Optical device using a point light source

Details Optical device using a point light source Optical device using a point light source

1996-04-10

1999-01-12

Spyrou, Cassandra C.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359196, 359197, G02B 2608

Patent

active

058597212

ABSTRACT:
The light emitted from a point light source is converged by a relay lens to form an intermediate image which is an enlarged image of the light source. The light source and the relay lens are accommodated in the same lens-barrel, and are thereby united as a light source unit. When a problem occurs in the light source, the light source is not independently replaced, but the light source unit is replaced as a unit. That is to say, the intermediate image formed by the light source unit is used as an apparent new light source (referred to as a "pseudo light source"). The emitted luminous flux from this pseudo light source is made parallel by a collimator lens and then is linearly focused into an image on a reflection plane of a deflector by a first cylindrical lens. First cylindrical lens 6 has its focal point in a plane including the rotation axis of the deflector and a slit. The light deflected by the deflector is focused into an image with a prescribed beam diameter on a photosensitive material by a second image forming optical system formed of an f.theta. lens and a curved second cylindrical lens.

REFERENCES:
patent: 4235507 (1980-11-01), Kataoka et al.
patent: 4397529 (1983-08-01), Taira
patent: 4947402 (1990-08-01), Kane
patent: 5052767 (1991-10-01), Sugata et al.
patent: 5170278 (1992-12-01), Wada et al.
patent: 5337182 (1994-08-01), Tomita
patent: 5557449 (1996-09-01), Miyagawa et al.

Affiliated with

Also associated with

Rating

Optical device using a point light source does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical device using a point light source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical device using a point light source will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1521246