；
Wherein, A12For the airspace distance between the first lens 1 and the second lens 3, A23For the second lens 3 and third
Airspace distance between lens 4, A34For the airspace distance between the third lens 4 and the 4th lens 5, A56It is the 5th
Airspace distance between lens 6 and the 6th lens 7, airspace of the BF between the 6th lens 7 and sensitive chip 10 away from
From T1For the center thickness of the first lens 1, T2For the center thickness of the second lens 3, T3For the center thickness of the third lens 4, T4
For the center thickness of the 4th lens 5, T5For the center thickness of the 5th lens 6, T6For the center thickness of the 6th lens 7, TTL is mirror
The overall length of head.
In the present embodiment, the lens combination structure for meeting above-mentioned size relationship, in the premise for guaranteeing lens optical performance
Under, by designing reasonable eyeglass spacer structure, compensation function of the camera lens in temperature change may be implemented, can further decrease
Temperature drift amount.
In the present embodiment, the focal length f=3.156mm of infrared confocal wide-angle lens, relative aperture FNO=2.5, field angle
FOV=130 °, camera lens overall length TTL=15mm, visible waveband used is 435~656nm, and infrared band is 900~980nm, respectively
Lens items design parameter is as shown in the table:
| Face number | Radius R | Thickness | Refractive index Nd | Abbe number Vd |
| Object side | Infinity | Infinity | - | - |
| S1 | 22.051 | 0.599 | 1.508 | 61.061 |
| S2 | 1.654 | 1.823 | - | - |
| Diaphragm | Infinity | 0.1 | - | - |
| S3 | 7.837 | 1.351 | 2.001 | 25.435 |
| S4 | 13.023 | 0.258 | - | - |
| S5 | -18.872 | 1.466 | 1.883 | 40.807 |
| S6 | -3.562 | 0.098 | - | - |
| S7 | -25.880 | 2.112 | 1.593 | 68.525 |
| S8、S9 | -2.631 | 0.6 | 1.923 | 18.896 |
| S10 | -6.366 | 0.344 | - | - |
| S11 | 21.322 | 1.481 | 1.774 | 49.604 |
| S12 | -12.886 | 1.528 | - | - |
| S13 | Infinity | 0.3 | 1.517 | 64.212 |
| S14 | Infinity | 2.448 | - | - |
| S15 | Infinity | 0.40 | 1.517 | 64.212 |
| S16 | Infinity | 0.1 | - | - |
| Image side | Infinity | - | - | - |
In upper table, the unit of radius R and thickness is millimeter.
The optical property of the present embodiment is as shown in Fig. 2 to Fig. 8, and wherein Fig. 2 and Fig. 3 is the infrared confocal wide-angle in this programme
The MTF curve figure of camera lens, for evaluating the resolution capability of optical system imaging, Fig. 2 curve is the design of visible waveband under room temperature
As a result, Fig. 3 curve is the design result of infrared band under room temperature, from curve as can be seen that the embodiment of this programme is able to achieve 500
The imaging of ten thousand pixels；Fig. 4 to Fig. 7 is the overfocus point curve of the infrared confocal wide-angle lens in this programme, for evaluating optical system
The resolving power situation of change of different location before and after optimum image plane position, Fig. 4 curve be room temperature under visible waveband design
As a result, Fig. 5 curve is the design result of infrared band under room temperature, comparison diagram 4 and Fig. 5 curve, optimum image plane position under both of which
Difference 8um is set, illustrates that infrared visible confocal degree is preferable, infrared optical mode is switched to from visible mode, without re-starting
Focusing, can be obtained picture high-definition；Fig. 6 is the overfocus curve graph of -40 DEG C of visible wavebands of low temperature, and Fig. 7 is high temperature+85
The overfocus curve graph of DEG C visible waveband, comparison diagram 4, Fig. 6 and Fig. 7, it can be seen that under high/low temperature condition, back focus offset amount is non-
Often small, with normal temperature phase ratio, low temperature shift amount is -4um, high temperature drift amount is+4um, under high and low temperature environment, is still able to maintain non-
Often good imaging effect；Fig. 8 is relative illumination curve, the ratio on imaging surface periphery and center luminance is calculated, in the present embodiment
Relative illumination reaches 82%, and entire image planes can uniformly be imaged, without dark angle phenomenon.
Embodiment described in the utility model is only the description carried out to preferred embodiments of the present invention, not
Utility model conception and scope is defined, under the premise of not departing from the design concept of the utility model, engineering in this field
The all variations and modifications that technical staff makes the technical solution of the utility model should all fall into the protection model of the utility model
It encloses.
Claims (6)
1. a kind of infrared confocal wide-angle lens, it is characterised in that: be disposed with the first lens (1), diaphragm from object side to image side
(2), the second lens (3), the third lens (4), the 4th lens (5), the 5th lens (6), the 6th lens (7), optical filter (8), guarantor
Protect glass (9), sensitive chip (10)；
Each lens have object side and an image side surface, respectively the first lens object side (S1), the first lens image side surface (S2),
Second lens object side (S3), the second lens image side surface (S4), the third lens object side (S5), the third lens image side surface (S6),
4th lens object side (S7), the 4th lens image side surface (S8), the 5th lens object side (S9), the 5th lens image side surface (S10),
6th lens object side (S11), the 6th lens image side surface (S12)；
First lens object side (S1) is convex surface, and the first lens image side surface (S2) is concave surface, and the focal length of first lens (1) is
It is negative；
Second lens object side (S3) is convex surface, and the second lens image side surface (S4) is concave surface, and the focal length of second lens (3) is
Just；
The third lens object side (S5) is concave surface, and the third lens image side surface (S6) is convex surface, and the focal length of the third lens (4) is
Just；
4th lens object side (S7) is concave surface, and the 4th lens image side surface (S8) is convex surface, and the focal length of the 4th lens (5) is
Just；
5th lens object side (S9) is concave surface, and the 4th lens image side surface (S10) is convex surface, the focal length of the 5th lens (6)
It is negative；
6th lens object side (S11) and the 6th lens image side surface (S12) are convex surface, and the focal length of the 6th lens (7) is
Just.
2. infrared confocal wide-angle lens according to claim 1, it is characterised in that the infrared confocal wide-angle lens meet with
Lower relational expression:
- 1.5 < f1/f3< -0.5；
0.8 < f2/ TTL < 1.4；
- 1.5 < f4/f5< -0.5；
3 < f6/ f < 5；
3 < TTL/f < 7；
Wherein, f is the focal length of camera lens, f1For the focal length of the first lens (1), f2For the focal length of the second lens (3), f3It is saturating for third
The focal length of mirror (4), f4For the focal length of the 4th lens (5), f5For the focal length of the 5th lens (6), f6For the focal length of six lens (7),
TTL is the overall length of the red outer confocal wide-angle lens.
3. infrared confocal wide-angle lens according to claim 1, it is characterised in that: first lens (1), the second lens
(3), the third lens (4), the 4th lens (5), the 5th lens (6), six lens (7) are glass spherical lens.
4. infrared confocal wide-angle lens according to claim 1, it is characterised in that: the infrared confocal wide-angle lens meet with
Lower relational expression:
Nd1≤ 1.7, Nd2>=1.8, Nd3≥1.8；
Nd5- Nd4≥0.25；
Nd6≥1.6；
Wherein, Nd1For the refractive index of the first lens (1), Nd2For the refractive index of the second lens (3), Nd3For the third lens (4)
Refractive index, Nd4For the refractive index of the 4th lens (5), Nd5For the refractive index of the 5th lens (6), Nd6For the refraction of six lens (7)
Rate.
5. infrared confocal wide-angle lens according to claim 1, it is characterised in that: the infrared confocal wide-angle lens meets
Following relationship:
lens1> 50, lens2< 50, lens3< 50；
lens4- lens5≥25；
40≤lens6≤60；
Wherein, lens1For the abbe number of the first lens (1), lens2For the abbe number of the second lens (3), lens3For third
The abbe number of lens (4), lens4For the abbe number of the 4th lens (5), lens5For the abbe number of the 5th lens (6),
lens6For the abbe number of six lens (7).
6. infrared confocal wide-angle lens according to claim 1, it is characterised in that: the infrared confocal wide-angle lens meet with
Lower relational expression:
(A12+A23+A34+A56)/TTL < 0.2；
0.3 < (T1+T2+T3+T4+T5+T6)/TTL < 0.6；
0.25 < BF/TTL < 0.5；
Wherein, A12For the airspace distance between the first lens (1) and the second lens (3), A23For the second lens (3) and third
Airspace distance between lens (4), A34For the airspace distance between the third lens (4) and the 4th lens (5), A56
For the airspace distance between the 5th lens (6) and six lens (7), BF is between six lens (7) and sensitive chip (10)
Airspace distance, T1For the center thickness of the first lens (1), T2For the center thickness of the second lens (3), T3For the third lens
(4) center thickness, T4For the center thickness of the 4th lens (5), T5For the center thickness of the 5th lens (6), T6For six lens
(7) center thickness, TTL are the overall length of camera lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167475.8U CN209433110U (en) | 2019-01-29 | 2019-01-29 | A kind of infrared confocal wide-angle lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167475.8U CN209433110U (en) | 2019-01-29 | 2019-01-29 | A kind of infrared confocal wide-angle lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209433110U true CN209433110U (en) | 2019-09-24 |
Family
ID=67977880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920167475.8U Active CN209433110U (en) | 2019-01-29 | 2019-01-29 | A kind of infrared confocal wide-angle lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209433110U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633866A (en) * | 2019-01-29 | 2019-04-16 | 中山联合光电科技股份有限公司 | A kind of infrared confocal wide-angle lens optical system |
-
2019
- 2019-01-29 CN CN201920167475.8U patent/CN209433110U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633866A (en) * | 2019-01-29 | 2019-04-16 | 中山联合光电科技股份有限公司 | A kind of infrared confocal wide-angle lens optical system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103558677B (en) | A kind of without thermalization monitoring camera | |
| CN108318995B (en) | Lens system and lens | |
| CN109445067A (en) | Optical imaging lens and imaging device | |
| CN209297022U (en) | A kind of big visual field object lens of large relative aperture LONG WAVE INFRARED optical system | |
| WO2021027287A1 (en) | Large-aperture lens and terminal device | |
| CN203595856U (en) | Athermal monitoring camera lens | |
| CN110568590A (en) | Starlight-level optical lens and imaging method thereof | |
| CN105334598A (en) | Optical lens | |
| CN113109926A (en) | Low-distortion optical system and lens | |
| CN109633866A (en) | A kind of infrared confocal wide-angle lens optical system | |
| CN209433110U (en) | A kind of infrared confocal wide-angle lens | |
| CN109471243A (en) | A kind of infrared confocal lens optical system of ultrashort t TL | |
| CN209148949U (en) | A kind of day and night confocal camera lens | |
| CN211955960U (en) | Optical imaging lens with fixed focus and low chromatic aberration | |
| CN210742599U (en) | Starlight-level optical lens | |
| CN109001894B (en) | Small-distortion high-low-temperature-resistant prime lens | |
| CN209148948U (en) | A kind of no infrared confocal camera lens of purple boundary small in size | |
| CN114609755B (en) | Optical system of large-view-field high-imaging-stability camera and working method thereof | |
| CN114002819B (en) | Large-aperture high-definition day and night dual-purpose fixed-focus optical lens | |
| CN209356743U (en) | A kind of infrared confocal camera lens of fine definition | |
| CN107797259A (en) | A kind of super clear 4K tight shots of 5.2mm | |
| CN209014801U (en) | A kind of infrared confocal lens assembly | |
| CN211149043U (en) | Large-light-transmission day and night dual-purpose optical imaging lens | |
| CN109358412B (en) | High-definition infrared confocal lens | |
| CN209433109U (en) | A kind of infrared confocal camera lens of ultrashort t TL |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |