Canon Kabushiki Kaisha

Shin Mogi

Kazuo Uzuki

Yoshinori Sugiura

Jun Azuma

Yasutaka Naruge

Ryosuke Kaku

A scanning optical apparatus includes an optical box accommodating a deflection device for scanningly deflecting a laser beam emitted by a light source and an optical part for directing the laser beam toward a member-to-be-scanned; a cap mounted to the optical box; a sealing member extending from the cap, wherein the sealing member is made of a material exhibiting easier deformation than the cap, and is contacted to a wall of the optical box in a deformed state.

Optical scanning apparatus with optical box sealed by a deformable sealing member

A compact optical scanning apparatus which can change the focal position of a light beam at high speed is provided. In this optical scanning apparatus, a collimating lens () which parallelizes a light beam from a light source () is formed by a KTN crystal, and electrodes () are placed inside and outside the collimating lens ().

Optical scanning apparatus

A multi-beam scanning apparatus has a multi-beam semiconductor laser which emits a plurality of laser beams, a laser holder holding the multi-beam semiconductor laser, a multi-beam light source unit having the multi-beam semiconductor laser and the laser holder, scanning imaging unit for scanning a plurality of laser beams emitted by the multi-beam semiconductor laser to form an image on a surface to be scanned, and a housing supporting the scanning imaging unit and the multi-beam light source unit. The multi-beam semiconductor laser is fixed to the laser holder with an inclination at or near a predetermined rotational angle for adjusting a beam interval between the plurality of laser beams.

Multi-beam scanning apparatus

An image forming apparatus including: an image bearing member; an optical unit for image exposure of the image bearing member, the optical unit being mountable from a side of the apparatus main body; and an elastic member for pressuring the optical unit downward.

Image forming apparatus in which leading end part of optical unit in mounting direction is pressed and fixed by elastic member

A multiple beam light source device includes a plurality of semiconductor laser chips. The plurality of semiconductor laser chips each have respective emission points independent from each other. The plurality of semiconductor laser chips are mounted such that the emission points are located so as to deviate in a direction to approach each other from positions of the centers of the plurality of semiconductor laser chips.

Multiple beam light source device and multiple beam scanning optical

A synthetic resin lens for an optical system of a scanning optical system comprises a synthetic resin lens having a guide hole for an adhesive curing promoting light formed at a mount area thereof.

Scanning optical system

A laser unit includes a semiconductor laser tip mounted on a substrate of a material such as Si, a monitoring photodiode, and a laser driving integrated circuit, all of which are fixed to a base member of a material, such as metal, by soldering or the like. Further, a collimator lens is fixed to the base member by using, for example, ultraviolet ray hardening resin. The base member is provided with a step or slope portion, or a cut-away portion, formed at its laser-light-emission end, whereby the laser unit can be made compact and the distance between the semiconductor laser tip and the laser driving circuit can be shortened.

Laser unit

An optical scanning apparatus has a light source unit, a first circuit board provided with the light source unit, a deflector for deflecting light beam from the light source unit, and a second circuit board provided with the deflector. The first circuit board and the second circuit board are connected electrically in such a manner that the positions thereof can be adjusted mechanically. Hence the optical beam scanner is made compact to obtain a sufficient bending strength and precision for an enhanced system reliability.

Optical beam scanner with circuit board mounted elements

A synthetic resin lens for an optical system of a scanning optical system includes a synthetic resin lens having a light guide hole for directing a light beam at a light curable adhesive formed at a mount area thereof.

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Kashiwa, Japan

Shin Mogi