Electric lamp arrangement with reflector

Details Electric lamp arrangement with reflector Electric lamp arrangement with reflector

1992-08-06

1994-09-06

Yusko, Donald J.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313114, 313634, 362297, 362298, 362310, 362346, 362347, H01J 516, F21V 700

Patent

active

053451406

ABSTRACT:
An electric lamp arrangement includes a reflector (10) having first and second mirror walls (12 and 22), which in axial sections are curved according to circular arcs (13, 23), the centers of which lie in an area between lines (15, 16) enclosing angles .beta. and .gamma. with a plane P defining the largest diameter (d), and in an ellipse-shaped area Q, respectively. The reflector has a relatively small, light-emitting window (30) of at most 0.7 d, disposed opposite a lamp base (1). An electric light source (3) is disposed within the reflector (10) near plane P and an axis (11). The reflector (10) may be integral with a lamp vessel (5) to give a reflector lamp or a pressed-glass lamp. Alternatively, the light source may have an envelope and may be secured within the reflector to constitute a lamp-reflector unit. The reflector effectively shapes radiation emitted by the light source into a wide beam of high intensity. Embodiments provide an equal illumination of a large area by means of several light sources arranged beside each other. Other embodiments provide a homogeneous illumination of a relatively large area.

REFERENCES:
patent: 4021659 (1977-05-01), Wiley
patent: 4788469 (1988-11-01), Holten
patent: 4803394 (1989-02-01), Holten
patent: 5084648 (1992-01-01), Holten
patent: 5099168 (1992-03-01), Holten

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