Translator Disclaimer
Chapter 4:
Reflection Reducing Coatings
Reduction of the reflectance R of a surface produces either of two effects: (1) If the material below the surface is opaque, the radiant absorption increases (see §8.5 and §4.4.3); or (2) if the material is transparent, such as a slab of glass, its overall transmittance is enhanced. For the latter effect, English lacks the proper verb equivalent to the Russian просветление (prosvetleniya), which translates as “clarification,” “brightening” or “to make more transparent.” Although antireflection (“to be against reflection”) is adequate as an adjective or noun, it is quite awkward as a verb. This void in the English language could be filled by the transitive verb dereflect — it is not distant from the German Entspiegelung. It could appear in a sentence: “SF-10 glass is dereflected at 633 nm by a two-layer antireflection coating.” The verb stems from Latin: reflectare (“to reflect”) and de (“removal of”). This and the acronym AR (for antireflection) are used in this chapter which surveys antireflection coating design. Procedures are emphasized and, where possible, mathematical details are relegated to appendices.
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