CN208239713U - A kind of off-axis two anti-systems of microchip laser rangefinder - Google Patents
A kind of off-axis two anti-systems of microchip laser rangefinder Download PDFInfo
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- CN208239713U CN208239713U CN201820346065.5U CN201820346065U CN208239713U CN 208239713 U CN208239713 U CN 208239713U CN 201820346065 U CN201820346065 U CN 201820346065U CN 208239713 U CN208239713 U CN 208239713U
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- axis
- mirror
- reflector mirror
- laser
- axis reflector
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Abstract
The utility model discloses a kind of off-axis two anti-systems of microchip laser rangefinder, the system includes the first off axis reflector mirror and the second off axis reflector mirror, first off axis reflector mirror is spherical mirror, second off axis reflector mirror is even aspheric surface mirror, it is dissipated after laser light incident to the first off axis reflector mirror and reflexes to the second off axis reflector mirror, and be emitted after being reflected on the second off axis reflector mirror, formation expands hot spot；Wherein, the first off axis reflector mirror is tilted relative to the primary optical axis of incident laser, and the second off axis reflector mirror exists off-axis eccentric relative to the primary optical axis of incident laser.Off-axis two anti-systems of the microchip laser rangefinder of the utility model are using two off axis reflector mirror designs, by setting spherical mirror for the first off axis reflector mirror, even aspheric surface mirror is set by the second off axis reflector mirror, it can be in non-stop layer energy loss, in the case of non-stop layer blocks, satisfaction expands multiplying power design requirement, realizes long range ranging, it is at low cost, it has a vast market foreground.
Description
Technical field
The utility model relates to laser range finder technical field, in particular to off-axis the two of a kind of microchip laser rangefinder are anti-
System.
Background technique
Laser beam expanding system is the pith in many laser device equipment such as laser range finder, and main function is pressure
The space divergence angle of contracting laser, and laser beam is made to meet aperture requirement, realize remote ranging.Existing beam-expanding system design side
Method is broadly divided into refractive and reflection-type, and design, processing and the adjusting of refractive beam expander are all relatively simple, such as big nation of Shenzhen
The patent " laser beam expanding system " of laser Science and Technology Co., Ltd. application, is realized using two pieces of lens combinations, but expanded
The aperture of hot spot is smaller, and multiplying power is lower, it is difficult to meet emergent light spot heavy caliber requirement.It is expanded though reflection-type beam expander is capable of increasing
Multiplying power, compressibility length, but there are problems that central obscuration, cause Gaussian laser central light beam energy loss serious, it is difficult to
Realize remote ranging.Therefore, while how to avoid central obscuration, meet high magnification and expand design requirement as laser expansion
The critical issue of beam system design.
Utility model content
The technical problems to be solved in the utility model is how to provide a kind of center without blocking, while meeting high magnification and expanding
Microchip laser rangefinder off-axis two anti-systems.
In order to solve the above-mentioned technical problem, the utility model provides a kind of off-axis two anti-systems of microchip laser rangefinder
System, including the first off axis reflector mirror and the second off axis reflector mirror, the first off axis reflector mirror are spherical mirror, and described second is off-axis
Reflecting mirror is even aspheric surface mirror, dissipate after laser light incident to the first off axis reflector mirror and reflex to described second it is off-axis instead
Mirror is penetrated, and is emitted after being reflected on the second off axis reflector mirror, formation expands hot spot；Wherein, described first is off-axis anti-
Penetrate mirror relative to incident laser primary optical axis tilt, the second off axis reflector mirror relative to incident laser primary optical axis exist from
Eccentric shaft.
It is 3.9mm's that the first off axis reflector mirror, which is vertex curvature radius, as a further improvement of the utility model,
Spherical mirror, caliber size 5mm, the distance between described second off axis reflector mirror is 27.2mm, with the incident laser
The inclination angle of primary optical axis is 19.5 °；The second off axis reflector mirror is that quadratic surface coefficient is -1.163, and vertex curvature is
The even aspheric surface mirror of 51.732mm, caliber size 14.2mm, the mechanical axis of the second off axis reflector mirror and the incidence
The eccentric distance of the primary optical axis of laser is 2.4mm, and the mechanical axis is that being mechanically fixed for the second off axis reflector mirror is symmetrical
Axis；The angle of divergence of the incident laser is 12.5mrad, spot diameter 0.25mm；The shoot laser angle of divergence is 0.45mrad, light
Spot diameter is 12.7mm.
Height is coated on the first off axis reflector mirror and the second off axis reflector mirror as a further improvement of the utility model,
Anti- film.
The incident laser is 1.54 μm of laser as a further improvement of the utility model,.
The material of the first off axis reflector mirror and the second off axis reflector mirror is as a further improvement of the utility model,
Aluminium.
Off-axis two anti-systems of the microchip laser rangefinder of the utility model using the design of two off axis reflector mirrors, pass through by
First off axis reflector mirror is set as spherical mirror, sets even aspheric surface mirror for the second off axis reflector mirror, can be in non-stop layer energy
Amount loss, in the case of non-stop layer blocks, satisfaction expands multiplying power design requirement, realizes long range ranging, and compact-sized, is easy to
Single-point diamond lathe process, at low cost, high financial profit have very big application potential in laser range finder field, have wide
Wealthy market prospects.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model
It can be more clearly understood with advantage, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the schematic diagram of off-axis two anti-systems of microchip laser rangefinder in the utility model embodiment；
Fig. 2 is the energy diagram of the shoot laser detected in the utility model embodiment；
Fig. 3 is the image planes point range figure of system in the utility model embodiment.
Description of symbols: 10, the first off axis reflector mirror；20, the second off axis reflector mirror；21, mechanical axis；30, laser port；40,
Incident laser；41, primary optical axis；50, shoot laser；60, inclination angle.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
As shown in Figure 1, being off-axis two anti-systems of the utility model microchip laser rangefinder, which includes first off-axis
It is coated with high-reflecting film on reflecting mirror 10 and the second off axis reflector mirror 20, the first off axis reflector mirror 10 and the second off axis reflector mirror 20, the
One off axis reflector mirror 10 and the second off axis reflector mirror 20 are aluminum material, can use single-point diamond lathe process.First is off-axis anti-
Penetrating mirror 10 is spherical mirror, and the second off axis reflector mirror 20 is even aspheric surface mirror, and the second off axis reflector mirror 20 is provided with laser port 30,
Incident laser 40 is incident on the first off axis reflector mirror 10 from laser port 30, dissipates and reflexes on the first off axis reflector mirror 10
Second off axis reflector mirror 20, is emitted after then reflecting, and the formation of shoot laser 50 expands hot spot.Wherein, in order to meet center
Without blocking, the first off axis reflector mirror 10 is tilted relative to the primary optical axis 41 of incident laser 40, forms inclination angle 60, and second is off-axis anti-
It penetrates mirror 20 and there is off-axis bias relative to the primary optical axis 41 of incident laser 40.
In the present embodiment, we select 1.54 μm of laser, and the first off axis reflector mirror 10 selection vertex curvature radius is
The spherical mirror of 3.9mm, caliber size 5mm, the distance between second off axis reflector mirror 20 is 27.2mm, with incident laser 40
Primary optical axis 41 inclination angle 60 be 19.5 °；It is -1.163 that second off axis reflector mirror 20, which selects quadratic surface coefficient, vertex curvature
For the even aspheric surface mirror of 51.732mm, caliber size 14.2mm, the mechanical axis 21 of the second off axis reflector mirror 20 and incidence swash
The eccentric distance of the primary optical axis 41 of light 40 is 2.4mm, wherein mechanical axis 21 is being mechanically fixed pair for the second off axis reflector mirror 20
Claim axis；The angle of divergence of incident laser 40 is 12.5mrad, spot diameter 0.25mm.Obtained 50 angle of divergence of shoot laser is
0.45mrad, spot diameter 12.7mm.System overall magnification are as follows: emergent light spot diameter/launching spot diameter=12.7/
0.25=50.8, satisfaction expand 50 multiplying powers.
As shown in Fig. 2, for the energy diagram of the shoot laser detected in the utility model embodiment.It is visited with detector
Survey the energy of shoot laser 50, wherein total trace light beam is 840989, and peak illumination 1.077W detects 0.841W,
Rate of energy loss is lower than 20%, effectively avoids energy loss caused by central obscuration.
As shown in figure 3, for the image planes point range figure of system in the utility model embodiment.It can be seen from the figure that not at 5
With (in the incident laser angle of divergence), picture point is respectively less than Airy, reaches diffraction limit under visual field.
Off-axis two anti-systems of the microchip laser rangefinder of the utility model using the design of two off axis reflector mirrors, pass through by
First off axis reflector mirror is set as spherical mirror, sets even aspheric surface mirror for the second off axis reflector mirror, can be in non-stop layer energy
Amount loss, in the case of non-stop layer blocks, satisfaction expands multiplying power design requirement, realizes long range ranging, and compact-sized, is easy to
Single-point diamond lathe process, at low cost, high financial profit have very big application potential in laser range finder field, have wide
Wealthy market prospects.
Above embodiments are only preferred embodiments for fully illustrating the utility model, the guarantor of the utility model
It is without being limited thereto to protect range.Those skilled in the art made equivalent substitute or transformation on the basis of the utility model,
It is within the protection scope of the utility model.The protection scope of the utility model is subject to claims.
Claims (5)
1. a kind of off-axis two anti-systems of microchip laser rangefinder, which is characterized in that including the first off axis reflector mirror and second from
Axis reflecting mirror, the first off axis reflector mirror are spherical mirror, and the second off axis reflector mirror is even aspheric surface mirror, laser light incident
The second off axis reflector mirror is dissipated and reflexed to after to the first off axis reflector mirror, and on the second off axis reflector mirror
It is emitted after reflecting, formation expands hot spot；Wherein, the first off axis reflector mirror inclines relative to the primary optical axis of incident laser
Tiltedly, the second off axis reflector mirror exists off-axis eccentric relative to the primary optical axis of incident laser.
2. off-axis two anti-systems of microchip laser rangefinder as described in claim 1, which is characterized in that described first is off-axis anti-
Penetrating mirror is the spherical mirror that vertex curvature radius is 3.9mm, between caliber size 5mm, with the second off axis reflector mirror away from
From for 27.2mm, the inclination angle with the primary optical axis of the incident laser is 19.5 °；The second off axis reflector mirror is quadratic surface
Coefficient is -1.163, and vertex curvature is the even aspheric surface mirror of 51.732mm, and caliber size 14.2mm, described second is off-axis anti-
The eccentric distance for penetrating the mechanical axis of mirror and the primary optical axis of the incident laser is 2.4mm, and the mechanical axis is described second off-axis
Reflecting mirror is mechanically fixed symmetry axis；The angle of divergence of the incident laser is 12.5mrad, spot diameter 0.25mm；Shoot laser
The angle of divergence is 0.45mrad, spot diameter 12.7mm.
3. off-axis two anti-systems of microchip laser rangefinder as described in claim 1, which is characterized in that described first is off-axis anti-
It penetrates on mirror and the second off axis reflector mirror and is coated with high-reflecting film.
4. off-axis two anti-systems of microchip laser rangefinder as described in claim 1, which is characterized in that the incident laser is
1.54 μm laser.
5. off-axis two anti-systems of microchip laser rangefinder as described in claim 1, which is characterized in that described first is off-axis anti-
The material for penetrating mirror and the second off axis reflector mirror is aluminium.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017216249174 | 2017-11-29 | ||
| CN201721624917 | 2017-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208239713U true CN208239713U (en) | 2018-12-14 |
Family
ID=64588258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820346065.5U Expired - Fee Related CN208239713U (en) | 2017-11-29 | 2018-03-14 | A kind of off-axis two anti-systems of microchip laser rangefinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208239713U (en) |
-
2018
- 2018-03-14 CN CN201820346065.5U patent/CN208239713U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181214 Termination date: 20190314 |