Low-pressure sodium vapor discharge lamp

Details Low-pressure sodium vapor discharge lamp Low-pressure sodium vapor discharge lamp

1975-11-12

1976-11-30

Rolinec, R. V.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313112, H01J 724, H01J 6135

Patent

active

039951820

ABSTRACT:
The invention relates to a low pressure sodium vapor discharge lamp for generating a directed light beam in which the lamp is provided with a cylindrical discharge tube which is enveloped by a cylindrical outer bulb.
According to the invention the inside of the outer bulb is provided, in a cross-section of the lamp over at least 270.degree. of arc, with a reflecting layer which has a large reflection factor for sodium light and a very small reflection factor for infra-red radiation.
The lamp according to the invention may for example be used in an exposure apparatus for photocopying texts and figures.

REFERENCES:
patent: 3162785 (1964-12-01), Scoledge et al.
patent: 3174067 (1965-03-01), Bahrs
patent: 3188513 (1965-06-01), Hansler
patent: 3225241 (1965-12-01), Spencer et al.
patent: 3400288 (1968-09-01), Groth
patent: 3767956 (1973-10-01), Bauer

Affiliated with

Also associated with

Rating

Low-pressure sodium vapor discharge lamp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low-pressure sodium vapor discharge lamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-pressure sodium vapor discharge lamp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1056950