CN107526150B - Glass body, corner cube and production and assembly method thereof - Google Patents
Glass body, corner cube and production and assembly method thereof Download PDFInfo
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- CN107526150B CN107526150B CN201710969980.XA CN201710969980A CN107526150B CN 107526150 B CN107526150 B CN 107526150B CN 201710969980 A CN201710969980 A CN 201710969980A CN 107526150 B CN107526150 B CN 107526150B
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- plane
- reflector
- corner cube
- glass body
- spherical shell
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention provides a glass body with low cost and high precision and a corner cube comprising the glass body. The glass body, the first plane intersects with the second plane, the third plane, the cambered surface, the fourth plane intersects with the second plane, the third plane, the cambered surface, the second plane is perpendicular to the fourth plane, the third plane is perpendicular to the fourth plane, the included angle of the first plane and the second plane is 135 degrees, the included angle of the first plane and the third plane is 135 degrees, the included angle alpha of the common edge of the first plane and the second plane and the common edge of the first plane and the third plane is 90 degrees, and the included angle beta of the common edge of the second plane and the fourth plane and the common edge of the third plane and the fourth plane is 120 degrees. The corner cube is assembled by adopting 1 optical part, is favorable for mass production on the premise of ensuring the precision, and can ensure the precision by being assembled in place without repeated adjustment during production.
Description
Technical Field
The present invention relates to a light reflector, and more particularly, to a corner cube for use with an optical measuring instrument and a method for manufacturing and assembling the same.
Background
At present, most prisms used together with optical measuring instruments (such as total stations) are pyramid prisms, glass pyramid bodies are installed in the prisms and used for reflecting ranging laser beams emitted by the measuring instruments, the ranging laser beams are reflected back into the measuring instruments in paths parallel to incident light after encountering the prisms, and the distance between the measuring instruments and the prisms is calculated according to the propagation time or phase difference of the light. Because the pyramid prism is a solid glass body, the ranging light beam can be converted back and forth in two media of air and glass, and the phenomena of reflection, refraction and the like of light are accompanied, the measuring precision is low, the light intensity returned to the measuring instrument is reduced, the measuring range of the measuring instrument is reduced, and meanwhile, the self constant error is caused due to the inconsistency of the volume, the thickness and the material of the glass pyramid body in the pyramid prism.
In addition, there is a kind of prism at present, there are three mutually perpendicular reflecting surfaces in the prism, the light beam of range finding is reflected back to the measuring instrument by three mutually perpendicular surfaces in this kind of medium of air, there is no reflection and refraction process of glass midway, the laser energy of range finding is not attenuated by the prism, because the constant of the prism of the corner does not have the relation with the volume size of the prism at the same time, there is no self constant error caused by inconsistent refractive index of glass and air either. The corner cube is mainly applied to the field of industrial measurement requiring high precision, tens of thousands of yuan or even tens of thousands of yuan are sold singly, and the high selling price prevents the product from being used in a large amount in the mapping field.
The main reasons of high price of the corner cubes are that the glass corners with high precision are difficult to manufacture, the yield is low, and at present, most of the corner cubes are formed by adopting 3 pieces of glass to be bonded and assembled and adjusted in place repeatedly, such as Chinese patent applications with application numbers 201220338247.0, 20090062015. X and 201610540905.7; yet another reason is that it is very difficult to precisely mount the reflecting center point of the glass corner to the physical center point of the spherical shell or other spherical shell.
Disclosure of Invention
The invention aims to provide a glass body with low cost and high precision and a corner cube formed by the glass body.
The invention also provides a production and assembly method of the corner cube.
The technical scheme adopted for solving the technical problems is as follows: the glass body comprises a first plane, a second plane, a third plane, a fourth plane and an arc surface, wherein the first plane is intersected with the second plane, the third plane and the arc surface, the fourth plane is intersected with the second plane, the third plane and the arc surface, the second plane is perpendicular to the fourth plane, the third plane is perpendicular to the fourth plane, the included angle between the first plane and the second plane is 135 degrees, the included angle between the first plane and the third plane is 135 degrees, the included angle alpha between the common edge of the first plane and the second plane and the common edge of the first plane and the third plane is 90 degrees, and the included angle beta between the common edge of the second plane and the fourth plane and the common edge of the third plane and the fourth plane is 120 degrees.
Further, the radius of the circular arc of the fourth plane is equal to the length of the common side of the second plane and the fourth plane, and the length of the common side of the second plane and the fourth plane is equal to the length of the common side of the third plane and the fourth plane.
Further, the first plane and the fourth plane respectively form the top surface and the bottom surface of the glass body, and the second plane, the third plane and the cambered surface form the closed side surface of the glass body.
The corner cube is formed by combining three glass bodies.
Further, the three-dimensional spherical reflector comprises a spherical shell and a reflector formed by combining three glass bodies, wherein the second plane and the third plane of each glass body are combined planes, the reflecting surface of the combined reflector is formed by the first planes of the three glass bodies, the third fourth planes of the three glass bodies form the bottom surface of the reflector, and the three cambered surfaces of the three glass bodies form a cylindrical surface of 360 degrees.
Further, the first plane of each glass body is perpendicular to the first plane of the adjacent glass body after combination.
According to the diameter of the combined reflector and the spherical shell, a metal cylinder sleeve is processed, so that the metal cylinder sleeve can be precisely assembled into the reflector and can be matched with the spherical shell for installation, and the reflection center of the reflector is overlapped with the center of the spherical shell; then, three glass bodies are assembled into the metal cylindrical sleeve, so that the bottom surface of the assembled reflector is tightly adhered to the bottom surface of the metal cylindrical sleeve, and the cylindrical surface of the reflector is tightly adhered to the wall of the metal cylindrical sleeve; and then the metal cylinder with the reflector is sleeved in the spherical shell.
A method for manufacturing and assembling corner prism includes machining a cylindrical cavity matched with a reflector in a spherical shell, closely adhering the bottom surface of the reflector to the bottom surface of the cylindrical cavity, closely adhering the cylindrical surface of the reflector to the wall of the cylindrical cavity, and setting the depth of the cavity according to the geometric position of the center of the reflector to ensure that the reflecting center of the reflector coincides with the center of the spherical shell after the reflector is installed in place.
The beneficial effects of the invention are as follows: the corner cube is assembled by adopting 1 optical part, and mass production is facilitated on the premise of ensuring the precision; the accuracy can be ensured by assembling the corner prism without repeated adjustment during production and manufacture, and the technical requirement on an assembling link is reduced, thereby being beneficial to controlling the overall cost.
Drawings
FIG. 1 is a front view of a glass body of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a bottom view of fig. 1.
Fig. 4 is a left side view of fig. 1.
Fig. 5 is a right side view of fig. 1.
Fig. 6 is a rear view of fig. 1.
Fig. 7 is a perspective view of a reflector formed by combining three glass bodies according to the present invention.
Fig. 8 is a perspective view of the other direction of fig. 7.
Fig. 9 is a front view of the corner cube according to the present invention.
Fig. 10 is a cross-sectional view of fig. 9.
Fig. 11 is a right side view of fig. 9.
Fig. 12 is a perspective view of the corner cube according to the present invention.
Fig. 13 is a perspective view of another direction of the corner cube according to the present invention.
Detailed Description
As shown in fig. 1-6, the glass body of the present invention is formed by a first plane 1, a second plane 2, a third plane 3, a fourth plane 4 and an arc surface 5, wherein the first plane 1 is intersected with the second plane 2, the third plane 3 and the arc surface 5 respectively, the fourth plane 4 is intersected with the second plane 2, the third plane 3 and the arc surface 5 respectively, the first plane 1 and the fourth plane 4 are respectively formed into the top surface and the bottom surface of the glass body, and the second plane 2, the third plane 3 and the arc surface 5 are formed into the closed side surface of the glass body. The second plane 2 is perpendicular to the fourth plane 4, the third plane 3 is perpendicular to the fourth plane 4, the included angle between the first plane 1 and the second plane 2 is 135 degrees, the included angle between the first plane 1 and the third plane 3 is 135 degrees, the included angle alpha between the common edge of the first plane 1 and the second plane 2 and the common edge of the first plane 1 and the third plane 3 is 90 degrees, as shown in fig. 1, the included angle beta between the common edge of the second plane 2 and the fourth plane 4 and the common edge of the third plane 3 and the fourth plane 4 is 120 degrees, as shown in fig. 5, namely, the fourth plane 4 is a sector of 120 degrees.
The radius of the circular arc of the fourth plane 4 is equal to the length of the common edge of the second plane 2 and the fourth plane 4, and the length of the common edge of the second plane 2 and the fourth plane 4 is equal to the length of the common edge of the third plane 3 and the fourth plane 4.
The cambered surface 5 is provided with a chamfer 7, so that the assembly is facilitated, and the damage to the hands or the breakage of the glass body during the assembly is avoided.
The corner cube of the invention is formed by combining three glass bodies, and concretely comprises a spherical shell 6 and a cylindrical structure body (namely, a reflector) formed by combining the three glass bodies, as shown in fig. 7-13, wherein a second plane 2 and a third plane 3 of each glass body are combined planes (sticking planes), the reflecting surfaces of the combined reflector are formed by first planes 1 of the three glass bodies, and the three first planes 1 form an included angle of 90 degrees with each other. Three fourth planes 4 of the three glass bodies form the bottom surface of the reflector, and three cambered surfaces 5 of the three glass bodies form a 360-degree cylindrical surface. Because the first plane 1 of each glass body has two sides perpendicular to each other, when combined, the first plane 1 of each glass body is perpendicular to the first plane 1 of the adjacent glass body.
The production and assembly methods of the corner cube of the invention are two, one method is: firstly, processing a metal cylinder sleeve according to the diameter of the combined reflector and the spherical shell 6, so that the metal cylinder sleeve can be precisely assembled into the reflector and can be matched with the spherical shell 6, and the reflection center of the reflector is overlapped with the center of the spherical shell 6; three glass bodies are assembled into the metal cylindrical sleeve, so that the bottom surface of the assembled reflector is tightly adhered to the bottom surface of the metal cylindrical sleeve, and the cylindrical surface of the reflector is tightly adhered to the wall of the metal cylindrical sleeve; and then the metal cylindrical sleeve with the reflector is arranged in the spherical shell 6, and the geometric relationship between the reflecting center of the reflector assembled in the metal cylindrical sleeve and the spherical shell 6 is considered when the size of the metal cylindrical sleeve is designed, so that the reflecting center of the reflector and the spherical shell center are positioned at the same position when the metal cylindrical sleeve with the reflector is fixed in the spherical shell 6 by using a screw or other modes.
The production and assembly method is as follows: a cylindrical cavity matched with the reflector is directly processed in the spherical shell 6, the bottom surface of the reflector is closely attached to the bottom surface of the cylindrical cavity, the cylindrical surface of the reflector is closely attached to the wall of the cylindrical cavity, and the depth of the cavity is set according to the central geometric position of the reflector, so that the reflection center of the reflector is ensured to coincide with the center of the spherical shell 6 after the reflector is installed in place.
The invention can be used for forming the reflector of the corner cube by firstly producing an optical glass part and then assembling by using the same three glass bodies, wherein the reflector can be in a form of firstly assembling the reflector into a component, then assembling the component into the spherical shell 6 to form the final corner cube, and also can be directly assembled into the spherical shell 6 to form the corner cube. Both assembly schemes are used for controlling the machining precision and reducing the assembly difficulty, thereby reducing the production cost and improving the yield.
Claims (6)
1. A glass body for a corner cube, characterized in that: the sealing body is formed by a first plane (1), a second plane (2), a third plane (3), a fourth plane (4) and an arc surface (5), wherein the first plane (1) is intersected with the second plane (2), the third plane (3) and the arc surface (5), the fourth plane (4) is intersected with the second plane (2), the third plane (3) and the arc surface (5), the second plane (2) is perpendicular to the fourth plane (4), the third plane (3) is perpendicular to the fourth plane (4), the included angle between the first plane (1) and the second plane (2) is 135 degrees, the included angle alpha between the public edge of the first plane (1) and the second plane (2) and the public edge of the first plane (1) and the third plane (3) is 90 degrees, the included angle alpha between the public edge of the second plane (2) and the fourth plane (4) and the public edge of the third plane (3) and the fourth plane (4) is equal to the fourth plane (4) in length, and the length of the common edge of the second plane (2) and the fourth plane (4) is equal to that of the common edge of the third plane (3) and the fourth plane (4), the first plane (1) and the fourth plane (4) respectively form the top surface and the bottom surface of the glass body, and the second plane (2), the third plane (3) and the cambered surface (5) form the closed side surface of the glass body.
2. Corner cube, its characterized in that: a combination of three glass bodies according to claim 1.
3. The corner cube according to claim 2, wherein: the reflecting surface of the combined reflector is composed of three first planes (1) of the glass bodies, three fourth planes (4) of the three glass bodies form the bottom surface of the reflector, and three cambered surfaces (5) of the three glass bodies form a cylindrical surface of 360 degrees.
4. A corner cube according to claim 2 or 3, characterized in that: when combined, the first plane (1) of each glass body is perpendicular to the first plane (1) of the adjacent glass body.
5. A method for producing and assembling a corner cube according to any one of claims 2 to 4, characterized in that: firstly, according to the diameter of the combined reflector and the spherical shell (6), a metal cylinder sleeve is processed, so that the metal cylinder sleeve can be precisely assembled into the reflector and can be matched with the spherical shell (6), and the reflecting center of the reflector is overlapped with the center of the spherical shell (6); then, three glass bodies are assembled into the metal cylindrical sleeve, so that the bottom surface of the assembled reflector is tightly adhered to the bottom surface of the metal cylindrical sleeve, and the cylindrical surface of the reflector is tightly adhered to the wall of the metal cylindrical sleeve; and then the metal cylinder with the reflector is sleeved in the spherical shell (6).
6. The method for manufacturing and assembling a corner cube according to claim 5, wherein: a cylindrical cavity matched with the reflector is processed in the spherical shell (6), the bottom surface of the reflector is closely attached to the bottom surface of the cylindrical cavity, the cylindrical surface of the reflector is closely attached to the wall of the cylindrical cavity, and the depth of the cavity is set according to the geometric position of the center of the reflector, so that the reflecting center of the reflector is ensured to coincide with the center of the spherical shell (6) after the reflector is installed in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969980.XA CN107526150B (en) | 2017-10-18 | 2017-10-18 | Glass body, corner cube and production and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969980.XA CN107526150B (en) | 2017-10-18 | 2017-10-18 | Glass body, corner cube and production and assembly method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN107526150A CN107526150A (en) | 2017-12-29 |
| CN107526150B true CN107526150B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9414634U1 (en) * | 1994-09-09 | 1996-01-18 | Technoglas Neuhaus Gmbh | Optics module with optional adjustment, especially retroreflector |
| JP2008079689A (en) * | 2006-09-26 | 2008-04-10 | Citizen Holdings Co Ltd | Pulse wave detection sensor |
| JP2009204557A (en) * | 2008-02-29 | 2009-09-10 | Topcon Corp | Omnibearing reflector device |
| CN101598825A (en) * | 2009-05-08 | 2009-12-09 | 中国地震局地震研究所 | The high precision hollow prism reflector device |
| CN201359652Y (en) * | 2009-03-02 | 2009-12-09 | 天津工程师范学院 | Cube-corner prism fixing device |
| CN202351439U (en) * | 2011-11-21 | 2012-07-25 | 苏州华帝光学科技有限公司 | High precision pyramid prism |
| CN207249221U (en) * | 2017-10-18 | 2018-04-17 | 四川捷联芯创科技有限公司 | Vitreum and corner cube |
-
2017
- 2017-10-18 CN CN201710969980.XA patent/CN107526150B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9414634U1 (en) * | 1994-09-09 | 1996-01-18 | Technoglas Neuhaus Gmbh | Optics module with optional adjustment, especially retroreflector |
| JP2008079689A (en) * | 2006-09-26 | 2008-04-10 | Citizen Holdings Co Ltd | Pulse wave detection sensor |
| JP2009204557A (en) * | 2008-02-29 | 2009-09-10 | Topcon Corp | Omnibearing reflector device |
| CN201359652Y (en) * | 2009-03-02 | 2009-12-09 | 天津工程师范学院 | Cube-corner prism fixing device |
| CN101598825A (en) * | 2009-05-08 | 2009-12-09 | 中国地震局地震研究所 | The high precision hollow prism reflector device |
| CN202351439U (en) * | 2011-11-21 | 2012-07-25 | 苏州华帝光学科技有限公司 | High precision pyramid prism |
| CN207249221U (en) * | 2017-10-18 | 2018-04-17 | 四川捷联芯创科技有限公司 | Vitreum and corner cube |
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| Publication number | Publication date |
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| CN107526150A (en) | 2017-12-29 |
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