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A reflective prism and a target for measurement

A technology of reflective prisms and reflective surfaces, applied in prisms, measuring instruments, measuring devices, etc., can solve problems such as limited incident light

Active Publication Date: 2019-08-23
KK TOPCON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although it is 360°, it is limited to deal with incident light from elevation and depression directions

Method used

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  • A reflective prism and a target for measurement
  • A reflective prism and a target for measurement
  • A reflective prism and a target for measurement

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0027] (summary)

[0028] Figure 1A , 1B The reflective prism 100 of the embodiment is shown. The reflective prism 100 has a structure in which seven corner cube prisms 101 to 107 are combined. The corner cubes 101 to 107 are the same corner cubes. figure 2 An exploded perspective view is shown in which the corner cubes 101 to 107 constituting the reflective prism 100 are separated from each other.

[0029] (about corner cube)

[0030] Hereinafter, the corner cube prisms 101 to 107 will be described. Here, representatively, the corner cube 107 will be described as an example. The corner cube 107 is an optical member that combines three planes having mirror surfaces at right angles to each other, and has a function of reflecting incident light in the same direction as the original optical axis. In addition, in Figure 1A , 1B In the structure of , the part of the vertices of the cube is cut off.

[0031] The corner cube prism 107 is made of glass with good optical pro...

no. 2 approach

[0041] exist Figure 1A , 1B In the reflective prism configuration, the corner cubes 101 to 107 may be combined in such a way that the positions of the vertices of the corner cubes 101 to 107 are aligned so that no gap or deviation occurs as much as possible. Figure 4A , 4B An example of this case is shown. Figure 4A , 4B Shown is a corner cube assembly 120 in which six corner cubes are combined without gaps in a state where the positions of the apexes are aligned.

[0042] On the upper part of the corner cube assembly 120, a triangular pyramid-shaped recess 122 is formed, and the corner cube 121 is embedded in the recess 122 without causing a gap, so that the positions of the apexes of the seven corner cubes are aligned. Seven corner cubes are combined without gaps to form the reflective prism 130 . In the reflective prism 130, the positional relationship of the seven corner cubes is the same as that of the first embodiment.

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Abstract

The present invention provides a reflective prism that is capable of coping with incident light from a wide angle range and suppressing the number of cube-corner prisms to a minimum. The reflective prism (100) is composed of seven triangular pyramid-shaped cube-corner prisms (101 to 107) one surface of which is a transmissive surface, and the inner sides of other surfaces are reflecting surfaces.The reflective prism (100) includes six cube-corner prisms (101 to 106) that are disposed around the axis in a state in which the transmission surface is outside and the triangular upper and lower directions of the transmission surface are alternately combined; and a cube-corner prism (107) embedded into a substantially triangular pyramid-shaped recess (111) formed in the upper portions of the sixcube-corner prisms (101 to 106).

Description

technical field [0001] The invention relates to a reflective prism for measurement. Background technique [0002] A reflective prism used for measurement using a TS (total station) or the like is widely known (for example, refer to Patent Document 1 and Patent Document 2). The reflective prism of Patent Document 1 copes with incident light from 360° directions by combining a plurality of corner cubes. However, although it is 360°, it is limited to deal with incident light from elevation and depression directions. [0003] As a technique for dealing with this problem, a reflective prism in which eight corner cubes are combined is known (see Patent Document 3). In this technique, two pyramid-shaped (square pyramid-shaped) reflection prisms composed of four corner cube prisms are fabricated, and the two pyramid-shaped reflection prisms are then fabricated with their bottoms facing each other. combined. The reflective prism can in principle deal with incident light from all ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/04G01C15/08
CPCG02B5/04G01C15/08
Inventor 西田信幸
Owner KK TOPCON