| 摘要 |
<p>A light guiding device 100 may receive incident light, such as infra-red light, emitted by a light source 10 through a capture surface 101. The received light exits the light guiding device 100 through an exit surface 102 provided adjacent to and aligned with an aperture 21 of light receiver or image intensifier 20. The direction of the light is changed by reflector 103. Light from the light source 10 can be inserted into the receiver 20 where it may be combined with additional incident light captured by the receiver 20. In this way a user can see a composite image of captured light in the visible and infra-red ranges. The operation of the light source 10 can be controlled to vary the intensity of the light emitted such as in response to the sensed ambient light level.</p> |
