Number | Name | Date | Kind |
---|---|---|---|
3016464 | Bailey | Jan 1962 |
Entry |
---|
NASA Tech. Brief NTN-78/0156, "Optical Proximity Detector", NPO-13306, Caltech/JPL, Pasadena, California. |
Van Nostrand's Scientific Encyclopedia's definition of "collimator", Princeton, N.J., Fourth Edition, 1968. |