1.Product Descriptions :
| Characteristics: | 540nm Longpass Filter |
| Type: | Longpass Filter |
| Cut-on Wavelength (CWL): | 540nm+-5nm |
| Spectral range: | 380-1100nm |
| Peak Transmittance: | >90% or specified |
| Optical Density: | OD2-OD3 |
| Shape: | Round, Square, Custom Shape |
| Color: | Orange |
| Surface Quality: | 60/40 scratch-dig |
| Substrate: | Optical Glass |
| Dimension: | 31.7*12.3mm or specified** |
| Thickness: | 1.0mm or specified*** |
| Remark:Can do customization per requirement *Customized capability: 380-2500nm, stock for 10nm intervals. **Common for 86x86mm, 80x80mm, other can customized, max. 300x300mm *** Thickness available: 0.21、0.3、0.55、0.7、1.0、1.1、1.5、1.8、2.0、3.0mm…etc | |
2. Measured Spectral curve
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Picture 1: LP540nm Spectral measurement Curve |
What is 540nm longpass filter?
A 540nm longpass filter is an optical device that transmits light with wavelengths longer than 540nm and blocks light with shorter wavelengths.
What is typical application for 540nm longpass filter?
What is key parameter when choose for right 540nm longpass filter?
When selecting a 540nm longpass filter, the cut-on wavelength will be one of key parameter to be designated. Secondly, transmission, e.g., 90%,95%…etc. higher transmittance might need Anti-reflective(AR) coating. Third, optical density, e.g., OD2,OD3, OD4, Higher optical density provides better blocking. Forth, substrate material, such as B270, fused silica, sapphire. Fifth, surface quality, 60/40 scratch-dig for general use. Sixth, environmental durability, the hard coating enhances durability against humidity, high temperatures, and cleaning processes.
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 Fitlers, IR cut-off Filters, Longpass & Short Filters,Notch Filters, ND filters, Star filters and Optical sapphire block.
