The SP680 short-wave filter is an optical element specially designed to transmit spectra with wavelengths below 680nm. Since the 680nm band is close to the infrared light boundary, it can also be used as an infrared cut-off filter. The short-wave filter produced by GIAI has the advantages of large cut-off steepness, high transmittance and high background light density. In addition, it is completely different from the traditional optical glass method. When the incident angle changes (rotating from 0 degrees to a large angle), the characteristic cut-off wavelength will move toward the short-wave direction. This function can be applied to system fine-tuning and can obtain the wavelength you need.
Model: SP680 Filters
Specifications: Customized
Material: Optical glass
Key Features
Cut-off Wavelength: This filter allows wavelengths below approximately 680 nm to pass while blocking wavelengths above this threshold.
High Transmission: Ensures shorter wavelengths are transmitted with minimal loss, efficiently meeting applications requiring high signal intensity.
Steep Cut-off: Exhibits a sharp transition around 680 nm to accurately separate desired spectral bands.
Effective Blocking: Blocks longer wavelengths to enhance the clarity and accuracy of detection signals by reducing background noise.
Transmittance wavelength characteristics (reference data)
Applications
Fluorescence Microscopy: Used to filter out excitation light below 680nm while blocking emission or other longer wavelength signals.
Spectroscopy: Isolate specific wavelength ranges for precise measurement and analysis.
Laser Systems: Remove unwanted long wavelength components, allowing for clean, controllable output in multi-laser setups.
Optical Sensors and Detectors: Improve signal-to-noise ratio by blocking stray long wavelength light, especially in environments with multiple light sources.
