What Is a Long Pass Optical Filter?
Product Specifications
| Parameter | Value / Description |
|---|---|
| Material | JB510 Optical Glass |
| Size | 130 × 90 × 1 mm |
| Cut-on Wavelength | 515 ± 5 nm |
| Transmission Range | >90% above 530 nm |
| Blocking Range | OD3 below 500 nm |
| Surface Quality | 40-20 Scratch-Dig |
| Parallelism | <3 arcmin |
| Flatness | λ/4 |
| Coating | Optional AR / HR coating available |
| Refractive Index (nd) | 1.52 |
| Customization | Shape, thickness, and size on request |
Pictures of Long Pass Filter
Key Features
- Sharp 515nm cut-on with high optical precision
- High transmission in visible spectrum
- Low auto-fluorescence and high laser damage threshold
- Durable JB510 substrate and stable performance
- Custom shapes, coatings, and sizes available
Applications
- Fluorescence and laser microscopy
- Machine vision and color separation
- Biomedical imaging and diagnostics
- Spectroscopy and optical sensing
- Scientific and industrial optical instruments
Detailed Video of 515nm Long Pass Filter
Advantages of Choosing VY Optics
- Over 15 years of optical manufacturing experience
- Custom wavelength, size, and coating options
- Advanced metrology and strict quality control
- Fast delivery and OEM/ODM service
- Professional optical engineering support
People Also Ask (FAQ)
What does a 515nm long pass filter do?
It transmits light above 515nm while blocking shorter wavelengths, allowing specific spectral components to pass through for imaging or analysis.
What material is used for this filter?
The filter is made of JB510 optical glass, which offers stable transmission and low absorption across the visible spectrum.
Can it be customized?
Yes, VY Optics offers full customization of wavelength, coating, and size.
Is it suitable for laser use?
Yes, it is ideal for laser and fluorescence applications due to its high laser damage threshold and surface quality.
How to Choose the Right Optical Filter
When selecting an optical filter, consider wavelength, coating, thickness, and application.
JB510 glass long pass filters are ideal for fluorescence and imaging systems that require sharp cut-on and high transmission.
