Abstract:
An image reading device includes a light source; a light guiding member; an imaging optical system that reflects the light, which faces a first direction from the object, in a second direction intersecting the first direction by a reflective plane disposed in the first direction of the object, that makes the light, which is reflected by the reflective plane, converge toward the second direction by an emission portion disposed in the second direction of the reflective plane, and that images an erect equal-magnification image of the object in the second direction of the emission portion; and an optical sensor that is disposed in the second direction of the emission portion of the imaging optical system, and detects the erect equal-magnification image that is imaged by the imaging optical system, in which the light guiding member is disposed at an object side of the emission portion in the first direction.
Abstract:
An image reading apparatus configured to read an image of an original, including: a light source configured to irradiate the original with light; an optical system configured to condense and image a light beam from the light source reflected from the original; a substrate member having a photoelectric conversion unit; a fixing member fixed to the substrate member; a support member configured to support the optical system; and an adhesive bonding the fixing member and the support member together, wherein one of the support member and the fixing member has a protruding portion which protrudes toward the other of the support member and the fixing member, the other has a recessed portion opposed to the protruding portion, the protruding portion protrudes in the recessed portion in a non-contact state to maintain a gap between the protruding portion and the recessed portion, and the adhesive is applied to the gap.
Abstract:
An optical module 100 includes an optical path unit 101 including a plurality of reflectors 104 for securing an optical path of reflected light from a manuscript, an image processing unit 102 including a reading device 105 which reads image information on the manuscript based on the reflected light from the manuscript entered via the optical path, and a connecting component 103 which connects the optical path unit 101 and the image processing unit 102 so that their positional relation will become a prescribed state.
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 optical scanner includes an optical housing, which houses a light source, an aperture stop, a condensing lens and a rotary deflector, light from the light source entering into the rotary deflector via the aperture stop and the condensing lens, and the light deflected by the rotary deflector scanning a target to be irradiated, a fastener, which fastens the condensing lens to the optical housing, and a fastener attachment portion to which the fastener is attached, the fastener attachment portion being disposed in a downstream side of the condensing lens in a traveling direction of the light in the housing.
Abstract:
An optical scanning device includes a plurality of converging lenses and a plurality of supporting members. Each supporting member supports a corresponding one of the converging lenses. Moreover, the converging lenses are arranged so as to be out of alignment with one another in a main-scanning direction and are arranged in a row in a sub-scanning direction in such a manner that no converging lens interferes with supporting members that support other converging lenses.
Abstract:
An optical device including: a laser light emitting portion that emits laser light; a polygon mirror having a reflective surface that reflects the laser light, the polygon mirror being driven to rotate and deflecting the laser light emitted from the laser light emitting portion; a first lens through which the laser light reflected by the polygon mirror is transmitted, the first lens refracting the laser light; a second lens through which the laser light having passed through the first lens is transmitted, the second lens refracting the laser light; and an adjustment unit that adjusts at least one of a length of a first optical path between the polygon mirror and the first lens, and a length of a second optical path between the first lens and the second lens.
Abstract:
An image reading apparatus includes an array substrate in which a plurality of point light sources is mounted along the main scanning direction, a light guide member disposed on a surface of the array substrate that mounts the plurality of point light sources, and guiding light from the plurality of point light sources to the document surface, a frame for fixing the light guide member and the array substrate, a positioning unit that determines the positional relationship of the frame with the light guide member and the array substrate in a configuration in which the incident surface of the light guide member is in proximity to or in contact with the plurality of point light sources; and an image reading unit that uses reflected light when illuminating light from the plurality of point light sources through the light guide member onto the document surface to thereby read the document image.
Abstract:
An erecting equal-magnification lens array plate includes: a first lens array plate provided with a plurality of first lenses and a plurality of second lenses; a second lens array plate provided with a plurality of third lenses and a plurality of fourth lenses; a first light-shielding wall having a plurality of first through holes; and a second light-shielding wall having a plurality of second through holes. The first through hole and the second through hole each includes: a lateral wall portion; an annular inner projection portion provided to project from an end of the lateral wall portion; and an annular outer projection portion provided to project from an end of the lateral wall portion facing the lens. The inner projection portion and the outer projection portion are not formed with a surface parallel to an optical axis.
Abstract:
An optical writing device that writes electrostatic latent images on an image carrier by irradiating and scanning the image carrier with an optical beam includes an optical element, a support housing configured to support members constituting the optical writing device, a pair of optical-element holding members opposing each other in a principal scanning direction and arranged in the support housing, and a displacing member configured to displace at least one of the pair of optical-element holding members relatively to the support housing on a plane perpendicular to the principal scanning direction. The optical-element holding member is made of a material having a coefficient of linear expansion smaller than that of the support housing.