Optical reading head with diffuseness structure

An optical read head and structure technology, applied in the field of optical read heads, can solve the problems of inability to effectively improve lighting efficiency, reduce LED usage and power consumption, and reduce contrast, etc.
CN101408927AInactive Publication Date: 2009-04-15SUNPLUS MMEDIA
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SUNPLUS MMEDIA
Publication Date
2009-04-15
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses an optical pickup head which has a diffusion structure and is used for fetching an object. The optical pickup head comprises a hollow shell, a light source module, the diffusion structure and a sensitization module. The light source module is fixed in the hollow shell and provides an initial beam. The diffusion structure is connected to the hollow shell and receives the initial beam, and processes the initial beam into an even beam. The initial beam is reflected for a plurality of times in the diffusion structure to form the even light. The sensitization module is fixed in the hollow shell to sense the even beam reflected by the object, wherein, one optical axis of the sensitization module is substantially parallel to an axial direction of the diffusion structure.
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Description

technical field

[0001] The present invention relates to an optical reading head with a diffuse structure, in particular to an optical reading head with a tubular or columnar diffuse structure to improve the reading success rate of two-dimensional barcodes and remove the reflected stray light. The problem of identifying dead angles is caused. Background technique

[0002] FIG. 1 shows an application schematic diagram of a conventional optical pickup head. As shown in FIG. 1 , the optical pickup head 101 reads an object 102 , wherein the optical pickup head 101 includes a hollow shell 110 , a light source module 120 and a photosensitive module 140 . The light source module 120 is fixed in the hollow casing 110 and provides a light. The light irradiates the object 102 after being reflected within the hollow casing 110 . The photosensitive module 140 is fixed in the hollow casing 110 to sense the light reflected by the object 102 .

[0003] The reflection of light can be div...

Claims

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