초록 ▼

An optical apparatus, e.g. a head-mounted display apparatus, which enables observation of a favorable image by eliminating flare and ghost images caused by unwanted light coming in through the gap between an observer's eyeball and an optical unit of the apparatus. Display light of an electronic imag

An optical apparatus, e.g. a head-mounted display apparatus, which enables observation of a favorable image by eliminating flare and ghost images caused by unwanted light coming in through the gap between an observer's eyeball and an optical unit of the apparatus. Display light of an electronic image emanating from a liquid crystal display device and outside world light coming in through a liquid crystal shutter (7) are p-polarized light and therefore pass through a polarizing plate (8) and reach an observer's eyeball (1) without any loss. Meanwhile, light that undesirably comes in through the gap between the observer's face and the optical unit is generally natural light and hence unpolarized. Therefore, when the unwanted light passes through the polarizing plate (8) after being reflected from the eyeball (1) or a mirror (3), the light intensity reduces to 1/2. Although the light is successively reflected by the concave mirror (3) and the half-mirror (2) to reach the eyeball (1), the intensity ratio of the ghost image to the normal electronic image becomes 1/2. Thus, an electronic image of improved contrast can be observed.

대표청구항 ▼

[ What we claim is:] [1.] An image display apparatus comprising:an ocular optical system for leading an image to an observer's eyeball; anda reflecting mirror for reflecting said image,said ocular optical system and reflecting mirror being contained in an optical unit, said image display apparatus f

[ What we claim is:] [1.] An image display apparatus comprising:an ocular optical system for leading an image to an observer's eyeball; anda reflecting mirror for reflecting said image,said ocular optical system and reflecting mirror being contained in an optical unit, said image display apparatus further comprising:a visor formed from a polarizing plate provided on an observer's side of said optical unit; anda polarizing plate provided between said reflecting mirror and said observer's eyeball, said polarizing plate having a polarized light transmitting direction perpendicularly intersecting a polarized light transmitting direction of said visor.