PROBLEM TO BE SOLVED: To provide a mirror unit capable of holding a reflection part at a desired position even when the temperature changes.SOLUTION: The mirror unit includes: a reflection part 51 having a reflection surface 51a on a tabular substrate; a holder 52 that is made of a material different from the substrate and holds the reflection part 51; a first adhesion member 57 that is disposed between the holder 52 and the reflection part 51 and bonds the holder 52 and reflection part 51 to substantially center parts of the opposite surfaces; and a plurality of second adhesion members 58 that have a shape different from that of the first adhesion member 57, are disposed outside the first adhesion member 57, and bond the holder 52 to the reflection part 51.SELECTED DRAWING: Figure 5
【課題】 温度変化があっても所望の位置にて反射部を保持できるミラーユニットを提供する。【解決手段】 板状の基材に反射面51aを有する反射部51と、前記基材と異なる材質からなり、反射部51を保持するためのホルダ52と、を備え、ホルダ52と反射部51との間において、対向面の略中央箇所にホルダ52と反射部51とを接着する第1の接着部材57と、第1の接着部材57と異なる形状で、第1の接着部材57よりも外側に複数設けられ、ホルダ52と反射部51とを接着する第2の接着部材58と、を設ける。【選択図】図5
MIRROR UNIT
ミラーユニット
2017-12-14
Patent
Electronic Resource
Japanese