To provide an optical system that reduces the influence of unnecessary light with a compact light path configuration, an image projection device, and a movable body.SOLUTION: An optical system 100 comprises: a light modulation element 103 that emits incident light 250 in a first direction or a second direction that are different from each other; and an optical element 102 that emits radiation light 250 radiated from a light source 101 toward the light modulation element 103 as the incident light 250. The optical element 102 has a boundary surface B that transmits first emission light 200 emitted in a first direction from the light modulation element 103 and guided to a projection object, and one of second emission light 201 emitted in a second direction from the light modulation element 103 and the radiation light 250, and reflects the other.SELECTED DRAWING: Figure 1
【課題】コンパクトな光路構成で不要光の影響を低減する光学系、画像投射装置および移動体を提供すること。【解決手段】光学系100は、入射光250を互いに異なる方向である第1の方向または第2の方向に出射する光変調素子103と、光源101から照射される照射光250を、入射光250として光変調素子103に向けて出射する光学素子102と、を備え、光学素子102は、光変調素子103から第1の方向に出射されて投射対象に導光される第1の出射光200と、光変調素子103から第2の方向に出射された第2の出射光201および照射光250と、のうち一方を透過し、他方を反射する境界面Bを有する。【選択図】図1
OPTICAL SYSTEM, IMAGE PROJECTION DEVICE, AND MOVABLE BODY
光学系、画像投射装置および移動体
2020-05-07
Patent
Electronic Resource
Japanese
IPC: | G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien |
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