Isosceles micro prism and method for manufacturing mold

A microprism and isosceles technology, applied in manufacturing tools, milling machine equipment details, optics, etc., can solve the problems of large increase and decrease, unfavorable retroreflection applications, etc., to avoid assembly errors, ensure integrity, guarantee, etc. The effect of deep cutting

Inactive Publication Date: 2011-08-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the retroreflective performance of this microprism decreases greatly with the increase of the incident angle, which is not conducive to the retroreflective application at large incident angles.

Method used

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  • Isosceles micro prism and method for manufacturing mold
  • Isosceles micro prism and method for manufacturing mold
  • Isosceles micro prism and method for manufacturing mold

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Embodiment Construction

[0021] The invention relates to a microprism structure design and processing method whose bottom surface is an isosceles triangle. The designed microprism structure is easy to use diamond cutting or "fly-cutting" processing method for ultra-precision machining, and the obtained "convex" mold can be formed by hot pressing, injection molding or other molding methods to generate " Concave" solid microprism products. figure 1 It is the microprism structure of the present invention. The microprism unit is a tetrahedron, the bottom surface of the tetrahedron is an isosceles triangle, and the side lengths of the three sides are: bottom a, waist b, the triangle angle angle corresponding to the bottom is α, and the triangle angle angle corresponding to the waist is β; One of the three sides is an isosceles triangle, and the other two are the same hypotenuse triangles, and the three sides intersect perpendicularly at the apex of the structure. There are two different angles between th...

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PUM

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Abstract

The invention belongs to the technical field of retroreflective material manufacture, and relates to an isosceles micro prism. A micro prism unit constituting the isosceles micro prism is a tetrahedron; the bottom surface of the tetrahedron is an isosceles triangle; one of the three side surfaces is an isosceles triangle, the rest two side surfaces are the same hypotenuse triangles, and the three surfaces are perpendicular to one another and intersect at a structural vertex; and included angles between the side surfaces of the two hypotenuse triangles and the adjacent units are equal. The invention also provides a method for manufacturing a mold of the isosceles micro prism. By the micro prism structure provided by the invention, the retroreflective performance of the micro prism is reduced with the increase of an incidence angle.

Description

technical field [0001] The invention belongs to the technical field of retroreflective material manufacturing, and relates to a microprism and a mold thereof. Background technique [0002] Reflective materials, also known as retroreflective materials or retroreflective materials, include reflective film, reflective ink, reflective marking lines, reflective cloth, reflective leather, reflective webbing and reflective safety silk fabrics. Retroreflective materials have the advantages of energy saving, green and environmental protection, and are not affected by sunlight, weather and other environments. They are an important embodiment of national traffic signs and safety guarantees. [0003] Dr. Dong Qifang, a Chinese-American, first developed glass bead directional reflective film in 1950, which opened the way for the research and development of reflective materials, and then developed a series of reflective cloth materials. The microprism structure is the main structure of r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/124B23C3/28
Inventor 张效栋房丰洲程颖
Owner TIANJIN UNIV
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