Optical Filters are used to selectively transmit or reject a wavelength or range of wavelengths. Optical Filters are used in applications such as fluorescence microscopy, spectroscopy, and clinical chemistry. Bandpass Interference Filters are designed to transmit a portion of the spectrum while rejecting all other wavelengths. Notch Filters reject a portion of the spectrum while transmitting all other wavelengths. Edge or Dichroic Filters transmit wavelengths that are either greater than the cut-on or shorter than the cut-off wavelengths. Color Substrate Filters utilize the materials inherent adsorption and transmission properties, while Neutral Density Filters evenly reduce transmission across a portion of the spectrum.
Absorption and particularly wavelength selective is an important factor in the function of the filters. The two most commonly used absorbers are thin metallic films which are particularly insensitive to wavelength for absorption and colored glasses which absorb wavelengths varied by as much as several orders of magnitudes in only tens of nanometers. Interference filters are multilayer dielectric thin film devices. Metallic films, colored glasses, and thin dielectric films are used in Honour Optics filters. Honour Optics is the professional optical filter manufacturer, wholesale high efficiency optical UV VIS IR filter, welcome to consult procurement customizable large size optical filter and procurement customizable optical filter parts.
Color Filter
Color filter mainly through the coating and colored glass two forms, is a performance of the color optical filter, it can accurately select the desired small band of light, and reflect off the other do not want to pass through the band.
According to the spectral characteristics of the color filter, it can be divided into three categories: cut-off color filter, absorption color filter, and a neutral color filter. The color filter uses a multi-layer dielectric film, which can efficiently extract the light in a specific wavelength range.
IR filter (Infrared filter)
Infrared filters are mainly used in the fields of security monitoring, infrared gas analyzer, night vision products, infrared detectors, infrared receivers, infrared induction, and infrared communication products. Specific products such as surveillance camera, remote control, infrared curtain wall products, infrared sensor toilet, faucet, hand sanitizer device, infrared thermometer, infrared printer, interactive electronic whiteboard, infrared touchscreen, fingerprint recognition machine, face recognition system. Honour Optics is the professional optical filter manufacturer, wholesale high efficiency optical UV VIS IR filter, welcome to consult procurement customizable large size optical filter and procurement customizable optical filter parts.
The working principle of the infrared filter is to use the physical polarization characteristics of quartz, the incoming light, retain the direct part, reflection off the oblique part, to avoid affecting the next sensitive point.
Material of infrared filter: optical glass, quartz glass.
UV filter (Ultraviolet filter)
In the ultraviolet spectrum, the wavelength of 200 ~ 380 nm is called the near-ultraviolet region. The general ultraviolet spectrum refers to the absorption spectrum of this region. The ultraviolet filters produced by Honour Optics are mainly in the range of 200~380nm. The main products include ultraviolet band-pass filters, ultraviolet dichroic mirrors, and ultraviolet beam splitting filters.
Band-Pass Filters
Honour Optics is a professional production of band-pass filter manufacturers, the bandpass filter wavelength accurate, no drift, high cutoff depth, the use of advanced coating equipment, to ensure that each piece of the filter has a strong film adhesion with good film thickness. According to the working wavelength, it can be divided into ultraviolet bandpass filter, visible bandpass filter, infrared bandpass filter.
Interference edge filter (Interference Cut-off filter)
Interference cut-off filter generally requires the transmission of a beam in a certain wavelength range, and the change of the beam deviating from this wavelength is a reflection (or cut-off). Generally, we call the filter in the reflection (cut-off) short-wave region and the filter in the transmission long-wave region as long-wave pass filter. The opposite reflection (cut-off) long wave area, the transmission shortwave area filter is called the short wave pass filter. Honour Optics is the optical filter manufacturer, wholesale high efficiency laser grade optical filter, welcome to consult the price of procurement high efficiency thin-film multilayer optical filter.
Neutral Density Filter
A neutral density filter, also known as an attenuator, is a filter that attenuates the intensity of light without changing the energy distribution of the spectrum. Neutral density filters can evenly attenuate light intensity in a wide spectrum area and are coated with a durable metal film. Such filters can be used in fields such as natural light and laser. The neutral density filter can be divided into two types: absorption and reflection. It attenuates the light neutrally in a wide spectrum and is especially suitable for the calibration of optical systems. Widely used in various optical systems, such as spectrophotometer, clinical biochemical analysis equipment, chemical detection equipment, optical instruments, medical equipment, semiconductor equipment, lighting equipment, and photography, etc.
Non-Reflective Neutral Density Filter
Non-Reflective Neutral Density Filters are designed to evenly attenuate a light source while preventing unwanted back reflections. A proprietary coating design minimizes reflection to less than 2% while maintaining very high neutrality over the entire design spectral range.
| Specifications | |
| Material | All optical material |
| Parallelism | 10″or 1′ |
| Diameter Tolerance | +0.0/-0.1mm |
| Surface Quality | 60-40 scratch and dig |
| Thickness Tolerance | ±0.1mm |
| Wavefront Distortion | λ/4 per 25mm |
| Clear Aperture | >95% |
| Bevel | <0.5mm×45° |
Filters are used in applications such as fluorescence microscopy, spectroscopy, clinical chemistry, or machine vision inspection. And Filters are ideal for life science, imaging, industrial, or defense industries. Honour Optics is the optical filter manufacturer, wholesale high efficiency laser grade optical filter, welcome to consult the price of procurement high efficiency thin-film multilayer optical filter.
Honour Optics provides a diverse range of Optical Filters for Ultraviolet (UV), Visible and Infrared (IR) applications, including bandpass interference, notch, edge, dichroic, color substrate, or ND. We also offer highly durable hard coatings for applications that require high optical densities with maximum performance.