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US 8,803,071 B2Granted
Housing for an optical sensor with micro-windows and a light valve to prevent reflected light from escaping
AssigneeNokia Corporation
InventorsRalf Wieser, Somakanthan Somalingam, Max Lindfors
Life of this patent
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Abstract
An apparatus including a housing defining at least one interior cavity; at least one optical sensor located within the at least one interior cavity of the housing adjacent a first portion of the housing; wherein the first portion of the housing includes a plurality of distributed optical windows through the housing. A housing part of an apparatus including a housing wall comprising a plurality of distributed micro-windows through the housing wall.
Claims19
An apparatus comprising:
- a housing defining at least one interior cavity;
- at least one optical sensor located within the at least one interior cavity of the housing adjacent a first portion of the housing;
- and
- a light valve comprising a plane polariser and a ¼ wavelength plate;
- wherein the first portion of the housing comprises a plurality of distributed optical windows through the housing, and
- wherein the light valve is positioned between the optical windows and the optical sensor such that the light valve allows light to enter the cavity through the light valve but it does not allow that light after reflection off the optical sensor to return through the light valve.
3 more elements
A housing part of an apparatus comprising:
- a housing wall comprising a plurality of distributed micro-windows through the housing wall;
- an optical sensor;
- and
- a light valve comprising a plane polarizer and a ¼ wavelength plate,
- wherein the light valve is positioned between the plurality of micro-windows and the optical sensor such that the light valve allows light to enter the housing through the light valve but it does not allow that light after reflection off the optical sensor to return through the light valve.
2 more elements
Dependencies are inferred from the claim text.