CN109358412B - High-definition infrared confocal lens - Google Patents
High-definition infrared confocal lens Download PDFInfo
- Publication number
- CN109358412B CN109358412B CN201811542807.2A CN201811542807A CN109358412B CN 109358412 B CN109358412 B CN 109358412B CN 201811542807 A CN201811542807 A CN 201811542807A CN 109358412 B CN109358412 B CN 109358412B
- Authority
- CN
- China
- Prior art keywords
- lens
- focal length
- infrared confocal
- infrared
- ttl
- 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
- 239000011521 glass Substances 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 239000006185 dispersion Substances 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000003384 imaging method Methods 0.000 description 13
- 230000003287 optical effect Effects 0.000 description 10
- 230000004075 alteration Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lenses (AREA)
Abstract
The invention discloses a high-definition infrared confocal lens, which is sequentially provided with the following components from an object side to an image side: a first lens; a second lens; a diaphragm; a third lens; a fourth lens; a fifth lens; a light filter; a protective glass; and a photosensitive chip. The concave and convex combined structure adopted by each lens can realize high definition in visible and infrared modes simultaneously by selecting materials with proper refractive indexes and reasonably distributing focal power. The invention selects the structures of three glass spherical lenses and two plastic aspherical lenses, and reasonably controls the thickness and the air interval distance of each lens to mutually compensate each lens, thereby realizing very small drift under high and low temperature conditions.
Description
[ field of technology ]
The invention relates to the technical field of optical lenses, in particular to a high-definition infrared confocal lens.
[ background Art ]
The infrared confocal lens can share the same optical system for imaging day and night without changing optical devices, is a technical specification of the lens proposed by the current vehicle-mounted and security industry, and is also a development trend of the future market. However, most of the existing infrared confocal lenses for vehicle-mounted and security protection are not high enough in definition, large in infrared visible defocus amount, difficult to simultaneously realize the definition requirement of imaging at daytime and night, seriously reduced in definition under high-low temperature environments, large in temperature drift, incapable of meeting the requirements of a plurality of vehicle-mounted and security protection occasions on the appearance of the lenses, insufficient in peripheral brightness of imaging pictures of the lenses and low in relative illuminance.
The present invention has been made in view of the above drawbacks.
[ invention ]
The invention aims to solve the technical problems of low definition, large defocus, large temperature drift and low relative illumination of the existing infrared confocal lens, and provides a high-definition infrared confocal lens.
In order to solve the technical problems, the invention adopts the following technical scheme:
the high-definition infrared confocal lens is characterized in that the high-definition infrared confocal lens is sequentially provided with:
the first lens is concave on one surface facing the object side and one surface facing the image side; the focal length of the first lens is negative;
the second lens is convex on one surface facing the object side and one surface facing the image side; the focal length of the second lens is positive;
a diaphragm;
the third lens is concave on the surface facing the object side and convex on the surface facing the image side; the focal length of the third lens is positive;
the fourth lens is convex on one surface facing the object side and one surface facing the image side; the focal length of the fourth lens is positive;
a fifth lens element with a concave surface facing the object side and a convex surface facing the image side; the focal length of the fifth lens is negative;
a light filter;
a protective glass;
and a photosensitive chip.
The high-definition infrared confocal lens is characterized by meeting the following relation:
-1.5＜f 1 /f＜-0.5；
0.5＜f 2 /f＜1.5；
5＜f 3 /f＜15；
2＜f 4-5 /f＜6；
3＜TTL/f＜6；
wherein f is the focal length of the lens, f 1 F is the focal length of the first lens 2 F is the focal length of the second lens 3 F is the focal length of the third lens 4-5 The TTL is the total length of the infrared confocal lens for the combined focal length of the fourth lens and the fifth lens.
The high-definition infrared confocal lens is characterized by meeting the following relation:
Nd 1 ≤1.7；
Nd 2 ≥1.6；
Nd 3 ≥1.6；
|Nd 2 －Nd 3 |≤0.3；
|Nd 4 －Nd 5 |≥0.1；
wherein Nd 1 For the refractive index of the first lens, nd 2 For the refractive index of the second lens, nd 3 For the refractive index of the third lens, nd 4 For the refractive index of the fourth lens, nd 5 Is the refractive index of the fifth lens.
The high-definition infrared confocal lens is characterized in that the first lens, the second lens and the third lens are all glass spherical lenses, and the fourth lens and the fifth lens are all plastic aspherical lenses.
The high-definition infrared confocal lens is characterized by meeting the following relation:
lens 1 ＞50，lens 2 ＜50，lens 3 ＜50；
|lens 4 －lens 5 |≥25；
1≤lens 1 /lens 2 ≤2；
wherein, the lens 1 Is the dispersion coefficient of the first lens, lens 2 Is the dispersion coefficient of the second lens, lens 3 Is the dispersion coefficient of the third lens, lens 4 Is the dispersion coefficient of the fourth lens, lens 5 Is the abbe number of the fifth lens.
The high-definition infrared confocal lens is characterized by meeting the following relation:
(A 12 +A 23 +A 34 )/TTL＜0.2；
0.4＜(T 1 +T 2 +T 3 +T 4 +T 5 )/TTL＜0.7；
0.1＜BF/TTL＜0.5；
wherein A is 12 A is the air spacing distance between the first lens and the second lens 23 Is a second lens and a third lensAir separation distance between lenses, A 34 The air spacing distance between the third lens and the fourth lens is BF, and T 1 For the center thickness of the first lens, T 2 Is the center thickness of the second lens, T 3 Is the center thickness of the third lens, T 4 For the center thickness of the fourth lens, T 5 The TTL is the total length of the lens, which is the center thickness of the fifth lens.
Compared with the prior art, the high-definition infrared confocal lens achieves the following effects:
1. the concave and convex combined structure adopted by each lens can realize high definition in visible and infrared modes simultaneously by selecting materials with proper refractive indexes and reasonably distributing focal power.
2. The invention selects the structures of three glass spherical lenses and two plastic aspherical lenses, and reasonably controls the thickness and the air interval distance of each lens to mutually compensate each lens, thereby realizing very small drift under high and low temperature conditions.
3. The invention realizes high relative illuminance up to 88% and far exceeding the common illuminance level by controlling the lens surface and not setting vignetting in the optimization process.
4. The invention has the characteristics of high definition, small infrared defocusing amount, small temperature drift and high illumination, and is suitable for popularization and application.
[ description of the drawings ]
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a graph showing MTF curves of visible modes at normal temperature in the examples of the present invention;
FIG. 3 is a graph showing the MTF curve of the infrared mode at room temperature in the examples of the present invention;
FIG. 4 is a graph showing the overfocal point of the visible band at normal temperature in an embodiment of the present invention;
FIG. 5 is a graph showing an over-focus curve of an infrared band at normal temperature in an embodiment of the present invention;
FIG. 6 is a graph of the over-focus in the visible band at-40℃for an example of the present invention;
FIG. 7 is a graph of the over-focus of the visible band at high temperature +85deg.C in an embodiment of the invention;
FIG. 8 is a graph of relative illuminance in an embodiment of the present invention.
[ detailed description ] of the invention
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a high-definition infrared confocal lens is provided with, in order from an object side to an image side:
the first lens 1 has concave object-side and image-side surfaces; the focal length of the first lens 1 is negative;
a second lens element 2 having a convex object-side surface and a convex image-side surface; the focal length of the second lens 2 is positive;
a diaphragm 3;
a third lens element 4 with a concave object-side surface and a convex image-side surface; the focal length of the third lens 4 is positive;
a fourth lens element 5 with convex object-side and image-side surfaces; the focal length of the fourth lens 5 is positive;
a fifth lens element 6 with a concave object-side surface and a convex image-side surface; the focal length of the fifth lens 6 is negative;
a filter 7; setting an optical filter to improve imaging effect;
a cover glass 8; so as to protect the photosensitive chip 9 and prevent the damage to the photosensitive chip caused by the outside;
and a photosensitive chip 9.
In the invention, each lens adopts a concave-convex type combination and positive and negative focal length combination structure, and the focal power is reasonably distributed, so that the infrared visible defocus amount can be well reduced, thereby realizing infrared confocal, simultaneously reducing the temperature drift amount, ensuring that the imaging definition of the lens in a high-low temperature environment is not affected, in addition, the last surface of the lens is arranged to be convex, being beneficial to increasing the ratio of the solid angle of an external view field light cone to the solid angle of a central view field light cone when the lens is incident on a phase surface, reducing the difference of the energy of external view field light and the energy of central view field light, and improving the relative illumination.
As shown in fig. 1, in the present embodiment, the high-definition infrared confocal lens satisfies the following relationship:
-1.5＜f 1 /f＜-0.5；
0.5＜f 2 /f＜1.5；
5＜f 3 /f＜15；
2＜f 4-5 /f＜6；
3＜TTL/f＜6；
wherein f is the focal length of the lens, f 1 F is the focal length of the first lens 1 2 Is the focal length f of the second lens 2 3 F is the focal length of the third lens 4 4-5 For the combined focal length of the fourth lens 5 and the fifth lens 6, TTL is the total length of the infrared confocal lens.
In this embodiment, the lens combination structure satisfying the focal length relation of each lens can reasonably distribute the focal power of each lens, improve imaging definition, realize high definition in both visible and infrared modes, reduce the offset of the optimal image plane in both modes, and achieve the confocal purpose.
As shown in fig. 1, in the present embodiment, the high-definition infrared confocal lens satisfies the following relationship:
Nd 1 ≤1.7；
Nd 2 ≥1.6；
Nd 3 ≥1.6；
|Nd 2 －Nd 3 |≤0.3；
|Nd 4 －Nd 5 |≥0.1；
wherein Nd 1 For the refractive index of the first lens 1, nd 2 For the refractive index of the second lens 2, nd 3 For the refractive index of the third lens 4, nd 4 For the refractive index of the fourth lens 5, nd 5 Is the refractive index of the fifth lens 6.
In this embodiment, the lens combination structure satisfying the refractive index relationship can easily achieve reasonable distribution of optical power, and well correct aberrations such as spherical aberration, curvature of field, coma, and the like, thereby improving imaging definition of visible and infrared bands and satisfying infrared confocal requirements.
As shown in fig. 1, in the present embodiment, the first lens element 1, the second lens element 2 and the third lens element 4 are all spherical glass lenses, and the fourth lens element 5 and the fifth lens element 6 are all aspherical plastic lenses.
In this embodiment, a matching mode of two aspherical mirrors and 3 spherical mirrors is adopted, so that spherical aberration, field curvature, astigmatism and other aberrations can be corrected well by optimizing the curvature and the surface shape of the lenses, the imaging resolution of the lens can be improved, and high definition can be realized. The spherical lens made of glass is adopted, the refractive index temperature coefficient is small, the thermal expansion coefficient at high and low temperatures is small, and the requirement of small temperature drift can be easily met.
As shown in fig. 1, in the present embodiment, the high-definition infrared confocal lens is characterized in that the high-definition infrared confocal lens satisfies the following relationship:
lens 1 ＞50，lens 2 ＜50，lens 3 ＜50；
|lens 4 －lens 5 |≥25；
1≤lens 1 /lens 2 ≤2；
wherein, the lens 1 Is the dispersion coefficient of the first lens 1, lens 2 Is the dispersion coefficient of the second lens 2, lens 3 Is the dispersion coefficient of the third lens 4, lens 4 For the dispersion coefficient of the fourth lens 5, lens 5 Is the dispersion coefficient of the fifth lens 6.
In this embodiment, the lens combination structure satisfying the above-mentioned relationship between the dispersion coefficients of the lenses can achieve better chromatic aberration correction capability, so as to improve the imaging definition of the visible and infrared bands and achieve the infrared confocal requirement.
As shown in fig. 1, in the present embodiment, the high-definition infrared confocal lens satisfies the following relationship:
(A 12 +A 23 +A 34 )/TTL＜0.2；
0.4＜(T 1 +T 2 +T 3 +T 4 +T 5 )/TTL＜0.7；
0.1＜BF/TTL＜0.5；
wherein A is 12 A is the air separation distance between the first lens 1 and the second lens 2 23 A is the air spacing distance between the second lens 2 and the third lens 4 34 For the air gap distance between the third lens 4 and the fourth lens 5, BF is the air gap distance between the fifth lens 6 and the photosensitive chip 9, T 1 For the center thickness of the first lens 1, T 2 Is the center thickness of the second lens 2, T 3 For the center thickness of the third lens 4, T 4 For the center thickness of the fourth lens 5, T 5 The TTL is the total length of the lens for the center thickness of the fifth lens 6.
In this embodiment, the lens combination structure satisfying the above dimensional relationship, on the premise of ensuring the optical performance of the lens, reasonably controls the thickness and the interval of the lens, and simultaneously selects the lens material with appropriate refractive index changing with temperature, so that the focal power of each lens compensates each other when the temperature changes, thereby realizing smaller temperature drift, and stable working and clear imaging at different temperatures.
In this embodiment, the focal length f= 3.494mm of the high-definition infrared confocal lens, the relative aperture fno=2.5, the field angle fov=94°, the total lens length ttl= 15.418mm, the visible wavelength band used is 435-656 nm, the infrared wavelength band is 900-980 nm, and the specific parameters of each lens are as follows:
| face numbering | Radius R | Thickness of (L) | Refractive index Nd | Abbe number Vd |
| Object side | Infinity | 500 | ||
| S1 | -15.544 | 0.6 | 1.583 | 59.416 |
| S2 | 2.497 | 2.06 | ||
| S3 | 5.841 | 2 | 1.774 | 49.604 |
| S4 | -4.768 | -0.104 | ||
| Diaphragm | Infinity | 0.384 | ||
| S6 | -3.763 | 2.502 | 1.883 | 40.807 |
| S7 | -4.503 | 0.1 | ||
| *S8 | 11.240 | 1.573 | 1.535 | 56.072 |
| *S9 | -2.483 | 1.201 | 1.661 | 20.373 |
| *S10 | -10.015 | 0.5 | ||
| S11 (Filter) | Infinity | 0.3 | 1.517 | 64.212 |
| S12 (Filter) | Infinity | 3.802 | ||
| S13 (protective glass) | Infinity | 0.40 | 1.517 | 64.212 |
| S14 (protective glass) | Infinity | 0.1 | ||
| Image side | Infinity | - |
In the table above, the units of radius R and thickness are millimeters; the surface marked "×" indicates an aspherical surface, and the surface shape of the aspherical lens satisfies the following relationship:
wherein, the parameter c is the curvature corresponding to the radius of the lens, y is a radial coordinate, the unit of the radial coordinate is the same as the unit of the length of the lens, and k is a conic coefficient; when the k coefficient is smaller than-1, the surface shape curve of the lens is a hyperbola, and when the k coefficient is equal to-1, the surface shape curve of the lens is a parabola; when the k coefficient is between-1 and 0, the surface shape curve of the lens is elliptical, when the k coefficient is equal to 0, the surface shape curve of the lens is circular, and when the k coefficient is greater than 0, the surface shape curve of the lens is oblate; a, a 1 To a 8 The coefficients corresponding to the radial coordinates are respectively represented, and the detailed aspheric related parameters are shown in the following table:
| k | a 1 | a 2 | a 3 | a 4 | |
| *S8 | -74.64784 | 0 | 0.0049444102 | -0.00095320341 | -0.00015792315 |
| *S9 | -0.1621267 | 0 | 0.0078060901 | -0.0042213306 | 0.0012596561 |
| *S10 | -38.63106 | 0 | -0.0030140012 | 0.00010313957 | 8.376606e-005 |
and (5) continuing the table:
| a 5 | a 6 | a 7 | a 8 | |
| *S8 | 6.3871644e-005 | 4.742665e-006 | -9.1702474e-007 | -4.9577249e-007 |
| *S9 | 0.00038339585 | -0.00021940575 | 7.6693848e-006 | 4.813244e-006 |
| *S10 | -2.1886897e-005 | 4.2220406e-007 | 2.3082344e-007 | -2.7982633e-009 |
the optical performance of the embodiment is shown in fig. 2 to 7, wherein fig. 2 and 3 are MTF curves of the high-definition infrared confocal lens in the scheme at normal temperature, which are used for evaluating the resolution of the optical system, fig. 2 is a design result of a visible mode, fig. 3 is a design result of an infrared mode, and in both modes, the MTF values of all fields of view at 83lp/mm are above 0.55, so that 200 ten thousand high-definition requirements can be easily satisfied; fig. 4 to 7 are overfocal graphs of the high-definition infrared confocal lens in the present solution, for evaluating the variation of resolution capability of the optical system at different positions before and after the optimal image plane position, where the graph of fig. 4 shows the design result of the visible band at normal temperature, the graph of fig. 5 shows the design result of the infrared band at normal temperature, and the graph of fig. 4 and the graph of fig. 5 are compared, and the abscissa offset corresponding to the peak values of both is only 5um, and the MTF value of the central view field at the same image plane is greater than 0.65, which indicates that the infrared visible confocal degree is better, the defocus amount is very small, and the optical system is switched from the visible light mode to the infrared light mode, so that the imaging quality can be very good without refocusing; fig. 6 is an overfocal curve diagram of a visible wave band at a low temperature of-40 ℃, fig. 7 is an overfocal curve diagram of a visible wave band at a high temperature of +85 ℃, and comparison between fig. 4, fig. 6 and fig. 7 shows that the back focal offset is very small under the high and low temperature conditions, and compared with normal temperature, the low temperature drift is only-4 um, the high Wen Piaoyi is only +3um, at the moment, the variation of the MTF value is less than 3 percent, and the imaging effect is hardly influenced, so that the imaging effect can still be kept very good under the high and low temperature environment; fig. 8 is a graph of relative illuminance for evaluating uniformity of light intensity of an image plane, and it can be seen from the graph that the relative illuminance of the high-definition infrared confocal lens in the scheme is very high and reaches 88%, the brightness difference between the periphery of the image plane and the center is small, and the overall brightness is uniform.
Claims (2)
1. The infrared confocal lens is characterized in that the infrared confocal lens is sequentially provided with:
a first lens (1), wherein both the surface of the first lens (1) facing the object side and the surface facing the image side are concave surfaces; the focal length of the first lens (1) is negative;
a second lens (2), wherein a surface of the second lens (2) facing the object side and a surface facing the image side are both convex surfaces; the focal length of the second lens (2) is positive;
a diaphragm (3);
a third lens (4), wherein a surface of the third lens (4) facing the object side is a concave surface, and a surface facing the image side is a convex surface; the focal length of the third lens (4) is positive;
a fourth lens (5), wherein a surface of the fourth lens (5) facing the object side and a surface facing the image side are both convex surfaces; the focal length of the fourth lens (5) is positive;
a fifth lens (6), wherein a surface of the fifth lens (6) facing the object side is a concave surface, and a surface facing the image side is a convex surface; the focal length of the fifth lens (6) is negative;
a light filter (7);
a protective glass (8);
a photosensitive chip (9);
the infrared confocal lens satisfies the following relation:
-1.5＜f 1 /f＜-0.5；
0.5＜f 2 /f＜1.5；
5＜f 3 /f＜15；
2＜f 4-5 /f＜6；
3＜TTL/f＜6；
wherein f is the focal length of the lens, f 1 Is the focal length f of the first lens (1) 2 Is the focal length f of the second lens (2) 3 Is the focal length f of the third lens (4) 4-5 The TTL is the total length of the infrared confocal lens and is the combined focal length of the fourth lens (5) and the fifth lens (6);
the infrared confocal lens satisfies the following relation:
Nd 1 ≤1.7；
Nd 2 ≥1.6；
Nd 3 ≥1.6；
|Nd 2 －Nd 3 |≤0.3；
|Nd 4 －Nd 5 |≥0.1；
wherein Nd 1 Is the refractive index of the first lens (1), nd 2 Is the refractive index of the second lens (2), nd 3 Is the refractive index of the third lens (4), nd 4 Is the refractive index of the fourth lens (5), nd 5 Is the refractive index of the fifth lens (6);
the first lens (1), the second lens (2) and the third lens (4) are all glass spherical lenses, and the fourth lens (5) and the fifth lens (6) are all plastic aspherical lenses;
the infrared confocal lens satisfies the following relation:
(A 12 +A 23 +A 34 )/TTL＜0.2；
0.4＜(T 1 +T 2 +T 3 +T 4 +T 5 )/TTL＜0.7；
0.1＜BF/TTL＜0.5；
wherein A is 12 A is the air separation distance between the first lens (1) and the second lens (2) 23 A is the air separation distance between the second lens (2) and the third lens (4) 34 BF is the fifth lens (6) for the air-gap distance between the third lens (4) and the fourth lens (5)Air gap distance T between the photosensitive chip (9) 1 Is the center thickness, T, of the first lens (1) 2 Is the center thickness of the second lens (2), T 3 Is the center thickness of the third lens (4), T 4 Is the center thickness of the fourth lens (5), T 5 The center thickness of the fifth lens (6) is TTL, which is the total length of the lens.
2. An infrared confocal lens according to claim 1 wherein said infrared confocal lens satisfies the following relationship:
lens 1 ＞50，lens 2 ＜50，lens 3 ＜50；
|lens 4 －lens 5 |≥25；
1≤lens 1 /lens 2 ≤2；
wherein, the lens 1 Is the Abbe's number of the first lens (1) 2 Is the dispersion coefficient of the second lens (2) 3 Is the dispersion coefficient of the third lens (4) 4 Is the dispersion coefficient of the fourth lens (5) 5 Is the dispersion coefficient of the fifth lens (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542807.2A CN109358412B (en) | 2018-12-17 | 2018-12-17 | High-definition infrared confocal lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542807.2A CN109358412B (en) | 2018-12-17 | 2018-12-17 | High-definition infrared confocal lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109358412A CN109358412A (en) | 2019-02-19 |
| CN109358412B true CN109358412B (en) | 2023-08-15 |
Family
ID=65329839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811542807.2A Active CN109358412B (en) | 2018-12-17 | 2018-12-17 | High-definition infrared confocal lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109358412B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538138B (en) * | 2020-07-09 | 2020-10-20 | 瑞声通讯科技(常州)有限公司 | Image pickup optical lens |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204287587U (en) * | 2014-12-25 | 2015-04-22 | 中山联合光电科技有限公司 | The optical system of a kind of high/low temperature, infrared confocal, high pixel and low cost |
| CN205246961U (en) * | 2015-12-17 | 2016-05-18 | 中山联合光电科技股份有限公司 | Confocal optical lens of infrared confocal high low temperature of high pixel |
| CN106680978A (en) * | 2017-01-22 | 2017-05-17 | 东莞市宇瞳光学科技股份有限公司 | Wide-field-of-view low-cost high definition athermalization prime lens |
| CN107144942A (en) * | 2017-07-04 | 2017-09-08 | 中山联合光电科技股份有限公司 | A kind of infrared confocal opticses imaging system |
| CN107741627A (en) * | 2017-11-06 | 2018-02-27 | 中山联合光电科技股份有限公司 | A kind of large aperture low-cost optical imaging system |
| CN108279474A (en) * | 2017-01-06 | 2018-07-13 | 先进光电科技股份有限公司 | Optical imaging system |
| CN209356743U (en) * | 2018-12-17 | 2019-09-06 | 中山联合光电科技股份有限公司 | A kind of infrared confocal camera lens of fine definition |
-
2018
- 2018-12-17 CN CN201811542807.2A patent/CN109358412B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204287587U (en) * | 2014-12-25 | 2015-04-22 | 中山联合光电科技有限公司 | The optical system of a kind of high/low temperature, infrared confocal, high pixel and low cost |
| CN205246961U (en) * | 2015-12-17 | 2016-05-18 | 中山联合光电科技股份有限公司 | Confocal optical lens of infrared confocal high low temperature of high pixel |
| CN108279474A (en) * | 2017-01-06 | 2018-07-13 | 先进光电科技股份有限公司 | Optical imaging system |
| CN106680978A (en) * | 2017-01-22 | 2017-05-17 | 东莞市宇瞳光学科技股份有限公司 | Wide-field-of-view low-cost high definition athermalization prime lens |
| CN107144942A (en) * | 2017-07-04 | 2017-09-08 | 中山联合光电科技股份有限公司 | A kind of infrared confocal opticses imaging system |
| CN107741627A (en) * | 2017-11-06 | 2018-02-27 | 中山联合光电科技股份有限公司 | A kind of large aperture low-cost optical imaging system |
| CN209356743U (en) * | 2018-12-17 | 2019-09-06 | 中山联合光电科技股份有限公司 | A kind of infrared confocal camera lens of fine definition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109358412A (en) | 2019-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110221401B (en) | Infrared confocal wide-angle lens | |
| CN109471243B (en) | Ultra-short TTL infrared confocal lens optical system | |
| CN108318995B (en) | Lens system and lens | |
| WO2019052144A1 (en) | Optical imaging lens | |
| CN109521549A (en) | Bugeye lens | |
| CN107065140B (en) | Intelligent vehicle-mounted high-pixel wide-angle lens | |
| CN109960006B (en) | Optical lens | |
| CN110568590A (en) | Starlight-level optical lens and imaging method thereof | |
| CN106918897A (en) | A kind of compact ultra-wide angle day and night confocal opticses camera lens | |
| CN114153064B (en) | Integrated micro-optical system and microscope | |
| CN117369094B (en) | Optical lens | |
| CN109633866B (en) | Infrared confocal wide-angle lens optical system | |
| CN211955960U (en) | Optical imaging lens with fixed focus and low chromatic aberration | |
| CN109358412B (en) | High-definition infrared confocal lens | |
| CN210742599U (en) | Starlight-level optical lens | |
| CN111983788A (en) | Wide-angle lens | |
| CN109324396B (en) | Infrared confocal lens | |
| CN218158527U (en) | Large-aperture lens | |
| CN114019656B (en) | Small wide-angle high-low temperature day-night confocal lens | |
| CN114114613B (en) | Ultralow distortion optical system and industrial lens | |
| CN209356743U (en) | A kind of infrared confocal camera lens of fine definition | |
| CN212623294U (en) | Large wide-angle low-distortion video optical system and lens | |
| CN112285906B (en) | Ultra-high-definition wide-angle imaging optical system | |
| CN108490583B (en) | High-pixel wide-angle lens | |
| CN209014801U (en) | A kind of infrared confocal lens assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |