| 摘要 |
FIELD: physics.SUBSTANCE: light angle selecting light detector device has a selector unit and a detector unit, arranged to receive light selected by said selector unit. The selector unit has a non-transparent body, having a first surface and a second surface parallel to each other and vertically separated by a distance. The device also has at least one light path spanning from a first light passing area having a first size located on said first surface to a second light passing area with a second size located on said second surface, the first and second light passing areas being arranged with a lateral displacement. Said light path allows light having an incident angle between a maximum angle and a minimum angle to pass through said selector unit.EFFECT: high accuracy of measuring light.13 cl, 8 dwg |
