Lamp and reflector combination, particularly for projectors

Details Lamp and reflector combination, particularly for projectors Lamp and reflector combination, particularly for projectors

1985-07-18

1986-08-26

DeMeo, Palmer C.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313579, 362297, H01K 150, H01K 126

Patent

active

046085122

ABSTRACT:
To prevent second-order like non-uniformities, that is, the cloud formation ffect on the image plane of a projected light source, projecting light in a film window, the reflector (3) has a profile (p) which is discontinuous and formed of a sequence of conical surface segments (F) which are successively placed on the reflector from the apex to the rim and which have different angles with respect to the axis or center line (CL) of the reflector. Each one of the areal segments, in cross section, has a length (1) which is so dimensioned that the overall length of the images of the projected filament (2) of the lamp in the plane of the film window is equal to or larger than the diagonal of the image field, and adjacent segments intersect in a discontinuous reflector or profile in intersection circles which lie on a curve (K) forming a continuous reflector profile, which continuous reflector profile may be in accordance with any standard arrangement.

REFERENCES:
patent: 3241437 (1966-03-01), Thiels
patent: 3936686 (1976-02-01), Moore
patent: 4021659 (1977-05-01), Wiley
patent: 4277821 (1981-07-01), Sassmannshausen
patent: 4417300 (1983-11-01), Bodmer

Affiliated with

Also associated with

Rating

Lamp and reflector combination, particularly for projectors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lamp and reflector combination, particularly for projectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lamp and reflector combination, particularly for projectors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2313920