Optical Filters
Longpass (LP) filters are transparent optical elements used in various fields of science and technologies to transmit longer wavelengths of light in selection than the cut-on wavelength while blocking or attenuating shorter wavelengths. Longpass filters operate on the principle of spectral filtering, a process in which specific wavelengths of light are allowed to pass through while blocking others. Unlike shortpass filters, which transmit shorter wavelengths, longpass filters are designed to transmit light with wavelengths longer than a defined cut-on point. This cut-on point is a critical parameter and is expressed as the "cut-on wavelength." Longpass filters form a crucial part of applications ranging from photographic and spectroscopes to telecommunications and astronomical.
Longpass filters are utilized in instruments like spectrophotometers and fluorescence microscopes, where the filters help isolate the emission or absorption spectra of specific compounds, separating and analyzing light based on its wavelength. This aids in scientific research, including the identification of chemical substances and the investigation of molecular interactions.
Hangzhou Shalom EO offers stocked and custom longpass filters. our long pass filters are available in various dimensions, shapes, and coating options, providing flexible options to meet your unique application needs. Each LP Filter is crafted with precision and care, ensuring steep cut-on slopes and consistent transmission of longer wavelengths while blocking shorter ones with effective strength, enabling clear imaging and analysis and securing durabilities under harsh working conditions at the same time.
