No products in the cart.
Longpass Filters, sometimes referred to as “sharp-cut” filters, are specifically designed to pass a broad spectrum of longer wavelength light while blocking shorter wavelengths.
Longpass Filters are often used in fluorescence applications to block an excitation light source or to pass multiple emission wavelengths, improving signal to noise ratio. They are also commonly used in photography and astronomy.
Key Benefits in Industrial Imaging:
Are an economical solution for isolating specific spectral regions
Can be used with Shortpass Filters for a custom, fine-tuned Bandpass Filter
Use StablEDGE® design to reduce angular dependency and minimizes short-shifting effects
Are anti-reflection coated for maximum transmission in VIS and NIR spectrums
Key Features:
Custom shapes and sizes are also available.
Have Peak transmission ≥90%
Use StablEDGE® design to reduce angular dependency and minimizes short-shifting effects
Have double-side polished glass for exceptional parallelism and optical flatness
Exhibit exceptional surface quality: 40/20 scratch/dig
Are available in wavelength ranges from 350nm to 1500nm
In-stock, ready-to-ship
Are available in Threaded Mounts, sizes M13.25 to M105; 25.4® C-Mount
Example of a Longpass Filter spectral curve:
