公开(公告)号：US3609039A

公开(公告)日：1971-09-28

申请号：US3609039D

申请日：1968-11-19

Applicant: AGFA GEVAERT AG

Inventor： AMBRASCHKA KASIMIR

IPC: G03B27/16 ,  G03B27/54

CPC classification number: G03B27/54 ,  G03B27/16 ,  G03B27/542 ,  G03B27/545

Abstract: An illuminating assembly for illuminating an article such as a sheet located on a light-permeable support which forms a part of a structure used in connection with making microfilm photographs. The structure includes a light-permeable plate through which the light passes to reach the article which is to be illuminated, and on one side of this plate is situated a reflecting wall for reflecting light to the plate. A plurality of light sources extend at least in part to the side of the wall which is directed away from the plate, and a plurality of reflecting means respectively coact with the light sources for screening the latter against transmitting light directly to the plate while reflecting light therefrom to the wall to be reflected by the latter to the plate. An adjusting means is connected with the reflectors for adjusting the distance thereof with respect to the light-reflecting wall.

公开(公告)号：US3635135A

公开(公告)日：1972-01-18

申请号：US3635135D

申请日：1970-02-18

Applicant: AGFA GEVAERT AG

Inventor： AMBRASCHKA KASIMIR ,  BICKL HORST

IPC: G01J1/04 ,  G01J1/42 ,  G03B27/72 ,  G01J1/02

CPC classification number: G01J1/4219 ,  G01J1/04 ,  G01J1/0455 ,  G01J1/0488 ,  G03B27/72

Abstract: A light-measuring device for microfilm cameras which is adapted to measure in a point-by-point manner the brightness of an object plane. A small area of an object plane is projected by means of suitable light source via a measuring objective lens onto a measuring photoelectric cell. Light-conducting means are optically aligned with the objective lens and the light source. The photoelectric cell is mounted in the light-conducting means and has an end surface which is coplanar with an end surface of the light-conducting means. The measuring objective lens serves to also project a pattern of light defined by the shape of the end surface of the light-conducting means onto the object plane.

Abstract translation: 一种用于微缩胶片相机的光测量装置，其适于逐点测量物平面的亮度。 通过适当的光源通过测量物镜将物平面的小面积投影到测量光电池上。 导光装置与物镜和光源光学对准。 光电池被安装在导光装置中，并且具有与导光装置的端面共面的端面。 测量物镜还用于将由导光装置的端面形状限定的光线投影到物平面上。