CN203217180U - 1064nm / 532nm dual-band beam expander - Google Patents
1064nm / 532nm dual-band beam expander Download PDFInfo
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- CN203217180U CN203217180U CN2013202051899U CN201320205189U CN203217180U CN 203217180 U CN203217180 U CN 203217180U CN 2013202051899 U CN2013202051899 U CN 2013202051899U CN 201320205189 U CN201320205189 U CN 201320205189U CN 203217180 U CN203217180 U CN 203217180U
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Abstract
The utility model provides a 1064nm / 532nm dual-band beam expander comprising a first lens and a second lens, which are on the same optical axis and are sequentially arranged according to the light-wave irradiation direction; the first lens and the second lens are all negative meniscus lenses, the concave spherical surfaces of which are located on at a light-wave incidence side; the first lens, which is made of F1 flint glass, has a focal length of -53.61mm; the second lens, which is made from H-K9 crown glass, has a focal length of 192.91mm; the focal positions of the first lens and the second lens coincide; and center distance is 108.5mm and coaxial center deviation is +- 0.05mm. Through use of the characteristic that different materials are different in light-wave dispersion and through optimization of optical lens surface shape and selection of appropriate materials, chromatic aberration of the beam expander at the 1064nm and 532nm bands are greatly reduced so that the beam expander has excellent beam expanding quality at the range of the two bands with an beam expanding ratio of 4.
Description
Technical field
The utility model belongs to optical technical field, especially a kind of 1064nm/532nm two waveband beam expanding lens.
Background technology
Laser beam expanding lens mainly contains two purposes: the diameter of first expanded beam; It two is the angles of divergence that reduce laser beam.Be widely used in industries such as industry, security protection, medical treatment.But present laser beam expanding lens only can be used for the specific wavelength light wave is expanded to compress its beam divergence angle all at a certain specific wavelength design.Therefore, just need a plurality of beam expanding lenss of different-waveband that are applicable to respectively respectively each wave band of laser Shu Jinhang to be expanded for multiband optics system, cause system architecture comparatively complicated.For example publication No. is the application for a patent for invention " laser processing device " of CN102837125A, comprise that but multichannel exports the laser instrument of a plurality of wavelength lasers, be suitable for exporting first wavelength laser and second wavelength laser, wherein the light path of the first wavelength laser process is first light path, and the light path of the second wavelength laser process is second light path; The first beam expanding lens group, first catoptron, end reflector and focusing objective len on first light path, described first catoptron is suitable for transmission first wavelength laser and reflects second wavelength laser to described end reflector, the laser that described end reflector is suitable for receiving reflexes to focusing objective len, and the laser that described focusing objective len is suitable for receiving converges to focus; With the second beam expanding lens group, second catoptron on second light path, described second catoptron is suitable for reflecting second wavelength laser to described first catoptron; By regulate in the described first beam expanding lens group and the second beam expanding lens group lenticular spacing from, make first wavelength laser and second wavelength laser focus on same focus through focusing objective len.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of 1064nm of being applicable to, 532nm the 1064nm/532nm two waveband laser beam expanding lens that two wave band of laser expand.
The utility model is realized above-mentioned technical purpose by following technological means.
1064nm/532nm two waveband beam expanding lens, comprise first lens and second lens that are positioned at same optical axis, are arranged in order by the light-wave irradiation direction, described first lens, second lens are the side that negative meniscus lens, concave spherical surface all are positioned at light wave incident, described first lens by the F1 flint glass make, focal length is-53.61mm, described second lens by the H-K9 crown glass make, focal length is 192.91mm, the focal position of described first lens, second lens overlaps, centre distance is 108.5mm, coaxial centre deviation is ± 0.05mm.
Preferably, the center thickness 5mm of described first lens, the radius-of-curvature 5.027mm of first concave spherical surface, the radius-of-curvature 8.179mm of the first protruding sphere; The center thickness 6mm of described second lens, the radius-of-curvature 52.459mm of second concave spherical surface, the radius-of-curvature 35.438mm of the second protruding sphere.
Preferably, the clear aperature of described first lens is 5mm, and the clear aperature of described second lens is 20mm.
Preferably, first lens and second lens surface all plate 1064nm ± 10nm, 532nm ± 10nm two waveband anti-reflection film.
1064nm/532nm two waveband beam expanding lens described in the utility model is based on the theoretical design of beam Propagation.Because commaterial has different refractive indexes to the light of different wave length, cause the light beams of different wavelengths scioptics after its direction of propagation separate dispersion phenomenon that Here it is.Therefore, by the different wave length light beam focal position difference behind the camera lens (being lens), the problem that same material that Here it is is brought the dispersive power difference of different wave length.Yet according to the difference of material to the light wave dispersive power, material can be divided into crown glass and flint glass.Crown glass is named with K usually, the more weak material of expression dispersive power.Flint glass with the F name, is represented the more intense material of dispersive power usually.The combination of normal these two kinds of glass materials of use compensates aberration in optical system.The utility model utilizes this characteristic, selects the negative meniscus lens of unlike material respectively as first lens and second lens, reduces the aberration of two kinds of light beams of different wavelengths after first lens and the refraction of second lens.In the utility model, adopt the F1 flint glass as first lens, adopt the H-K9 crown glass as second lens, optimize by optical mirror plane face shape, the aberration of the light wave that reduces 1064nm, two kinds of different-wavebands of 532nm after second lens of first lens of F1 flint glass and H-K9 crown glass expand, make to the utlity model has the good effect that expands, expanding multiplying power is 4 times.
In addition, all plate 1064nm ± 10nm, 532nm ± 10nm two waveband anti-reflection film at first lens and second lens surface, make duplex make the single face transmitance of wave band 99%, whole beam expanding lens has good light transmittance, transmitance〉96%.
Description of drawings
Fig. 1 is the structural representation of 1064nm/532nm two waveband beam expanding lens described in the utility model.
Description of reference numerals is as follows:
1-first lens, 2-second lens, 11-first concave spherical surface, the 12-first protruding sphere, 21-second concave spherical surface, the 22-second protruding sphere.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described, but protection domain of the present utility model is not limited to this.
As shown in Figure 1,1064nm/532nm two waveband beam expanding lens provided by the utility model, comprise first lens 1 and second lens 2 that are positioned at same optical axis, are arranged in order by the light-wave irradiation direction, described first lens 1, second lens 2 are the side that negative meniscus lens, concave spherical surface all are positioned at light wave incident, described first lens 1 are made by the F1 flint glass, focal length is-53.61mm, clear aperature is 5mm, center thickness 5mm, the radius-of-curvature 5.027mm of first concave spherical surface 11, the radius-of-curvature 8.179mm of the first protruding sphere 12; Described second lens 2 are made by the H-K9 crown glass, and focal length is 192.91mm, and clear aperature is 20mm center thickness 6mm, the radius-of-curvature 52.459mm of second concave spherical surface 21, the radius-of-curvature 35.438mm of the second protruding sphere 22.The focal position of described first lens 1, second lens 2 overlaps, centre distance is 108.5mm, coaxial centre deviation is ± 0.05mm.
Preferably, 1064nm ± 10nm, 532nm ± 10nm two waveband anti-reflection film is all plated on first lens 1 and second lens, 2 surfaces, makes duplex make the single face transmitance of wave band〉99%, whole beam expanding lens has good light transmittance, transmitance〉96%.
Above embodiment is preferred embodiment of the present utility model, and non exhaustive; The utility model is not limited to above-mentioned embodiment, and under the situation that does not deviate from flesh and blood of the present utility model, any apparent improvement, replacement or modification that those skilled in the art can make all belong to protection domain of the present utility model.
Claims (4)
1.1064nm/532nm two waveband beam expanding lens, it is characterized in that, comprise and be positioned at same optical axis, first lens (1) and second lens (2) that are arranged in order by the light-wave irradiation direction, described first lens (1), second lens (2) are the negative meniscus lens, concave spherical surface all is positioned at a side of light wave incident, described first lens (1) are made by the F1 flint glass, focal length is-53.61mm, described second lens (2) are made by the H-K9 crown glass, focal length is 192.91mm, described first lens (1), the focal position of second lens (2) overlaps, centre distance is 108.5mm, coaxial centre deviation is ± 0.05mm.
2. 1064nm/532nm two waveband beam expanding lens according to claim 1 is characterized in that, the center thickness 5mm of described first lens (1), the radius-of-curvature 5.027mm of first concave spherical surface (11), the radius-of-curvature 8.179mm of the first protruding sphere (12); The center thickness 6mm of described second lens (2), the radius-of-curvature 52.459mm of second concave spherical surface (21), the radius-of-curvature 35.438mm of the second protruding sphere (22).
3. 1064nm/532nm two waveband beam expanding lens according to claim 1 is characterized in that, the clear aperature of described first lens (1) is 5mm, and the clear aperature of described second lens (2) is 20mm.
4. according to each described 1064nm/532nm two waveband beam expanding lens of claim 1-3, it is characterized in that first lens (1) all plate 1064nm ± 10nm, 532nm ± 10nm two waveband anti-reflection film with second lens (2) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202051899U CN203217180U (en) | 2013-04-22 | 2013-04-22 | 1064nm / 532nm dual-band beam expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202051899U CN203217180U (en) | 2013-04-22 | 2013-04-22 | 1064nm / 532nm dual-band beam expander |
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| Publication Number | Publication Date |
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| CN203217180U true CN203217180U (en) | 2013-09-25 |
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| CN2013202051899U Expired - Lifetime CN203217180U (en) | 2013-04-22 | 2013-04-22 | 1064nm / 532nm dual-band beam expander |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760625A (en) * | 2013-12-25 | 2014-04-30 | 深圳市易飞扬通信技术有限公司 | Lens and lens set |
| CN106197258A (en) * | 2016-07-14 | 2016-12-07 | 中国科学院上海光学精密机械研究所 | Dual pathways dual wavelength interference checking device |
| CN111323926A (en) * | 2020-04-07 | 2020-06-23 | 中国科学院半导体研究所 | Gaussian beam shaping mirror, optical system and application thereof |
-
2013
- 2013-04-22 CN CN2013202051899U patent/CN203217180U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760625A (en) * | 2013-12-25 | 2014-04-30 | 深圳市易飞扬通信技术有限公司 | Lens and lens set |
| CN103760625B (en) * | 2013-12-25 | 2016-03-30 | 深圳市易飞扬通信技术有限公司 | Lens, lens combination |
| CN106197258A (en) * | 2016-07-14 | 2016-12-07 | 中国科学院上海光学精密机械研究所 | Dual pathways dual wavelength interference checking device |
| CN106197258B (en) * | 2016-07-14 | 2019-06-18 | 中国科学院上海光学精密机械研究所 | Binary channels dual wavelength interference checking device |
| CN111323926A (en) * | 2020-04-07 | 2020-06-23 | 中国科学院半导体研究所 | Gaussian beam shaping mirror, optical system and application thereof |
| CN111323926B (en) * | 2020-04-07 | 2021-05-11 | 中国科学院半导体研究所 | Gaussian beam shaping mirror, optical system and application thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 101111, Beijing, Tongzhou District No. 5 light light electrical and mechanical integration industry base, light four Street No. Patentee after: BEIJING SCITLION TECHNOLOGY Corp.,Ltd. Address before: 101111, Beijing, Tongzhou District No. 5 light light electrical and mechanical integration industry base, light four Street No. Patentee before: BEIJING SCITLION TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
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| CX01 | Expiry of patent term |