Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1994-02-09
1996-04-30
Epps, Georgia Y.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359630, 359434, 359728, G02B 2714, G02B 1700
Patent
active
055130410
ABSTRACT:
A visual display apparatus which enables observation of an image that is flat and clear as far as the edges of visual field at a view angle of 40.degree. or more and which ensures a large exit pupil diameter. The visual display apparatus has a two-dimensional image display device (14) for displaying an image for observation, a relay optical system (15) for projecting in the air a real image of the image display device (14), and an ocular concave reflecting optical system (3) for projecting the real image as an enlarged image in the air and for reflectively bending the optical axis. A decentered correcting optical system (8) which has surfaces decentered with respect to each other is disposed between the relay optical system (15) and the ocular concave reflecting optical system (3). The angle of reflective bending by the ocular concave reflecting optical system (3) is preferably 60.degree. or more.
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Epps Georgia Y.
Mack Ricky
Olympus Optical Co,. Ltd.
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