Light control in head mounted displays
First Claim
1. A see-through head mounted display apparatus with reduced eyeglow, comprising:
- a see-through display assembly including an image source and a partially reflecting mirror that reflects and transmits respective portions of image light from the image source and scene light from a see-through view of an external environment, so that a combined image comprised of portions of the reflected image light and the transmitted scene light is provided to a user'"'"'s eye; and
a light control element that blocks escaping light comprised of the transmitted portion of image light and the reflected portion of scene light, while permitting a portion of incoming scene light to be transmitted from the external environment to the see-through display assembly, wherein the transmitted percentage of incoming scene light is greater than the percentage of escaping light that is not blocked.
3 Assignments
0 Petitions
Accused Products
Abstract
A see-through head mounted display apparatus with reduced eyeglow is disclosed. Two images of a scene are combined and presented to a user, the combined image including portions of reflected image light and light from a see-through view of an external environment. The apparatus includes a light control element to block escaping portions of image light and reflected portions of scene light, while allowing incoming scene light to be transmitted from the external environment. The images are produced using a partially reflecting mirror and a light control element. A portion of scene light is transmitted through the partially reflecting mirror and is combined with a portion of image light reflected from the partially reflecting mirror. A light control element is used to block a portion of the image light and a portion of the scene light to reduce eyeglow.
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Citations
36 Claims
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1. A see-through head mounted display apparatus with reduced eyeglow, comprising:
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a see-through display assembly including an image source and a partially reflecting mirror that reflects and transmits respective portions of image light from the image source and scene light from a see-through view of an external environment, so that a combined image comprised of portions of the reflected image light and the transmitted scene light is provided to a user'"'"'s eye; and a light control element that blocks escaping light comprised of the transmitted portion of image light and the reflected portion of scene light, while permitting a portion of incoming scene light to be transmitted from the external environment to the see-through display assembly, wherein the transmitted percentage of incoming scene light is greater than the percentage of escaping light that is not blocked. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for viewing an image with reduced eyeglow on a see-through head mounted display having a front and back, the method comprising:
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providing image light to a partially reflecting mirror from an image displayed on an image source; reflecting a first portion of the image light from the partially reflecting mirror while transmitting a second portion of the image light through the partially reflecting mirror; transmitting a first portion of scene light from an external environment through a light control element at the front of the see-through head mounted display; transmitting a second portion of the scene light through the partially reflecting mirror while reflecting a third portion of the scene light from the partially reflecting mirror; combining the first portion of the image light with the second portion of the scene light to provide a combined image to a viewer'"'"'s eye at the back of the see-through head mounted display comprised of the image displayed on the image source overlaid on a view of the external environment; and using the light control element to block the transmitted second portion of the image light and the reflected third portion of the scene light to reduce eyeglow. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification