CN202815297U - Air medium split type three-dimensional right angle head - Google Patents
Air medium split type three-dimensional right angle head Download PDFInfo
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- CN202815297U CN202815297U CN201220442140.0U CN201220442140U CN202815297U CN 202815297 U CN202815297 U CN 202815297U CN 201220442140 U CN201220442140 U CN 201220442140U CN 202815297 U CN202815297 U CN 202815297U
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- reflective mirror
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Abstract
The present utility model provides an air medium split type three-dimensional right angle head. An incident light hole is arranged on the side surface of a shell body; a first reflective mirror and a second reflective mirror are respectively fixed on lower surfaces of two upper reflective mirror stands, the two upper reflective mirror stands are fixed on the lower surface of an upper pedestal, the included angle between reflective surfaces of the first reflective mirror and the second reflective mirror is 45 degrees; a third reflective mirror and a fourth reflective mirror are respectively fixed on upper surfaces of lower reflective mirror stands, the two lower reflective mirror stands are fixed on the upper surface of a lower pedestal, reflective surfaces of the third reflective mirror and the fourth reflective mirror are all vertical with the lower pedestal, the included angle between the reflective surfaces of the third reflective mirror and the fourth reflective mirror is 45 degrees; and the upper pedestal and the lower pedestal are respectively and fixedly connected with upper and lower installing surfaces of the shell body. The right angle head has strong temperature environment adaptability, the using environment can be enlarged to fields, a large aperture can be made, and the use is convenient.
Description
Technical field
The utility model belongs to geometric sense measurement of angle field, relates to a kind of three-directional optical square, particularly relates to a kind of air dielectric three-directional optical square.
Background technology
Three-directional optical square is the important accessory of collimating telescope or autocollimator quasi-instrument, can make the incident directional light be divided into three beams and transfers, transmits by accurate right angle, is mainly used to set up plane or the straight line perpendicular or parallel with benchmark optics sight line.
Three-directional optical square commonly used is by a glass pentaprism and be glued at that wedge mirror on its semi-transparent semi-reflecting workplace forms, and its version and schematic diagram are seen Fig. 1 and Fig. 2.The workplace of pentaprism is three of A, B and C, and workplace all plates semi-transparent semi-reflecting film, and namely light arrives this face half light transmission, half light reflection.The incident light of testing tool is divided into the three beams emergent light by three transmissions and reflection ray, and emergent light forward is consistent with the incident light direction of propagation, and the emergent light of left and right directions is vertical with incident light.The face pentaprism guarantees 90 ° of the accurate corners of optics direct-view sight line, and gummed wedge mirror makes the craspedodrome outgoing of not turning back of optics direct-view sight line.When changing pentaprism workplace angle value, also can be made into non-90 ° particular beam deflection angle device.
In engineering was used, general integrated formula three-directional optical square had following limitation:
(1) when clear aperture increases, because the light path of light in glass increases, glass also increases the absorption of luminous energy, and remarkable greater than the energy loss of φ 30mm time when clear aperture, this structure is not suitable for the occasion larger to the clear aperture requirement.
(2) since light repeatedly transmission and the reflection emergent light luminous energy can greatly lower, the emergent light energy is 1/2 of incident light before among Fig. 1, left emergent light energy is 1/8 of incident light energy, right emergent light energy is 1/16 of incident light energy, because the emergent light energy loss is larger, requirement meeting to testing tool and reflective mirror is very high, and applicability is lower.
(3) 90 ° of need of the accurate corner of optics sight line meet the following conditions: a) B, C two reflectings surface angle at 45 °, 67.5 ° of A and B face angles; B) three reflectings surface are all perpendicular to the baseplane, and this requirement often is called " tower is poor "; The flatness of c, three reflective surfaces.And the glass pentaprism is owing to make with monolithic glass, and three reflectings surface should guarantee that angle is accurate, guarantee again perpendicular to same plane, be difficult on the technique realize, in case and plated film, can't repair.Because the impact of " tower is poor " is difficult to realize accurate corner.
(4) emergent light is because light deflection or translation also can occur in the impact of glass pentaprism and wedge mirror, and the pentaprism group is difficult to guarantee that light does not change by rear direction of transfer.
Summary of the invention
The purpose of this utility model is to provide a kind of raising accuracy of measurement, reduces simultaneously manufacturing cost, improves the split type three-directional optical square of air dielectric of optical delivery quality and expansion usable range.
Realize the technical scheme of the utility model purpose: the split type three-directional optical square of a kind of air dielectric, it comprises the housing that hollow is rectangular-shaped, offers entrance pupil in the side of housing; The first reflective mirror and the second reflective mirror are separately fixed on two upper mirror base lower surfaces, and two upper mirror bases are fixed on the top base lower surface, and the first reflective mirror is all vertical with top base with the second reflective mirror reflective surface, and verticality is not more than 2 "; Angle between the first reflective mirror and the second reflective mirror reflective surface is 45 °, and 45 ° of angle error are not more than 1 ";
The 3rd reflective mirror and the 4th reflective mirror are separately fixed on the lower mirror base upper surface, and two lower mirror bases are fixed on the bottom base upper surface, and the 3rd reflective mirror is all vertical with bottom base with the 4th reflective mirror reflective surface, and verticality is not more than 2 "; Angle between the 3rd reflective mirror and the 4th reflective mirror reflective surface is 45 °, and 45 ° of angle error are not more than 1 ";
Up and down two installed surfaces of top base and bottom base and housing are connected respectively; After the installation, the first reflective mirror of upper part and the second reflective mirror, and the 3rd reflective mirror of lower part and the 4th reflective mirror between a logical optical slits is arranged.
The split type three-directional optical square of aforesaid a kind of air dielectric, it is at the incident light hole place of housing, and by centering level crossing of permanent magnet adhesive, two installed surfaces were vertical up and down with housing after the centering level crossing was loaded onto.
The split type three-directional optical square of aforesaid a kind of air dielectric, its described centering level crossing material is 9Cr18, vacuum hardening, quenching hardness HRC58-62 grinds reflective surface, makes its flatness be not more than 0.1um.
The split type three-directional optical square of aforesaid a kind of air dielectric, up and down two installed surfaces of its described housing (4) are parallel, and the depth of parallelism is not more than 0.002mm, and the entrance pupil place face of housing is vertical with lower installed surface, and verticality is not more than 0.002mm.
The split type three-directional optical square of aforesaid a kind of air dielectric, its described housing, top base, bottom base, upper mirror base and lower reflective mirror all adopt Nb-invar Steel material.
Effect of the present utility model is: the split type three-directional optical square of air dielectric described in the utility model has following characteristics: (1) main parts size adopts the very little invar steel making of temperature expansion coefficient, reflective mirror adopts the devitrified glass manufacturing, instrument because of the angle measurement error that temperature variation (5～35 ℃) causes be not more than ± 1 "; the temperature environment strong adaptability of device, can expand the environment for use of instrument to field.(2) can be made into larger clear aperture, easy to use.Because the medium between two reflectings surface is air, there is not the luminous energy absorption loss of long light path in the glass, therefore can be made into larger clear aperture, be easy to captured target, front, left and right emergent light light intensity equates to be 1/3 of incident light light intensity.(3) the single face reflectivity of right-angle head can be brought up to more than 98%, and the work measuring distance can reach 20m.(4) 90 ° of angular errors of emergent light and incident light are not more than 2 ", in the perpendicular plane of 90 ° of corner planes, the depth of parallelism of emergent light and incident light is not more than 3 ".(5) when split type right-angle head location deflection, can significantly reduce the variable quantity of autocollimation picture.The pedestal sole plane touch dull and stereotyped when swinging ± 5 °, and the variable quantity of autocollimator detected value is not more than ± and 1 ".(6) carry out centering by centering reflective mirror and the upper and lower substrate basal plane of right-angle head after, the three beams emergent light that instrument light is told and the verticality of pentaprism crest line all are not more than 3 ", greatly improved the accuracy of measurement of instrument.
Description of drawings
Fig. 1 is integral glass three-directional optical square structural drawing;
Fig. 2 is integral glass three-directional optical square schematic diagram;
Fig. 3 is the split type three-directional optical square overall diagram of air dielectric described in the utility model;
Fig. 4 is the split type three-directional optical square exploded view of air dielectric described in the utility model;
Fig. 5 is the split type three-directional optical square of air dielectric top path-splitting figure;
Fig. 6 is the split type three-directional optical square of air dielectric bottom path-splitting figure;
Among the figure: 1, top base; 2, upper mirror base; 3, the first reflective mirror; 4, housing; 5, centering level crossing; 6, the 3rd reflective mirror; 7, bottom base; 8, lower mirror base; 9, the 4th reflective mirror; 10, the second reflective mirror.
Embodiment
Below in conjunction with the drawings and specific embodiments the split type three-directional optical square of air dielectric described in the utility model is further described.
As shown in Figure 3 and Figure 4, the split type three-directional optical square of air dielectric described in the utility model comprises housing 4, top base 1, bottom base 7, upper mirror base 2, lower mirror base 8 and four reflective mirrors 3,10,6 and 9.
Centering level crossing 5 materials are 9Cr18, vacuum hardening, and quenching hardness HRC58-62 grinds reflective surface, makes its flatness be not more than 0.1um; Centering level crossing 5 is pull-in on housing 4 incident light hole places by the permanent magnet that embeds wherein, after guaranteeing to load onto with housing about in the of 4 installed surface vertical.Centering level crossing 5 only uses when centering, in case centering is finished, namely takes down the centering level crossing, guarantees that entrance pupil can lead to light.
The first reflective mirror 3 is in the same place by the lower surface bonds of optical texture glue and two upper mirror bases 2 respectively with the second reflective mirror 10, mirror base 2 uses screw to be connected with the lower surface of top base 1 on two, by grinding upper mirror base 2, the first reflective mirror 3 is all vertical with top base 1 with the second reflective mirror 10 reflective surfaces after guaranteeing to install, and verticality is not more than 2 "; Adjust mounting screw, making the angle between the first reflective mirror 3 and the second reflective mirror 10 reflective surfaces is 45 °, and 45 ° of angle error are not more than 1 ".
Equally, the 3rd reflective mirror 6 and the 4th reflective mirror 9 bond together by the upper surface of optical texture glue and lower mirror base 8, then be connected by the upper surface use screw of lower mirror base 8 with bottom base 7, by grinding lower mirror base 8, the 3rd reflective mirror 6 is all vertical with bottom base 7 with the 4th reflective mirror 9 reflective surfaces after guaranteeing to install, and verticality is not more than 2 "; Adjust mounting screw, the angle between the 3rd reflective mirror 6 and the 4th reflective mirror 9 reflective surfaces is 45 °, and 45 ° of angle error are not more than 1 ".
Grind up and down two installed surfaces and the entrance pupil place face outside surface of housing 4, two installed surfaces are parallel up and down to make it, and the depth of parallelism is not more than 0.002mm, and entrance pupil place face is vertical with lower installed surface, and verticality is not more than 0.002mm.
As shown in Figure 5 and Figure 6, when the split type three-directional optical square of air dielectric described in the utility model uses, with photogoniometer device optical axis alignment entrance pupils such as collimating telescope or photoelectric auto-collimators, incident ray is directly by slit outgoing between upper and lower reflective mirror, remainder divides again up and down two parts, outgoing after top lease making reflective mirror III, the reflective mirror IV reflection, emergent light becomes 90 ° of angles with incident light; Outgoing after bottom lease making reflective mirror I, the reflective mirror II reflection, emergent light becomes 90 ° of angles with incident light.
The split type three-directional optical square of air dielectric described in the utility model: (1) adopts hollow right-angle head design proposal, and light is propagated in air dielectric all the time, farthest reduces the loss of luminous energy.(2) emergent ray according to the collimation quasi-instrument is the characteristics of directional light, and hollow right-angle head can be cut into three beams with a branch of directional light, as long as reduce reflecting surface " tower is poor ", emergent light with perpendicular plane, right angle in the depth of parallelism can guarantee.(3) mode of abandoning monoblock type pentaprism group adopts the mode of split type pentaprism, be convenient to improve 90 ° of corners or fixedly corner accuracy, reduce simultaneously the impact of " tower is poor ", improve measuring accuracy, improve environmental suitability, simplified structure also reduces and makes debugging cost.(4) remove the wedge mirror, avoid light deflection or the translation of light because occuring by glass medium.Leave a slit between two pentaprisms up and down, light can carry out rectilinear propagation by slit, and like this, the incident directional light just is divided into three-beam, and two bundle emergent lights are vertical with incident light, and light beam is along the outgoing of incident light direction.
The split type three-directional optical square of air dielectric described in the utility model: the mode that (1) adopts glass plating deielectric-coating to make reflective mirror improves reflectivity, plate corresponding deielectric-coating according to the difference of surveying instrument optical source wavelength, can improve reflectivity (ranging up to 98%), adapt to like this measurement than distant object, also can adapt to the measurement situation that target reflective mirror reflectivity is low or flatness is poor.(2) by repairing the metal installation base of grinding glass mirror and the surface of contact of base plate, guarantee that reflecting surface and the verticality of base plate bottom surface are " tower is poor " (being not more than 2 〞), parallel in vertical direction with incident light with the emergent light that guarantees 90 ° of corners.(3) adopt the up and down mode of two split pentaprisms, make two to right-angle head, i.e. instrument outgoing direct-view sight line is divided into two and restraints the turn back sight line perpendicular with the direct-view sight line.(4) employing leaves light hole between two split pentaprisms up and down, namely leave the mode of light hole in light direct-view direction, can be made into the three-directional optical square device, i.e. instrument outgoing direct-view sight line is divided into direct-view sight line and two bundles turn back sight line three parts vertical with the direct-view sight line.(5) entering perforation place placement centering level crossing, when incident ray overlapped with centering reflective mirror normal, incident ray was namely vertical with pentaprism crest line in the right-angle head, can carry out thick centering.Two base plate basal planes are all vertical with the pentaprism crest line up and down for right-angle head, are convenient to the accurate centering of the placement location of right-angle head.
Claims (5)
1. split type three-directional optical square of air dielectric, it is characterized in that: it comprises the rectangular-shaped housing of hollow (4), offers entrance pupil in the side of housing (4);
The first reflective mirror (3) and the second reflective mirror (10) are separately fixed on two upper mirror base (2) lower surfaces, two upper mirror bases (2) are fixed on top base (1) lower surface, the first reflective mirror (3) is all vertical with top base (1) with the second reflective mirror (10) reflective surface, and verticality is not more than 2 "; Angle between the first reflective mirror (3) and the second reflective mirror (10) reflective surface is 45 °, and 45 ° of angle error are not more than 1 ";
The 3rd reflective mirror (6) and the 4th reflective mirror (9) are separately fixed on lower mirror base (8) upper surface, two lower mirror bases (8) are fixed on bottom base (7) upper surface, the 3rd reflective mirror (6) is all vertical with bottom base (7) with the 4th reflective mirror (9) reflective surface, and verticality is not more than 2 "; Angle between the 3rd reflective mirror (6) and the 4th reflective mirror (9) reflective surface is 45 °, and 45 ° of angle error are not more than 1 ";
Top base (1) and bottom base (7) are connected respectively with up and down two installed surfaces of housing (4); After the installation, first reflective mirror (3) of upper part and the second reflective mirror (10), and the 3rd reflective mirror (6) of lower part and the 4th reflective mirror (9) between a logical optical slits is arranged.
2. the split type three-directional optical square of a kind of air dielectric according to claim 1, it is characterized in that: at the incident light hole place of housing (4), by a centering level crossing of permanent magnet adhesive (5), two installed surfaces were vertical up and down with housing (4) after centering level crossing (5) was loaded onto.
3. the split type three-directional optical square of a kind of air dielectric according to claim 2, it is characterized in that: described centering level crossing (5) material is 9Cr18, vacuum hardening, quenching hardness HRC58-62 grinds reflective surface, makes its flatness be not more than 0.1um.
4. the split type three-directional optical square of a kind of air dielectric according to claim 1, it is characterized in that: up and down two installed surfaces of described housing (4) are parallel, the depth of parallelism is not more than 0.002mm, and the entrance pupil place face of housing (4) is vertical with lower installed surface, and verticality is not more than 0.002mm.
5. the split type three-directional optical square of a kind of air dielectric according to claim 1, it is characterized in that: described housing (4), top base (1), bottom base (7), upper mirror base (2) and lower reflective mirror (8) all adopt Nb-invar Steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220442140.0U CN202815297U (en) | 2012-08-31 | 2012-08-31 | Air medium split type three-dimensional right angle head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220442140.0U CN202815297U (en) | 2012-08-31 | 2012-08-31 | Air medium split type three-dimensional right angle head |
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| Publication Number | Publication Date |
|---|---|
| CN202815297U true CN202815297U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220442140.0U Withdrawn - After Issue CN202815297U (en) | 2012-08-31 | 2012-08-31 | Air medium split type three-dimensional right angle head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202815297U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830483A (en) * | 2012-08-31 | 2012-12-19 | 北京航天计量测试技术研究所 | Air dielectric split type three-way right-angle head |
| CN114354509A (en) * | 2022-01-06 | 2022-04-15 | 安徽庆宇光电科技有限公司 | Infrared laser adjusting structure |
-
2012
- 2012-08-31 CN CN201220442140.0U patent/CN202815297U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830483A (en) * | 2012-08-31 | 2012-12-19 | 北京航天计量测试技术研究所 | Air dielectric split type three-way right-angle head |
| CN102830483B (en) * | 2012-08-31 | 2014-12-10 | 北京航天计量测试技术研究所 | Air dielectric split type three-way right-angle head |
| CN114354509A (en) * | 2022-01-06 | 2022-04-15 | 安徽庆宇光电科技有限公司 | Infrared laser adjusting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20141210 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20141210 |
|
| RGAV | Abandon patent right to avoid regrant |