Systems and methods for handheld projection displays
AssigneePhotonEdge Inc.
InventorSong Peng
Life of this patent
Estimating the term…
Abstract
Systems and methods are described employing a first lens array and a second lens array that are separated by one focal length that receives a plurality of colors signals from an X-prism and transmits to a condenser for overlapping lenslet images onto a display panel, such as a LCOS or LCD display panel. The first lens array includes a plurality of lenslets where each lenslet in the first lens array corresponds with each lenslet in a plurality of lenslets in the second lens array. The lenslets can be either refractive, defractive, or a combination of refractive and defractive.
Claims35
A handheld display system, comprising:
- one or more light sources for generating one or more color light signals;
- a first lens array having a plurality of lenslets;
- a second lens arrays having a plurality of lenslets, the second lens array spaced apart from the first lens array by one focal length between the plurality of lenslets of the second lens array and the plurality of lenslets of the first lens array;
- and
- a display panel for spatially modulating the one or more color light signals to a projection lens that projects an image onto a screen;
- wherein each lenslet in the first and second lens arrays comprises a width that is equal to a width of the display panel multiply by a focal length of the lenslet divided by a focal length of the condenser, and each lenslet in the first and second arrays comprises a height that is equal to a height of the display panel multiply by the focal length of the lenslet divided by the focal length of the condenser.
A method for generating a handheld projection display, comprising:
- emitting one or more color light signals from one or more light sources;
- collimating the one or more color light signals with an X-prism by reflecting a first color light signal, transmitting a second color signal, and reflecting a third color signal;
- corresponding each one of a plurality of lenslets in a second lens array with each one of a plurality of lenslets in a first lens array toward infinity, the second lens array spaced apart from the first lens array by one focal length between the plurality of lenslets of the second lens array and the plurality of lenslets of the first lens array, each lenslet in the first and second lens arrays having a width that is equal to a width of the display panel multiply by a focal length of the lenslet divided by a focal length of the condenser, each lenslet in the first and second arrays having a height that is equal to a height of the display panel multiply by the focal length of the lenslet divided by the focal length of the condenser;
- and
- projecting images from a display panel onto a screen.
A handheld display system, comprising:
- one or more light sources for generating a first color signal, a second color signal, and a third color signal;
- a first lens array having a plurality of lenslets;
- an X-prism color combiner, positioned between one or more light sources and the first lens array, having a high-pass filter and a low-pass filter, the X-prism transmitting the second color light signal to the first lens array, and reflecting the third color light signal to the first lens array;
- a second lens arrays having a plurality of lenslets, the second lens array spaced apart from the first lens array by one focal length between the plurality of lenslets of the second lens array and the plurality of lenslets of the first lens array;
- and
- a display panel for spatially modulating the one or more color light signals to a projection lens that projects an image onto a screen.
Dependencies are inferred from the claim text.