Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1992-09-16
1994-10-11
Henry, Jon W.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359634, 359351, 359400, 359727, G02B 2710, G02B 718, G02B 2312, G02B 2732
Patent
active
053552245
ABSTRACT:
There is provided an improved optical viewing device (10) in which variable compass heading information (80) and stadiametric range measuring information (88), (106), (118) is superimposed upon the image of a scene viewed through a viewing optical system (13) within the device (10). A self-luminous display panel (36) displays the information in the form of graphical symbols and/or alphanumeric characters. A folding lens (38) reflects light from the display panel (36) to a correcting lens (40), which transmits the light to a reflecting means (41) or (52). The reflecting means (41) or (52) reflects the light to a mangin mirror (44) or (62), which reflects the light to a dichroic combiner (28) or (50). The dichroic combiner (28) or (50) transmits the light into the path of the viewing optical system (13) such that the information displayed on the display panel (36) is effectively superimposed upon the image of the scene viewed by the user. A dichroic coating on dichroic combiner (28) or (50) reflects light of wavelengths associated with the viewing optical system (13) and transmits light associated with the illuminated display panel (36). An alternative embodiment employs a holographic element (72) to superimpose the information from display panel (36) upon the image of the scene.
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Henry Jon W.
Varo Inc.
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