515nm notch filter spectrometer biomedical laser protective filter negative filter

The 515nm notch filter is a type of interference filter, also known as a negative filter or band-stop filter. Its core function is to efficiently block (attenuate to extremely low levels) light at the specific 515nm wavelength while allowing high transmission of light outside this band. The transmission curve exhibits a concave shape. This type of filter is primarily used to eliminate or suppress interfering light at 515nm in optical paths while preserving light signals in other effective bands. It is suitable for optical systems requiring precise spectral control.

Key Technical Parameters of the 515nm Notch Filter

Process and Physical Characteristics

• Coating Technology: Utilizes high-temperature evaporation combined with ion source-assisted coating processes to form highly durable hard film layers, enhancing wear resistance and environmental adaptability.
• Shape Customization: Can be processed into shapes such as circles or rectangles, with surface quality meeting the 60/40 standard, fulfilling the installation requirements of various optical systems.

Application Areas of the 515nm Notch Filter

Based on its precise suppression capability at the 515nm wavelength, this filter is widely used in the following scenarios:

• Biomedical Detection: Such as in PCR testing and biochemical analysis, it eliminates background interference light at 515nm, improving the signal-to-noise ratio of detection signals.
• Machine Vision and Industrial Cameras: Filters stray light of specific wavelengths to optimize imaging quality, making it suitable for high-precision optical detection systems.
• Laser Applications: In laser experiments or equipment, it suppresses scattering or reflection interference from 515nm lasers, protecting detectors or enhancing beam purity.
• Spectral Analysis: As a key component in spectrometers, it separates target spectra from interfering bands, improving analysis accuracy.