This invention discloses a light guide fixation unit configured to aid a light sensor in reading data on the wavelength range of light from a microfilming device. The light guide fixation unit comprises a fixation portion configured to hold and to fix the microfilming device in place, and a light guide portion integrated into the fixation portion. The light guide portion further comprises a light input surface and a light output surface, wherein the light guide portion is connected to one side of the fixation portion wherein the optical axis of the light exit port of the microfilming device intersects the light input surface, and the optical axis of the optical pickup head of the light sensor intersects the light output surface.本發明揭露一種用於輔助光學感應器自微型攝影裝置讀取一波長範圍光資訊的導光固定元件,具有用來容納並固定該微型攝影裝置的固定部;以及與該固定部一體成型之導光部,該導光部具有入光面及出光面,其中該導光部連接該固定部於一側;其中該微型攝影裝置之出光口之光軸與該入光面交會;該光學感應器之讀取頭光軸與該出光面交會。10‧‧‧導光固定元件11‧‧‧固定部12‧‧‧導光部121‧‧‧入光面122‧‧‧出光面123‧‧‧連接面
