CN208013532U - A kind of infrared laser illumination zoom lens - Google Patents
A kind of infrared laser illumination zoom lens Download PDFInfo
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- CN208013532U CN208013532U CN201820037364.0U CN201820037364U CN208013532U CN 208013532 U CN208013532 U CN 208013532U CN 201820037364 U CN201820037364 U CN 201820037364U CN 208013532 U CN208013532 U CN 208013532U
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- lens group
- lens
- light source
- zoom
- laser light
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Abstract
In order to solve the problems, such as that laser irradiation becomes the angle of divergence, the utility model provides a kind of infrared laser illumination zoom lens, including the laser light source and zoom lens set gradually from left to right, zoom lens the first lens group, the second lens group, the third lens group successively from left to right, wherein the first lens group focal power is just, second lens group focal power is negative, and the third lens group focal power is just；And first lens group relative laser light source fixed setting, the third lens group and the second lens group relative laser light source position are adjustable.Laser light source is sent out after wide-angle light beam transforms to the second lens front focal length by the first lens group, defocus zoom telescopic system, which is formed, by the second lens group and the third lens group converts the light angle of divergence, change the position of the second lens group and the third lens group relative laser light source, and then the defocusing amount of defocus zoom telescopic system is adjusted, different diverging angular transformations may be implemented.
Description
Technical field
The utility model is related to technical field of laser illumination more particularly to a kind of infrared laser to illuminate zoom lens.
Background technology
Its beam divergence angle of traditional LED illumination is big, can only irradiate within 500m, remote again, the irradiation being not achieved of distance
Effect；For laser due to its good beam quality, the angle of divergence is small, and power density is high, therefore several kilometers of irradiation may be implemented.Due to shining
The far and near luminaire that can efficiently illuminate need to be realized by penetrating, therefore a kind of lighting device becoming the angle of divergence of demand.
Utility model content
In order to solve the problems, such as that laser irradiation becomes the angle of divergence, the utility model provides a kind of infrared laser illumination varifocal mirror
Head can realize the transformation of the larger far field beam angle of divergence, and in angular transformation, beam energy utilization is very high.
The utility model is achieved in the following ways：A kind of infrared laser illumination zoom lens, including from left to right
The laser light source and zoom lens set gradually, the zoom lens the first lens group, the second lens group, successively from left to right
Three lens groups, wherein the first lens group focal power is just, the second lens group focal power is negative, and the third lens group focal power is just；
And first lens group relative laser light source fixed setting, the third lens group and the second lens group relative laser light source position are adjustable.
Further, the laser light source is edge emitter laser light source or vertical plane battle array laser light source, laser light source wave
Long 800nm-900nm.
Further, the third lens group focal length absolute value is more than the second lens group focal length absolute value, the third lens group and second
Lens group forms Galileo defocus zoom telescopic system.
Further, first lens group is made of a piece of or a piece of above lens, and total focal power is just.
Further, the laser light source is set to before the front focal length of the first lens group, the waist of laser after optical beam transformation
Spot becomes 1.2 to 5 times of light source.
Further, second lens group is made of a piece of or a piece of above lens, and total focal power is negative.
Further, the third lens group is made of a piece of or a piece of above lens, and total focal power is just.
Further, the third lens group focal length absolute value is the second 4 to 12 times of lens group focal length absolute value, and first thoroughly
Microscope group focal length absolute value is the second 0.4 to 0.9 times of lens group focal length absolute value.
Infrared laser provided by the utility model illuminates zoom lens, the wide-angle light beam that laser light source is sent out, by the
After one lens group transforms to the second lens front focal length, defocus zoom telescopic system is formed by the second lens group and the third lens group
The light angle of divergence is converted, the position of the second lens group and the third lens group relative laser light source is changed, and then adjusts defocus zoom and hopes
The defocusing amount of remote system, may be implemented different diverging angular transformations；Simultaneously because light beam transforms to second thoroughly by the first lens group
After mirror front focal length, it is very high that light beam percent of pass is found by the defocus zoom telescopic system of the second lens group and the third lens group composition
Correspondence focal length, therefore infrared laser provided by the utility model illumination the zoom lens far field beam angle of divergence transformation range
Width, and in angular transformation, beam energy utilization is very high.
Description of the drawings
Fig. 1 is a kind of infrared laser illumination zoom lens optical principle schematic of the utility model；
Fig. 2 is a kind of initial position figure of infrared laser illumination zoom lens zooming transform of the utility model；
Fig. 3 is a kind of one schematic diagram of infrared laser illumination zoom lens Zooming method of the utility model；
Fig. 4 is a kind of two schematic diagram of infrared laser illumination zoom lens Zooming method of the utility model；
Fig. 5 is that a kind of optical parameter of infrared laser illumination zoom lens of the utility model is saturating with the second lens group and third
The trend chart of microscope group distance L variations；
Fig. 6 is a kind of infrared laser illumination each lens group schematic shapes of zoom lens of the utility model；
In figure：1 light source portion, 2 zoom lens, 201 first lens groups, 202 second lens groups, 203 the third lens groups, f1
One lens group object space focal length, f2 ' the second lens group image space focal lengths, f3 the third lens group object space focal lengths, the second lens group of Δ and
Three lens group telescopic system defocusing amounts, the first lens groups of L0 and the third lens group distance, the first lens groups of S0 and the second lens group
Initial distance, the second lens groups of L change with the third lens group distance, wherein L=f2 '+f3+ Δs, d for the second lens group position
Amount, d1 are the second lens group position variable quantity, and d2 is the third lens group location variation.
Specific implementation mode
As shown in figures 1 to 6, the utility model provides a kind of infrared laser illumination zoom lens 2, in the present embodiment, packet
Include the laser light source 1 set gradually from left to right and zoom lens 2, first lens group successively from left to right of the zoom lens 2
201, the second lens group 202, the third lens group 203, wherein 201 focal power of the first lens group is just, 202 light focus of the second lens group
Degree is negative, and 203 focal power of the third lens group is just；And 201 relative laser light source 1 of the first lens group is fixedly installed, the third lens
Group 203 and 202 relative laser light source of the second lens group, 1 position are adjustable.
The utility model is when specifically used, in order to improve radiation response, ensures that brightness, laser light source 1 are edge-emission
Laser light source 1 or vertical plane battle array laser light source 1,1 wavelength 800nm-900nm of laser light source, in the present embodiment, laser light source 1
Using infrared edge emitter laser light source 1, wavelength 810nm；The wide-angle light beam that laser light source 1 is sent out, passes through the first lens
After group 201 transforms to the second lens front focal length, defocus zoom is formed by the second lens group 202 and the third lens group 203 and is looked in the distance
The system changeover light angle of divergence changes the position of the second lens group 202 and 203 relative laser light source 1 of the third lens group, and then adjusts
Different diverging angular transformations may be implemented in the defocusing amount of defocus zoom telescopic system；Simultaneously because light beam passes through the first lens group 201
After transforming to the second lens front focal length, pass through the defocus zoom telescopic system of the second lens group 202 and the composition of the third lens group 203
The very high correspondence focal length of light beam percent of pass is found, therefore infrared laser provided by the utility model illumination 2 light beam of zoom lens is remote
The transformation range of the field angle of divergence is wide, and in angular transformation, beam energy utilization is very high.
In the present embodiment, in order to improve the transformation range of the laser irradiation angle of divergence, and raising beam energy utilization rate,
203 focal length absolute value of the third lens group is more than 202 focal length absolute value of the second lens group, the third lens group 203 and the second lens group
202 composition Galileo defocus zoom telescopic systems.Change 203 relative laser light source 1 of the second lens group 202 and the third lens group
Position, and then the defocusing amount of defocus zoom telescopic system is adjusted, system changes while amplifying accurate big multiplying power.First lens group
After the beam waist spot of 201 laser light sources 1 transforms to lens group front focal length, the third lens group 203 and the second lens group 202 composition
When the accurate big multiplying power of Galileo defocus zoom telescopic system amplification changes, rims of the lens intercepts light beam less, the thang-kng effect of system
Rate is very high.
The utility model infrared laser illuminates zoom lens 2 before zooming transform, as shown in Fig. 2, at the beginning of the second lens group 202
Before the front focal length of beginning position is located at 201 transformation beam waist spot of the first lens group, the third lens group 203 from the second lens group 202 away from
It is placed at the defocusing amount of maximum amplification times yield from L.When changing defocusing amount, system magnifying power changes；Method there are two types of changing, method
One as shown in figure 3, the third lens group 203 is motionless with respect to the first lens group 201, i.e., L0 is constant, the second lens group 202 opposite first
201 distance of lens group becomes larger, i.e. the second lens group 202 is gradually distance from the first lens group 201, while the second lens group 202
Gradually to the third lens group 203 close to movement, beam divergence angle changes from small to big；Method two is as shown in figure 4, the second lens group 202
It is moved relative to the first lens group 201 with the third lens group 203, but the two moving direction is on the contrary, i.e. the second lens group 202 is opposite
First lens group 201 is separate, while the third lens group 203 is close with respect to the first lens group 201, and beam divergence angle changes from small to big；
2 degree to 60 degree or 1 degree to 40 degree transformation of beam divergence angle may be implemented.
Further, in order to expand application range, first lens group 201 is by a piece of or a piece of above lens group
At total focal power is just；Meanwhile second lens group 202 be made of a piece of or a piece of above lens, total focal power is negative；The
Three lens groups 203 are made of a piece of or a piece of above lens, and total focal power is just；For the change of expanded light beam far-field divergence angle
Range is changed, and improves beam energy utilization rate, the waist spot of laser becomes 1.2 to 5 times of light source after optical beam transformation, and third is saturating
203 focal length absolute value of microscope group is 202 4 to 12 times of focal length absolute value of the second lens group, and 201 focal length absolute value of the first lens group is the
Two lens groups, 202 0.4 to 0.9 times of focal length absolute value；In the present embodiment, as shown in fig. 6, the first lens group 201 is flat for monolithic
Convex lens, focal length 9.3mm, the second lens group 202 are that two panels lens combination forms, focal length -11.3mm, and the third lens group 203 is single
Piece biconvex lens, focal length 80.0mm can realize 2 degree to 60 degree transformation of the angle of divergence.
Although giving detailed description and explanation to specific embodiment of the present utility model above, it should be noted that
It is that we can carry out various equivalent changes and modification according to the conception of the utility model to the above embodiment, produced by
Function still covered without departing from specification and attached drawing spirit when, should be covered by the scope of the present utility model within.
Claims (8)
1. a kind of infrared laser illuminates zoom lens, which is characterized in that including the laser light source set gradually from left to right and change
Zoom lens, the zoom lens the first lens group, the second lens group, the third lens group successively from left to right, wherein the first lens
Group focal power is that just, the second lens group focal power is negative, and the third lens group focal power is just；And the first lens group relative laser light
Source is fixedly installed, and the third lens group and the second lens group relative laser light source position are adjustable.
2. infrared laser according to claim 1 illuminates zoom lens, which is characterized in that the laser light source is sent out for edge
Penetrate laser light source or vertical plane battle array laser light source, laser source wavelength 800nm-900nm.
3. infrared laser according to claim 1 or 2 illuminates zoom lens, which is characterized in that the third lens group focal length is exhausted
Second lens group focal length absolute value is more than to value, the third lens group and the second lens group composition Galileo defocus zoom look in the distance and be
System.
4. infrared laser according to claim 3 illuminates zoom lens, which is characterized in that the laser light source is set to the
Before the front focal length of one lens group, the waist spot of laser becomes 1.2 to 5 times of light source after optical beam transformation.
5. infrared laser according to claim 1 or 2 or 4 illuminates zoom lens, which is characterized in that the third lens group
Focal length absolute value is the second 4 to 12 times of lens group focal length absolute value, and the first lens group focal length absolute value is the second lens group focal length
0.4 to 0.9 times of absolute value.
6. infrared laser according to claim 5 illuminates zoom lens, which is characterized in that first lens group is by a piece of
Or a piece of above lens composition, total focal power is just.
7. the infrared laser according to claims 1 or 2 or 4 or 6 illuminates zoom lens, which is characterized in that described second thoroughly
Microscope group is made of a piece of or a piece of above lens, and total focal power is negative.
8. infrared laser according to claim 7 illuminates zoom lens, which is characterized in that the third lens group is by a piece of
Or a piece of above lens composition, total focal power is just.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820037364.0U CN208013532U (en) | 2018-01-10 | 2018-01-10 | A kind of infrared laser illumination zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820037364.0U CN208013532U (en) | 2018-01-10 | 2018-01-10 | A kind of infrared laser illumination zoom lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208013532U true CN208013532U (en) | 2018-10-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820037364.0U Withdrawn - After Issue CN208013532U (en) | 2018-01-10 | 2018-01-10 | A kind of infrared laser illumination zoom lens |
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| Country | Link |
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| CN (1) | CN208013532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991764A (en) * | 2018-01-10 | 2018-05-04 | 重庆镭典科技有限公司 | A kind of infrared laser illuminates zoom lens |
-
2018
- 2018-01-10 CN CN201820037364.0U patent/CN208013532U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991764A (en) * | 2018-01-10 | 2018-05-04 | 重庆镭典科技有限公司 | A kind of infrared laser illuminates zoom lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191203 Address after: 610000 Chengdu City, Chengdu, Sichuan, China (Sichuan) free trade test zone, Chengdu high tech Zone, Tianfu two street 368, 1 unit 12 floor 1201 Patentee after: Chengdu tangge Technology Co., Ltd Address before: 400039 No. 200 C- nine level 1, No. 2, Keyuan Road, Jiulongpo District, Chongqing. Patentee before: Chongqing radium science and Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200522 Address after: 621700 workshop 4, xinjinxin lighting industrial park, Chuangyuan Road, East Zone, Jiangyou high tech Industrial Park, Jiangyou City, Mianyang City, Sichuan Province Patentee after: Sichuan Shilai Photoelectric Technology Co., Ltd Address before: 610000 Chengdu City, Chengdu, Sichuan, China (Sichuan) free trade test zone, Chengdu high tech Zone, Tianfu two street 368, 1 unit 12 floor 1201 Patentee before: Chengdu tangge Technology Co., Ltd |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181026 Effective date of abandoning: 20210930 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181026 Effective date of abandoning: 20210930 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| CU01 | Correction of utility model |
Correction item: abandonment of patent right Correct: Voluntary surrender of patent rights False: The initiative to abandon the patent Number: 43-01 Volume: 37 |
|
| CU01 | Correction of utility model |