Patent ID: 6402343
Filing Date: 2002-06-11
Classification: F21V,G02B,H01J

Abstract:
A lighting device comprising:a lamp (1; 19) with a tubular lamp vessel (112) and aperture (117), and an optical system (8, 9; 110) for influencing light rays emitted by the lamp (1; 19) in a region of the aperture (117) during lamp operation, wherein the optical system (8, 9; 110) includes a first curved optical means (8) and a second optical means (9) wherein, viewed in a sectional plane perpendicular to the lamp's longitudinal axis, the first curved optical means (8) bundles light-ray distribution emitted by area elements in the region of the aperture toward a normal to a respective area element, and the second optical means (9) deflects at least some of the bundled light-ray distribution arriving from the first curved optical means by a deflection angle (&dgr;), the deflection angle being defined as the angle between an original main radiating direction and a deflected main radiating direction of a respective light bundle, wherein the deflection angles of at least some of the light bundles have different values.