High efficiency motion blur reduction
AssigneeThe Boeing Company
InventorsHarold R. STREID, Carl J. VORST
Life of this patent
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Abstract
A video projector, a shutter mechanism for a video projector, and a method for reducing image blur. A shutter can include regions that are 100% transmissive to light and regions that are more than 0% transmissive (but less than 100% transmissive). The more than 0% transmissive regions raise the perceived brightness of the image relative to a shutter with 0% transmissive regions, enabling the 100% transmissive regions to be smaller. The smaller 100% transmissive regions result in reduced image blur. The more than 0% transmissive regions can include a filter that filters out certain portions of the electromagnetic spectrum of the image to provide a perceived corrected image.
Claims20
A video projector, comprising:
- a light source;
- an imaging circuit arranged in a path of light from the light source;
- and
- a shutter arranged relative to the path of light, wherein the shutter includes a first region and a second region, wherein the second region is partially transmissive, wherein the second region is less transmissive than the first region, and wherein the shutter is operated to sequentially position the first region and then the second region in the path of light.
A shutter for a video projector, comprising:
- a rotatable disk, wherein the rotatable disk comprises a plurality of first regions and a plurality of second regions, wherein the plurality of first regions are spaced around the rotatable disk, wherein a second region of the plurality of second regions is arranged between adjacent first regions, wherein the second regions are partially transmissive, wherein the first regions are more transmissive than the second regions.
A method for projecting a video image, comprising:
- providing a digital video image that includes a sequence of digital images, wherein each digital image of the sequence of images is displayed for a predefined interval of time, and wherein the digital video image defines a brightness level;
- for a first portion of each respective predefined time interval for each digital video image, transmitting 100% of the brightness level of the digital video image for projection;
- and
- during a remaining portion of each respective predefined time interval, transmitting less than 100% and more than 0% of the brightness level of the digital video image.
Dependencies are inferred from the claim text.