CN101609175A - Bidirectional spherical prism - Google Patents
Bidirectional spherical prism Download PDFInfo
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- CN101609175A CN101609175A CNA2009101156961A CN200910115696A CN101609175A CN 101609175 A CN101609175 A CN 101609175A CN A2009101156961 A CNA2009101156961 A CN A2009101156961A CN 200910115696 A CN200910115696 A CN 200910115696A CN 101609175 A CN101609175 A CN 101609175A
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- prism
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- pyramid
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Abstract
A kind of bidirectional spherical prism, belong to optical technical field, it is characterized in that spherical housing body [1] by a band cylindrical hole, two symmetries are installed in the optical prism pyramid [2] in the spheroid central cylindrical hole, pyramid spacer assembly [3] and axial location adjusting gear [4] are formed, wherein the optical reflection center of two prism of corner cubes overlaps with 3 of ball centre, vertically overlapping with the centre of sphere of bidirectional spherical prism of the present invention with the intersection point of horizontal revolving shaft, and with forward direction and the back overlap to the optical reflection center of prism pyramid, can thoroughly eliminate prism structure theoretically, lay, the error that aspects such as revolution exist, good reproducibility.Spherical shell can provide reliable positioning point for other measuring method, needn't carry out the secondary conversion by means of special machine equipment.
Description
Technical field
The invention belongs to optical technical field, particularly the precision optics prism.
Background technology
The optics prism of corner cube is widely used in precision measurement fields such as the laser ranging of visible light, ultraviolet or infrared band, infrared tracking, sensor apparatus.
The most significant characteristic of prism of corner cube is: the incident light that shines on the prism of corner cube will return by former input path.
On the engineering, often the prism angle cone is installed in plastics or the metallic housing, constitutes the reflecting prism of a commercialization.Reflecting prism is normal to be used in combination with prism frame, constitutes a complete prism group, and is placed on the position, measured point by connector (prism bracket), make reflecting prism can around vertically with horizontal two revolving shaftes rotation, adjust to easily towards the incident direction of light.
Theoretically, two revolving shaftes of prism group spatially should intersect, and the optical reflection center of prism pyramid also should just in time be dropped on two the intersection point.This point is exactly laying a little of prism, the i.e. measurement point of optical instrument.
But, often there is certain design deviation or makes alignment error between the optical reflection center of prism and two intersection points, need carry out precision calibration, revise or compensate by the software addition constant.
Two also may be because the reason of making or installing be spatially also non-intersect, but forms the position relation that the space interlaces, and adds that there are numerous reasons such as certain clearance in revolving shaft, has brought more uncertain factor for the precision of finally laying of prism.
Simultaneously, laying of prism a little is a spatial point, on prism connector, prism frame or reflecting prism, all can't find the corresponding point (as measure the elevation coordinate of this point by precision level) of direct, available other measuring method location generally speaking, and must carry out the secondary conversion, thereby introduce transformed error by means of special machine equipment.
Summary of the invention
The object of the present invention is to provide a kind of accurate bidirectional spherical prism.This prism can positive and negative two-way simultaneous or is successively sighted by optical gauge and do not need to rotate prism, is applicable to adopt two total powerstations simultaneously or successively the same mirror point of putting to be carried out repetition, intersects observation etc.Simultaneously, this prism does not need to be used in combination with prism frame, whole no relative movement part, the connector of laying prism also only is the circular hole aperture of a suitable diameter, vertical and the horizontal centre of gyration of prism is exactly the centre of sphere of spherical housing, and overlap with the optical reflection center of two prism of corner cubes is strict, can thoroughly eliminate prism structure, installation, turn error theoretically.
Bidirectional spherical prism of the present invention, be made up of the spherical housing body [1] of a band cylindrical hole, optical prism pyramid [2], pyramid spacer assembly [3] and the axial location adjusting gear [4] that two symmetries are installed in the spheroid central cylindrical hole, wherein the optical reflection center of two prism of corner cubes overlaps with 3 of ball centre.
Spherical housing body of the present invention [1] adopts has ferromagnetic material, as stainless steel, carbon steel etc.When employing has ferrimagnet, can on the position of connector, settle a permanent magnet, utilize the relative position relation between magnetic adsorptive power maintenance prism and the connector.
Spherical housing body of the present invention [1], its spherical housing material also can be by ferromagnetic other metal materials of tool or nonmetallic materials do not replace.At this moment, prism is placed on the connector, can utilize the deadweight of spheroid, also can increase external force such as resilient clamp power and keep relative position relation between prism and the connector.
More particularly, the present invention realizes by following steps.
(1) overall appearance of prism is a precision machined spheroid;
(2) central authorities of spheroid process a diameter and the corresponding through hole of prism pyramid size;
(3) in the through hole of spheroid central authorities, symmetry is installed with two optical prism pyramids [1], pyramid spacer assembly [2] and axial location precision adjustment unit [3].Through precision calibration and adjustment, the optical reflection center of two prism pyramids overlaps with the centre of sphere is strict;
(4) spherical prism does not need to be used in combination with prism frame, can directly be placed on the prism connector that only constitutes by simple circular hole aperture, utilize the matching relationship between spheroid and aperture, guarantee uniqueness and spheroid vertical, the horizontal free rotating degree of freedom of ball centre position with respect to connector;
Advantage of the present invention is: the vertical intersection point with horizontal revolving shaft of spherical prism overlaps with the centre of sphere, and with forward direction and the back overlap to the optical reflection center of prism pyramid, the error that can thoroughly eliminate prism structure theoretically, lay, aspect such as revolution exists, good reproducibility.Spherical shell can be for other measuring method provides reliable positioning point, as measure the elevation coordinate time of this point by precision level, the indium steel ruler can directly be placed on the spherical prism shell, and needn't carry out secondary conversion by means of special machine equipment.
Description of drawings
Accompanying drawing is the centre of sphere cutting plane synoptic diagram of bidirectional spherical prism structure of the present invention.Wherein, 1 is spherical shell, and 2 is the prism angle cone, and 3 is the pyramid spacer assembly, and 4 is the axial location adjusting gear.
Embodiment
The present invention will be described further by following examples.
Embodiment.
As shown in drawings, the described bidirectional spherical prism of present embodiment, form by prism angle cone 2, pyramid spacer assembly 3, axial location adjusting gear 4 that spherical shell 1, two symmetries are installed, wherein the prism angle cone 2 usefulness pyramid spacer assemblys 3 of two symmetry installations separate, be installed in the center pit of spherical shell 1, by the axial location adjusting gear 4 of two ends, the optical reflection center of prism angle cone 2 is overlapped with the centre of sphere of spherical shell 1.
Claims (4)
1, a kind of bidirectional spherical prism, it is characterized in that being made up of the spherical housing body [1] of a band cylindrical hole, optical prism pyramid [2], pyramid spacer assembly [3] and the axial location adjusting gear [4] that two symmetries are installed in the spheroid central cylindrical hole, wherein the optical reflection center of two prism of corner cubes overlaps with 3 of ball centre.
2, bidirectional spherical prism according to claim 1 is characterized in that described spherical housing body [1] employing has ferromagnetic material.
3, bidirectional spherical prism according to claim 1 and 2 is characterized in that described spherical housing body [1] employing has ferromagnetic stainless steel.
4, bidirectional spherical prism according to claim 1 is characterized in that described spherical housing body [1] adopts not ferromagnetic metal material of tool or nonmetallic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101156961A CN101609175A (en) | 2009-07-21 | 2009-07-21 | Bidirectional spherical prism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101156961A CN101609175A (en) | 2009-07-21 | 2009-07-21 | Bidirectional spherical prism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101609175A true CN101609175A (en) | 2009-12-23 |
Family
ID=41483000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101156961A Pending CN101609175A (en) | 2009-07-21 | 2009-07-21 | Bidirectional spherical prism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101609175A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650707A (en) * | 2011-02-28 | 2012-08-29 | 上海埃测软件有限公司 | Magnetic measurement reflection sphere with large spherical surface |
| CN104807404A (en) * | 2015-04-23 | 2015-07-29 | 北京建筑大学 | Multi-purpose spherical measuring device and automatic extract algorithm |
| CN106500666A (en) * | 2016-09-12 | 2017-03-15 | 东莞中子科学中心 | A kind of photogrammetric mark |
| CN108205194A (en) * | 2017-12-13 | 2018-06-26 | 北京华航无线电测量研究所 | A kind of visible ray based on spherical concentric primary mirror and infrared hybrid system |
-
2009
- 2009-07-21 CN CNA2009101156961A patent/CN101609175A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650707A (en) * | 2011-02-28 | 2012-08-29 | 上海埃测软件有限公司 | Magnetic measurement reflection sphere with large spherical surface |
| CN104807404A (en) * | 2015-04-23 | 2015-07-29 | 北京建筑大学 | Multi-purpose spherical measuring device and automatic extract algorithm |
| CN106500666A (en) * | 2016-09-12 | 2017-03-15 | 东莞中子科学中心 | A kind of photogrammetric mark |
| CN108205194A (en) * | 2017-12-13 | 2018-06-26 | 北京华航无线电测量研究所 | A kind of visible ray based on spherical concentric primary mirror and infrared hybrid system |
| CN108205194B (en) * | 2017-12-13 | 2020-07-17 | 北京华航无线电测量研究所 | Visible light and infrared composite system based on spherical concentric primary mirror |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20091223 |