SPECTROGRAPH

摘要

A spectrograph as disclosed includes a housing, wherein a wall of the housing includes first, second and third openings, an entrance slit located at the first opening and configured to direct light along a first light path portion in the interior of the housing, a dispersive element located at the second opening and configured to receive light from the entrance slit along the first light path portion and direct light along a second light path portion in the interior of the housing, a detector located at the third opening and configured to receive light from the dispersive element along the second light path portion. The detector can include first and second groups of light-sensitive regions. A cover can be positioned to separate the first group of light-sensitive regions from the light path, the second group of light-sensitive regions being exposed to the light path.

主权项

1. A spectrograph comprising:
a housing that includes a wall having an inner surface facing an interior of the housing, the wall including first, second and third openings; an entrance slit located at the first opening and configured to direct light along a first portion of a light path in the interior of the housing; a dispersive element located at the second opening and configured to receive light from the entrance slit along the first portion of the light path and direct light along a second portion of the light path in the interior of the housing; a detector located at the third opening and configured to receive light from the dispersive element along the second portion of the light path, the detector including a first group of light-sensitive regions and a second group of light-sensitive regions; and a cover being positioned to separate the first group of light-sensitive regions from the light path, the second group of light-sensitive regions being exposed to the light path.