H - Electricity – 01 – K
Patent
H - Electricity
01
K
313/85
H01K 1/02 (2006.01) H01K 1/18 (2006.01)
Patent
CA 1135779
27-06-1979 1 PHN 9265 ABSTRACT: Bowl mirrored lamps according to the invention have a filament (9) which is arranged asymmetrically with respect to the axis (8) of the lamp envelope and surrounds said axis over an angle greater than 180° in such a manner that it does not coincide at any point with the image (17) of the filament formed by the mirrored bowl portion of the lamp envelope. As a result of this filament positioning the lamp can in combination with a reflector provide a light beam having a very high central intensity.
338400
Fitzgerald John
Kesseler Jan A.h.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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