US 6,969,846 B2 · Light source unit and scanning optical apparatus using the same

Abstract

The present invention has as its object to provide a light source unit in which the relative portion of a detecting device and a condensing device is accurately determined, whereby the detecting device can reliably detect a laser beam, and a scanning optical apparatus using the same, and for this purpose, the present invention provides a scanning optical apparatus having a light source, a holding member for holding the light source, a deflecting device for deflecting light emitted from the light source, a detecting device for detecting the light deflected by the deflecting device, and a condensing lens for condensing the light incident on the detecting device, wherein the holding member positions the detecting device, and holds the condensing lens.

Claims6

Dependent claims

A scanning optical apparatus comprising:

a multibeam light source having a plurality of light emitting points;
a holding member for holding said multibeam light source;
deflecting means for deflecting light emitted from said multibeam light source;
an optical box for containing said deflecting means;
detecting means for detecting the light deflected by said deflecting means;
and
condensing means for condensing the light incident on said detecting means;
wherein said holding member positions said detecting means, and holds said condensing means, and
wherein said holding member is attached to said optical box so as to be rotatable about an optical axis of the light emitted from said multibeam light source.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/373,012Filed 26 Feb 2003

Priority

JP 2002-05472228 Feb 2002

Published

US 2003/0173508 A118 Sep 2003

Granted

29 Nov 2005

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04N 1/06
Scanning arrangements , i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing…:…
G02B 26/124
Using multifaceted mirrors: details of the optical system between the light source and the polygonal mirror
G02B 26/125
Using multifaceted mirrors: details of the optical system between the polygonal mirror and the image plane
G02B 26/127
Using multifaceted mirrors: adaptive control of the scanning light beam, e.g. using the feedback from one or more detectors

Light source unit and scanning optical apparatus using the same

Life of this patent

Light source unit and scanning optical apparatus using the same

Life of this patent

Abstract

Claims6