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Near infrared interference narrowband filter is a type of infrared filter widely used in various fields such as biometric recognition. Interference filters or narrowband filters play an indispensable role in suppressing background noise in photodetectors. Thin film researchers have done a lot of work in the design and manufacturing of filters. Some thin film materials available for researchers in the near-infrared region, such as ZnS-mgf2, are relatively soft or unstable in combination
1. Basic understanding of UV filters (UV lenses or UV glass): Long wave ultraviolet refers to ultraviolet light with a wavelength between 320 nanometers and 400 nanometers, which has strong penetration ability and can penetrate glass. Its energy is equivalent to most chemical bond energies, and it is easy to induce photochemical reactions. This is the type used for photo curing. Medium wave UV-B, with wavelengths between 280-320nm, has weak penetration and is strongly absorbed by glass. It is a type of sunlight
The characteristic fluorescence dichroic mirror, as a low absorption loss long wave pass filter, is easy to operate and clean. It is resistant to UV and chemical damage. The fluorescence dichroic mirror divides the beam into transmitted light and reflected light according to wavelength. The high reflectivity band of the long wavelength fluorescent dichroic mirror is smaller than the cutoff wavelength, and the high transmittance band is larger than the cutoff wavelength. Ruicheng Optoelectronics also provides short wave, high reflectivity beams with longer cutoff wavelengths and high transmittance beams with smaller cutoff wavelengths through dichroic mirrors. Our Fluorescence II
Infrared filters are one of the most important materials for artificial intelligence today. However, it is not an easy task to find manufacturers of biometric filters and optical infrared filters. After all, transparent infrared filters have only gradually become popular in the past two years, and the demand for AI intelligence has increased. The working principle of a filter: It is made of plastic or glass and contains special dyes. A red filter can only allow red light to pass through, and so on. glass
From the enzyme-linked immunosorbent assay, it can be seen that the enzyme-linked immunosorbent assay (ELISA) reader should use colorimetric method to analyze the antigen or antibody content. Speaking of which, an enzyme-linked immunosorbent assay (ELISA) reader is a disguised photoelectric colorimeter or spectrophotometer, and its working principle and main structure are basically similar to those of a photoelectric colorimeter. The light emitted by the light source lamp passes through a filter or monochromatic device and becomes a monochromatic beam. The monochromatic beam passes through the sample in the plastic microplate, is absorbed by the sample, and then reaches the photodetector. The detector will project light onto it
The 940nm narrowband filter is an optical component formed by a special coating process on the surface of various glass materials. It can select any desired wavelength from the incident light, and its half peak is generally between 5 and 50 nanometers. It can also replace expensive spectral devices such as gratings, widely used for various spectral measurements and generation. Chemical analysis instruments, optical experiments, and industrial fields. Our company's 940nm narrowband filter technology parameters: Material: Float glass or quartz glass
In order to achieve high transparency and isolate harmful light, optical coating refers to light that does not meet our optical specifications. Therefore, a thin film is deposited on the surface of the substrate, and the thickness of the single-layer film is generally tens to thousands of angstroms. Optical thin films include chemical coating and physical coating. Currently, physical evaporation is the main method, which converts the thin film material from a solid state to a gaseous or ionic state, travels through space from the evaporation source, reaches the glass surface, and the material arrives
The definition of infrared filter: Infrared filter is an optical grade material that absorbs or reflects visible light and transmits infrared light. Definition of infrared cut-off filter: An infrared cut-off filter is an optical material that transmits visible light but not infrared light. From the definitions of the two, we can see that infrared filters and infrared cut-off filters are two types of filters with completely opposite optical properties. Nowadays, many people also refer to infrared cut-off filters as infrared filters
Most friends believe that polarizers can only be used in cameras. In fact, polarizers used in photography lenses are very common, but they are also very ordinary because polarizers with precise optical indices are expensive. Of course, if you need to customize an ultra precision polarizer, you can contact our customer service. Today, Ruicheng Optoelectronics will take you to learn about polarizers and the application of polarizer principles in machine vision systems. Many machine vision systems detect the surface of objects and objects
UV filter refers to a filter that does not allow ultraviolet light to pass through, and some people also call it a defogging filter. This is because ultraviolet light is in a warm state in the air, making it invisible to the naked eye during sunny photography, resulting in blurry photos. UV filter can block this harmful ultraviolet radiation. Another use of UV filters is to protect the lens from damage. Available designs for UV filters - Open Design - Open Design Package