Product Descriptions:
| Characteristics: | |
| Central Wavelength (CWL): | 500nm 510nm 520nm 525nm 530nm 540nm 550nm 560nm or customized* |
| Transmittance: | >90% or specified |
| Dimension: | Customized** |
| Thickness: | 1.0mm*** |
| 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
 |
Picture 1: BP520-30nm Spectral Curve |
What is a bandpass filter?
A narrow bandpass filters is used for transmitting specified wavelength band and block the rest wavelength range.
- By visible and invisible views, there are VIS range, IR and UV bandpass filters.
- By numbers of wavelengths band, there are bandpass filters, dual bandpass, triple bandpass and multi bandpass.
- typically, for those short range of bandwidth, it’s so called Narrow bandpass filters.
Shenzhen Hengda Liyuan Optoelectronics have focus on bandpass filters for more than 15years, can produce narrow bandpass filters which lower to 5nm, and customized multi bandpass filters based on customer specification.
What is typical application for narrow bandpass filter?
What is key parameter when choose for right Narrow bandpass filter:
When selecting a Narrow bandpass filters:
- The center wavelength (CWL) will be one of key parameter to be designated, with a tolerance of generally +/-5nm or +/7nm which depend on the user inquiry.
- Secondly, Full Width at Half Maximum(FWHM) means the transmittance range, for those FWHM is short, normally called narrow bandpass filters which no united definition and typically for lower than and equal to 10nm.
- Then, Peak and Average Transmittance, e.g 90%,95%…etc. higher transmittance might need Anti-reflective(AR) coating.
other Bandpass filters in stock from Liyuan Optoelectronics: BP500 BP510 BP525nm BP530 BP550 BP560nm…etc.
