Tmax is the maximum transmittance in the transmitted area, Tmin is the minimum transmittance in the transmitted area.

The wavelength position of the Edge filter is defined as the position of the transmittance T=50% which is in the transition region between the passband region and the blocking zone. Longpass filter Called Cut-on,Shortpass filter Called Cut-off.

δ expresses the relative width of the wavelength interval between the passband region and the blocking region relative to the wavelength position of the filter. The smaller this value, the steeper the filter's transmission curve. δ=(λ2-λ1)/λ0*100.

Center Wavelength:λ0=(λ2+λ3)/2;λ2 is the wavelength position of cut on.λ3 is the wavelength position of cut off.

FWHM=λ3-λ2 , slope=(λ4-λ1)/(λ3-λ2) which Indicates the steepness of the bandpass filter

Tmax is the maximum transmittance in the passband, and Tmin is the minimum transmittance in the passband

As the angle of incidence increases, the cut-0n(off) wavelength moves towards the short wave relative to the vertical incidence(AOI=0°), and on the other hand, the polarization resolution increases with the increase of the angle of incidence, resulting in the deterioration of the spectral curve.

For in-stock products that can be shipped on the same day, we ship them after receiving the full amount. For customized products required by customers, part of the payment needs to be paid in advance to reduce cooperation risks and ensure the normal performance of the contract, and the specific prepayment amount is executed according to the contract.

Domestic and international courier companies including China Post can be used. The scope of service includes most countries and the whole territory of China (including Hong Kong, Macao and Taiwan), and the specific service time is related to the distance of the destination.

Our standard warranty period is 12 months from the date of delivery. Extended warranty options are available for certain products.

The customization process typically involves: 1) Submitting your specifications 2) Receiving a quote 3) Approving the design 4) Production 5) Quality control 6) Delivery. The entire process usually takes 2-4 weeks depending on complexity.