Helmet mounted display
First Claim
1. Head mounted display apparatus comprising:
- a surface mounted on an observer and having an at least partially reflecting portion in the view of the observer; and
an optical projector for projecting an image for refection from the at least partially reflecting portion including;
a display source whereon an image is formed; and
an optical system for focusing the image at separate sagittal and tangential foci between the display source and the at least partially reflecting portion,wherein the at least partially reflecting portion has a substantially spherical shape, the image is reflected thereafrom at an angle to the radius thereof and the sagittal and tangential foci of the spherical surface correspond, respectively, to the sagittal and tangential foci of the image.
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0 Petitions
Accused Products
Abstract
A display, for example, for a visor attached to a helmet, the visor having a partially reflecting semi-transparent portion in the view of the wearer and an optical projector for projecting an image onto the semi-transparent portion for reflection therefrom. The semi-transparent portion has a relatively higher reflectivity in a central area thereof and a relatively lower reflectivity in an annular area outside the central area. In one aspect of the invention, the head mounted display includes a projector having a display source whereon an image is formed and an optical system for focusing the image at separate sagittal and tangential foci between the image-forming surface and the semi-transparent portion.
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Citations
22 Claims
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1. Head mounted display apparatus comprising:
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a surface mounted on an observer and having an at least partially reflecting portion in the view of the observer; and an optical projector for projecting an image for refection from the at least partially reflecting portion including; a display source whereon an image is formed; and an optical system for focusing the image at separate sagittal and tangential foci between the display source and the at least partially reflecting portion, wherein the at least partially reflecting portion has a substantially spherical shape, the image is reflected thereafrom at an angle to the radius thereof and the sagittal and tangential foci of the spherical surface correspond, respectively, to the sagittal and tangential foci of the image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21, 22)
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13. Head mounted display apparatus comprising:
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a surface mounted on an observer and having an at least partially reflecting portion in the view of the observer; and an optical projector for projecting an image for the reflection from the at least partially reflecting portion including; a display source whereon an image is formed; and an optical system for focusing the image on separate sagittal and tangential focal surfaces between the display source and the at least partially reflecting portion, wherein the sagittal and tangential focal surfaces of the focused image do not have a common point and wherein the at least partially reflecting portion has a spherical shape, the image is reflected therefrom at an angle to the radius thereof and the sagittal and tangential foci of the spherical surface substantially coincide, respectively, with the sagittal and tangential foci of the image. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification