Projection unit including glass reflector with insulative cap me

Details Projection unit including glass reflector with insulative cap me Projection unit including glass reflector with insulative cap me

1984-06-04

1984-11-13

Nelson, Peter A.

Illumination

Light source and modifier

Including selected wavelength modifier

362296, 362347, 362375, 362307, 362350, 362310, 362368, 313113, F21V 900

Patent

active

044829426

ABSTRACT:
An improved projection unit including a glass reflector having a forward reflecting portion which includes an internal substantially concave reflecting surface and an apex portion with an opening therein. An incandescent lamp is oriented such that its envelope portion is arranged relative to the reflecting surface of the reflector and its sealed end portion having a pair of spaced apart lead-in wires projecting therefrom is arranged within the reflector's opening. An electrically insulative cap member is fixedly secured to an external surface of a glass reflector immediately adjacent the reflector's rear opening. The cap member includes a pair of contacts spacedly located therein, each of these contacts being joined electrically to a respective one of the projecting lead-in wires from the incandescent lamp. In a further embodiment of the invention, a holder is provided for providing electrical connection between the projection system's circuitry and the incandescent lamp.

REFERENCES:
patent: 3314331 (1967-04-01), Wiley
patent: 3467822 (1969-09-01), Plume
patent: 3639750 (1972-02-01), Anthonijsz
patent: 3789212 (1974-01-01), Wagner
patent: 4187105 (1980-02-01), Wainer et al.
patent: 4213170 (1980-07-01), Kimball et al.
patent: 4219870 (1980-08-01), Haraden et al.
patent: 4241391 (1980-12-01), Pitkjaan et al.
patent: 4254455 (1981-03-01), Neal, Jr.
patent: 4320439 (1982-03-01), Wiley
patent: 4386292 (1983-05-01), Rothwell et al.
patent: 4389700 (1983-06-01), Blaisdell et al.

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