1.Product Descriptions :
| Characteristics: | 630nm Longpass filter |
| Type: | Longpass filter |
| Central Wavelength (CWL): | 630nm ±3nm |
| Transmittance: | >90% or specified |
| Optical Density： | OD2-OD6 |
| Surface Quality: | 60/40、80/20 scratch-dig |
| Color: | Red |
| Shape: | Round, Square, Custom Shape |
| Dimension: | specified |
| Thickness: | specified |
| Substrate: | Ultra-clear glass,K9,BK7,B270,D2637T, Quartz Glass(Fused Silica) or other specified |
| Spectral range: | 200-1100nm |
| Remark： *Customized capability: 380-2500nm, stock for 10nm intervals. **Common for 86x86mm, 80x80mm,other can customized, max. 300x300mm *** Option: 0.21、0.3、0.55、0.7、1.0、1.1、2.0、3.0mm…etc. | |
2. Measured Spectral curve
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Picture 1: LP600nm Spectral Curve |
What is 630nm longpass filter?
A 630nm longpass filter is an optical edge filter that blocks all wavelengths shorter than 630 nm and highly transmits red and near-infrared light above 630 nm, fully cutting off UV, blue, green and yellow light in the short-wave range.
What is typical application for 630nm longpass filter?
What is key parameter when choose for right Longpass filters?
When selecting a suitable longpass filter, the key parameters include cut-on wavelength accuracy, transmission, optical density in the blocking band, and edge steepness, as these spectral characteristics directly determine the filter’s ability to eliminate short-wavelength interference and transmit the desired longer wavelengths. In addition, substrate material, coating durability, angle of incidence, as well as size and thickness also need to be considered.
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.
