초록 ▼

An image display apparatus, for example, a head-mounted image display apparatus, which has a compact magnifying optical system designed so that the horizontal angle of view is as wide as 30°or more, and yet the most off-axis distortion can be reduced to about 5%. The image display apparatus has a di

An image display apparatus, for example, a head-mounted image display apparatus, which has a compact magnifying optical system designed so that the horizontal angle of view is as wide as 30°or more, and yet the most off-axis distortion can be reduced to about 5%. The image display apparatus has a display device (D), an optical system (L+R) for projecting the content of information displayed by the display device (D) on an observer\s eyeball as a enlarged virtual image without effecting image formation in the optical path, and an optical axis bending device (P) for bending the optical axis of the optical system. The optical axis bending device (P) is a beam splitter prism having a semitransparent surface. The beam splitter prism has an aspherical surface (r11) constituting a surface thereof which faces the display device (D). The aspherical surface (r11) is shaped so that the power thereof changes from a relatively positive value to a relatively negative value as the distance from the optical axis of the prism increases toward the periphery thereof.

대표청구항 ▼

A head-mounted image display apparatus comprising: an image display device for displaying an image, and an ocular optical system for forming an exit pupil to lead said image into an observer\s eyeball, wherein said ocular optical system includes a prism having a predetermined surface having both ref

A head-mounted image display apparatus comprising: an image display device for displaying an image, and an ocular optical system for forming an exit pupil to lead said image into an observer\s eyeball, wherein said ocular optical system includes a prism having a predetermined surface having both reflecting and transmitting functions and being provided at a tilt with respect to an optical axis of light emitted from said image display device, said prism having an aspherical surface on the side thereof which faces said image display device.