Custom Optical Filters

Bandpass filters are used to selectively transmit a portion of the light spectrum while blocking all other wavelengths of light. Therefore, bandpass filters play an important role in many fields such as life sciences, medicine, materials research, and environmental monitoring. These filters have a wide range of applications and provide important functional support for optical systems in different fields. Noni Optics provides a variety of optical filters, including more than 140 kinds of bandpass filters, to meet different application needs and system requirements, and you can choose and customize them accordingly.

A dichroic filter is an optical filter coated with a thin-film dielectric coating that selectively transmits wavelengths within a specified transmission band and reflects all other wavelengths. Dichroic filters typically operate at a 45° angle of incidence, which reflects rejected light at 90° to transmitted light, allowing selective transmission of specific wavelengths. This makes them useful in applications such as fluorescence microscopy and flow cytometry, where they can selectively transmit specific fluorescent signals to detectors, allowing precise imaging and analysis of samples.

Based on the interference effect of light waves, through precise coating design and optical calculations, notch filters can achieve selective blocking of specific wavelengths or narrow bands while maintaining transmission of other wavelengths. This makes notch filters an important tool for precise spectral selection and signal denoising in optical systems, and plays an important role in laser spectroscopy, microscope imaging, and other life science research. Noni Optics offers a wide range of optical filters, including a range of notch filters.

A multicolor bandpass filter is an optical filter that has multiple bandpass regions that selectively transmit multiple different wavelength ranges while blocking other wavelengths of light. These filters are useful in spectral selection and optical analysis applications, allowing simultaneous observation and analysis of multiple optical signals of different wavelengths. It can be used in many fields such as spectral selection, multispectral imaging, fluorescence microscopy, analytical instruments, optical communication and biomedicine.

A longpass filter is an optical filter whose function is to selectively pass wavelengths greater than the cutoff wavelength of the filter while blocking wavelengths smaller than the cutoff wavelength. They can be used to isolate spectral portions in various industrial or life science applications, including microscopy or fluorescence instrumentation, among others. Noni Optics offers a wide range of longpass edge filters that operate at UV, visible or IR wavelengths. Longpass filters are available in a variety of optical densities. Higher optical density provides higher blocking power.

The purpose of a short-pass filter is to selectively pass wavelengths shorter than the filter cutoff wavelength while blocking regions of shorter wavelengths (higher energy) than the blocking band. Short-pass filters are widely used in life sciences and can provide highly selective and precise wavelength transmission, providing important optical support for fluorescence microscopy and other biological imaging and analysis techniques. We offer both Shortpass filters designed for a 0° angle of incidence,and shortpass dichroic filters for a 45° angle of incidence.