Chine (Rép. pop) Divers
Divers

Filter

Quantité : 20000pcs p   Prix : $0.5-200.00

The optical glass filter is an optical device used to select the desired radiation band. One of the common characteristics of filters is that there is no filter to make the image of celestial bodies brighter, because all filters absorb certain wavelengths, which makes the object darker. Its main feature is that the size can be made quite large. Thin film filters generally transmit longer wavelengths and are mostly used as infrared filters. The latter is to form a certain thickness of high refractive index or low refractive index metal-dielectric-metal film or all-dielectric film alternately on a certain substrate by vacuum coating, forming a low-order, multi-stage tandem solid method Brie-Perot interferometer. The choice of film material, thickness and series connection mode is determined by the required center wavelength and transmission bandwidth λ. Ecoptik (also known as BRD Optical) offers different types of custom optical filters, such as optical comb filter, optical high pass filters, optical low pass filters, colored glass filters, colored glass filters, crystal optics filters, and linear variable filters.

Types Of Filter

Bandpass Filter

Longpass Filter

Neutral Density Filter

Narrow Bandpass Filter

Cut Off Filter

Optical Cylindrical Lens

Optical Dome

Optical Mirror

Optical Prism

Optical Spherical Lens

Reticles

Infrared Optics

Filter

Filter Applications

The optical filter mainly uses the principle of light interference to obtain the transmission effect of the spectrum. The optical filter deposits films with different refractive indexes on the optical substrate through a vacuum coater to achieve different optical effects. When mixed light of multiple wavelengths passes through the filter, interference effects are generated due to the difference in refractive index, resulting in a very high transmittance of light of a specific wavelength while light of other wavelengths is reflected and absorbed.

Filter FAQs

Can You Provide Filters With Customized Wavelength Ranges?Can You Provide Filters With Customized Wavelength Ranges?

Yes, we can. We can customize the design based on the requirements of customers in different bands.

How To Detect The Transmittance Or Reflectance Of The Filter?How To Detect The Transmittance Or Reflectance Of The Filter?

For detection by spectrophotometer, we have two methods, transmission and reflection.

Ecoptik is a professional optical filters ltd, we provide optical component, optical filter film, optical filter design, custom optical lenses and etc. Want to know more? Please contact us.

Localisation : No.399 Bocai Road, High-Tech Industrial Development Area, Changchun, Jilin, China 130000, 130000 Changchun,
Personne à contacter : Wu Sandy, +86 (431) 8188 4163

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Filter

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