CN207067545U - Structure is homogenized and expands based on VCSEL laser diodes - Google Patents

Abstract

Structure is homogenized and expands based on VCSEL laser diodes the utility model discloses a kind of, the structure includes VCSEL laser diodes, concave-concave extender lens and biconvex condenser lens；The distance of VCSEL laser diodes and concave-concave extender lens between the two is immobilized, and the distance between the concave-concave extender lens and biconvex condenser lens are changed with moving left and right for biconvex condenser lens；The VCSEL laser diodes include laser chip and the multiple spot lights being distributed on laser chip, and multiple spot lights are in multiple spot orthogonal array structure distribution；The light-emitting area of multiple spot lights towards concave-concave extender lens, and VCSEL laser diodes it is luminous after first pass through concave-concave extender lens expand do beam homogenization and Gauss beam reshaping after focused on again by biconvex condenser lens.The utility model beam quality is finer and smoother, can meet the monitoring demand that the high clear night vision fine feature of existing 8K series video camera catches or is imaged.

Description

Structure is homogenized and expands based on VCSEL laser diodes

Technical field

It the utility model is related to photoelectric project technical field, more particularly to a kind of homogenizing based on VCSEL laser diodes And expand and Gauss light reshaping structure.

Background technology

Prior art is typically to use edge emitting laser and single-point laser light source, and edge emitting laser beam homogenizes difficulty, and There are dry point, fogging image after homogenizing.In addition, single-point laser light source, single-point optical power density is high, easily injures people or other dynamic Thing, particularly eyes, homogenize if single-point laser light source need to do light and need to fill hair glass with frosted glass plate or shaping prism or motor The mode of glass rotation homogenizes, and causing light shape, uneven to have the dry low-angle can not to do small, it is impossible to which being satisfied with remote monitor needs Ask, night or high definition, super clear monitoring see face or other fine feature demands clearly, and this single-point laser will in light homogenising process Rotated by motor driven frosted glass plate to homogenize hot spot, so there are two defects：First, motor is in ceaselessly working condition, hold It is stuck to easily cause machinery, so as to which design effect can not be reached；Second, having had more high-performance pot motor, product cost is caused Rise.And existing edge emitting laser diode, due to being that single-point lights, so luminous power is too high on single-point, and heat can not Quickly be directed at conductor completely, cause luminous power lifting difficult, or chip can not under -30 to 60 degree of low temperature or hot environment work Make.In addition, said structure make it that monitoring range and monitoring effect are extremely bad.

Utility model content

For weak point present in above-mentioned technology, a kind of beam quality of the utility model offer is uniform, monitoring effect Low the homogenizing based on VCSEL laser diodes of good and cost and Gauss light shaping and expand structure.

To achieve the above object, the utility model offer is a kind of homogenizes and expands structure based on VCSEL laser diodes, Including VCSEL laser diodes, concave-concave extender lens and biconvex condenser lens；The VCSEL laser diodes, concave-concave expand Mirror and biconvex condenser lens are sequentially distributed from left to right, and the center of three is on the same line；The VCSEL laser diodes Immobilized with the distance of concave-concave extender lens between the two, and between the concave-concave extender lens and biconvex condenser lens away from It is changed from moving left and right for biconvex condenser lens；The VCSEL laser diodes include laser chip and are distributed in Multiple spot lights on laser chip, multiple spot lights are in multiple spot orthogonal array structure distribution；The light-emitting area court of multiple spot lights To concave-concave extender lens, and VCSEL laser diodes it is luminous after first pass through concave-concave extender lens and expand and do beam homogenization and Gauss Focused on again by biconvex condenser lens after beam shaping.

Wherein, the concave-concave extender lens includes the first lens body, the first inner fovea part and the second inner fovea part, and described first Inner fovea part is arranged on the left side of the first lens body, and second inner fovea part is arranged on the right side of the first lens body, in first Recess and the second inner fovea part are to the central concave of the first lens body, and the second inner fovea part curvature of first inner fovea part is partly Footpath is less than the radius of curvature of the second inner fovea part.

Wherein, the biconvex condenser lens includes the second lens body and two male parts, and described two male parts are corresponding The left and right sides of the second lens body is arranged on, and the radius of curvature of two male parts is identical.

Wherein, the height of first lens body is less than the height of the second lens body.

The beneficial effects of the utility model are：Compared with prior art, it is provided by the utility model to be based on VCSEL laser two Pole pipe homogenizes and expanded structure, and the structure includes VCSEL laser diodes, concave-concave extender lens and biconvex condenser lens, Concave-concave extender lens is first passed through after VCSEL laser diodes are luminous expand and do after beam homogenization and Gauss beam reshaping again by double Convex condenser lens focuses on, and the structure carries out concave-concave extender lens and expanded to homogenize and Gauss light using VCSEL laser diodes are luminous Beam shaping, then focused on again using biconvex condenser lens or make parallel light so that its original angle of divergence expand or shrink it is several Times, so as to irradiate the increase of remote optical densities, irradiate farther distance, it is camera supervised closely when light beam expanded It is bigger, fully it is covered with camera screen, and obtain larger range of monitoring effect；Meanwhile because VCSEL laser diodes be by Secondary after multiple spot orthogonal array composition to homogenize, the beam quality so worked it out evenly, eliminates mill when mao slide rotates Sand point, makes beam quality finer and smoother, can meet what the high clear night vision fine feature of existing 8K series video camera caught or was imaged Monitoring demand, the requirement of high-quality imaging, such as high definition, ultra high-definition night viewing camera, industrial machine vision can be met.This it is new Not reducing makes in the case of transmitance light beam expand or expand 2-3 times, expands 2-3 times so as to change maximum angular, minimum angle diminution 2-3 Times.So as to meet to monitor remote and satisfaction closely large-scale monitoring demand simultaneously.

Brief description of the drawings

Fig. 1 is that concave-concave extender lens expands schematic diagram in the utility model；

Fig. 2 is that light beam is in dispersion angle maximum rating figure in the utility model；

Fig. 3 is that light beam is in parallel or focus state figure in the utility model；

Fig. 4 is the structural representation of VCSEL laser diodes in the utility model.

Main element symbol description is as follows：

10th, VCSEL laser diodes 11, concave-concave extender lens 12, biconvex condenser lens 101, laser chip 102, point light Source 111, the first lens body 112, the first inner fovea part 113, the second inner fovea part 121, the second lens body 122, male part.

Embodiment

In order to more clearly state the utility model, the utility model is further described below in conjunction with the accompanying drawings.

Refer to Fig. 1-4, it is provided by the utility model to homogenize and expand structure based on VCSEL laser diodes, including VCSEL laser diodes 10, concave-concave extender lens 11 and biconvex condenser lens 12；VCSEL laser diodes, concave-concave extender lens It is sequentially distributed from left to right with biconvex condenser lens, and the center of three is on the same line；VCSEL laser diodes and concave-concave The distance of extender lens between the two immobilizes, and the distance between concave-concave extender lens and biconvex condenser lens are with biconvex Moving left and right for condenser lens is changed；VCSEL laser diodes 10 include laser chip 101 and are distributed on laser chip Multiple spot lights 102, multiple spot lights are in multiple spot orthogonal array structure distribution；The light-emitting area of multiple spot lights expands towards concave-concave Beam lens, and VCSEL laser diodes it is luminous after first pass through concave-concave extender lens and expand and do beam homogenization and Gauss beam reshaping Focused on again by biconvex condenser lens afterwards.

Compared to the situation of prior art, homogenizing and expanding based on VCSEL laser diodes provided by the utility model Structure, the structure include VCSEL laser diodes, concave-concave extender lens and biconvex condenser lens, and VCSEL laser diodes light After first pass through concave-concave extender lens and expand to do and focused on again by biconvex condenser lens after beam homogenization and Gauss beam reshaping, the knot Structure carries out concave-concave extender lens and expanded to homogenize and Gauss beam reshaping using VCSEL laser diodes are luminous, then utilizes biconvex Condenser lens focuses on or makes parallel light again, so that its original angle of divergence expands or shrinks several times, so as to remote in irradiation Optical densities increase, irradiate farther distance, it is camera supervised closely when light beam is expanded bigger, be fully covered with video camera Screen, and obtain larger range of monitoring effect；Meanwhile because VCSEL laser diodes are by multiple spot light orthogonal arrays Secondary after composition to homogenize, the beam quality so worked it out evenly, eliminates frosted point when mao slide rotates, makes light beam matter Amount is finer and smoother, can meet the monitoring demand that the high clear night vision fine feature of existing 8K series video camera catches or is imaged.

In the present embodiment, concave-concave extender lens 11 is including in the first lens body 111, the first inner fovea part 112 and second Recess 113, the first inner fovea part are arranged on the left side of the first lens body, and the second inner fovea part is arranged on the right side of the first lens body Side, the first inner fovea part and the second inner fovea part are to the central concave of the first lens body, and the second inner fovea part of the first inner fovea part Radius of curvature is less than the radius of curvature of the second inner fovea part.Concave-concave extender lens carries out secondary Gauss while clear aperature is increased Light shaping and expand, the size of laser beam divergence is changed by the radius of curvature of concave-concave extender lens in itself.In the present embodiment In, biconvex condenser lens 12 includes the second lens body 121 and two male parts 122, and two male parts are correspondingly arranged at second The left and right sides of lens body, and the radius of curvature of two male parts is identical.The height of first lens body is less than the second lens The height of body.VCSEL multiple spot array lasers, due to laser chip have on into hundred to thousands of individual luminescence units, so each point On laser optical power it is very low, light beam carry out geometry it is overlapping after light beam evenly, luminous power can be high after superposition, but due to being more Individual luminescence unit is so more difficult make human or animal injured.Due to being expanded by concave-concave extender lens, beam divergence angle is than former The beginning VCSEL laser chip angle of divergence is bigger, and the monitoring range of realization is wider.

Operation principle of the present utility model is：Expanded using the luminous concave-concave extender lens that carries out of VCSEL laser diodes Beam homogenizes, and is then focused on again using suitable convex lens or makes parallel light so that its original angle of divergence expand or shrink it is several Times.As shown in figure 1, it is to begin that the distance of VCSEL laser diodes and concave-concave extender lens between the two, which immobilizes as focal length F1, Keep constant eventually, the distance between concave-concave extender lens and biconvex condenser lens with biconvex condenser lens move left and right into Row change, when biconvex condenser lens is in F2^,When, light beam is in the maximum state of dispersion angle, and monitoring range is wider；Work as biconvex When condenser lens is in F2, light beam is in parallel or focus state.

Specific advantage of the present utility model is as follows：

1）Without the laser diode to be lighted with single-point, the waste of material cost is caused, purchase cost is increased；

2）Elimination single-point laser beam quality is poor, so that monitored picture distortion or the wrong phenomenon debated；

3）Single-point light emitting laser diode luminous power height is eliminated, the injured situation of human or animal can be made；

4）Because VCSEL chips are formed by multiple spot orthogonal array, the heat of such laser diode is reached by multiple spot Conductor, it is easier to it is integrated, from the reliability of a wide range of lifting product chip under very high temperature or extremely low temperature, so as to lift chip Service life, if being normal work under -40 to+80 degree environment with VCSEL chip operating temperatures, and there is restorability, The advantages of resistance to harsh environments.

Disclosed above is only several specific embodiments of the present utility model, but the utility model is not limited to this, The changes that any person skilled in the art can think of should all fall into the scope of protection of the utility model.

Claims (4)

1. a kind of homogenize and expand structure based on VCSEL laser diodes, it is characterised in that including VCSEL laser diodes, Concave-concave extender lens and biconvex condenser lens；The VCSEL laser diodes, concave-concave extender lens and biconvex condenser lens are by a left side It is sequentially distributed to the right side, and the center of three is on the same line；Both described VCSEL laser diodes and concave-concave extender lens it Between distance immobilize, and the distance between the concave-concave extender lens and biconvex condenser lens are with biconvex condenser lens Move left and right and be changed；The VCSEL laser diodes include laser chip and multiple light being distributed on laser chip Source, spot light are in multiple spot orthogonal array structure distribution；The light-emitting area of multiple spot lights is towards concave-concave extender lens, and VCSEL swashs First passed through after optical diode is luminous concave-concave extender lens expand do beam homogenization and Gauss beam reshaping after focused on again by biconvex Lens focus.

2. according to claim 1 homogenize and expand structure based on VCSEL laser diodes, it is characterised in that described Concave-concave extender lens includes the first lens body, the first inner fovea part and the second inner fovea part, and first inner fovea part is arranged on first The left side of lens body, second inner fovea part are arranged on the right side of the first lens body, the first inner fovea part and the second inner fovea part To the central concave of the first lens body, and the second inner fovea part radius of curvature of first inner fovea part is less than the second inner fovea part Radius of curvature.

3. according to claim 2 homogenize and expand structure based on VCSEL laser diodes, it is characterised in that described Biconvex condenser lens includes the second lens body and two male parts, described two male parts are correspondingly arranged at the second lens body The left and right sides, and the radius of curvature of two male parts is identical.

4. according to claim 3 homogenize and expand structure based on VCSEL laser diodes, it is characterised in that described The height of first lens body is less than the height of the second lens body.