Head mount type image display system
First Claim
1. A head mount image display system comprising:
- a display device;
an eyepiece optical system which forms a virtual image of an image displayed on the display device, and which includes a reflection member which shifts an optical axis in the eyepiece optical system to direct the light to a user'"'"'s eye, wherein the reflection member comprises one of a total reflection mirror and a total reflection prism;
an eyepiece window through which the light for forming the virtual image is directed to the user'"'"'s eye from the reflection member;
an eyepiece window holder which holds the eyepiece window within a field of view of the user'"'"'s eye; and
a supporter which is adapted to be fitted onto the user'"'"'s head and which supports the eyepiece window holder, the eyepiece optical system, and the display device;
wherein the eyepiece window has a width of not more than 4 mm that is smaller than a pupil'"'"'s diameter projected in a visual axis direction of the user'"'"'s eye, when the supporter is fitted onto the user'"'"'s head and the eyepiece window is positioned within a field of view of the user'"'"'s eye;
wherein an exit pupil is positioned at least one of;
(i) in a vicinity of the eyepiece window, and (ii) between the eyepiece window and a pupil of the user'"'"'s eye; and
wherein the eyepiece window does not completely block substantially parallel light from outside the head mount image display system from entering the pupil of the user'"'"'s eye.
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Accused Products
Abstract
It is an object of the invention to provide a head mount type image display system that, albeit having a see-around and a see-through function, is small size and low weight, makes sure a large field of outside view and low power consumption with high-luminance electronic images, and is easy to use.
A head mount type image display system 1 at least comprises a display device, an eyepiece optical system, an eyepiece window, an eyepiece window holder 2, a casing and a supporter 10 for fixing all these components onto a user'"'"'s head. The casing covers the display device, the eyepiece window holder 2 holds the eyepiece window within a user'"'"'s field of view, the eyepiece optical system forms a virtual image of an image displayed on the display device, the eyepiece window allows a light beam for forming the virtual image to be directed to a user'"'"'s eye and leave it, and a member that forms the eyepiece window holder is such that, in a range of 10 mm or greater from the eyepiece window toward a base, a width of projection section in a user'"'"'s visual axis direction is 4 mm or less except some projection, and has a see-around mechanism.
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Citations
28 Claims
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1. A head mount image display system comprising:
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a display device; an eyepiece optical system which forms a virtual image of an image displayed on the display device, and which includes a reflection member which shifts an optical axis in the eyepiece optical system to direct the light to a user'"'"'s eye, wherein the reflection member comprises one of a total reflection mirror and a total reflection prism; an eyepiece window through which the light for forming the virtual image is directed to the user'"'"'s eye from the reflection member; an eyepiece window holder which holds the eyepiece window within a field of view of the user'"'"'s eye; and a supporter which is adapted to be fitted onto the user'"'"'s head and which supports the eyepiece window holder, the eyepiece optical system, and the display device; wherein the eyepiece window has a width of not more than 4 mm that is smaller than a pupil'"'"'s diameter projected in a visual axis direction of the user'"'"'s eye, when the supporter is fitted onto the user'"'"'s head and the eyepiece window is positioned within a field of view of the user'"'"'s eye; wherein an exit pupil is positioned at least one of;
(i) in a vicinity of the eyepiece window, and (ii) between the eyepiece window and a pupil of the user'"'"'s eye; andwherein the eyepiece window does not completely block substantially parallel light from outside the head mount image display system from entering the pupil of the user'"'"'s eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification