Number | Name | Date | Kind |
---|---|---|---|
3577094 | Tomlinson et al. | May 1971 | |
4109997 | Iverson | Aug 1978 | |
4109998 | Iverson | Aug 1978 | |
4258976 | Scott et al. | Mar 1981 | |
4278323 | Waldman | Jul 1981 | |
4398791 | Dorsey | Aug 1983 | |
4401360 | Streckmann et al. | Aug 1983 | |
4436367 | Lewis et al. | Mar 1984 | |
4444459 | Woodwell | Apr 1984 | |
4447114 | Koene | May 1984 | |
4460242 | Birch et al. | Jul 1984 | |
4466695 | Kruger | Aug 1984 | |
4472052 | Lofgren | Sep 1984 | |
4492427 | Lewis et al. | Jan 1985 | |
4511934 | Ohira et al. | Apr 1985 | |
4519670 | Spinner et al. | May 1985 | |
4550985 | Hayashi | Nov 1985 | |
4650277 | Husher et al. | Mar 1987 | |
4749249 | Hockaday et al. | Jun 1988 | |
4767175 | Bohner et al. | Aug 1988 |
Number | Date | Country |
---|---|---|
53-21912 | Jan 1978 | JPX |
Entry |
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"Fresnel Lenses as Fiber-Optic Demultiplexers", Electro Optical System Design, vol. 12, No. 6, 06/1980. |