Linear Variable Bandpass Filters
Versatility: A single linear variable bandpass filter can replace multiple traditional filters, offering a broad range of wavelength tuning.
Adjustability: Easily adjust the center or edge wavelength by sliding or rotating the filter to meet various application needs.
High Spectral Resolution: Advanced wedge-shaped multi-layer coating techniques ensure high spectral resolution and low optical loss over a broad tunable spectral range.
Deep Blocking Depth: Efficiently cuts off undesirable light, maximizing optical performance at the required wavelength.
Compact and Lightweight: Ideal for integration into portable and space-constrained optical setups.
Customizable Specifications: Central wavelength, bandwidth, and filter size can be tailored to meet specific application requirements.
Applications: Spectroscopy, Hyperspectral Imaging, Fluorescence Microscopy, etc.
Linear Variable Bandpass Filters, or continuously variable filters, are precision-coated, wedge-shaped bandpass optical filters. These filters exhibit central wavelengths that change linearly (though not always perfectly linearly) across the length of the filter. This spatial variation in optical properties allows for a linear change in the transmission characteristics across the filter’s surface. As a result, a single linear variable bandpass filter can fulfill the function of multiple homogeneous filters or a grating-based monochromator. The center or edge wavelength can be adjusted by sliding or rotating the filter.
Specifications:
| Central Wavelength | 450-1000 nm |
| Peak Transmission Rate | ≥60% |
| FWHM | 50-400 nm |
| Out of Band Cutoff depth | ≥OD3 |
| Blocking Range | 300-1100 nm |
| Linear Gradient Rate | 60 nm/mm |
| Size | 30-40 mm(or customized) |
| Surface Quality | 80/50 S/D |
| Material | Optical-grade Glass |
Key Features:
- Versatility: A single linear variable bandpass filter can replace multiple traditional filters, offering a broad range of wavelength tuning.
- Adjustability: Easily adjust the center or edge wavelength by sliding or rotating the filter to meet various application needs.
- High Spectral Resolution: Advanced wedge-shaped multi-layer coating techniques ensure high spectral resolution and low optical loss over a broad tunable spectral range.
- Deep Blocking Depth: Efficiently cuts off undesirable light, maximizing optical performance at the required wavelength.
- Compact and Lightweight: Ideal for integration into portable and space-constrained optical setups.
- Customizable Specifications: Central wavelength, bandwidth, and filter size can be tailored to meet specific application requirements.
Applications:
- Spectroscopy: Isolates specific spectral bands for detailed analysis.
- Hyperspectral Imaging: Enables the capture of images across various spectral bands, enhancing the analysis of materials, biological samples, and more.
- Fluorescence Microscopy: Enhances the isolation of fluorescence signals, improving the accuracy and clarity of imaging.
With their wide operating range, high transmission efficiency, and robust construction, Kingwin Optics’ Linear Variable Bandpass Filters provide reliable performance in demanding laboratory and industrial environments. Their advanced design allows for precise spectral control and tuning, making them indispensable tools in spectroscopy, hyperspectral imaging, fluorescence microscopy, and other applications requiring detailed spectral analysis.
