Testing of large optical surfaces with small test plates
نویسندگان
چکیده
منابع مشابه
A new test for optical surfaces
For an optical system to produce the best possible images, the optical surfaces of the mirrors and lenses must be polished to the correct shape to within a fraction of the wavelength of light (in most cases, this means a few tens of nanometers). Interferometry is usually used to inspect the mirror or lens and ensure that the correct shape has been achieved. However, the equipment is expensive a...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1954
ISSN: 0091-0635
DOI: 10.6028/jres.053.005