CN203773047U - Optical system where laser ranging and aiming shares light path - Google Patents
Optical system where laser ranging and aiming shares light path Download PDFInfo
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- CN203773047U CN203773047U CN201420100429.3U CN201420100429U CN203773047U CN 203773047 U CN203773047 U CN 203773047U CN 201420100429 U CN201420100429 U CN 201420100429U CN 203773047 U CN203773047 U CN 203773047U
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Abstract
The utility model relates to an optical system where laser ranging and aiming shares a light path. The optical system comprises block prisms and an object lens group; the bock prisms are disposed at the emergent light side of the object lens group in a co-optical axis manner; the object lens group comprises, from the incident light side to the emergent light side, a plane-convex lens, a convex-concave lens, a biconcave lens and a biconvex lens, which all share the same optical axis; the four lens are arranged at intervals; a cemented surface which forms a 45-degree included angle with the optical axis is disposed in the block prisms; and the cemented surface is plated with a layer of visible light transmission film and a layer of laser reflecting film, so as to realize light split of visible light and laser light. The optical system is compact in structure, small in size and convenient to carry; and with the design of the shared optical axis, the optical axes of laser ranging and visible light aiming completely overlap, thus raising detecting accuracy of the equipment.
Description
Technical field
The utility model relates to a kind of laser ranging optical system, specifically a kind of laser ranging and aiming path optical system altogether.
Background technology
The advantages such as that range finder using laser has is simple to operate, measuring accuracy is high, operating distance is far away, antijamming capability is strong, military and civil on be all widely used.Range finder using laser generally comprises laser distance measuring system and visible ray sighting system.Laser distance measuring system comprises again laser transmitting system and laser receiver system.Range finder using laser is in the time of work, first utilize visible ray to aim at optical system and aim at measured target, then utilize laser transmitting system transmitting beam of laser to measured target, return laser beam after scattering is received by laser receiver system, thereby utilizes the measurement parameter such as the light velocity and mistiming to determine the distance between measured target and observation point.The height of range finder using laser measuring accuracy, depends on the quality of launching optical axis, receiving the collimation between optical axis and aiming optical axis.Only have the accurate of the strict parallel guarantee range finding of three axles, any deviation of three between centers all can affect the range performance of complete machine.In addition, Laser emission, reception and visible ray aim at the volume, the weight that adopt different optical systems can increase instrument, increase operating personnel's burden, are unfavorable for the operation of carrying of instrument.
Utility model content
The purpose of this utility model is to provide a kind of laser ranging and aims at altogether path optical system, to solve the poor and volume of plain shaft parallelism that existing laser ranging system utilizes different optical system to be caused, problem that weight is large.
The utility model is achieved in that a kind of laser ranging and aims at altogether path optical system, and its structure comprises block prism and objective lens, described block prism with optical axis be arranged at emergent light one side of described objective lens; Described objective lens comprises planoconvex lens, meniscus lens, biconcave mirror and the biconvex mirror that common optical axis arranges successively from incident light one side to emergent light one side; Described four lens intervals arrange; In described block prism, be provided with the cemented surface that is 45 ° of angles with described optical axis; On described cemented surface, be coated with one deck visible transmission film and one deck laser reflective film, in order to realize the light splitting of visible ray and laser.
Described planoconvex lens and described meniscus lens spacing are 10.06mm; Described meniscus lens and described biconcave mirror spacing are 1.4mm; Described biconcave mirror and described biconvex mirror spacing are 19.3mm.
The utility model is installed in range finder using laser, and visible ray sighting device and laser ranging system are separately positioned on the focal plane of objective lens of the present utility model.Objective lens is made up of spaced four lens, is respectively planoconvex lens, meniscus lens, biconcave mirror and biconvex mirror, and compact conformation, to take volume little, and aberration is little, can meet imaging and request for utilization.Block prism with optical axis be arranged at emergent light one side of objective lens, and be provided with the cemented surface that is 45 ° of angles with objective lens optical axis in inside, on cemented surface, plate laser reflective film and visible transmission film.Visible ray and laser are by objective lens incident, and light is being transmitted through after the cemented surface of block prism, and visible ray is directed to visible ray sighting device through visible transmission film; And laser is under laser reflection membrane interaction, be reflected onto laser distance measuring system.By point light action of block prism, make visible ray aiming and laser ranging adopt same set of optical system, visible ray aims at light path and laser ranging light path coaxial line, has improved the accuracy of detection of instrument.
On the plane of incidence of described block prism and exit facet, be coated with visible ray anti-reflection film and laser anti-reflection film; The transmissivity of described two anti-reflection films is all greater than 95%.Anti-reflection film carries out gas barrier processing to the light of other wave band, can collect to greatest extent return laser beam and ensure visible ray picture element.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, planoconvex lens, 2, meniscus lens, 3, biconcave mirror, 4, biconvex mirror, 5, block prism, 6, visible ray sighting device, 7, laser ranging system.
Embodiment
Below in conjunction with specific embodiment, the utility model is made further explanation.
As shown in Figure 1, the utility model comprises block prism 5 and the objective lens that same optical axis arranges.Block prism 5 is arranged on emergent light one side of objective lens.Objective lens comprises planoconvex lens 1, meniscus lens 2, biconcave mirror 3 and the biconvex mirror 4 that common optical axis arranges successively from incident light one side to emergent light one side.In block prism 5, be provided with the cemented surface that is 45 ° of angles with objective lens optical axis, on cemented surface, be coated with one deck visible transmission film and one deck laser reflective film, in order to realize the light splitting of visible ray and laser.The utility model is installed in range finder using laser, and visible ray sighting device 6 is positioned over respectively on the focal plane of objective lens with laser ranging system 7.
Place at four lens intervals of objective lens, and application ZEMAX software designs the structural parameters of each lens, finally obtains: objective lens focal distance f=80mm, relative aperture D/f=1:2.8, field angle a=5.7 °, overall length L=85mm.Wherein: planoconvex lens 1 is by H-K51 glass preparation, eyeglass f=53.15mm, R1=27.8mm, R2=∞; Meniscus lens 2 is by H-2K9A glass preparation, eyeglass f=100.12mm, R1=27.8mm, R2=-47.41mm; Biconcave mirror 3 is by ZF5 glass preparation, eyeglass f=-18.72mm, R1=-62.2mm, R2=-18.8mm; Biconvex mirror 4 is by H-LAF2 glass preparation, eyeglass f=39.63mm, R1=43.37mm, R2=79.648mm.Planoconvex lens 1 is 10.06mm with meniscus lens 2 spacing, and meniscus lens 2 is 104mm with biconcave mirror 3 spacing, and biconcave mirror 3 is 19.3mm with biconvex mirror 4 spacing.
On the plane of incidence of block prism 5 and exit facet, be coated with 486-656nm visible ray anti-reflection film and 1064nm laser anti-reflection film, transmissivity is greater than 95%.Anti-reflection film carries out gas barrier processing to the light of other wave band, collects to greatest extent return laser beam and ensures visible ray picture element.
When range finder using laser work, measured target light, through planoconvex lens, meniscus lens, biconcave mirror and the biconvex mirror of objective lens, is incident to the plane of incidence of block prism 5.Under the effect of plane of incidence anti-reflection film, measured target light reaches block prism cemented surface.Target light is through cemented surface directly thoroughly to visible ray sighting device 6, and visible ray sighting device 6 is obtaining after measured target image, adjusts the cross-graduation center of visible ray sighting device 6 and measured target position summary are aimed at, and then triggers laser.The laser beam that laser ranging system 7 is launched is incident to block prism cemented surface through the block prism plane of incidence, and the laser reflective film on cemented surface reflexes to objective lens and penetrates; Return laser beam, by objective lens incident, is reflected back laser ranging system 7 through laser reflective film after arrival block prism cemented surface, thereby can utilizes the measurement parameter such as the light velocity and mistiming to determine the distance between measured target and observation point.In whole process, laser ranging and visible ray aim at light path altogether, have greatly improved accuracy of detection.
Claims (3)
- Laser ranging with aim at an altogether path optical system, it is characterized in that, comprise block prism and objective lens, described block prism with optical axis be arranged at emergent light one side of described objective lens; Described objective lens comprises planoconvex lens, meniscus lens, biconcave mirror and the biconvex mirror that common optical axis arranges successively from incident light one side to emergent light one side; Described four lens intervals arrange; In described block prism, be provided with the cemented surface that is 45 ° of angles with described optical axis; On described cemented surface, be coated with one deck visible transmission film and one deck laser reflective film, in order to realize the light splitting of visible ray and laser.
- 2. laser ranging according to claim 1 and aiming path optical system altogether, is characterized in that, described planoconvex lens and described meniscus lens spacing are 10.06mm; Described meniscus lens and described biconcave mirror spacing are 1.4mm; Described biconcave mirror and described biconvex mirror spacing are 19.3mm.
- Laser ranging according to claim 1 with aim at altogether path optical system, it is characterized in that, on the plane of incidence of described block prism and exit facet, be coated with visible ray anti-reflection film and laser anti-reflection film; The transmissivity of described two anti-reflection films is all greater than 95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100429.3U CN203773047U (en) | 2014-03-07 | 2014-03-07 | Optical system where laser ranging and aiming shares light path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100429.3U CN203773047U (en) | 2014-03-07 | 2014-03-07 | Optical system where laser ranging and aiming shares light path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203773047U true CN203773047U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420100429.3U Expired - Fee Related CN203773047U (en) | 2014-03-07 | 2014-03-07 | Optical system where laser ranging and aiming shares light path |
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| CN (1) | CN203773047U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457744A (en) * | 2014-12-18 | 2015-03-25 | 扬州天目光电科技有限公司 | Handheld target detector and detection method and trajectory calculation method thereof |
| CN105738884A (en) * | 2016-05-04 | 2016-07-06 | 北京理工大学 | Adaptive laser ranging system based on liquid lens |
| CN106646699A (en) * | 2017-03-09 | 2017-05-10 | 索尔思光电（成都）有限公司 | Prism and light transmit-receive assembly |
| WO2018014276A1 (en) * | 2016-07-21 | 2018-01-25 | 左罗 | Optical apparatus for high-definition compact laser range finder |
| CN110199202A (en) * | 2018-04-18 | 2019-09-03 | 深圳市瑞尔幸电子有限公司 | The range finder scope of the total optical path of laser is separated before a kind of imaging len |
| CN110336932A (en) * | 2019-06-28 | 2019-10-15 | 西安应用光学研究所 | A kind of laser/TV with real-time school s function is total to light path system and uses and school axis method |
| CN112180550A (en) * | 2020-10-14 | 2021-01-05 | 湖北华中光电科技有限公司 | Optical splitting device for receiving double wave bands through common window and application thereof |
| CN113325390A (en) * | 2021-05-29 | 2021-08-31 | 北京波谱华光科技有限公司 | Three-light axis adjusting method and system in fixed structure |
-
2014
- 2014-03-07 CN CN201420100429.3U patent/CN203773047U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457744A (en) * | 2014-12-18 | 2015-03-25 | 扬州天目光电科技有限公司 | Handheld target detector and detection method and trajectory calculation method thereof |
| CN105738884A (en) * | 2016-05-04 | 2016-07-06 | 北京理工大学 | Adaptive laser ranging system based on liquid lens |
| CN105738884B (en) * | 2016-05-04 | 2018-06-29 | 北京理工大学 | A kind of adaptive laser ranging system based on liquid lens |
| WO2018014276A1 (en) * | 2016-07-21 | 2018-01-25 | 左罗 | Optical apparatus for high-definition compact laser range finder |
| CN106646699A (en) * | 2017-03-09 | 2017-05-10 | 索尔思光电（成都）有限公司 | Prism and light transmit-receive assembly |
| CN110199202A (en) * | 2018-04-18 | 2019-09-03 | 深圳市瑞尔幸电子有限公司 | The range finder scope of the total optical path of laser is separated before a kind of imaging len |
| CN110199202B (en) * | 2018-04-18 | 2022-11-18 | 深圳市瑞尔幸电子有限公司 | Common-path distance measuring sighting device for front separation laser of imaging lens |
| CN110336932A (en) * | 2019-06-28 | 2019-10-15 | 西安应用光学研究所 | A kind of laser/TV with real-time school s function is total to light path system and uses and school axis method |
| CN110336932B (en) * | 2019-06-28 | 2020-11-10 | 西安应用光学研究所 | Laser/television common optical path system with real-time axis correcting function and using and axis correcting method |
| CN112180550A (en) * | 2020-10-14 | 2021-01-05 | 湖北华中光电科技有限公司 | Optical splitting device for receiving double wave bands through common window and application thereof |
| CN113325390A (en) * | 2021-05-29 | 2021-08-31 | 北京波谱华光科技有限公司 | Three-light axis adjusting method and system in fixed structure |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| 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: 20140813 Termination date: 20180307 |