Polarization compensated stereoscopic systems

摘要

Disclosed embodiments include stereoscopic systems having at least one compensator operable to reduce the sensitivity of polarization control over incidence angle of image source optics and analyzer optics. In an exemplary embodiment, the disclosed compensator is operable to compensate polarization changes induced by optics at either or both the image source subsystem and the analyzer subsystem, in which the polarization changes would be operable to cause leakage at the analyzer subsystem if uncompensated. As such, the disclosed compensators and compensation techniques are operable to reduce leakage at the analyzer subsystem even if the disclosed compensator may be located at the analyzer subsystem.

主权项

1. A stereoscopic imaging system, comprising:
an image source subsystem operable to output light of first and second states of polarization (SOP); an analyzer subsystem operable to substantially block light of the first SOP from traveling along a first path, and to substantially block light of the second SOP from traveling along a second path; wherein the image source subsystem comprises a first optical element operable to cause a first polarization change on light passing therethrough, and the analyzer subsystem comprises a second optical element operable to cause a second polarization change on light passing therethrough, further wherein the first optical element comprises a polarizer and a quarter wave retarder, both of which optically follow an image source of the image source subsystem, further wherein the second optical element comprises a polarizer and a quarter wave retarder in the analyzer subsystem; wherein the first and second polarization changes, if not compensated, would at least partially cause at least one of a leakage of light of the first SOP along the first path or a leakage of light of the second SOP along the second path; and wherein the image source subsystem or the analyzer subsystem comprises a compensator configured to at least reduce both the first and second polarization changes.