Lens holder for disk film of exposure device

Abstract

Abstract PURPOSE:To perform LATD photometry even in case of a disk film, by providing a photometric window for LATD photometry to the position inside and under a negative mask for a disk. CONSTITUTION:The titled disk lens holder is suitable for the exposure device of a photographic printing machine which has mutually replaceable negative masks both for the disk and a 135 film under the optical axis of a light source 1 for exposure. This holder has the photometric window 9 for the LATD photometry to the position inside and under the disk negative mask 2a; and a lens 12 for the disk fitted fixedly by the disk lens holder 13, a lens 18 for 135 half-size, an LATD photometric device and a lens 19 for 135 full-size, a lens 18 for 135 half- size, and a lens hood 17 for the disk are fitted movably at a printing position, forming an optical path necessary for the exposure of a disk film 10 or 135 film.

Inventors

• 👤 Hisanori Umitsuma
• 👤 海妻　久敬
• 👤 Haruo Hakamata
• 👤 袴田　晴夫

Bibliographic Details