Color night vision apparatus
First Claim
1. A color night vision apparatus, comprising:
- at least three image intensifier tubes, each one associated with a different one primary color, each tube having an input for receiving a low light image and an output for providing an intensified image, an input dichroic frequency splitter positioned between the input of each tube and having an input port for receiving said low light image, and directing said input signal to said input of each tube, to cause each tube to provide an intensified output signal of said input signal and according to the primary color content in said input signal as associated with said respective tube, and means responsive to said output signals of each tube for combining said signals indicative of each primary color to provide an output color image indicative of said low light image.
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Abstract
There is disclosed a color night vision device, which employs a separate image intensifier for each primary color. Thus, the apparatus employs an image intensifier for red, an image intensifier for green and an image intensifier for blue. In one embodiment, each image intensifier produces an image of that color from light which is distributed to the input of the image intensifier through a dichroic X-Cube system. The output of each image intensifier produces an image corresponding to the input image of a corresponding color. Thus, the green image intensifier produces a green image, the red image intensifier produces a red image and the blue image intensifier produces a blue image. The three images are superimposed or combined to produce a true color output image. Superimposition of the images can occur by means of a suitable dichroic output device which is similar to the dichroic input device or in alternate embodiments, the use of bent fibers or charge coupled display devices.
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Citations
12 Claims
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1. A color night vision apparatus, comprising:
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at least three image intensifier tubes, each one associated with a different one primary color, each tube having an input for receiving a low light image and an output for providing an intensified image, an input dichroic frequency splitter positioned between the input of each tube and having an input port for receiving said low light image, and directing said input signal to said input of each tube, to cause each tube to provide an intensified output signal of said input signal and according to the primary color content in said input signal as associated with said respective tube, and means responsive to said output signals of each tube for combining said signals indicative of each primary color to provide an output color image indicative of said low light image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification