Abstract:
Provided is an image scanning unit which makes it possible to improve scanning accuracy while also making the overall body thinner by appropriately positioning a plurality of reflection members within an effective space in a carriage frame without wasting space. An image scanning unit, wherein a frame is divided into at least two spaces facing an irradiation surface, a first accommodation unit for accommodating a light source unit is formed in one of the spaces, a second accommodation unit for accommodating at least one reflection member is formed in the other adjacent space, a first reflection member for initially receiving light reflected from the irradiation surface is positioned at the side opposite the irradiation surface with the first accommodation unit positioned therebetween, and a light-shielding member is provided between the first reflection member and the reflection member positioned in the other space and prevents light that has strayed from a scanning light path from the first reflection member from being incident on the reflection member in the other space.
Abstract:
A contact image sensor unit includes: a light source (10) illuminating an original; a rod-like light guide (11) guiding light from the light source to the original; an imaging element (12) forming reflected light from the original on a plurality of photoelectric conversion elements; a sensor substrate (14) on which the plurality of photoelectric conversion elements are mounted; a frame (15) to which they are attached and which has a positioning part (200) for attaching the light guide (11) thereto; and a supporting member (16) which attachably/detachably supports the light guide (11) and is attachably/detachably attached to the positioning part (200). Since the light guide (11) can be attached to the frame (15) without using an adhesive, the deformation of the light guide (11), the warpage of the contact image sensor unit and so on can be prevented.
Abstract:
An optics module (150) for a scanning device (110) such as a portable scanner includes an illumination source (160) and guide (162) that transmits light through an optical window (164) of the scanning device casing (122) before reflecting off of the object (114) to be scanned. The reflected light from the object travels back through the optical window (164, 364) and a lens (166) before reaching a photosensor (168) for evaluation by an associated microprocessor (158). The optical window (164) of the scanning device (110) provides a recess (165, 365) in the scanning device casing (122). The recess (165, 365) of the window (164, 364) is formed using the functional components of the optics module (150) to eliminate a piece of glass typically used within the optical window that can be easily scratched or broken and provides a loss during the illumination process. By using the functional components of the optics module (150) to form the recessed optical window (165, 365), manufacturing costs to secure and replace a typical glass window contained therein can be eliminated, size of the optics module (150) is reduced, and any contaminates that gather around the optics module window (150) can be easily removed by the user.
Abstract:
A contactless image sensor comprises a light source (1,2) for irradiating the light onto an original, photoelectric converting elements for photoelectrically converting the light from the original (4), an image pickup device (7) for guiding the light from the original to the photoelectric converting elements (9), and a frame body (10) for holding them. The frame body includes a light transmitting portion (6) and a light non-transmitting portion and they are integrally pressing-out molded by plastics. Namely, the optical path portion (6) and the optical guide (3) 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.
Abstract:
A contact type image sensor provided with a case (12) wherein a read space (22) subject to damage by dust and a light source space (21) less damaged by dust are completely separated from each other, and the light source space (21) is formed with a reflecting mirror surface (13) for effectively guiding light from the light source (5) to an original read surface (4), whereby a uniform read image is obtained by the enhancement of original read performance without occurrence of deterioration in the quality of the image caused by dust.
Abstract:
A contact type image sensor provided with a case (12) wherein a read space (22) subject to damage by dust and a light source space (21) less damaged by dust are completely separated from each other, and the light source space (21) is formed with a reflecting mirror surface (13) for effectively guiding light from the light source (5) to an original read surface (4), whereby a uniform read image is obtained by the enhancement of original read performance without occurrence of deterioration in the quality of the image caused by dust.