Method and system for real time correction of an image
First Claim
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1. A system for real time correction of light output and/or colour of an image displayed on a display device, the system comprising:
- a display device comprising an active display area for displaying the image, an image forming device and an electronic driving system for driving the image forming device, an optical sensor unit comprising an optical aperture and a light sensor, to make optical measurements on a light output from a representative part of the active display area of the image forming device and generating optical measurement signals therefrom, a feedback system receiving the optical measurement signals and on the basis thereof controlling the electronic driving system, wherein, from a standpoint of a user viewing the image on the active display area, the optical aperture is located in the active display area and the light sensor is located outside the active display area.
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Abstract
The present invention relates to a system and method for real time correction of light output and/or colour of an image displayed on a display device. The system comprises:
- a display device (1) comprising an active display area (6) for displaying the image, an image forming device (2) and an electronic driving system (4) for driving the image forming device (2),
- an optical sensor unit (10) comprising an optical aperture (21) and a light sensor (22) having an optical axis, to make optical measurements on a light output from a representative part of the active display area (6) of the image forming device (2) and generating optical measurement signals (11) therefrom,
- a feedback system (12) receiving the optical measurement signals (11) and on the basis thereof controlling the electronic driving system (4).
The optical aperture (21) of the optical sensor unit (10) has an acceptance angle such that at least 50%, alternatively 60%, alternatively 70%, alternatively 75% of the light received by the sensor (22) comes from light travelling within 15° of the optical axis of the light sensor (22).
65 Citations
18 Claims
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1. A system for real time correction of light output and/or colour of an image displayed on a display device, the system comprising:
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a display device comprising an active display area for displaying the image, an image forming device and an electronic driving system for driving the image forming device, an optical sensor unit comprising an optical aperture and a light sensor, to make optical measurements on a light output from a representative part of the active display area of the image forming device and generating optical measurement signals therefrom, a feedback system receiving the optical measurement signals and on the basis thereof controlling the electronic driving system, wherein, from a standpoint of a user viewing the image on the active display area, the optical aperture is located in the active display area and the light sensor is located outside the active display area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for real time correction of light output and/or colour of an image displayed on an image device, comprising:
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displaying the image on an active display area on the display device, making optical measurements on light emitted from a representative part of the active display area and generating optical measurement signals therefrom, controlling the display of the image on the active display area in accordance with optical measurement signals, wherein the step of making optical measurements comprises, from a standpoint of a user viewing the image on the active display area, guiding light from a location in the active display area to a location outside the active display area.
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Specification