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Angle reflector and angle reflector array

A corner reflector and array technology, which is applied in the aerospace field, can solve the problem that the structure of the corner reflector cannot meet the requirements, etc., and achieve the effects of increasing the effective light aperture, increasing the reflected energy, and increasing the field of view.

Inactive Publication Date: 2014-09-17
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the structure of existing corner reflectors cannot meet the requirements

Method used

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  • Angle reflector and angle reflector array
  • Angle reflector and angle reflector array
  • Angle reflector and angle reflector array

Examples

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Embodiment 1

[0022] The first embodiment of the present invention proposes a corner reflector, the structure of which is as follows figure 1 As shown, the corner reflector is a tetrahedral structure made of K9 glass, including four fixed points O, A, B, C, including the incident surface ABC and three sides AOB, BOC, AOC; the three sides AOB , BOC, and AOC are respectively equipped with reflective films; and the three sides AOB, BOC, and AOC are at preset angles. When the incident light is incident in a direction perpendicular to the incident surface ABC, it will be projected to the side at an angle of 54.7° on the AOB, and projected onto the side BOC at an angle of 54.7° after being totally reflected by the side AOB, and projected onto the side AOC at an angle of 54.7° after being totally reflected by the side BOC, and perpendicular to the The direction of the incident surface ABC is emitted.

[0023] Wherein, the reflection critical angle of the K9 glass is 41.8°. The reflective film is...

Embodiment 2

[0027] The second embodiment of the present invention proposes a corner reflector array, the structure of which is as follows image 3 As shown, six corner reflectors described in the first embodiment are included. Wherein, corresponding fixed points of the six corner reflectors are arranged together to form the corner reflector array, and the incident surface is a regular hexagon.

[0028] The application proves its effectiveness through the following experiments:

[0029] Figure 4 Shown is a laser with a wavelength of 974nm, which is vertically incident on the corner reflector from 40 meters away, and a CCD camera with a focal length of 8mm is used to collect images, and the imaging effect of the corner reflector is obtained. It can be seen from the figure that the area occupied by the reflected light in the image can meet the requirements, and the gray distribution of the brightest part is basically uniform.

[0030] Figure 5 Shown is the imaging effect when the corne...

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PUM

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Abstract

The invention provides an angle reflector and an angle reflector array. The angle reflector is of a tetrahedral structure made of K9 glasses, and comprises four fixed points, an incident plane and three side faces, wherein the three side faces are respectively provided with a reflecting film, and form a preset angle; when being incident from a direction vertical to the incident plane, light is projected to the first side face at the included angle of 54.7 degrees, is projected to the second side face at the included angle of 54.7 degrees after being totally reflected through the first side face, is projected to the third face at the included angle of 54.7 degrees after being totally reflected through the second side face, and is ejected from the direction vertical to the incident plane after being totally reflected by the third side face. The embodiment of the invention also provides the angle reflector array, which comprises six angle reflectors, wherein the six angle reflectors form a regular hexagon; and no gap exists among the six angle reflectors, so that the effective reflection area of the reflector array is favored to be increased.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a corner reflector and a corner reflector array as a space rendezvous and docking pulse coded passive optical sensor. Background technique [0002] Space rendezvous and docking refers to the entire flight process in which two or more spacecraft meet (rendezvous) at a predetermined position and time in orbit, and then are structurally connected as one (docking). [0003] In the vast universe, it is extremely difficult to accurately dock two aircrafts together. The existing space rendezvous technology uses a docking pulse coded passive optical sensor. The existing docking pulse-coded passive optical sensor consists of two parts: the sensor main installation box and the cooperation target, wherein the sensor main installation box is installed on the tracking spacecraft, and the cooperation target is installed on the target spacecraft. [0004] During docking, the main installat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/122G02B5/124
Inventor 胡广大刘晓军陈鹏
Owner UNIV OF SCI & TECH BEIJING
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