Image display unit and projection optical system
First Claim
1. An image display device comprising:
- an optoelectric element of emitting light in a two-dimensional way that has a display surface orthogonal to a direction of emitted light flux; and
a fisheye-type optical system that projects light flux emitted from the optoelectric element inside at least one of eyeballs of a user and has an viewing angle of 60 degrees and over, wherein the image display device is worn in front of the eyeball, wherein the fisheye-type optical system forms an intermediate image, wherein a closest optical element of optical elements arranged toward the eyeball from an position of forming the intermediate image to the eyeball is an aspherical optical element of a single lens element, wherein a far surface shape of the optical element from the eyeball has a aspherical shape of a surface such that light flux entering a pupil of the eyeball enters a far surface of the optical element from the eyeball approximately at right angles and, wherein a Conic coefficient of the Conic surface is less than −
1.
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Accused Products
Abstract
An intermediate image of an image from the LCD module 142 is deflected by reflection mirrors M1 and M2 via zoom automatic focus control system (g) and then is formed on diffusion glass 131 via relay lens (b) and reflection mirrors M3 and M4. The LCD image is projected on the retina of eyeballs via eyepiece lens 132 by the light flux diffused at an order of ±20 degrees by diffusion glass 131. One side of the eyepiece lens 132 close to the crystal balls 2 has an aspherical shape of a Conic surface and a Conic coefficient of the Conic surface is −1 and less. Thereby the optical system that has a viewing angle of 60 degrees and over and has a small aberration can be obtained.
62 Citations
40 Claims
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1. An image display device comprising:
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an optoelectric element of emitting light in a two-dimensional way that has a display surface orthogonal to a direction of emitted light flux; and
a fisheye-type optical system that projects light flux emitted from the optoelectric element inside at least one of eyeballs of a user and has an viewing angle of 60 degrees and over, wherein the image display device is worn in front of the eyeball, wherein the fisheye-type optical system forms an intermediate image, wherein a closest optical element of optical elements arranged toward the eyeball from an position of forming the intermediate image to the eyeball is an aspherical optical element of a single lens element, wherein a far surface shape of the optical element from the eyeball has a aspherical shape of a surface such that light flux entering a pupil of the eyeball enters a far surface of the optical element from the eyeball approximately at right angles and, wherein a Conic coefficient of the Conic surface is less than −
1. - View Dependent Claims (2, 3, 4, 5, 40)
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6-39. -39. (canceled)
Specification