Stereoscopic projection system with multiple power groups
View Patent ↗Disclosed embodiments relate to a stereoscopic projection system and methods. An exemplary disclosed projection system includes an optical component disposed between the lenses of a lens arrangement. An exemplary lens arrangement includes a first power group, a second power group, and an aperture stop. In an embodiment, the optical component is disposed between the first power group and the aperture stop. In an exemplary embodiment, the optical component is proximate to the aperture stop. By disposing the optical component closer to or proximate to the aperture stop in the lens arrangement, various benefits may be realized, including improved contrast uniformity.
1. A projection system operable to provide stereoscopic images, comprising:
A display panel operable to output image light along a light path;
A projection lens arrangement comprising:
a first power group;
a second power group disposed between the first power group and the display panel; and
an aperture stop disposed between the first and second power groups;
wherein the first power group is operable to pass light towards a projection screen; and
an optical component disposed between the first power group and the second power group;
wherein the optical component comprises a polarization switch.
2. The projection system of claim 1 , wherein the optical component is disposed between the first power group and the aperture stop.
3. The projection system of claim 2 , further comprising a second optical component disposed between the second power group and the aperture stop.
4. The projection system of claim 1 , wherein the second power group further comprises a second lens disposed between the aperture stop and a first lens of the second power group, the projection system further comprising a second optical component disposed between the first and second lenses of the second power group.
5. The projection system of claim 1 , wherein the second power group further comprises a second lens disposed between the aperture stop and a first lens of the second power group, the projection system further comprising a second optical component between the second power group and the aperture stop.
6. The projection system of claim 5 , wherein the second optical component is adjacent to the aperture stop.
7. The projection system of claim 1 , wherein the first power group is a negative power group and the second power group is a positive power group.
8. The projection system of claim 1 , wherein the optical component comprises a modulator.
9. A projection system operable to provide stereoscopic images, comprising:
a display panel operable to output image light along a light path;
a projection lens arrangement disposed in the light path, the projection lens arrangement comprising:
a first power group;
a second power group disposed between the first power group and the display panel; and
an aperture stop disposed between the first and second power groups;
wherein the first power group is operable to pass light towards a projection screen;
an optical component, the optical component disposed in the light path between the first power group and the second power group;
wherein the optical component comprises a polarization switch; and
a projection screen operable to receive light provided by the projection lens arrangement along the light path.
10. The projection system of claim 9 , wherein the optical component is disposed between the first power group and the aperture stop.
11. The projection system of claim 9 , the system further comprising: a second display panel operable to output light along a second light path; a second projection lens arrangement disposed in the second light path, the second projection lens arrangement comprising: a first power group; a second power group disposed between the first power group and the display panel; and an aperture stop disposed between the first and second power groups of the second projection lens arrangement; a second optical component, the second optical component disposed in the second light path between a first lens of the first power group of the second projection lens arrangement and a second lens of the second power group of the second projection lens arrangement; wherein the projection screen is operable to receive light provided from the second projection lens arrangement along the second light path.
12. A method of projecting stereoscopic images on a screen, comprising:
providing a light display panel;
directing image light from the light display panel through a projection lens arrangement and an optical component; and
directing light exiting the projection lens arrangement to toward the screen;
wherein the projection lens arrangement comprises
a first power group;
a second power disposed between the first power group and the display panel; and
wherein the first power group is operable to pass light towards a projection screen;
an aperture stop disposed between the first and second power groups;
wherein the optical component comprises a polarization switch; and
wherein the optical component is disposed between the first power group and the second power group.
13. The projection system of claim 12 , wherein the optical component is disposed between the first power group and the aperture stop.