Microfilming camera
AssigneeFuji Photo Film Co., Ltd.
InventorsTakeshi Okano, Sadaaki Nakaoka
Life of this patent
Estimating the term…
Abstract
A microfilming camera for taking an microimage of a document on a film. The microfilming camera comprises a main mirror disposed beneath a transparent document support for the support thereon of a document to be microfilmed, which main mirror is used to deflect the optical path of a photo-taking system, a side mirror disposed on each side of the space delimited between the document support and the main mirror, and illuminating sources positioned exteriorly of the optical path and disposed in face-to-face relationship with the respective side mirrors.
Claims5
A microfilming camera comprising a main mirror disposed beneath a transparent document support for the support thereon of a document to be microfilmed, which main mirror is used to deflect the optical path of a photo-taking system, a side mirror disposed on each side of the space delimited between the document support and the main mriror, and illuminating sources positioned exteriorly of the optical path and disposed in face-to-face relationship with the respective side mirrors, inwardly of said side mirrors and forwardly of the main mirror, and light shields having internal mirror surfaces positioned about said illumination sources and limiting illumination therefrom to that in the direction of said side mirrors while preventing direct illumination of said main mirror whereby rays of light emanating from the illuminating sources are directed from the illuminating sources, first to the side mirrors and then towards the main mirror which in turn directs them towards the document support to illuminate the document placed on the document support eliminating the possibility of mirror reflection of respective images of the illuminating sources while creating an optical path of sufficient length for proper illumination of the document to be microfilmed while rendering the camera assembly as a whole compact.
A microfilming camera comprising a main mirror disposed beneath a transparent document support for the support thereon of a document to be microfilmed, which main mirror is used to deflect the optical path of a photo-taking system, a side mirror disposed on each side of the space delimited between the document support and the main mirror, an illuminating sources positioned exteriorly of the optical path and disposed in face-to-face relationship with the respective side mirrors, whereby rays of light emanating from the illuminating sources are directed from the illuminating sources to the side mirrors and then towards the main mirror which in turn directs them towards the document support to illuminate the document placed on the document support, wherein each of the illuminating sources comprises an illuminating lamp having a built-in filament, and a light collecting reflector block, said light collecting reflector block including an upper arcuate reflector arcuately curved about the filament of the illuminator lamp, a side arcuate reflector and a side Fresnel reflector both continued downward from the upper arcuate reflector, a side flat reflector positioned below the side Fresnel reflector, and a lower flat reflector continued from the side flat reflector towards a position below the illuminator lamp.
Dependencies are inferred from the claim text.