Reflectance Calculator is a tool that calculates reflectance, transmittance and absorptance when a light strikes on multi-layer thin film. Now it is a freeware! Just let me know who you are. We will send the unlock code.
When a light is incident on a surface, some amount of light is reflected and transmitted. The reflection and transmission can be very complex if very thin film is coated on the surface because the reflected light interferes with the incident light. Sometimes this complex phenomenon gives us a benefit. Light can be transmitted or blocked using thin films on a surface. For example, sunglass blocks UV light but transmits visible light. The transmitted color can vary depending on the refractive index and thickness of the thin film.
Proper materials should be stacked with proper thickness in order to get useful reflection characteristics. "Reflectance Calculator" calculates reflectance and transmittance to make you choose proper materials with proper thickness.
Features
- Easy to install. Just run simple setup programs. Additional engineering software is not required.
- It is possible to calculate reflectance for very complex thin film structure. The number of layers is unlimited. It is easy to calculate reflectance for repeated thin film structure. It provides layer repetition function.
- Reflectance calculation is also available for a structure, where thin film is coated on front side of a substrate and another thin film is coated on the other side of the substrate.
- An absorbable material like metal is supported.
- Refractive index files are required to calculated reflectance. User can make a reflective index file easily.
- Reflectance, transmittance and absorptance curve can be drawn according to thickness, incident angle and wavelength of the incident light.
