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US 10,768,428 B2Granted
Screen for an HMD
AssigneeCarl Zeiss Meditec AG
InventorsStefan Saur, Marco Wilzbach, Christopher Käsbach
Life of this patent
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Abstract
A screen (3) for an HMD (1) is provided, and may be designed as a display screen or as a projection screen. The screen (3) comprises a layer (19) of a material with a switchable degree of transparency and at least one further switchable layer (17, 21, 23) which, in dependence on the switching state, can assume at least two physical states, the physical states differently influencing at least one optical property of light passing through the switchable layer or reflected by it.
Claims26
A screen for an HMD comprising:
- a first switchable layer of a material with a switchable degree of transparency;
- and
- at least one second switchable layer which, in dependence on a switching state, can assume at least two physical states, the at least two physical states differently influencing at least one optical property of light passing through the at least one second switchable layer or reflected by it,
- wherein the at least one optical property that is differently influenced by the at least two physical states of the at least one second switchable layer is a wavelength of the light, and the at least one second switchable layer at least partially blocks certain wavelengths of the light depending on the physical state of the at least two physical states.
1 more element
A screen for an HMD comprising:
- a first switchable layer of a material with a switchable degree of transparency;
- at least one second switchable layer which, in dependence on a switching state, can assume at least two physical states, the at least two physical states differently influencing at least one optical property of light passing through the at least one second switchable layer or reflected by it;
- and
- a third layer forming a transparent display,
- wherein the at least one second switchable layer comprises pixels and is switchable at a pixel level, and the transparent display comprises pixels, and each pixel of the at least one second switchable layer is assigned in position and size to a pixel of the transparent display, or a number of contiguous pixels of the transparent display.
2 more elements
Dependencies are inferred from the claim text.