公开(公告)号：US3623411A

公开(公告)日：1971-11-30

申请号：US3623411D

申请日：1969-07-29

Applicant: AGFA GEVAERT AG

Inventor： GUNTHER HANS ,  KONIGL GEORG ,  KORTNER HANS ,  NICOLAY KLAUS ,  HACKENBERG HUBERT

IPC: G01J1/42 ,  G01J1/14 ,  G03B7/00

CPC classification number: G01J1/4214

Abstract: APPARATUS FOR DETERMINING THE VISUAL INTENSITY OF LIGHT COMPRISES AN INDICATOR INCLUDING ONE OR MORE INTERFERENCE MIRRORS WHICH RESPECTIVELY TRANSMIT AND REFLECT LIGHT IN A FIRST AND A SECOND RANGE OF THE VISIBLE SPECTRUM. ONE SIDE OF EACH MIRROR IS EXPOSED TO LIGHT FROM A REFERENCE LIGHT SOURCE AND THE OTHER SIDE OF EACH MIRROR CAN BE EXPOSED TO LIGHT ISSUING FROM AN UNKNOWN SOURCE, PARTICULARLY TO SCENE LIGHT, WHEREBY THE COLOR OF LIGHT COMING FROM THE MIRROR OR MIRRORS (INCLUDING TRANSMITTED LIGHT FROM THE UNKNOWN SOURCE AND REFLECTED LIGHT FROM THE REFERENCE SOURCE, OR VICE VERSA) CHANGES AS A FUNCTION OF AND INDICATES CHANGES IN THE INTENSITY OF LIGHT FROM THE UNKNOWN SOURCE.

公开(公告)号：US3644048A

公开(公告)日：1972-02-22

申请号：US3644048D

申请日：1970-06-23

Applicant: AGFA GEVAERT AG

Inventor： GUNTHER HANS ,  KONIGL GEORG ,  KORTNER HANS

IPC: G01J1/12 ,  G01J1/10

CPC classification number: G01J1/124 ,  G01J1/12

Abstract: Reference light having a first color within a predetermined spectral range is combined with a colored part of the light to be measured which has passed through a filter having a second color within a spectral range complementary to the predetermined range. When the combined light assumes a third color, the brightness of the measured light is equal to the predetermined brightness of the reference light. Reflecting grid surfaces are used for deflecting the reference light into the path of the colored part of the measured light.

Abstract translation: 具有预定光谱范围内的第一颜色的参考光与已经通过具有与预定范围互补的光谱范围内的第二颜色的滤光器的被测光的有色部分组合。 当组合的光呈现第三种颜色时，所测量的光的亮度等于参考光的预定亮度。 反射栅格表面用于将参考光偏转到测量光的有色部分的路径中。