Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1995-02-07
1999-07-13
Nelms, David C.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359637, G02B 2714
Patent
active
059234776
ABSTRACT:
A compact image display apparatus having a wide exit pupil diameter, which enables observation of an image that is flat and clear as far as the edges of visual field at a field angle of 40.degree. or more. The apparatus includes an image display device (8) for displaying an image, a relay optical system (7) for relaying the image to form a relay image, and an ocular optical system having a reflecting surface (2) that bends a bundle of light rays emanating from the relay optical system (7) and forming an exit pupil (1) of the relay image. The ocular optical system has an entrance-side optical surface (6) provided in an optical path extending from the relay optical system (7) to the reflecting surface (2), and an exit-side optical surface (5) provided in an optical path along which the ray bundle bent by the reflecting surface travels to reach the exit pupil (1) and having a power different from that of the entrance-side optical surface (6).
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Mack Ricky
Nelms David C.
Olympus Optical Co,. Ltd.
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