Abstract:
An image sensor has a supporting member for integrally supporting a reading system including illuminating means for illuminating an original document, a photoelectrically converting means and imaging means for imaging light reflected by the surface of the original document onto the photoelectrically converting means, and has a member disposed on the side surface of the supporting member. The image sensor has two or more substantially independent spaces formed in the supporting member. The illuminating means, the imaging means and the photoelectrically converting means are accommodated in one of the spaces.
Abstract:
An image sensor (S1) is provided that comprises: light guides (1,2) for irradiating light onto an irradiated object; a lens (15) that focuses reflected light that was reflected by the irradiated object; a sensor (16) that receives the reflected light that was focused by the lens (15); and a housing (10). The housing (10) houses or holds the light guides (1, 2), the lens (15), and the sensor (16), and is formed by integrating a housing metal portion (110) and a housing resin portion (210).
Abstract:
An illuminating apparatus includes a columnar light guide (1, 2), a board (11, 12) having a light source (3, 4, 5, 6) fastened on one surface thereof, and a holder (7, 8). The holder is formed with a through-hole (7a, 7b, 8a, 8b) into which an end of the light guide (1, 2) in the columnar center axis direction is fitted to hold the light guide (1, 2), and a catch (7c, 7d, 8c, 8d) that catches and holds the board (11, 12) with the light source (3, 4, 5, 6) facing the end surface of the light guide (1, 2) in the columnar center axis direction in the through-hole (7a, 7b, 8a, 8b).
Abstract:
A light-orientation adjusting unit for use with a light-receiving member includes an optical unit (50), a posture control unit (56, 58), a first regulating member, (61b), and a second regulating member (62b). The optical unit (50) passes a light beam (L) therethrough toward the light-receiving member. The posture control unit (56, 58) controls the posture of the optical unit (50) to adjust an inclination of a scanning line to be formed on the light-receiving member by the light beam (L). The first regulating member (61b) regulates a movement of the optical unit (50) within a given range by contacting the first regulating member (61b) to the optical unit (50). The second regulating member (62b) regulates a movement of the optical unit (50) within a given range by contacting the second regulating member (62b) to the optical unit (50). The first regulating member (61b) is provided with a first biasing member (61a), and the second regulating member is provided with a second biasing member (62a), which are disposed on first and second ends of the optical unit (50), respectively.
Abstract:
In a system for scanning a document (43), a light source (22) illuminates the document; an imager (24, 41, 41', 61, 62) receives light from the document and directs it toward a detector array (25) which produces a corresponding array of electrical signals. The imager has several optical properties that are useful either individually or in combination. The imager is telecentric and thereby ensures that image size and magnification are insensitive to object displacement along the optical axis (46, 46') and image brightness is uniform independent of object off-axis distance. An aspheric element (33) within the imager balances focus variation (82-81-83) within the depth of field with spherical aberration and thereby provide nearly uniform image resolution. A diffraction pattern (33'), carried by the imager, corrects for spectral dispersion which occurs when light passes (63) from air into a refractive material (61, 62). An imager with a reflecting surface (32, 33) provides a system that is subject to little or no chromatic aberration. A solid imager (61, 62) with multiple internal reflecting surfaces (32, 33, 42) in optical series (32-33-32-42), configured to include the previously mentioned optical properties, also provides for highly stable alignment of reflecting surfaces.