Narrow Bandpass Interference Light Filter
Processing Capacity
Capable to realize the complete processes in optical design, instrument design, component high-precision molding,
planar processing, spherical processing, aspheric processing, coating, etc.
Applications
Photoelectric information; aerospace; new energy; nuclear power and nuclear energy equipment and other fields.
Performance
● Narrow bandpass interference filter is a bandpass filter, which can select a specific wavelength from the incident
light under the interference action of dielectric and metal multilayer film, and its half-peak bandwidth (half of the
peak) is 1nm to 40nm.
● Narrow bandpass interference filter can substitute expensive optical splitters such as gratings and are widely
used in optical experiments and industrial fields.
● We can offer 3 types of products: laser line/spectral line/VIS and NIR products. The laser line interference light
filter is used for some specific laser wavelength, and its half-peak bandwidth is 1, 3 and 10 nm. Spectral line
interference light filter is used for the spectral line of some element, and its half-peak bandwidth is 10 nm. VIS
and NIR interference light filter is for the wavelength of 300~1000 nm, the central wavelength interval is 50 nm,
and its half-peak bandwidth is 10 or 40nm.
Features
| | Narrow Bandpass Interference Light Filters |
| Model | Light Filter-NB-X |
| Material | Specified by the customer |
| Optical film | Electrolytic multilayer film, metal film |
| Clear aperture | 95% |
| Spectral data | The characteristic curve of transmission spectrum are attached |
| Parallelism | ≤30 seconds |
| Surface quality | 60-40 |
| Dimensional tolerance | A. Half-peak bandwidth 1 nm: half-peak bandwidth tolerance ±0.2 nm;
central wavelength tolerance +0.2, -0 nm |
| B. Half-peak bandwidth 3 nm: half-peak bandwidth tolerance ±0.5 nm;
central wavelength tolerance + 0.5, -0 nm |
| C. Half-peak bandwidth 10 nm: half-peak bandwidth tolerance ±2.0 nm;
central wavelength tolerance + 3, - 0 nm |
| D. Half-peak bandwidth 40 nm: half-peak bandwidth tolerance ±8.0 nm;
central wavelength tolerance +10, - 0 nm |
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Narrow Bandpass Interference Light Filter Images
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