Composite reflecting mirror for headlamp

Details Composite reflecting mirror for headlamp Composite reflecting mirror for headlamp

1986-08-01

1988-10-18

Scott, Samuel

Illumination

Light modifier

Reflector

362310, 362348, F21V 700

Patent

active

047791799

ABSTRACT:
A composite reflecting mirror for a headlamp comprises a plurality of paraboloidal columnar reflecting surfaces, the reflecting surfaces having their respective focal points fall on a horizontal line extending through approximately the axis of symmetry of the mirror. The composite reflecting mirror is laterally substantially divided into three portions, i.e., a left end portion, a right end portion and a central portion. The relationship of the average value of the focal lengths of the plurality of paraboloidal columnar reflecting surfaces included in the respective portions is such that the average value of the focal lengths of the left end portion is greater than that of the central portion, and the average value of the focal lengths of the right end portion is greater than that of the central portion.

REFERENCES:
patent: Re17825 (1930-10-01), Linton et al.
patent: 1504017 (1924-08-01), Bailey
patent: 1513844 (1924-11-01), Michel
patent: 1568505 (1926-01-01), Fishleigh
patent: 1621585 (1927-03-01), Godley
patent: 2174937 (1939-10-01), Dietz
patent: 3688149 (1972-08-01), Pitkjaan
patent: 4143412 (1979-03-01), Sassmannshausen
patent: 4149229 (1979-04-01), Draper
patent: 4225903 (1980-09-01), Buchleitner
patent: 4277821 (1981-07-01), Sassmannshausen
patent: 4351018 (1982-09-01), Fratty
patent: 4446511 (1984-05-01), Sands

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