Reducing the reflectance of surfaces to radiation

Gas separation: apparatus – Electric field separation apparatus – Electrode cleaner – apparatus part flusher – discharger – or...

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96 27R, 96383, 96 79, 96 84R, 350276R, G03C 500, G03C 504

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active

040134652

ABSTRACT:
A method of producing a surface having a reduced reflectance to electromagnetic radiation in a predetermined wavelength band which comprises arranging on the surface a regular array of protuberances having a height which is not less than one third of the length of the longest wavelength in the band and at a spacing which is less than the length of the shortest wavelength of the band divided by the refractive index of the material of which the protuberances consist.

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patent: 3698928 (1972-10-01), Blome
patent: 3718078 (1973-02-01), Plummer
patent: 3728117 (1973-04-01), Heidenhain et al.
patent: 3732363 (1973-05-01), Glenn
patent: 3733258 (1973-05-01), Hanak et al.
patent: 3777633 (1973-12-01), Kirk
patent: 3815969 (1974-06-01), Fletcher et al.
patent: 3909111 (1975-09-01), Meyerhofer
patent: 3940511 (1976-02-01), Deal et al.

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