CN2534595Y - Middle-distance optical collimator with prism - Google Patents
Middle-distance optical collimator with prism Download PDFInfo
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- CN2534595Y CN2534595Y CN 02224647 CN02224647U CN2534595Y CN 2534595 Y CN2534595 Y CN 2534595Y CN 02224647 CN02224647 CN 02224647 CN 02224647 U CN02224647 U CN 02224647U CN 2534595 Y CN2534595 Y CN 2534595Y
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- lens
- prism
- right angle
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- middle distance
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Abstract
The utility model relates to an optical collimating device, in particular to a middle distance optical collimating device with prism suitable for semi-conductive laser collimation. The utility model consists of two triple prisms and three optical lenses; wherein, the three optical lenses form a collimating device and the two triple prisms constitute a spot transfer mechanism; an optical shaft of the collimating device formed by the three optical lenses goes through the spot transfer mechanism formed by the two triple prisms.
Description
Affiliated field: the utility model relates to a kind of optical alignment device, and definite saying relates to a kind of band prism middle distance optical alignment device that is adapted to semiconductor laser collimation usefulness.
Background technology: the output beam of semiconductor laser has certain angle of divergence, this is because the principle of work of semiconductor laser determines, when semiconductor laser was used for range finding, location, the light beam of its output need collimate, to guarantee the accuracy of range finding, location.The process of collimation is that the output beam with semiconductor laser produces into a branch of light beam by the approximate parallel transmission of certain pore size behind optical lens, and the light beam after collimation is handled requires the angle of divergence the smaller the better.Fig. 1 is the embodiment by the colimated light system of desirable light source design, is positioned at the optical axis O front focus one pointolite S of a lens L, and behind desirable lens L, it is output as the light beam of a branch of parallel transmission, and the diameter of light beam is relevant with the focal length of lens.Noise spectra of semiconductor lasers or other laser instrument, the design of collimator apparatus exists following problem, one, in fact semiconductor laser or other laser light source are not ideal point light sources, but the emission light of a shape with a tight waist, therefore the optical alignment device by Fig. 1 design will can not produce desirable parallel beam; Its two, common optical lens itself exists aberration, for monochromatic source, mainly is spherical aberration, coma or distortion; Its three, requiring under the high situation of utilization ratio of optical energy, the optical system relative aperture of design is big more, it is difficult more to overcome lens aberration.Generally the relative aperture of colimated light system is about 1/10.
In addition, semiconductor laser is output as an elliptoid hot spot, needs elliptoid hot spot is processed into circular light spot under fine situation, is processed into the miniaturization design that circular light spot helps optical system.
Summary of the invention: the purpose of this utility model is a kind of capacity usage ratio height of design, and aberration is little, and angle of divergence R has the band prism middle distance optical alignment device of circular light spot output less than 0.6mrad.
The purpose of this utility model is to realize like this, design a kind of band prism middle distance optical alignment device, it is characterized in that: it is made up of two prisms, three optical lenses, three optical lenses are wherein formed surely directly device, two prisms constitute hot spot throw-over gear, the hot spot throw-over gear that the optical axis of the collimator apparatus of three optical lens compositions constitutes by two prisms.
Described three optical lenses are concave-convex lens, and the R value of the convex surface of first lens is between 10.20～11.20mm, and the R value of concave surface is between 60～61.5mm; The R value of second lens convex surface is between 5.2～5.35mm, and the R value of concave surface is between 6.60～6.77mm; The R value of the 3rd lens convex surface is between 141.5～142.5mm, and concave surface R value is between 11.00～11.80mm; Second lens and the 3rd lens plane connect with optics is gluing, and the interior centre distance of first and second lens is between 3.0～3.2, and first and the outer centre distance of the 3rd lens are between 10.00～11.
The external diameter of described first lens is _ 10 ± 0.5mm, and second external diameter with the 3rd lens is _ 8 ± 0.5mm.
The center thickness of described first lens is between 2.57～2.63mm, and the center thickness of second lens is between 1.95～2.15mm, and the center thickness of the 3rd lens is between 2.49～2.53mm.
Described lens material is ZF6.
The hot spot throw-over gear prism wherein that described two prisms constitute is right angle prism.
Acute angle of described right angle prism 37.0 °～38.7 ° be between.
The longer right-angle side of one of them right angle prism of described right angle prism is a light I/O face, and the inclined-plane of another right angle prism is a light I/O face; The longer right angle face of the inclined-plane of an above-mentioned right angle prism and another right angle prism constitutes 65 °～68 °.
The utility model has the advantages that, because the utility model adopts three lens of smaller aperture due to realize the collimation of light in optical design, composite design by three lens, overcome the influence of aberration to the hot spot image quality, form hot spot throw-over gear with two prisms, realize the round hot spot output of semiconductor laser.Less than 0.6mrad, relative aperture is much larger than 1/10 according to its angle of divergence of optical alignment device R of above-mentioned parameter design, and aberration is less than 0.003mm, and the semiconductor laser output facula of optical wavelength λ=635～650nm is a circular light spot.
Below in conjunction with the embodiment accompanying drawing the utility model is described further:
Description of drawings; Fig. 1 is the embodiment by the collimator apparatus of desirable light source design;
Fig. 2 is the utility model embodiment light path synoptic diagram;
Fig. 3 is first optics of lens lens parameter and structural representation;
Fig. 4 is second optics of lens lens parameter and structural representation;
Fig. 5 is the 3rd optics of lens lens parameter and structural representation.
Among the figure, 1, prism; 2, prism; 3, hot spot throw-over gear; 4, collimator apparatus; L
1, first slice lens; L
2, second slice lens; L
3, the 3rd slice lens.
Embodiment: as shown in Figure 2, form 4, two prisms of a collimation device by three optical lens group and constitute hot spot throw-over gear 3, the optical axis of collimator apparatus 4 is by hot spot throw-over gear 3.
Referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, three optical lens L in the collimator apparatus 4
1, L
2, L
3Be concave-convex lens, L
1The R1 value of convex surface between 10.20～11.20mm, the R2 value of concave surface is between 60～61.5mm; L
2The R3 value of lens convex surface is between 5.2～5.35mm, and the R4 value of concave surface is between 6.60～6.77mm; L
3The R5 value of lens convex surface is between 141.5～142.5mm, and concave surface R6 value is between 11.00～11.80mm; L
2, L
3The lens plane meets L with optics is gluing
1, L
2The interior centre distance of lens is between 3.0～3.2, L
1, L
3The outer centre distance of lens is between 10.00～11.L
1The external diameter of lens is _ 10 ± 0.5mm, L
2, L
3The external diameter of lens is _ 8 ± 0.5mm.L
1Center thickness be between 2.57～2.63mm, L
2Center thickness be between 1.95～2.15mm, L
3Center thickness be between 2.49～2.53mm.L
1, L
2, L
3Material is ZF6.
Two hot spot throw-over gears 3 that prism 1,2 constitutes, prism 1,2 is right angle prism.Prism 1,2 one of them right angle 37.0 °～38.7 ° be between.In Fig. 2, prism 1 longer right-angle side is a light I/O face, and the inclined-plane of prism 2 is a light I/O face; The longer right angle face of the inclined-plane of prism 1 and prism 2 constitutes 65 °～68 ° degree angles.
Claims (8)
1, band prism middle distance optical alignment device, it is characterized in that: it is made up of two prisms, three optical lenses, three optical lenses are wherein formed surely directly device, two prisms constitute hot spot throw-over gear, the hot spot throw-over gear that the optical axis of the collimator apparatus of three optical lens compositions constitutes by two prisms.
2, band prism middle distance optical alignment device according to claim 1, it is characterized in that: described three optical lenses are concave-convex lens, and the R value of the convex surface of first lens is between 10.20～11.20mm, and the R value of concave surface is between 60～61.5mm; The R value of second lens convex surface is between 5.2～5.35mm, and the R value of concave surface is between 6.60～6.77mm; The R value of the 3rd lens convex surface is between 141.5～142.5mm, and concave surface R value is between 11.00～11.80mm; Second lens and the 3rd lens plane connect with optics is gluing, and the interior centre distance of first and second lens is between 3.0～3.2, and first and the outer centre distance of the 3rd lens are between 10.00～11.
3, according to claim 1,2 described band prism middle distance optical alignment devices, it is characterized in that: the external diameter of described first lens is _ 10 ± 0.5mm, and second external diameter with the 3rd lens is _ 8 ± 0.5mm.
4, according to claim 1,2 described band prism middle distance optical alignment devices, it is characterized in that: the center thickness of described first lens is between 2.57～2.63mm, the center thickness of second lens is between 1.95～2.15mm, and the center thickness of the 3rd lens is between 2.49～2.53mm.
5, band prism middle distance optical alignment device according to claim 1, it is characterized in that: described lens material is ZF6.
6, band prism middle distance optical alignment device according to claim 1 is characterized in that: the hot spot throw-over gear prism wherein that described two prisms constitute is right angle prism.
7, according to claim 1,6 described band prism middle distance optical alignment devices, it is characterized in that: acute angle of described right angle prism 37.0 °～38.7 ° be between.
8, according to claim 1,6 described band prism middle distance optical alignment devices, it is characterized in that: the longer right-angle side of one of them right angle prism of described right angle prism is a light I/O face, and the inclined-plane of another right angle prism is a light I/O face; The longer right angle face of the inclined-plane of an above-mentioned right angle prism and another right angle prism constitutes 65 °～68 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224647 CN2534595Y (en) | 2002-03-18 | 2002-03-18 | Middle-distance optical collimator with prism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224647 CN2534595Y (en) | 2002-03-18 | 2002-03-18 | Middle-distance optical collimator with prism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2534595Y true CN2534595Y (en) | 2003-02-05 |
Family
ID=33702017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02224647 Expired - Fee Related CN2534595Y (en) | 2002-03-18 | 2002-03-18 | Middle-distance optical collimator with prism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2534595Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536150A (en) * | 2015-01-26 | 2015-04-22 | 电子科技大学 | Optical system for generating high-precision collimated hollow laser beams |
-
2002
- 2002-03-18 CN CN 02224647 patent/CN2534595Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536150A (en) * | 2015-01-26 | 2015-04-22 | 电子科技大学 | Optical system for generating high-precision collimated hollow laser beams |
| CN104536150B (en) * | 2015-01-26 | 2017-04-19 | 电子科技大学 | Optical system for generating high-precision collimated hollow laser beams |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |