| 摘要 |
The intermediate image of an image on an LCD module (142) is deflected by reflection mirrors (M1, M2) via a zoom/auto-focus control system (g), and is formed on diffusion glass (131) via a relay lens (b) and the reflection mirrors (M3, M4). A light flux diffused to about ±20° by the diffusion glass (131) projects an LCD image on the retina of an eyeball via eyepieces (132). One surface of the lens (1), closest to a crystalline lens (2), of the eyepieces (132) has an aspherical shape consisting of a conic surface, with the conic coefficient thereof set to be smaller than -1. Accordingly, an optical system having a viewing angle of at least 60° and a very small aberration is obtained.
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