408nm Longpass Filter,LP408nm Long-wavelength pass Filter, Support customized

1.Product Descriptions:

2. Measured Spectral curve

Picture 1: LP408nm Spectral Curve

3.What is typical application for 408nm longpass filter?

4.What is key parameter when choose for right Longpass filters?

When selecting a Longpass Filter, you must consider multiple factors. First, the cut-on wavelength is one of the most important parameters, typically defined as the wavelength at 50% transmittance. Second, you should evaluate the transmittance, usually selecting products with transmittance >90%. Third, consider the blocking depth (optical density). Fourth, examine the transition band steepness, a narrower transition band provides stronger resolution for differentiating wavelengths. Fifth, you must clarify whether the optical path requires 0° (normal incidence) or 45° incidence. Sixth, determine the blocking range and pass band range. Additionally, you need to consider physical and environmental specifications such as substrate type, dimensions and thickness, surface quality, and environmental durability.

Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical technology that apply depositing nanomaterials through ion-assisted evaporation onto a multilayer hard film in a high vacuum environment which coating layer is firm and has good tightness, and small bandwidth drift. Liyuan optoelectronics have been focus on optical coating for more than 17 years and offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass & Short Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.

other Longpass filters in stock from Liyuan Optoelectronics: LP430 LP500 LP560 LP600 LP650 LP800…etc.