Number | Name | Date | Kind |
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4308547 | Lovelady et al. | Dec 1981 | |
4697195 | Quate et al. | Sep 1987 | |
4751529 | Elrod et al. | Jun 1988 |
Entry |
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G. J. Swanson et al., "Infrared Applications of Diffractive Optical Elements", Holographic Optics: Design and Applications, SPIE, vol. 883, 1988, pp. 155-162. |