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High-precision optical spherical cover and mould, and making process thereof

A production process, high-precision technology, applied in optics, television, instruments, etc., can solve the problems of low picture accuracy, unclear images, affecting the image quality of cameras, and achieve high picture accuracy, clear images, and finished products. high rate effect

Inactive Publication Date: 2009-03-18
福州捷美信光电技术有限公司
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  • Abstract
  • Description
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Problems solved by technology

In the past few years, cameras and high-speed ball cameras with large zoom ratios have not been widely used in China, so the technical requirements for dome cover optical products are relatively low, which can basically meet the needs of low-end products in the market. If it is used in conjunction with a small camera, it will seriously affect the image quality of the camera, resulting in unclear images, low picture accuracy and other defects

Method used

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  • High-precision optical spherical cover and mould, and making process thereof
  • High-precision optical spherical cover and mould, and making process thereof
  • High-precision optical spherical cover and mould, and making process thereof

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Embodiment Construction

[0028] The present invention is described in detail below

[0029] Such as figure 2 As shown, a high-precision optical dome cover is shaped as a hemispherical shell. The inner and outer surfaces of the shell are coaxial and not concentric. The center of the outer surface is higher than the center of the inner surface, forming thin, For the thick shell in the middle, the distance between the center of the outer surface of the shell and the center of the inner surface of the shell is 10--60 μm, and a variety of frames can also be provided for matching.

[0030] Such as image 3 As shown, there is a conical arc surface 11 with a radius greater than the radius of the outer surface on the edge of the outer surface of the dome cover 1, and the included angle θ between the conical arc surface 11 and the outer surface is 2-7 degrees, preferably 3-5 degrees , and the rest are the same as the above example.

[0031] A spherical shell with different thicknesses is formed by two spher...

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Abstract

The related high-precision optical ball cover in monitor system comprises: the ball shell has coaxial outer and inner surfaces but 10-60 mum center distance to form thin-end and thick-middle structure; during injecting, using slow-fast-slow-slow way to gradual inject, exchanging pressure every 30% journey, and slow injecting at last 10% stage. This invention has well physical performance.

Description

technical field [0001] The invention belongs to a medium-high speed dome machine in a monitoring system, in particular to a special optical dome cover and a mold for a medium-high speed dome machine and their manufacturing process. Background technique [0002] The full name of the dome cover is a dome cover, which is mainly used to protect the camera in the surveillance system. At present, domestic dome cover production generally adopts AS or transparent PS injection molding process and traditional polishing process, such as figure 1 Shown is a spherical shell with uniform and equal wall thickness. In the past few years, cameras and high-speed ball cameras with large zoom ratios have not been widely used in China, so the technical requirements for dome cover optical products are relatively low, which can basically meet the needs of low-end products in the market. If it is used in conjunction with a small camera, it will seriously affect the image quality of the camera, ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B17/56H04N5/225
Inventor 陈睿
Owner 福州捷美信光电技术有限公司
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