Method for measuring optical parameter of film on coated glass
A technology of coated glass and thin film optics, which is used in testing optical properties, measuring devices, and material analysis by optical means. Inexpensive, stable measurement value
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[0018] The present invention will be described in further detail below in conjunction with accompanying drawings and examples.
[0019] Taking online solar control coated glass as an example, the film layer 1 is a silicon-based thin film, and the substrate 2 is ordinary white glass, as shown in Figure 1, where I is the incident light, R is the reflected light, and T is the transmitted light. Measuring the visible light transmission T of the coated glass under the state of normal incidence m and reflectance spectrum R m As shown in Figure 2, the dots and square dots respectively represent T m and R m . Calculate the transmittance T of light perpendicularly incident on the surface of the film by matrix method c and reflectance R c The following formula:
[0020] T c ( λ ) = 4 n s n ...
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