Variable optical arrays and variable manufacturing methods
View Patent ↗The invention divides the lens focusing process into two or more surfaces that incorporate multiple curved axial optic elements on each surface. The axial optics may be manufactured by molding, machining, or by suspended film. If suspended film is used, then both sides of an optic may have a suspended film that is transparent. Alternatively, one side of the suspended film optic may use a reflective film.
1. An optical system comprising:
a first array of independent axial optical elements having a first longitudinal axis; and
a second array of independent axial optical elements having a second longitudinal axis in electromagnetic communication with said first array of independent axial optical elements and relatively disposed such that said first and said second longitudinal axes are skew and such that multiple focal points are created for incoming parallel light;
wherein said first array comprises two films separated by fill material, and said second array comprises two films separated by fill material.
2. An optical system according to claim 1 , wherein said first array of independent axial optical elements may have a profile selected from the following group:
sinusoidal; curved; baffled; flat, apex-forming; and non-uniform curved.
3. An optical system according to claim 1 , wherein said second array of independent axial optical elements may have a profile selected from the following group:
sinusoidal; curved; baffled; flat, apex-forming; and non-uniform curved.
4. An optical system according to claim 1 , wherein said first and said second optical arrays form a screen having a vertical fall-off intensity of less than 2% of peak energy per degree within the design viewer volume.
5. An optical system according to claim 4 , wherein at the designed vertical angular cut-off point, the reflected light intensity falls off at the rate of between 20% and 50% per degree.
6. An optical system according to claim 1 , wherein said first and said second optical arrays form a screen, and further comprising:
a plurality of vertical striation scattering profiles disposed on the surface of said screen.
7. An optical system according to claim 1 , wherein said two films of said first array consists of a transparent film and a reflective film, and said two films of said second array consists of a transparent film and a reflective film.
8. An optical system according to claim 1 , wherein said two films of said first array consists of two transparent films, and said two films of said second array consists of two transparent films.
9. An optical system comprising:
a first array of independent axial optical elements having a first longitudinal axis; and
a second array of independent axial optical elements having a second longitudinal axis in electromagnetic communication with said first array of independent axial optical elements and relatively disposed such that said first and said second longitudinal axes are skew and such that multiple focal points arc created for incoming parallel light;
wherein said first and said second optical arrays form a screen having a plurality of cells, wherein the cellular (screen pixel) level of cross-talk experienced by the adjoining cells of said screen along the vertical and horizontal axes is between less than 1% and 5%, using screen-cell height/width ronchi rulings to independently measure vertical and horizontal cross-talk of individual cells based upon no less than a 100 screen pixel by 100 screen pixel contiguous area.
10. An optical system comprising:
a first array of independent axial optical elements having a first longitudinal axis; and
a second array of independent axial optical elements having a second longitudinal axis in electromagnetic communication with said first array of independent axial optical elements and relatively disposed such that said first and said second longitudinal axes are skew and such that multiple focal points are created for incoming parallel light;
wherein said first and said second optical arrays form a screen having a plurality of cells, wherein the modulation transfer of said screen is greater than 90% using ronchi-ruled images when the projected bar width equals the screen cell width, determined using a 100-pixel by 100-pixel sampling window with a 20-pixel slide in both horizontal and vertical directions over the entirety of the screen.
11. An optical system comprising:
a screen comprising a first array of independent axial optical elements having a first longitudinal axis, and a second array of independent axial optical elements having a second longitudinal axis joined to said first array such that said first and said second longitudinal axes are skew;
wherein said screen has a vertical fall-off intensity of less than 2% of peak energy per degree within the design viewer volume; and
wherein said first array comprises transparent film and reflective film separated by fill material, and said second array comprises transparent film and reflective film separated by fill material.
12. An optical system according to claim 11 , wherein said first array of independent axial optical elements may have a profile selected from the following group:
sinusoidal; curved; baffled; flat, apex-forming; and non-uniform curved.
13. An optical system according to claim 11 , wherein said second array of independent axial optical elements may have a profile selected from the following group:
sinusoidal; curved; baffled; flat, apex-forming; and non-uniform curved.
14. An optical system according to claim 11 , wherein at the designed vertical angular cut-off point, the intensity of light reflected from said screen falls offal the rate of between 20% and 50% per degree.
15. An optical system comprising:
a screen comprising a first array of independent axial optical elements having a first longitudinal axis, and a second array of independent axial optical elements having a second longitudinal axis joined to said first array such that said first and said second longitudinal axes are skew;
wherein at the designed vertical angular cut-off point of said screen, the intensity of light reflected from said screen falls off at the rate of between 10% and 50% per degree; and
wherein said first array comprises transparent film and reflective film separated by fill material, and said second array comprises transparent film and reflective film separated by fill material.
16. An optical system according to claim 15 , wherein said first array of independent axial optical elements may have a profile selected from the following group:
sinusoidal; curved; baffled; flat, apex-forming; and non-uniform curved.
17. optical system according to claim 15 , wherein said second array of independent axial optical elements may have a profile selected from the following group:
sinusoidal; curved; baffled; flat, apex-forming; and non-uniform curved.
18. An optical system according to claim 15 , wherein said screen has a vertical fall-off intensity of less than 2% of peak energy per degree within the design viewer volume.