Search International and National Patent Collections

1. (WO1998028736) OPTICAL SYSTEM HAVING AN INCREASED ANGULAR SCAN RANGE

Pub. No.:    WO/1998/028736    International Application No.:    PCT/IB1997/001520
Publication Date: Fri Jul 03 01:59:59 CEST 1998 International Filing Date: Fri Dec 05 00:59:59 CET 1997
IPC: G02B 26/10
G06K 7/10
G11B 7/003
Applicants: KONINKLIJKE PHILIPS ELECTRONICS N.V.
PHILIPS NORDEN AB
Inventors: SCHLEIPEN, Johannes
THOMASON, Graham
Title: OPTICAL SYSTEM HAVING AN INCREASED ANGULAR SCAN RANGE
Abstract:
The invention relates to an optical system (1) comprising a radiation source (3) for supplying a radiation beam, and means for providing the radiation beam with a scanning movement through an angular range ΔΥ. The light path of the scanning radiation beam incorporates at least one set of two optical interfaces (9, 11). The two interfaces (9, 11) mutually enclose an angle α and enclose a material having a refractive index n which is different from that of its surroundings.