Stereoscopic glasses using dichroic and absorptive layers

摘要

Filter glasses for use with a stereoscopic digital display system that displays stereoscopic images including left-eye images and right-eye images. The left-eye images are formed with light in a plurality of left-eye spectral bands, and the right-eye images are formed with light in a corresponding plurality of spectrally-adjacent right-eye spectral bands. The filter glasses include a left-eye filter and a right-eye filter, each of which includes a dichroic filter stack and one or more absorptive filter layers. Each of the filters transmits 50% or more of the light in the corresponding eye spectra bands, while providing less than 5% crosstalk. A frame is used to position the right-eye filter in front of an observer's right eye and to position the left-eye filter in front of the observer's left eye.

主权项

1. Filter glasses for use with a stereoscopic display system that outputs, toward a display surface, stereoscopic images including left-eye images from left-eye emitters and right-eye ages from right-eye emitters, the filter glasses comprising:
a frame with an outer end and an inner end, the outer end being positionable closer to the display surface than the inner end, the inner end being positionable closer to eyes of a filter glasses wearer than the outer end, the frame comprising:
a left-eye filter including a left-eye dichroic filter stack and a left-eye absorptive filter layer positioned at the outer end or closer to the outer end than the left-eye dichroic filter stack, the left-eye dichroic filter stack being positioned closer to the inner end than the left-eye absorptive filter layer and configured to transmit 60% or more of light from the left-eye light emitters and reflect 60% or more of the light from the right-eye light emitters, the left-eye absorptive filter layer being configured to transmit a larger percentage of the light from the left-eye light emitters than the light from the right-eye light emitters; anda right-eye filter including a right-eye dichroic filter stack and a right-eye absorptive filter layer positioned at the outer end or closer to the outer end than the right-eye dichroic filter stack, the right-eye dichroic filter stack being positioned closer to the inner end than the right-eye absorptive filter layer and configured to transmit 60% or more of the light from the right-eye light emitters and reflect 60% or more of the light from the left-eye light emitters, the right-eye absorptive filter layer being configured to transmit a larger percentage of the light from the right-eye light emitters than the light from the left-eye light emitters, wherein the right-eye absorptive filter layer and the left-eye absorptive filter layer are configured to absorb unwanted light from the display surface before the unwanted light can be received by the right-eye dichroic filter stack and the left-eye dichroic filter stack to prevent the right-eye dichroic filter stack and the left-eye dichroic filter stack from reflecting the unwanted light toward the display surface.