Patent ID: 8982265
Filing Date: 2015-03-17
Classification: G03B,H04N

Abstract:
1. An image projection and capture apparatus for projecting an image beam to display an image on a screen and sensing a sensing beam from the image on the screen, comprising: a light source, capable of providing an illumination beam; a light valve, disposed on a light path of the illumination beam and capable of converting the illumination beam to the image beam; a projection lens and an image capture lens, wherein the projection lens is disposed on a light path of the image beam and has a first optical axis and the image capture lens has a second optical axis; a dichroic unit, disposed on the light path of the image beam; and an image sensor, disposed on a light path of the sensing beam, wherein the light valve has a first active surface perpendicular to the first optical axis, the first active surface is rectangular, the first active surface has two first long edges and two first short edges, one of the two first short edges has a first width D along a first direction perpendicular to the first optical axis, one of the two long edges has a first length E along a second direction perpendicular to the first direction and the first optical axis, a distance F exists between the first optical axis and one of the two first long edges closer to the first optical axis, the light valve has a first aspect ratio AR wherein the image sensor has a second active surface perpendicular to the second optical axis, the second active surface is rectangular and has two second long edges and two second short edges, one of the two second short edges has a second width A along a third direction perpendicular to the second optical axis, one of the second long edges has a second length B along a fourth direction perpendicular to the third direction and the second optical axis, a distance C exists between the second optical axis and one of the two second long edges closer to the second optical axis, the image sensor has a second aspect ratio AR