Optical scanner unit having recursive optical system
First Claim
1. An optical scanner unit for scanning a document comprising:
- light source means for emitting a light beam used for scanning the document;
an optical system in which the light beam emitted from said light source means travels to the document and a reflection light beam obtained by reflection of the light beam on the document returns back through said optical system, said optical system having scanning means for moving the light beam which passes through said optical system so that a two dimensional scanning of the document is carried out by the light beam; and
detection means, coupled to said optical system, for detecting the reflection light beam returning back through said optical system;
wherein an image formed on the document is read based on results obtained by said detection means.
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Accused Products
Abstract
An optical scanner unit for scanning a document includes a laser unit for emitting a laser beam used for scanning the document, an optical system in which the laser beam emitted from the laser unit travels to the document and a reflection light beam obtained by reflection of the laser beam on the document can turn back through the optical system, the optical system having a scanning device for moving the laser beam which passes through the optical system so that a two dimensional scanning of the document is carried out by the light beam, and an optical sensor for detecting the reflection light beam turning back through the optical system, wherein an image formed on the document is read based on results obtained by the optical sensor.
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Citations
31 Claims
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1. An optical scanner unit for scanning a document comprising:
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light source means for emitting a light beam used for scanning the document; an optical system in which the light beam emitted from said light source means travels to the document and a reflection light beam obtained by reflection of the light beam on the document returns back through said optical system, said optical system having scanning means for moving the light beam which passes through said optical system so that a two dimensional scanning of the document is carried out by the light beam; and detection means, coupled to said optical system, for detecting the reflection light beam returning back through said optical system; wherein an image formed on the document is read based on results obtained by said detection means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An optical scanner unit for scanning a document comprising:
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light source means for emitting a plurality of light beams whose wavelengths differ from each other, said plurality of light beams being used for scanning the document; an optical system in which said plurality of light beams emitted from said light source means travel to the document, said optical system having scanning means for moving said plurality of light beams which pass through said optical system so that a two dimensional scanning of the document is carried out by said plurality of light beams; and detection means, coupled to said optical system, for detecting reflection light beams obtained by reflection of said plurality of light beams; wherein an image formed on the document is read based on results obtained by said detection means; and wherein said optical system is formed so that the reflection light beams can return back through said optical system, and wherein said detection means detects the reflection light beams returning back through said optical system. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An optical scanner unit for scanning a document comprising:
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light source means for emitting a plurality of light beams whose wavelengths differ from each other, said plurality of light beams being used for scanning the document; an optical system in which said plurality of light beams emitted from said light source means travel to the document, said optical system having scanning means for moving said plurality of light beams which pass through said optical system so that a two dimensional scanning of the document is carried out by said plurality of light beams; and detection means, coupled to said optical system, for detecting reflection light beams obtained by reflection of said plurality of light beams; wherein an image formed on the document is read based on results obtained by said detection means; and wherein said light source means comprises a light source unit for emitting an original light beam having a predetermined wavelength and a light beam generating means for receiving said original light beam and generating said plurality of light beams from said original light beam emitted from said light source unit. - View Dependent Claims (20)
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21. An optical scanner unit for scanning a document comprising:
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light source means for emitting a plurality of light beams whose wavelengths differ from each other, said plurality of light beams being used for scanning the document; an optical system in which said plurality of light beams emitted from said light source means travel to the document, said optical system having scanning means for moving said plurality of light beams which pass through said optical system so that a two dimensional scanning of the document is carried out by said plurality of light beams; and detection means, coupled to said optical system, for detecting reflection light beams obtained by reflection of said plurality of light beams; wherein an image formed on the document is read based on results obtained by said detection means; and wherein said optical system has a plurality of optical paths in which said plurality of light beams respectively travel, and focusing means for focusing said plurality of light beams passing through said optical paths at the same position on said document.
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22. An optical scanner unit comprising:
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light source means for emitting a first light beam used for scanning a document and a second light beam used for writing images on a recording medium; scanning means for moving an input light beam in a predetermined direction; an input optical system in which said first and second light beams emitted from said light source means travel to said scanning means so that each of said first and second light beams is, as an input light, incident to said scanning means; a first optical system in which said first light beam, moved by said scanning means, travels to the document so that the document is scanned by said first beam; detection means for detecting a reflection light beam obtained by a reflection of said first light beam on the document, so that an image formed on the document is read based on results obtained by said detection means; and a second optical system in which said second light beam, moved by said scanning means, travels to the recording medium, so that an image is written on the recording medium. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. An optical scanner unit comprising:
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light source means for emitting a light beam; scanning means for moving an input light beam in a predetermined direction; an input optical system in which said light beam emitted from said light source means travels to said scanning means so that said light beam is, as an input light, incident to said scanning means; a first optical system in which said light beam moved by said scanning means travels to a document so that the document is scanned by said light beam; detection means for detecting a reflection light beam obtained by the reflection of said light beam on the document, so that an image formed on the document is read based on results obtained by said detection means; a second optical system in which said light beam moved by said scanning means travels to a recording medium, so that an image is written on the recording medium; and selecting means for selecting either said first optical system or said second optical system in accordance with an external controller. - View Dependent Claims (31)
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Specification