High-efficient retroreflective microprism and manufacturing method of mold thereof

A micro-prism and retro-reflection technology, applied in prisms, optics, instruments, etc., can solve the problems of complex processing process, low processing efficiency and precision, and achieve the effect of simple structure and shape, easy implementation, and improved retro-reflection performance.

Active Publication Date: 2011-04-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The improvement of the effective clear aperture in the disclosed patents does not adopt the method of directly modifying the non-clear aperture area, which leads to complicated processing, low processing efficiency and precision

Method used

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  • High-efficient retroreflective microprism and manufacturing method of mold thereof
  • High-efficient retroreflective microprism and manufacturing method of mold thereof
  • High-efficient retroreflective microprism and manufacturing method of mold thereof

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Embodiment Construction

[0036] Microprism retroreflective structure of the present invention such as figure 1 shown. figure 2 (1) It is two adjacent unit structures of ordinary microprisms, which are composed of two regular triangular pyramids, the bottom surface is an equilateral triangle, and the three sides are isosceles triangles, which are perpendicular to each other at the apex of the structure. Proximal side angle = 70.5288°. In contrast, a unit structure of the present invention such as figure 2 As shown in (2), it consists of two regular triangular pyramids and a symmetrical hexagonal pyramid. The two regular triangular pyramids still have: the base is a regular triangle, and the three sides are isosceles triangles, perpendicular to each other at the apex of the structure. The shape of the symmetrical hexagonal pyramid can be regarded as the three corners of the regular triangular pyramid being vertically truncated by the triangular shape with an angle of 70.5288°, and the remaining pol...

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Abstract

The present invention relates to a high-efficient retroreflective microprism. One unit structure is composed of a first regular triangular pyramid, a second regular triangular pyramid and a symmetrical hexagonal pyramid. Three edges of two regular triangular pyramids are perpendicular with one another and are positioned at two sides of symmetrical hexagonal pyramid. The symmetrical hexagonal pyramid is formed by cutting three corners of a three regular triangular pyramid. The shapes of three cut corners are same. Three new side surfaces of symmetrical hexagonal pyramid are obtained after cutting. The bottom surface of the three triangular pyramids is cut with three equilateral triangles. The bottom surface of the first regular triangular pyramid is one selected from three cut equilateral triangles. The angle between the adjacent side surfaces of the first regular triangular pyramid and the symmetrical hexagonal pyramid is 70.5288 degrees. The angle between the adjacent side surfaces ofthe second regular triangular pyramid and the symmetrical hexagonal pyramid is 70.5288 degrees. The invention simultaneously provides a method for manufacturing the microprism mold. The microprism provided by the invention has a simple structure. The mold manufacturing can be executed with a low cost.

Description

technical field [0001] The invention relates to an optimal design and mold making of a retroreflective structural mirror. Background technique [0002] The remarkable feature of the retroreflective structure is that it can reflect the light incident on the structure back to the light source area, so that the structure can achieve passive light emission, which is often used in traffic warning signs and so on. Because it is passive luminescence, it not only has the advantages of energy saving and environmental protection, but also is not affected by sunlight, weather and other environments. At present, it has been widely used in road signs and roadblocks, workers' safety clothing or other such safety clothing, packaging in the form of material rolls, etc., and can also be used in the construction of optical structures of some measurement systems. [0003] At present, structures with retroreflective functions mainly include the following categories: [0004] 1) Microbead arra...

Claims

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Application Information

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IPC IPC(8): G02B5/124G02B5/04B29C33/38B29C33/42
Inventor 房丰洲张效栋程颖
Owner TIANJIN UNIV
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