Technical Knowledge
Calculate the thickness of optical glass film
We already know that the transmittance is related to the refractive index of the coating, but not about its thickness. However, if we can work
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Technical Knowledge
Refractive index of optical coating
According to the basic theory of electromagnetism, transmission and reflection for different media are mentioned. If it is vertically incident from medium N1 to N2
Technical Knowledge
Optical Coating process
The optical film is realized in a high vacuum coating cavity. The conventional coating process requires increasing the substrate temperature (usually about 300 ℃); More
Technical Knowledge
Optical coating
Optical coating refers to the process of coating a layer (or multiple layers) of metal (or medium) film on the surface of optical parts. The
Technical Knowledge
Process flow of glass coating
Glass coating is to coat one or more layers of metal films or metal compounds on the surface of glass to change the optical properties
Product Knowledge
what kinds of filters can be divided into?
According to the spectral characteristics of filters, filters can be divided into six categories: Bandpass filter, cut-off filter, spectroscopic filter, neutral density filter, reflection filter
Material Knowledge
What is BK7 glass?
BK7 is the brand of Schott glass factory in Germany, and K9 is the corresponding domestic glass brand. N-bk7 is the glass of German Schott,
Product Knowledge
The OD value in the filter
The OD value in the filter OD is when light passes through a sample, part of the light will be absorbed. In spectroscopy, transmittance is
Material Knowledge
K9 glass
K9 glass is a glass product made of K9 material, which is used in optical coating and other fields. K9 material belongs to optical glass.
Material Knowledge
High borosilicate glass
High borosilicate glass (also known as hard glass) is made by using the conductivity of glass under high temperature to realize glass melting through heating