Product Descriptions：
| Product Name: | 890nm Longpass filter |
| Type: | Interference filters |
| Cut-off Wavelength (nm): | 890nm |
| Average Transmittance(%): | 92%, 95% with AR coating |
| Optical Density： | OD2 |
| Passband (nm): | 910-1100nm |
| Spectral Range (nm): | 350-1100nm |
| Surface Quality: | 60/40 scratch-dig |
| Color: | Silver |
| Shape: | Rectangle or customized |
| Dimension (mm): | Customized |
| Thickness: | 1.0mm (other thickness on request) |
| Substrate: | Optical glass |
| Remark: (1) Shape: Rectangle, Square or customized. (2) Common for 86x86mm, 80x80mm, max. 300x300mm. (3) Optional thickness: 0.21、0.3、0.55、0.7、1.0、1.1、2.0、3.0mm…etc. | |
What is an interference type 890nm Optical Longpass Filter?
An interference type 890nm optical longpass filter is a precision optical component that transmits near-infrared light above 910nm while blocking or reflecting most light below 870nm, including ultraviolet light, visible light, and shorter near-infrared wavelengths.This filter helps isolate part of near-infrared signals and reduce interference from unwanted visible light. Common applications include infrared cameras, night vision devices, laser and infrared communication systems, beauty equipment, biomedical imaging, and scientific research.
Related products:
LP900, 900nm Longpass Filter, OD2, AR coating, dielectric coating, NIR Filter for machine vision
Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical vacuum technology that apply depositing nano-materials through ion-assisted evaporation onto a multilayer hard film in a high vacuum environment, which the coating layer is firm and has good tightness and small bandwidth drift. The company have been focus on optical coating for more than 17 years ,and the company offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass Filters, Shortpass Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.
