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Contact type image sensor with more-unified construction
| Details |
Inventors: Tabata, Masami;
Assignee: Canon Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Allen; Stephone
Assistant Examiner:
Attorney, Agent or Firm: Fitzpatrick, Cella, Harper & Scinto
A contactless image sensor comprises a light source for irradiating the light onto an original, photoelectric converting elements for photoelectrically converting the light from the original, an image pickup device for guiding the light from the original to the photoelectric converting elements, and a frame body for holding them. The frame body includes a light transmitting portion and a light non-transmitting portion, which are integrally pressing-out molded plastics. That is, the optical path portion and the optical guide of the frame body are made of transparent plastics and the other portions of the frame body are made of colored plastics having a light shielding performance. |
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DETAILED DESCRIPTION It is an object of the invention to provide a contact type image sensor which can solve the technical problems as mentioned above by paying an attention to them.
It is one aspect of the invention to provide a contact type image sensor having a light source to irradiate a light onto an original, photoelectric converting elements to photoelectrically convert the light from the original, and a frame body to hold them, wherein the frame body includes a light transmission portion and a light-non-transmission portion and they are made of plastics which were integrally pressing-out molded (this term used throughout the disclosure to denote a process such as that disclosed in FIG.
4 and the corresponding description).
According to the invention, there is provided a contact type image sensor in which a part of a frame body to hold a light source to irradiate light onto an original, photoelectric converting elements to photoelectrically convert the light from the original, and an image pickup device to guide the light from the original to the photoelectric converting elements is used as an original supporting body and at least a part of the original supporting body is constructed by a light transmitting material, wherein the frame body is made of plastics which were integrally pressing-out molded.
According to the invention, a part of the frame body for holding the light source, photoelectric converting elements, and image pickup device which are component elements of the contact type image sensor is used as an original supporting body, at least a part of the original supporting body is constructed by a light transmitting material, and the frame body is integrally pressing-out molded by plastics, so that the number of parts of the contact type image sensor is reduced and a height difference between the original supporting body and the frame body is eliminated.
Further, so long as an optical guide to guide the light of the light source to the original is integrally pressing-out molded by transparent plastics, the light source can be isolated, thereby making it possible to prevent foreign matter dropped from the light source obstructing the optical axis
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Nonmetallic Processes 
