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US 5,515,122 AGranted
Image displaying apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHideki Morishima, Susumu Matsumura, Naosato Taniguchi, Yoko Yoshinaga, Shin Kobayashi, Toshiyuki Sudo, Tadashi Kaneko, Norihiro Nanba, Takeshi Akiyama
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Abstract
An image displaying apparatus capable of displaying to an observer a more stereoscopic image with enhanced presence and realism. The apparatus has a display unit which irradiates a beam and an optical system which directs a light beam from said display to a pupil of an observer, a virtual image surface formed by said optical system being a curved surface.
Claims15
An image displaying apparatus comprising:
- a display unit, which irradiates a beam, and
- an optical system, for directing a light beam from said display unit to an observer's pupil, wherein a virtual image surface formed by said optical system includes a curved surface;
- wherein a curvature radius of said virtual image surface is substantially equal to a reciprocal number of a Petzval's sum of said optical system in a cross section having said curvature.
An image displaying apparatus comprising:
- a display unit, which irradiates a beam, and
- an optical system, for directing a light beam from said display unit to an observer's pupil, wherein a virtual image surface formed by said optical system includes a curved surface;
- wherein said optical system has a relay optical system and a reflection surface having a shape which is not rotationally symmetric to an optical axis of said relay optical system and having an optical power along a light beam which travels from said display unit toward said pupil.
Dependencies are inferred from the claim text.