Processing, shaping and modulation method of hollow retroreflector

A modulation method and retroreflector technology, applied in the field of optical instruments, can solve problems such as cumbersome process, high processing cost, and impossibility, and achieve the effect of increasing the optical opening, increasing product performance, and increasing passing efficiency
CN109856716AActive Publication Date: 2019-06-07UNION OPTIC
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
UNION OPTIC
Publication Date
2019-06-07

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Abstract

The invention discloses a processing, shaping and modulation method of a hollow retroreflector. The processing, shaping and modulation method includes the steps that firstly, a square substrate assembled with the hollow retroreflector is glued on a solid pyramid, then the whole square substrate is cut to a circle through an engraving machine or a laser cutting machine, then the inner sides of cutelliptic arc-shaped substrates are plated with metal protective films, then the elliptic arc-shaped substrates are glued on an angular accuracy adjustment platform to adjust the angular accuracy, interference fringes are observed through a laser interferometer, and the vertical angular accuracy of the three substrates in pairs is adjusted through the fringe change. By gluing the square substrate on the solid pyramid, then overall tilt circle cutting engraving is conducted through the cutting machine, a gap between the solid pyramid and the substrate is filled with glue during cutting, and thesingle irregular elliptical arc-shaped substrates can be obtained through tilt processing of the substrate in one step; and meanwhile, the fact that damage of cutting to the reflective surface of a coating film is caused, and consequently the product quality is affected is avoided, and the visual attractiveness and consistency of the hollow retroreflector are maintained while the angular accuracyis ensured.
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Description

technical field

[0001] The invention belongs to the technical field of optical instruments, and in particular relates to a method for processing, shaping and modulating a hollow retroreflector. Background technique

[0002] At present, most of the prisms used in conjunction with optical measuring instruments (such as total stations) are corner cube prisms. A glass pyramid is installed inside the prism to reflect the distance measuring laser beam emitted by the measuring instrument. Reflected back into the measuring instrument in a path parallel to the incident light, the distance between the measuring instrument and the prism is calculated based on the travel time or phase difference of the light. Since the corner cube is a solid glass body, the distance measuring beam will be converted back and forth in the two media of air and glass, accompanied by light reflection and refraction, which will lead to low measurement accuracy and a decrease in the light intensity returned to...

Claims

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