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The success or failure of a machine vision project depends on whether it can obtain an excellent illuminated image. If the quality of the collected images is poor, it will make the following image processing work difficult, and thus coaxial light sources have emerged. The basic principle of coaxial light source is to scatter the LED light source through a diffuser plate onto a semi transparent and semi reflective mirror splitter, which reflects the light onto the object and then onto the lens. Due to the light reflected by the detected object being on the same axis as the CCD and camera
With the successive peaks of artificial AI in China, facial recognition technology has developed rapidly. According to institutional predictions, by 2020, the market size of facial recognition will reach 200 billion yuan, including approximately 70 billion yuan for customs clearance security products and 50 billion yuan for online payments. Facial recognition technology is an optical technique for biometric recognition of a person's facial digital information features. The principle is to use a scanning device to collect images or video streams containing faces
A semi transparent and semi reflective mirror, also known as a beam splitter, beam splitter, or semi reflective lens. It is an optical component that is coated with a semi reflective film on optical glass to change the ratio of transmission and reflection of the incident light beam. Coating can increase transparency, increase light intensity, and also increase reflection, reducing light intensity. And semi reflective and semi transparent means that this membrane
The infrared cut filter, also known as the IR cut filter in English, is placed between the lens and the sensor. The human eye and CMOS sensor have different responses to light of various wavelengths. The human eye cannot see infrared light, but the sensor can sense near-infrared light, which can cause the sensor to perceive red light too strongly and form color cast. Therefore, an infrared cut-off filter is required to block near-infrared light. Mainly plating IR cu on ultra-thin optical glass
Enzyme linked immunosorbent assay (ELISA) is a specialized instrument used for reading and analyzing the results of enzyme-linked immunosorbent assay (ELISA). ELISA is performed by coupling enzyme catalyzed chromogenic substrates to antigens or antibodies. The reaction results are displayed in color. The concentration of antibodies or antigens in the sample can be determined by the depth of the colorimetric reaction, i.e. the absorbance value. With the development of detection methods, desktop enzyme-linked immunosorbent assay (ELISA) analyzers with multiple detection modes are called multifunctional ELISA analyzers, which can
The CCD filter commonly referred to as "optical low-pass filter" is widely used in various microscopes, such as fluorescence microscopy, laser scanning confocal fluorescence microscopy, confocal microscopy, and internal reflection fluorescence microscopy. In this article, Ruicheng Optoelectronics will introduce two important functions of CCD filters: filtering out infrared rays and adjusting incoming light. Filter out infrared rays: Color CCD can sense infrared rays precisely because it can sense them
Solar simulation technology has been widely applied. In solar photovoltaic science and engineering, aerospace technology space environment simulation, and other solar simulators, the solar simulator filter, as a key optical component, will also develop rapidly. At present, foreign companies mainly produce solar simulators suitable for solar cell testing, such as solar lamps, Xingang, and Technology. The single piece price of its filter is around $1000, which is relatively expensive. Domestic research on solar simulators
At present, coated filters have been widely used in optical instruments, optical communication, optical remote sensing and other fields, becoming an indispensable component of the optical industry. With the development of the first optical industry, the requirements for thin film filters are also increasing. In addition to high precision and reliability, some special functional filters have also emerged. One new development direction is multi-channel bandpass filters, abbreviated as MPF in English. The so-called multi-channel bandpass filter, as the name suggests, refers to a filter that is compatible with
The difference between grating spectrophotometry and prism spectrophotometry for the same light source is as follows: 1. The resulting spectral patterns are different: prism spectrophotometry produces only one set of spectra, while grating spectrophotometry produces multiple sets of spectra. 2. The principle of use is different: Spectral gratings are based on diffraction principles. A spectral grating is based on light of different wavelengths and colors. After passing through the grating, the distribution of bright lines in the diffraction pattern is different. Prisms are composed of the principle of refraction, and prism spectrophotometry involves the separation of light of different colors
Focusing mirror is an optical component that can compress diverging laser beams in terms of angular direction. Due to the large emission surface of optical fibers, they are a diffuse beam of light rather than a collimated or focused spot. Fiber laser focusing mirror can effectively converge the beam at the end of the fiber and control the output beam in a very small area. Depending on the requirements of different applications, two or more focusing lenses can be used, and this type of optical component is called a composite focusing lens. Sometimes non focusing lenses are also used