Optical Analysis System For HOE Quality Appraisal
This application discloses an automated system for measuring the quality of an HOE using incoherent light and a camera or image screen.
1 . A system for analyzing quality of a holographic optical element comprising an incoherent light source, optical transformation optics, a narrow band filter, and a camera or an image screen.
2 . The system of claim 1 where the optical transformation optics comprises a fiber optic cable.
3 . The system of claim 1 where the optical transformation optics comprises one or more lenses.
4 . The system of claim 1 where the optical transformation optics comprises a spatial filter.
5 . The system of claim 1 where the optical transformation optics comprises a spatial filter, a fiber optic cable, one or more lenses, or a mixture thereof.
6 . A method of measuring quality of a holographic optical element (HOE) comprising:
(a) illuminating an active area of an HOE with incoherent light of a very narrow wavelength range, wherein the HOE diffracts the light into a camera or onto an image screen; and (b) detecting an image depicting quality or uniformity of the HOE.
7 . The method of claim 6 comprising an incoherent light source, optical transformation optics, a narrow band filter, and a camera or an image screen.
8 . The method of claim 7 where the optical transformation optics comprises a fiber optic cable.
9 . The method of claim 7 where the optical transformation optics comprises one or more lenses.
10 . The method of claim 7 where the optical transformation optics comprises a spatial filter.
11 . The method of claim 7 where the optical transformation optics comprises a spatial filter, a fiber optic cable, one or more lenses, or a mixture thereof.
12 . A system for analyzing quality of the focusing optical properties of a holographic optical element comprising an incoherent light source, optical transformation optics, a narrow band filter, one or more translation stages and a camera or an image screen.
13 . The system of claim 12 where the optical transformation optics is fiber optic cable.
14 . The system of claim 12 where the optical transformation optics is a telescope.
15 . The system of claim 12 where the optical transformation optics is a spatial filter.
16 . The system of claim 12 where the optical transformation optics comprises a spatial filter, a fiber optic cable, one or more lenses, or a mixture thereof
17 . A method of measuring quality of the focusing optical properties of a holographic optical element (HOE) comprising: (a) illuminating an active area of an HOE with incoherent light of a very narrow wavelength range, wherein the HOE diffracts the light into a camera or onto an image screen; and (b) detecting an image depicting quality or uniformity of the HOE at different positions by means of one or more translations in space.
18 . The method of claim 17 comprising an incoherent light source, optical transformation optics, a narrow band filter, and a camera or an image screen.
19 . A method of assaying the quality of a population of holographic optical elements comprising illuminating an HOE with light having a very narrow wavelength range, wherein the light is diffracted back into a camera or onto an image screen, and detecting quality of an image for each member of the population of holographic optical elements.
20 . The method of claim 19 comprising an incoherent light source, optical transformation optics, a narrow band filter, and a camera or an image screen.