An optical PH includes: a plurality of current-driven light emitting elements that are arranged in a line-shaped region; a controller that outputs a control voltage instructing an amount of a drive current to be supplied to each of the light emitting elements; and a plurality of drivers that correspond one-to-one with the light emitting elements, and each supply the drive current to a corresponding one of the light emitting elements, wherein the drivers each operate as one of: a high-voltage referring driver that supplies the drive current according to a voltage difference between the control voltage and a reference voltage higher than the control voltage; and a low-voltage referring driver that supplies the drive current according to a voltage difference between the control voltage and a reference voltage lower than the control voltage.

A line sensor apparatus comprises a rod lens array in which a plurality of rod lenses are arrayed in a first direction, a line sensor substrate including a line sensor which receives light from the rod lens array, a pair of inner supporting members configured to support the line sensor substrate, a transmitter substrate including a transmitter which transfers data based on the light detected by the line sensor, and an outer supporting member configured to support the pair of inner supporting members and the transmitter substrate, wherein the pair of inner supporting members are arranged on two side surfaces of the rod lens array in a second direction perpendicular to the first direction.

An optical member includes a lens array including lens bodies, and transmissive members. The transmissive members are made of a material having a uniform refractive index, and are disposed at positions nearer an object-to-be-read than the corresponding lens bodies are disposed or at positions farther from the object-to-be-read than the corresponding lens bodies are disposed. The transmissive members have a columnar shape extending along the optical axes of the lens bodies, and allow light incident through one end faces to exit through the other end faces. At least either ones of the lens bodies or the transmissive members are arranged with distances therebetween larger than errors in the arrangement of the lens bodies and the transmissive members.

An image reading apparatus includes a light source, a light receiving unit, and an optical system. The light receiving unit includes a plurality of light receiving elements. The optical system includes a plurality of optical components for splitting the light reflected from the object to be read, and guiding the split light to each of the plurality of light receiving elements. The plurality of optical components include a splitting component that splits the light reflected from the object to be read in a direction corresponding to a main direction, and a common component provided with a common portion. The common portion has an optically acting area causing a common effect on the tight split by the splitting component. A cross sectional shape of the optically acting area orthogonal to a direction corresponding to the main direction is the same shape along the direction corresponding to the main direction.

A reading apparatus that reads a sheet includes: a first light emitting diode (LED) configured to emit light with a specific wavelength; a light emitting element including a second LED configured to emit light with the specific wavelength and a phosphor configured to be excited by the light emitted from the second LED; a line sensor configured to generate a reference signal according to a quantity of received light emitted from the first LED and reflected off the sheet, and also generate an image signal according to a quantity of received light emitted from the light emitting element and reflected off the sheet; and a controller configured to generate an image representing the sheet from a differential result obtained by removing a component corresponding to the reference signal from the image signal.

An optical print head, including: an elongated substrate having a line-shaped region in which light-emitting elements are arranged; an optical member condensing light from the light-emitting elements onto an irradiation target; a holding member holding the optical member; a base member holding the substrate and the holding member; an integrated circuit mounted in a first region in proximity of an end in a longitudinal direction of the substrate on a first surface of the substrate facing the base member, heat being generated in the integrated circuit during optical writing; and a thermally conductive member between the integrated circuit and the base member. In the optical print head, the holding member has a support portion contacting the substrate in a second region at a position differing from the first region in plan view on a second surface of the substrate not facing the base member.

A light receiving unit including: a sensor board assembly on which plural sensor tips are arrayed in a line in a longitudinal direction of the sensor board and mounted on the sensor board; and a sensor plate on which plural of the sensor board assemblies are arrayed and mounted in a line in the longitudinal direction. The sensor chips include plural pixels formed in a line in the longitudinal direction. At longitudinal ends of the sensor board assembly, the sensor chips protrude outward in the longitudinal direction from the longitudinal ends. Between the facing sensor chips of the adjacent sensor board assemblies, the facing sensor chips mounted at the longitudinal ends, the ends of the facing sensor chips are spaced at a predetermined interval. The sensor board includes convex portions, at the longitudinal ends, protruding in the longitudinal direction. The sensor chips are mounted at the convex portion.

An image sensor includes: a lens configured to focus light irradiated toward an object to be read and reflected by the object to be read; a sensor configured to receive light focused by the lens; a sensor board configured to mount thereon the sensor; a board retaining plate, having a casing attachment surface extending in the X direction and a sensor board attachment reference surface that is in contact with the +Y side of the sensor board and is formed in a side surface of the casing attachment surface, and configured to retain the sensor board; and a first casing configured to fix or retain the board retaining plate by fastening of a surface of the casing attachment surface.

There is provided a method of manufacturing an image sensor unit, the image sensor unit including: a linear light source that illuminates a document along a main scanning direction; a rod lens array that includes a plurality of rod lenses arranged in the main scanning direction and condenses a light reflected from the document; and a linear image sensor that receives a light condensed by the rod lens array. When a rod lens having an optically discontinuous portion on a surface and/or interior of the rod lens is included, the rod lens array is arranged such that the optically discontinuous portion is not located toward the document.

The present disclosure relates to a micro-scanning device that comprises a surface on which specimen to be scanned is positioned, and at least one micro lens configured to enable scanning of the specimen so as to obtain micro-details of the specimen. One or more micro lenses are installed below the flatbed surface in an array of movable configuration or in a stationary configuration. The device further incorporates a front panel to live-view micro-detail image of a specimen placed on the flatbed surface and incorporates means to focus, size, and zoom/scale the micro-detail image of the specimen. The device can be either a portable/handheld device or a stationary device and incorporates scan firmware to save and store or send copy of image incorporating micro-details on an associated/coupled computing device and/or in the internal memory of the scanner for performing any of stitching, printing, saving or sharing.