Hot and cold mirror is a kind of mirrors with unique spectral properties, sometimes also called IR or heat control filters. Hot mirror reflects infrared (IR) light, while Cold mirror reflects visible and ultraviolet (UV) light.
Cold mirror (IR passing filter) is a specific dielectric mirror which is typically reflects visible light (nearly 95%) and transmits infrared wavelengths (90% of IR above 750 nm). A further case in point of this type of a mirror is a UV cold mirror, which reflects UV wavelengths and transmits visible and IR ranges. Conversely, Hot mirror (IR blocking filter) has reverse spectral physical characteristics. It reflects near infrared light and transmits the visible and UV ranges.
Both the types of mirrors can be designed and can be applied for specific angles of incidence, from 0° to 45°, though in practice a hot mirror typically operates at a low angle of incidence, whereas a cold mirror operates typically at 45° angle of incidence. Hot and cold mirror substrates are typically heat resistant glasses.
After hot & cold mirrors, let’s find out what is the application of Laser Mirror. Laser Mirror is the high reflection coatings designed for the use of laser reflection. They are designed for either single line, multi-line or broadband kind sources. For high reflection, strength and damage tolerance it must be coated with the hard, durable dielectric multilayer.
COE Optics 