Night vision system and method
OwnerConsta Jolsoninventor
Life of this patent
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Abstract
A night vision system in which a lamp radiating toward the pupil of a user has its intensity controlled in response to the sensing of other illumination directed toward the user's pupil, so that pupil size is reduced in the anticipation of an increase in illumination which would otherwise considerably reduce retinal sensitivity.
Claims9
A night vision system comprising a pupil oriented lamp for direction toward a user's eye, sensor means for sensing additional illumination directed toward the pupil, and control means operatively connected between said sensor means and pupil oriented lamp for varying the intensity of the latter responsive to additional illumination sensed, to contract the pupil for receiving radiation from said additional illumination without dangerous loss of retinal sensitivity and, said sensor means comprising directional photo-sensitive means for only sensing additional illumination in a path directly ahead of a user.
In the method of enhancing night vision, the steps comprising:
- directing a pupil lamp toward the user's eye to moderate dilation of the pupil, sensing oncoming illumination in the path directly ahead of the user, and increasing the intensity of the pupil lamp responsive to sensed oncoming illumination, to contract the pupil for more comfortably receiving radiation from said oncoming illumination.
Dependencies are inferred from the claim text.