Anti-reflective coatings on lenses use thin-film interference to eliminate the reflection of a particular color. Suppose a glass lens (ng = 1.51) is covered with a thin film (nf = 1.31) to prevent green light (λ = 520 nm) from being reflected. Part (a) Write an expression for the minimum thickness the film can have, t. Part (b) Calculate the minimum thickness, t, in nanometers?
Anti-reflective coatings on lenses use thin-film interference to eliminate the reflection of a particular color. Suppose a glass lens (ng = 1.51) is covered with a thin film (nf = 1.31) to prevent green light (λ = 520 nm) from being reflected. Part (a) Write an expression for the minimum thickness the film can have, t. Part (b) Calculate the minimum thickness, t, in nanometers?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter27: Wave Optics
Section: Chapter Questions
Problem 7P: In Figure P27.7 (not to scale), let L = 1.20 m and d = 0.120 mm and assume the slit system is...
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Problem 12: Anti-reflective coatings on lenses use thin-film interference to eliminate the reflection of a particular color. Suppose a glass lens (ng = 1.51) is covered with a thin film (nf = 1.31) to prevent green light (λ = 520 nm) from being reflected.
Part (a) Write an expression for the minimum thickness the film can have, t. |
Part (b) Calculate the minimum thickness, t, in nanometers? |
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