초록 ▼

A visual display apparatus which enables the view angle for observation to be changed between two different levels with a simple arrangement by the observer\s intention or according to the kind of image reproduced. The visual display apparatus has a device (5) for displaying an image, a relay optica

A visual display apparatus which enables the view angle for observation to be changed between two different levels with a simple arrangement by the observer\s intention or according to the kind of image reproduced. The visual display apparatus has a device (5) for displaying an image, a relay optical system (4) for projecting the image displayed on the image display device (5) to form a first image, and an ocular optical system (2) for projecting the first image in an observer\s eyeball. The relay optical system (4) has an optical system (42) which is movable along an optical axis and enables a magnification to be changed between two different levels by moving the movable optical system (42) along the optical axis. When one of magnifications of the movable optical system (42) is assumed to be bb

대표청구항 ▼

A visual display apparatus having a device for displaying an image; a relay optical system for projecting the image displayed by said image display device to form a first image; and an ocular optical system for projecting said first image in an observer\s eyeball, wherein said relay optical system h

A visual display apparatus having a device for displaying an image; a relay optical system for projecting the image displayed by said image display device to form a first image; and an ocular optical system for projecting said first image in an observer\s eyeball, wherein said relay optical system has an optical system which is movable along an optical axis and enables a magnification to be changed between two different levels with an image position fixed by moving said movable optical system, wherein when one of said two different levels of magnification is assumed to be b1/b; and wherein said relay optical system has an optical member of positive power which satisfies the following condition: 1.1 where R is a ratio of two magnifications which are changeable from one to the other by movement of said relay optical system; R=b1/b2, where b1 is a higher magnification and b2 is a lower magnification.