Portable collapsible display and projection apparatus
First Claim
1. A collapsible display apparatus comprising:
- a base having first and second side walls mounted on opposite sides thereof;
a translucent planar viewing screen;
first linkage mechanisms pivotally coupled to each of said first and second side walls and pivotally coupled to each end of the bottom edge of said viewing screen;
second linkage mechanisms pivotally coupled to each of said side walls at a point displaced from each of said first linkage mechanisms;
a planar mirror member pivotally coupled to the top of said viewing screen and to each of said second linkage mechanisms with its reflective surface in facing relationship with the rear side of said screen;
said screen and said mirror member being angularly movable from a viewing position in which said screen is supported in an upright position above said base and said mirror is supported in an inclined position diverging downwardly from the top of said screen with its reflective surface facing the rear side of said screen, to a collapsed mode in which said screen is folded down over the top edges of said side walls and said mirror is folded down over the rear side of said screen with its reflective surface facing said screen and with its rear surface forming a protective cover for said screen.
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Accused Products
Abstract
A portable collapsible liquid crystal display apparatus which includes a base, and a relatively large viewing screen having a width corresponding substantially to the overall width of said base and which, together with a first planar member of the same size, are pivotally mounted on the base. When the apparatus is in its viewing mode, the screen is turned to an upright position on the base with the mirror in an inclined position extending downwardly behind the screen to reflect images over the entire rear surface of the screen. When the unit is in a collapsed mode, the screen is folded down over the base and the mirror is folded down on top of the screen with its reflective surface facing the screen and with its rear surface forming a protective cover for the screen. The linkage mechanism which couples the screen and mirror to the base includes relatively wide links which also serve to shield the rear surface of the screen from ambient light when the screen is in its upright viewing position. An appropriate optical system is mounted on the base, which includes a liquid crystal light valve, an appropriate light source, a fixed mirror, and a wide angle lens for projecting images from the light valve to the fixed mirror to be reflected through the first-named mirror to the rear surface of the screen.
34 Citations
9 Claims
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1. A collapsible display apparatus comprising:
- a base having first and second side walls mounted on opposite sides thereof;
a translucent planar viewing screen;
first linkage mechanisms pivotally coupled to each of said first and second side walls and pivotally coupled to each end of the bottom edge of said viewing screen;
second linkage mechanisms pivotally coupled to each of said side walls at a point displaced from each of said first linkage mechanisms;
a planar mirror member pivotally coupled to the top of said viewing screen and to each of said second linkage mechanisms with its reflective surface in facing relationship with the rear side of said screen;
said screen and said mirror member being angularly movable from a viewing position in which said screen is supported in an upright position above said base and said mirror is supported in an inclined position diverging downwardly from the top of said screen with its reflective surface facing the rear side of said screen, to a collapsed mode in which said screen is folded down over the top edges of said side walls and said mirror is folded down over the rear side of said screen with its reflective surface facing said screen and with its rear surface forming a protective cover for said screen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a base having first and second side walls mounted on opposite sides thereof;
Specification