Method and apparatus for recording holographic stereograms elements using replacable elements
View Patent ↗Methods and devices are described for creating and printing holographic stereograms and holographic optical elements using computer rendered images or using computer processed images. Various embodiments of the system may utilize interchangeable band-limited diffusers and reference-beam masking plates.
1. An apparatus for printing holographic stereograms, comprising:
a light source configured to produce a coherent beam;
a beam splitter configured to split the coherent beam into an object beam and a reference beam;
a material holder configured to hold a holographic recording material;
an object beam unit comprising a first replaceable band-limited diffuser, wherein:
the object beam unit is configured to display a rendered image and to condition the object beam with the rendered image to interfere with the reference beam on the holographic recording material,
the first replaceable band-limited diffuser comprises a deterministic phase pattern designed to diffuse light in at least one of: a specific pattern or a specific direction, and
the first replaceable band-limited diffuser is designed for a wavelength corresponding to a wavelength of the coherent beam;
a first replaceable masking plate located in a path of the reference beam and proximate to the holographic recording material, wherein:
the first replaceable band-limited diffuser and the first replaceable masking plate form a first matched set, and
the first matched set is configured to allow exposure of a first elemental hologram of a first particular size on the holographic recording material;
a second replaceable band-limited diffuser;
a second replaceable masking plate, wherein:
each of the first replaceable band-limited diffuser and the first replaceable masking plate are located in respective positions such that the first replaceable band-limited diffuser can be replaced with the second replaceable band-limited diffuser and the first replaceable masking plate can be replaced with the second replaceable masking plate,
the second replaceable band-limited diffuser and the second replaceable masking plate form a second matched set, and
the second matched set is configured to allow exposure of a second elemental hologram on the holographic recording material, wherein the second elemental hologram is at least one of:
larger than the first elemental hologram,
smaller than the first elemental hologram, or
differently shaped than the first elemental hologram; and
a computer programmed to control the interference of the object beam and the reference beam and the delivery of the rendered image to the object beam unit.
2. An apparatus for printing holographic stereograms as in claim 1 , the first replaceable masking plate having at least one positioning adjustment device.
3. An apparatus for printing holographic stereograms, as in claim 1 , the first replaceable band-limited diffuser having at least one positioning adjustment device.
4. A method comprising:
splitting a coherent beam into an object beam and a reference beam;
displaying a rendered image;
conditioning the object beam with the rendered image;
transmitting at least a portion of the object beam through a first replaceable band-limited diffuser, wherein
the first replaceable band-limited diffuser comprises a deterministic phase pattern designed to diffuse light in at least one of: a specific pattern or a specific direction; and
transmitting at least a portion of the reference beam through a first replaceable masking plate located in a path of the reference beam and proximate to a holographic recording material, wherein:
the first replaceable band-limited diffuser and the first replaceable masking plate form a first matched set, and
the first matched set is configured to allow exposure of a first elemental hologram of a first particular size on the holographic recording material,
each of the first replaceable band-limited diffuser and the first replaceable masking plate are located in respective positions such that
the first replaceable band-limited diffuser can be replaced with a second replaceable band-limited diffuser, and
the first replaceable masking plate can be replaced with a second replaceable masking plate,
the second replaceable band-limited diffuser and the second replaceable masking plate form a second matched set, and
the second matched set is configured to allow exposure of a second elemental hologram of a second particular size on the holographic recording material.
5. The method of claim 4 , wherein the first replaceable masking plate comprises at least one positioning adjustment device.
6. The method of claim 4 , wherein the first replaceable band-limited diffuser comprises at least one positioning adjustment device.
7. The method of claim 4 , wherein the first replaceable band-limited diffuser is configured for a wavelength corresponding to a wavelength of the coherent beam.
8. The method of claim 4 , further comprising:
replacing the first replaceable band-limited diffuser with the second replaceable band-limited diffuser; and
replacing the first replaceable masking plate with the second replaceable masking plate.
9. The method of claim 4 , wherein the second matched set is configured for the second elemental hologram to be larger than the first elemental hologram.
10. The method of claim 4 , wherein the second matched set is configured for the second elemental hologram to be smaller than the first elemental hologram.
11. The method of claim 4 , wherein the second matched set is configured for the second elemental hologram to be differently shaped than the first elemental hologram.
12. The method of claim 4 , further comprising:
causing the object beam to interfere with the reference beam at the first elemental hologram.
13. A system comprising:
a beam splitter configured to split a coherent beam into an object beam and a reference beam;
means for displaying a rendered image;
means for conditioning the object beam with the rendered image;
a first replaceable band-limited diffuser and a second replaceable band-limited diffuser, wherein
the first replaceable band-limited diffuser comprises a deterministic phase pattern designed to diffuse light in at least one of: a specific pattern or a specific direction;
means for transmitting at least a portion of the object beam through the first replaceable band-limited diffuser;
a first replaceable masking plate and a second replaceable masking plate, wherein:
the first replaceable masking plate is located in a path of the reference beam and proximate to a holographic recording material,
the first replaceable band-limited diffuser and the first replaceable masking plate form a first matched set, and
the first matched set is configured to allow exposure of a first elemental hologram of a first particular size on the holographic recording material;
means for transmitting at least a portion of the reference beam through the first replaceable masking plate, wherein
each of the first replaceable band-limited diffuser and the first replaceable masking plate are located in respective positions such that
the first replaceable band-limited diffuser can be replaced with the second replaceable band-limited diffuser, and
the first replaceable masking plate can be replaced with the second replaceable masking plate,
the second replaceable band-limited diffuser and the second replaceable masking plate form a second matched set, and
the second matched set is configured to allow exposure of a second elemental hologram of a second particular size on the holographic recording material.
14. The system of claim 13 , wherein:
the first replaceable masking plate comprises at least one positioning adjustment device.
15. The system of claim 13 , wherein:
the first replaceable band-limited diffuser comprises at least one positioning adjustment device; and
the first replaceable band-limited diffuser is configured for a wavelength corresponding to a wavelength of the coherent beam.
16. The system of claim 13 , wherein the second matched set is configured for the second elemental hologram to be larger than the first elemental hologram.
17. The system of claim 13 , wherein the second matched set is configured for the second elemental hologram to be smaller than the first elemental hologram.
18. The system of claim 13 , wherein the second matched set is configured for the second elemental hologram to be differently shaped than the first elemental hologram.
19. The system of claim 13 , further comprising:
means for causing the object beam to interfere with the reference beam at the first elemental hologram.