To suppress the relative positional deviation of portions that function as a pair of mirrors in an optical member and suppress superimposition of other light on emission light in a dead angle auxiliary device.SOLUTION: An optical member comprises: an incidence surface 2a on which ambient light is incident; an emission surface 2b which has a plurality of emission parts 21 and flat parts 22; and a smooth surface 2c which is arranged so as to be opposed to the plurality of flat parts 22. The optical member 2 is made of a translucent material and reflects incident light by total reflection on the flat parts 22 and the smooth surface 2c. The optical member 2 is attached to a storage part of a holding member 3 and is fixed in such a state that there is a prescribed or greater gap between the smooth surface 2c and a bottom surface 31a of the storage part. A light shielding member 4 is arranged on an end on at least the incidence surface 2a side of the gap between the surface on the smooth surface 2c side of the optical member 2 and the holding member 3.SELECTED DRAWING: Figure 3
【課題】死角補助装置において、光学部材のうち一対のミラーとして機能する部位の相対位置ズレを抑制すると共に、射出光への他の光の重畳を抑制する。【解決手段】光学部材は、外景光が入射する入射面2aと、複数の射出部21および平坦部22を有する射出面2bと、複数の平坦部22に対して対向配置された平滑面2cとを有する。光学部材2は、透光性材料で構成され、平坦部22および平滑面2cにおいて入射光を全反射により反射する。光学部材2は、保持部材3の収容部に取り付けられ、平滑面2cと収容部の底面31aとの間に所定以上の隙間が生じた状態で固定される。光学部材2の平滑面2c側の面と保持部材3との隙間のうち少なくとも入射面2a側の端部には、遮光部材4が配置されている。【選択図】図3
DEAD ANGLE AUXILIARY DEVICE
死角補助装置
2023-12-07
Patent
Electronic Resource
Japanese