Device for focusing a film frame

Details Device for focusing a film frame Device for focusing a film frame

G - Physics

03

B

G03B 13/32 (2006.01) G03B 3/00 (2006.01) G03B 3/02 (2006.01)

Patent

CA 2260000

The invention relates to a device for focusing a film frame in a motion- picture camera with a camera housing (1) which has a lens carrier (5) for holding a camera lens (3) with a camera end which forms a lens plane, and a picture aperture (6) along which a film (F) is moved using a film-conveying mechanism (8) in a picture plane. Means (9) for altering the distance between the lens plane and the picture plane is provided.

L'invention concerne un dispositif servant à la mise au point d'une image de film dans une caméra pourvue d'un boîtier (1) comprenant un porte-objectif (5) dans lequel vient se loger un objectif de caméra (3), dont le côté tourné vers la caméra constitue un plan d'objectif, et une fenêtre de cadrage (6), sur laquelle un film (F) est déplacé le long d'un plan d'image, au moyen d'un mécanisme de transport de film (8). Dans ce dispositif, il est prévu, selon l'invention, de monter un dispositif (9) servant à modifier l'écart entre le plan de l'objectif et le plan d'image.

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