Method and system for real time correction of an image

A system for real time correction of light output and/or colour of an image displayed on an LCD display device, the system comprising:

• an LCD display device comprising an active display area for displaying the image,
• an LCD panel, and an electronic driving system for driving the LCD panel,
• an optical sensor unit comprising an optical aperture and a light sensor having an optical axis, to make optical measurements on a light output from a representative part of the active display area of the LCD panel 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 the representative part of the active display area of the LCD display device is less than 1% of the area of the active display area of the LCD display device.

A method for real time correction of light output and/or colour of an image displayed on an LCD display device, comprising:

• displaying the image on an active display area on the LCD 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 the optical measurement signals,
• wherein the step of making optical measurements comprises collecting light on the representative part of the active display area, the representative part of the active display area being less than 1% of the area of the active display area of the LCD display device.