PROBLEM TO BE SOLVED: To provide a light source device that can suppress a reduction in detection accuracy while suppressing an increase in cost.SOLUTION: A light source device 11 comprises: a light source (LD); an optical element (optical path branching element 118) on which light from the light source is incident and which includes a branching surface (optical path branching surface) that branches the incident light into transmitted light and reflected light; and a photodetector 120 that receives the reflected light. The light source and the optical element are arranged so that the number of p-polarization components of the incident light with respect to the branching surface becomes larger than the number of s-polarization components. In this case, there can be provided a light source device that can suppress a reduction in detection accuracy while suppressing an increase in cost.SELECTED DRAWING: Figure 11
【課題】 高コスト化を抑制しつつ検出精度の低下を抑制できる光源装置を提供する。【解決手段】 光源装置11は、光源(LD)と、該光源からの光が入射され、入射光を透過光と反射光に分岐する分岐面(光路分岐面)を有する光学素子(光路分岐素子118)と、反射光を受光する光検出器120と、を備え、入射光の分岐面に対するP偏光成分がS偏光成分よりも多くなるように光源と光学素子が配置されている。この場合、高コスト化を抑制しつつ検出精度の低下を抑制可能な光源装置を提供できる。【選択図】図11
LIGHT SOURCE DEVICE, IMAGE DISPLAY DEVICE, AND OBJECT DEVICE
光源装置、画像表示装置及び物体装置
2017-08-24
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 |
LIGHT SOURCE UNIT, IMAGE DISPLAY DEVICE, AND OBJECT DEVICE
European Patent Office | 2018
|LIGHT SOURCE DEVICE, IMAGE DISPLAY UNIT AND OBJECT DEVICE
European Patent Office | 2018
|