Applications and Advantages of Custom Optical Filters

In modern optical technology, custom optical filters are important optical components and are widely used in various fields, including laser technology, imaging systems, medical equipment, etc. This article will detail the types, functions, and advantages of custom optical filters in different applications.

Types of Custom Optical Filters

Custom optical filters come in many varieties, mainly including bandpass filters, dichroic mirrors, and cutoff filters.

Bandpass Filters

Bandpass filters are designed to transmit light of specific wavelengths while blocking light signals of other bands. These filters can be categorized by wavelength into UV bandpass (200-400nm), visible bandpass (400-700nm), and near-infrared bandpass (700-1600nm). Custom optical filters with bandpass characteristics are vital in laser technology, rangefinding, imaging, telecommunications, and multi-photon fluorescence fields.

The bandpass filter design often relies on ion-assisted deposition (IAD) technology, which provides high-precision filters ensuring a broad cutoff range and high transmittance. This precise design makes custom optical filters especially effective in scenarios requiring specific wavelength signal transmission.

Dichroic Mirrors

Dichroic mirrors are another important type of custom optical filters, typically used in optical systems with a 45° angle of incidence. They transmit or reflect light based on the wavelength, allowing light in a specific wavelength range to pass through while reflecting other ranges. This characteristic makes dichroic mirrors widely used in spectral analysis and fluorescence microscopy.

Cutoff Filters

Cutoff filters can be divided into long-pass filters and short-pass filters, used respectively for transmitting long-wavelength spectra and cutting off short-wavelength spectra, or vice versa. UV and IR cutoff filters are common types that effectively isolate unwanted wavelengths and protect the performance of subsequent equipment or detectors.

Functions and Advantages of Custom Optical Filters

The main function of custom optical filters is to isolate specific wavelengths and provide the required optical performance in various applications.

The advantages of custom optical filters lie in their durability and reliability. Our filters are certified by ISO9001, RoHS, SGS, and CTI, ensuring their quality and environmental friendliness. This makes custom optical filters widely used in machine vision, medical fields, life sciences, and industrial inspection, among others.

Applications of Custom Optical Filters

In machine vision, custom optical filters can improve the clarity and contrast of images, helping systems identify targets more accurately. In medical equipment, precise wavelength control of filters is crucial for bioimaging and diagnostics. Meanwhile, in the laser optoelectronics field, custom optical filters can enhance laser performance and improve light source stability.

Custom optical filters play an indispensable role in modern optical technology. Whether it is bandpass filters, dichroic mirrors, or cutoff filters, these components meet specific needs across different fields through precise design and manufacturing. As technology continues to advance, the prospects for custom optical filters will become even broader, providing strong support for innovation in various industries.