Sony Video Projector VPL-VW90ES - Manual (Page 41)

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3D glasses communication range
Figures A and B below indicate the communication range of the 3D glasses. If you try to
watch 3D video images from a distance greater than the communication range or install
the projector outside the communication range, the 3D glasses may not be able to display
the images properly. Also, the viable angles and distance vary depending on the screen
type, environment of the room, and installation environment of the projector.
Figure A: 3D glasses communication range (distance from the screen)
Figure B:3D sync signal communication distance between the projector
and screen
Screen
Approx. 5 m (Maximum)
3D glasses
Top or side view
Screen
Approx. 5 m (Maximum)
Projector
Side view