Volumetric 3D display
A drive system for a projection screen in a swept surface volumetric 3D display is disclosed. The drive system causes the projection screen to reciprocate through an excursion distance at a screen reciprocating frequency relative to a projection system. The drive system includes an actuator arrangement for generating an input reciprocating force substantially at the screen reciprocating frequency through an input excursion distance and a support structure for the projection screen. The support structure includes a resonant mounting arrangement for the projection screen. The resonant mounting arrangement is operably connected to the actuator arrangement and configured to allow the projection screen to reciprocate through the excursion distance. The resonant mounting arrangement is configured to have a resonant frequency substantially equivalent to the screen reciprocating frequency on actuation of the actuator arrangement. A gaming console incorporating a swept surface volumetric 3D display based on the drive system is also disclosed.
1. A drive system for a projection screen in a swept surface volumetric three dimensional (3D) display, the drive system operable to cause the projection screen to reciprocate through an excursion distance, at a screen reciprocating frequency, relative to a projection system, the drive system including:
an actuator arrangement for generating an input reciprocating force substantially at the screen reciprocating frequency through an input excursion distance; and
a support structure for the projection screen, the support structure including a resonant mounting arrangement for the projection screen, the resonant mounting arrangement operably connected to the actuator arrangement and configured to allow the projection screen to reciprocate through the excursion distance, wherein the resonant mounting arrangement is configured to have a resonant frequency substantially equivalent to the screen reciprocating frequency on actuation of the actuator arrangement.
2. The drive system of claim 1 , wherein the support structure for the projection screen includes a first support component for supporting the projection screen and a second support component to mount the resonant mounting arrangement to for attachment to the first support component.
3. The drive system of claim 2 , wherein the second support component is directly connected to the actuator arrangement to in turn drive the resonant mounting arrangement to drive the first support component and the projection screen to reciprocate at the screen reciprocating frequency.
4. The drive system of claim 3 , where the actuator arrangement includes a single actuator and wherein the second support component is connected to the single actuator.
5. The drive system of claim 3 , wherein the actuator arrangement includes multiple actuators and wherein the second support component is connected to the multiple actuators.
6. The drive system of claim 2 , wherein the second support component includes a frame member that substantially surrounds the first support component, and wherein the resonant support arrangement includes one or more resilient members mounted to and extending from the frame member and attached to the first support component.
7. The drive system of claim 2 , wherein the first and second support components are in a stacked configuration, and wherein the resonant support arrangement includes one or more resilient members mounted to and extending from the second support component and attached to the first support component.
8. The drive system of claim 2 , wherein the second support component is stationary with respect to the actuator arrangement and the actuator arrangement directly drives the resonant mounting arrangement to drive the first support component and the projection screen to reciprocate at the screen reciprocating frequency.
9. The drive system of claim 8 , wherein the second support component includes a frame member that substantially surrounds the first support component, and wherein the resonant mounting arrangement includes one or more mounting members mounted to and extending from the frame member and attached to the first support component.
10. The drive system of claim 9 , wherein the one or more mounting members include a resilient portion.
11. The drive system of claim 10 , wherein the one or more mounting members further includes a non-extendible portion, and wherein the actuator arrangement directly drives the non-extendible portion with respect to the second support component to in turn drive the resilient portion.
12. The drive system of claim 9 , wherein the actuator arrangement includes a plurality of actuators each driving a respective mounting member.
13. The drive system of claim 1 , wherein a magnification factor defined by a ratio of the excursion distance of the projection screen to the input excursion distance of the actuator arrangement is greater than or equal to 10.
14. The drive system of claim 13 , wherein the magnification factor is greater than or equal to 15.
15. The drive system of claim 13 , wherein the magnification factor is greater than or equal to 20.
16. The drive system of claim 1 , wherein the reciprocation frequency of the projection screen is about 20 Hz.
17. The drive system of claim 1 , wherein the resonant mounting arrangement is tunable to vary the resonance frequency.
18. The drive system of claim 1 , wherein the actuator arrangement is based on one or more linear actuators.
19. The drive system of claim 1 , wherein the one or more linear actuators are one or more electromagnetic coils.
20. The drive system of claim 19 , wherein the one or more electromagnetic coils are subwoofers.
21. The drive system of claim 19 , wherein the one or more electromagnetic coils are bass shakers.
22. A gaming console incorporating the swept surface volumetric 3D display of claim 21 .
23. A swept surface volumetric 3D display incorporating a drive system according to claim 1 .