Abstract: In an image sensor having, in a frame equipped with a transparent cover engageable with an objective, a light emitter for radiating light over the objective, an optical system for condensing light reflected from the objective and for directing the light to a predetermined position, a light receptor for receiving the light directed by said optical system, electronic elements constituting the light receptor are mounted on a long substrate, and other electronic elements are mounted on a single short substrate, which is attached to the long substrate at a portion other than the portion where the light receptor is mounted. This image sensor can be assembled in a reduced number of steps, preventing soldering flux from flying to the light receptor.

Abstract: An image sensor has a frame including a reading window formed therein at the top of the frame. The reading window is closed by a glass covering which is adhered to the frame through an adhesive. First and second grooves are provided in the frame to extend along the reading window. After the adhesive has been charged into the first groove, the glass covering is placed and pressed against the frame top so that the glass covering will be adhered to the frame top through the adhesive. At this time, any excess adhesive may be received and held by the second groove.

Abstract: An LED head includes a circuit substrate on which a light emitting element and drive IC are mounted, a SELFOC lens for condensing the irradiating light from the light emitting element on the circuit substrate, and a head cover of aluminum for holding the SELFOC lens spaced a given distance away from the light emitting element and for radiating heat from the circuit substrate.

Abstract: A line image sensor capable of being constructed in a simple manner with reduced production steps at a low cost. The line image sensor includes a case body having a mount groove part in an appropriate part of a container chamber, and a LED array container case for containing a LED array, mounted to the case body within the container chamber. The LED array container case includes a mount part to be engaged with the mount groove part for mounting the LED array container case to the case body, a spring plate part for pushing and holding a condenser lens against an internal wall of the container chamber, and holding projection parts for pushing and holding the LED array within the LED array container case, and directs light generated by the LED array to a transparent glass plate for supporting a manuscript. A resilient member can be used in place of the spring plate part. A facsimile machine including the line image sensor is also disclosed.

Abstract: In an image sensor including a light emitting element for emitting a light beam to be incident on a document, a light receiving element for receiving the light beam reflected by the document, and a lens array for directing the reflected light beam from the document to the light receiving element, there is located a mirror between the lens array and the light receiving element for changing the direction of the light beam passing through the lens array. The light emitting element and the light receiving element are located on the same substrate. With this arrangement, a compact and inexpensive image sensor can be achieved. This compact image sensor causes an increased amount of light to be incident on the document.