An optical source unit includes a first optical source (11) for emitting a P-polarized light beam (P1), a first detector (11a) for detecting whether the first optical source (11) is normal or abnormal, a second optical source (12) for emitting an S-polarized light beam (S1), a second detector (12a) for detecting whether the second optical source (12) is normal or abnormal, and a light beam combining section (13) including a polarization beam splitter for transmitting the P-polarized light beam (P1) and reflecting the S-polarized light beam (S1) to combine the P- polarized light beam (P1) and the S-polarized light beam (S1) into an output light beam (T1) of the optical source unit (1).
OPTICAL SOURCE UNIT BY POLARIZED LIGHT BEAMS AND VEHICLE LIGHTING APPARATUS USING THE SAME
OPTISCHE QUELLENEINHEIT MIT POLARISIERTEN LICHTSTRAHLEN UND FAHRZEUGBELEUCHTUNGSVORRICHTUNG DAMIT
SOURCE OPTIQUE À FAISCEAUX DE LUMIÈRE POLARISÉE ET APPAREIL D'ÉCLAIRAGE DE VÉHICULE L'UTILISANT
2020-12-09
Patent
Electronic Resource
English
IPC: | H01S Vorrichtungen, die stimulierte Emission verwenden , DEVICES USING STIMULATED EMISSION / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / F21S Ortsfeste Leuchten , NON-PORTABLE LIGHTING DEVICES / F21Y Index-Schema in Verbindung mit den Unterklassen F21K, F21L, F21S und F21V, betreffend die Form oder die Art der Lichtquellen oder die Farbe des emittierten Lichts , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED |
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