ILLUMINATION DEVICE
ILLUMINATION DEVICE
- New search for: KURASHIGE MAKIO
- New search for: NISHIO SHUMPEI
- New search for: KURASHIGE MAKIO
- New search for: NISHIO SHUMPEI
The present invention enables a desired projection pattern on a surface to be illuminated such as a road surface, a ground surface, a floor surface, a surface below water, and a wall surface, and enables a projection position and/or a projection orientation of the projection pattern to be changed. A laser beam from a light emission unit (111) is shaped into a parallel light through an optical shaping system (112), and an incident surface (P2) of a diffraction optical element (120) recording a hologram image is irradiated with the parallel light. A projection pattern (E) of an arrow oriented in a predetermined direction (D) is projected as a hologram reconstructed image on a surface to be illuminated (U) on a road surface. An optical-element drive unit (130) rotates the diffraction optical element (120) about a rotation axis (Rx) in a rotation plane (P1) orthogonal to an optical axis (C) of a parallel incident light (L). By means of the rotation, a geometric positional relationship of the diffraction optical element (120) with respect to the surface to be illuminated (U) is changed, whereby an orientation (D) of the arrow projection pattern (E) on the road surface can be changed.
Document information
ILLUMINATION DEVICE
BELEUCHTUNGSVORRICHTUNG
APPAREIL D'ÉCLAIRAGE
2023-07-05
Patent
Electronic Resource
English
| IPC: | 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 / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / F21W Index-Schema in Verbindung mit den Unterklassen F21K, F21L, F21S und F21V, betreffend den Gebrauch oder Einsatz von Leuchten oder Beleuchtungssystem , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS / 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 / G03H Holografische Verfahren oder Vorrichtungen , HOLOGRAPHIC PROCESSES OR APPARATUS |
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