公开(公告)号：US06341200B1

公开(公告)日：2002-01-22

申请号：US09306352

申请日：1999-05-06

申请人： Kazuhiro Nakanishi ,  Kunikazu Takano ,  Hiroshi Kibayashi ,  Hiromi Nakanishi ,  Tetsufumi Takaba ,  Wataru Hiroshima ,  Tsuyoshi Takeda ,  Akira Aoki ,  Kanichi Onda

发明人： Kazuhiro Nakanishi ,  Kunikazu Takano ,  Hiroshi Kibayashi ,  Hiromi Nakanishi ,  Tetsufumi Takaba ,  Wataru Hiroshima ,  Tsuyoshi Takeda ,  Akira Aoki ,  Kanichi Onda

IPC分类号： G03B1702

CPC分类号： G03B17/02

摘要： A lens-fitted film unit includes: a main body; a photographic lens provided in the main body, having an aperture value; an aperture provided in the main body; a shutter provided in the main body, having a shutter speed; a photographic film loaded in the main body, having image frames each including an unexposed portion and a pre-exposed portion on which a latent image has been formed; and a masking member for masking the pre-exposed portion of the photographic film when a photographing operation is conducted. The latent image has been formed on the photographic film with a same exposure amount as that obtained when an object to be photographed having a brightness of not less than 10 and not more than 12.5 in terms of light values in which a photographic film whose ISO sensitivity is 100, is exposed to light with an aperture value of the photographic lens set by the aperture and with the shutter speed of the shutter.

摘要翻译： 透镜配合膜单元包括：主体; 设置在主体中的具有孔径值的摄影镜头; 设置在主体中的孔; 设置在主体中的具有快门速度的快门; 装载在主体中的摄影胶片，具有各自包括未曝光部分的图像帧和在其上形成潜像的预曝光部分; 以及掩模构件，用于在进行拍摄操作时掩蔽摄影胶片的预曝光部分。 曝光量与摄影胶片的曝光量相同时，曝光量与摄影胶片的ISO感光度相比，其亮度不低于10，但不高于12.5， 是100，被曝光到具有由光圈设置的摄影镜头的光圈值和快门的快门速度的光。