KR860700283A - Lighting system reflector - Google Patents

Abstract

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Description

Lighting system reflector

Since this is an open matter, no full text was included.

The features and objects of the present invention will now be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view of a reflector constructed in accordance with the present invention.

Claims (12)

A discharge lamp 34 having electrodes 30, 32 arranged at a pair of intervals to generate an area of light rays 29 having a luminance gradient that varies from the maximum luminance adjacent to one electrode to a less intense luminance adjacent to the second electrode. The light source 26 comprising a light source 26 and spaced apart across the aperture 25 where the spaced apart electrodes 30, 32 and the region of light rays 29 between them meet a line defining the system axis. In the illumination system for even distribution, the reflector 18 constitutes an elliptical rotating surface around the system longitudinal axis A which is concentric with the line between the electrodes 30, 32 through the region of the light beam 29, The axis 22 is displaced by a predetermined distance DH from the cutoff point of this ellipsoidal plane and the ellipsoidal axis, and a relatively uniform light distribution 50-88 by an angle [theta] in relation to the system axis A before rotation. At the size that occurs at both ends of the aperture 25 Lighting system characterized in that the inclined. The system side (A) according to claim 1, wherein the axis (22) of the ellipsoidal surface (18) is displaced from (D) and before rotating around the system side (A) to increase the amount of light distribution across the aperture (25). A system inclined at an angle (θ) selected from The method of claim 2, wherein the ellipsoidal surface 18 has a draw distance CTHRO, a cone angle α, an eccentricity c / a, an ellipse diameter 2a, an aperture offset ZAP, a source offset Z _OFF . And based on aperture keying (d). 3. The system according to claim 2, characterized in that the shape of the electrodes (30, 32) spaced apart is limited within the envelope (40) causing the image (46) of the light rays (26) adjacent to the electrodes to be displaced. The area of maximum brightness of the light source 26 is displaced from the first focal point 28 of the ellipsoid by a predetermined size Z _OFF to increase the uniformity of the light distribution across the aperture 255. System characterized in that. 2. The selected distance DH + (ac) sinθ according to claim 1, wherein the aperture 25 and the first focal point 28 of the ellipsoid are rotated around the longitudinal axis to increase the uniformity of the light distribution across the aperture 25. System), which is arranged apart from each other. The angle θ between the line extending from the distal end of the aperture 25 to the distal end of the reflector 18 and the axis A of the system increases the uniformity of the light distribution across the aperture 25. So that it is selected prior to rotation about the longitudinal axis in order to make it work. The system of claim 1, wherein the displaced and predetermined distance DH ranges from about 0.688 to about 0.888 mm. The system of claim 2, wherein the angle θ ranges from about 0.374 ° to about 0.574 °. The system of claim 1, wherein the displacement DH increases the condensing efficiency at the aperture. 7. The system of claim 6, wherein the selected distance is such that the image displacement generated by the envelope of the discharge lamp is indistinguishable to provide the required displacement DH of the intersection. The system of claim 1, wherein the illumination system is used in a liquid crystal light valve projector system. ※ Note: It is to be disclosed based on the initial application.