System and method for generating images
The disclosed embodiments relate to a system and method for generating images. There is provided a method comprising directing light through a projecting lens ( 28 ) at a first pixel position ( 60 a ) on a screen ( 32 ), and shifting the projecting lens ( 28 ) such that the light is directed on at a second pixel position ( 66 ) on the screen ( 32 ), wherein the second pixel position ( 66 ) is diagonally offset from the first pixel position ( 60 a ).
1. A method comprising:
directing light through a projecting lens ( 28 ) at a first pixel position ( 60 a ) on a screen ( 32 ); and
shifting the projecting lens ( 28 ) such that the light is directed at a second pixel position ( 66 ) on the screen ( 32 ), wherein the second pixel position ( 66 ) is diagonally offset from the first pixel position ( 60 a ).
2. The method of claim 1 , wherein shifting the projecting lens ( 28 ) comprises actuating an actuator ( 26 ).
3. The method of claim 1 , wherein shifting the projecting lens ( 28 ) comprises shifting the projecting lens ( 28 ) to direct light at a second pixel position ( 66 ) that is offset from the first pixel position by an offset angle ( 56 ) of approximately 63 degrees.
4. The method of claim 1 , wherein shifting the projecting lens ( 28 ) comprises shifting the projecting lens ( 28 ), such that the spacing between the first pixel position ( 60 a ) and the second pixel position ( 66 ) is approximately 1.7 times a pixel pitch of the first pixel.
5. The method of claim 1 , comprising shifting the projecting lens ( 28 ) to direct light a third pixel position ( 62 ), wherein the third pixel position ( 62 ) is diagonal offset from the first pixel position ( 60 a ).
6. The method of claim 5 , comprising shifting the projecting lens ( 28 ) to direct light at a fourth pixel position ( 64 ), wherein the fourth pixel position ( 64 ) is diagonally offset from the third pixel position ( 62 ).
7. The method of claim 6 , wherein shifting the projecting lens ( 28 ) to direct light at the fourth pixel position comprises shifting the light approximately 0.4 times a pitch of the first pixel.
8. An image display unit ( 10 ), comprising:
a digital micromirror device ( 18 ) configured to direct light through a projecting lens ( 28 ) at a first pixel position ( 60 a ) on a screen ( 32 ); and
a projecting lens assembly ( 30 ) configured to shift the projecting lens ( 28 ) such that the light is directed at a second pixel position ( 66 ) on the screen ( 32 ), wherein the second pixel position ( 66 ) is diagonally offset from the first pixel position ( 60 a ).
9. The image display unit ( 10 ) of claim 8 , wherein the projecting lens assembly comprises an actuator ( 26 ) configured to actuate the projecting lens assembly ( 30 ) to shift the projecting lens ( 28 ).
10. The image display unit ( 10 ) claim 8 , wherein the projecting lens assembly ( 30 ) is configured to shift the projecting lens ( 28 ) such that the second pixel position ( 66 ) is along a path ( 58 ) that intersects the first pixel position ( 60 a ) and the second pixel position ( 66 ) is diagonal from an orthogonal grid ( 52 ) by an offset angle ( 56 ).
11. The image display unit ( 10 ) of claim 8 , wherein the projecting lens assembly ( 30 ) is configured to shift pixel positions at an offset angle ( 56 ) of approximately 63 degrees.
12. The image display unit ( 10 ) of claim 8 , wherein the projecting lens assembly ( 30 ) is configured to shift pixel positions at a spacing between the first pixel position ( 60 a ) and the second pixel position ( 66 ), wherein the spacing is approximately 1.7 times the pixel pitch.
13. The image display unit ( 10 ) of claim 8 , wherein the projecting lens assembly ( 30 ) is configured to shift pixel positions at a spacing between the first pixel position ( 60 a ) and the second pixel position ( 66 ), wherein the spacing is approximately 0.4 times the pixel pitch.
14. The image display unit ( 10 ) of claim 8 , further comprising a processor ( 20 ) coupled to the digital micromirror device ( 18 ) and the projecting lens assembly ( 30 ), wherein the processor ( 20 ) is configured to interpret an incoming video format and to synchronize the digital micromirror device ( 18 ) and the projecting lens assembly ( 30 ) to display the incoming video format.
15. An image display unit ( 10 ), comprising:
means for directing light through a projecting lens ( 28 ) at a first pixel position ( 60 a ) on a screen ( 32 ); and
means for shifting the projecting lens ( 28 ) such that the light is directed on at a second pixel position ( 66 ) on the screen ( 32 ), wherein the second pixel position ( 66 ) is diagonally offset from the first pixel position ( 60 a ).
16. The image display unit ( 10 ) of claim 15 , wherein the means for shifting the projecting lens ( 28 ) comprises means for shifting the projecting lens ( 28 ) such that the second pixel position ( 66 ) is along a path ( 58 ) that intersects the first pixel position ( 60 a ) and that is diagonally offset from an orthogonal grid ( 52 ).
17. The image display unit ( 10 ) of claim 15 , wherein the means for shifting comprises means for shifting pixel positions on the screen ( 32 ) at an offset angle ( 56 ) of approximately 63 degrees.
18. The image display unit ( 10 ) of claim 15 , further comprising means for shifting pixel positions on the screen ( 32 ), wherein the spacing between the first pixel position ( 60 a ) and the second pixel position ( 66 ) is approximately 1.7 times a pixel pitch.
19. The image display unit ( 10 ) of claim 15 , further comprising means for shifting the projecting lens ( 28 ) to direct the light at a third pixel position ( 62 ), wherein the third pixel position ( 62 ) is diagonally offset from the first pixel position ( 60 a ).
20. The image display unit ( 10 ) of claim 15 , further comprising means for shifting the projecting lens ( 28 ) to direct the light at a fourth pixel position ( 64 ), wherein the fourth pixel position ( 64 ) is diagonally offset from the first pixel position ( 60 a ).