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US 6,631,993 B2Granted
Display system
AssigneeTexas Instruments Incorporated
InventorRaymond G. Fielding
Life of this patent
Estimating the term…
Abstract
A projecting display system includes a light source (101) which produces light which is spatially modulated by a number of spatial light modulators (105, 107). A splitting means (103) is provided in the light path between the light source (101) and the spatial light modulators (105 and 107) such that the overall luminous flux produceable by the system is not determined by the maximum luminous flux which each spatial light modulators (105, 107) can accommodate.
Claims10
A display system comprising:
- a light source;
- at least two deflectable mirror devices, each device having a plane defined by an array of mirror elements, each mirror element corresponding to a respective pixel of an image to be displayed and being deflectable between a first orientation relative to said plane of the array effective to reflect light incident on the mirror element at a predetermined angle not normal to the plane of the array along an “ON” path for the device and a second orientation relative to said plane of the array effective to reflect light incident on the mirror element at said predetermined angle along an “OFF” path for the device;
- control means for supplying address signals to each device effective to control the orientation of mirror elements of each device between said first and second orientations dependent on the image to be displayed, corresponding mirror elements in each array being controlled by the same address signals;
- means for splitting light within the same wavelength band from the light source between said deflectable mirror devices and directing the split light onto the mirror elements of each array at said predetermined angle for each array;
- and
- means for combining the light reflected by the deflectable mirror arrays along the respective “ON” paths for the arrays to form a single spatially modulated light beam.
3 more elements
A display system comprising:
- at least two deflectable mirror devices, each device having a plane defined by an array of mirror elements, each mirror element corresponding to a respective pixel of an image to be displayed and being deflectable between a first orientation effective to reflect light incident on the mirror element along an “ON” path and a second orientation effective to reflect light incident on the mirror element along an “OFF” path;
- control circuitry for supplying address signals to each device effective to control the orientation of mirror elements of each array between said first and second orientations dependent on the image to be displayed;
- a beam splitter effective to split light between said deflectable mirror devices and to direct the split light onto the mirror elements of each array at said predetermined angle for each array;
- and
- a beam combiner effective to combine the light reflected by the mirror arrays along the respective “ON” paths for the arrays to form a single spatially modulated light beam.
2 more elements
A display system comprising:
- a plurality of deflectable mirror devices, each device having a plane defined by an array of mirror elements, each mirror element corresponding to a respective pixel element of a color wavelength band component of a color image to be displayed and being deflectable between a first orientation relative to said plane of the array effective to reflect light incident on the mirror element at an angle not normal to the plane of the array along an “ON” path for the device and a second orientation relative to said plane of the array effective to reflect light incident on the mirror element at said predetermined angle along an “OFF” path for the device;
- a light direction system for directing light of different wavelength band components onto different ones of said deflectable mirror devices, wherein at least two deflectable mirror devices have light within the same wavelength band directed onto them;
- control circuitry for supplying address signals to each device representative of a wavelength band component of said color image and effective to control the orientation of mirror elements of each array between the first and second orientations dependent on the color image, the control circuitry being arranged to supply control signals corresponding to the wavelength band component of the color image;
- and
- an optical combiner for combining the light reflected by all of the deflectable mirror devices along the respective “ON” paths for the devices to form a single spatially modulated light beam.
2 more elements
Dependencies are inferred from the claim text.