News
The main optical components of a telescope are the objective lens, eyepiece, and prism. Coatings can reduce light loss and reflection caused by reflection, and improve the transmission rate and contrast of light. A limiting factor for binoculars that reflect light. When light hits ordinary glass, 4% of the light is reflected from the glass surface (the glass itself absorbs some of the light because it passes through). Telescopes have an average of 10-16 glass surfaces, and their light loss may be 50% or more of the light initially incident on the objective lens,
Metal mirrors and metal dielectric mirrors are two different types of mirror filters with different film layer combinations. Let's explain them separately below. What are the advantages of metal mirrors: 1. The high reflection band of metal mirrors is so wide that it can cover almost all optical frequency ranges. However, it should be noted that each type of metal reflector with different thin film types has its own best reflection band. 2. The adhesion ability between the metal film of different metal mirrors and the filter material varies. For example,
In the 1950s, scientists discovered that sunlight with a wavelength less than 285 nm was almost completely absorbed by the ozone layer as it penetrated the atmosphere to sea level. This made it almost impossible to detect sunlight in this wavelength range from sea level to an altitude of 20 kilometers. Therefore, this wavelength range is called the sun blind ultraviolet band. By utilizing the characteristics of ozone in the Earth's atmosphere, solar blind filters have strong absorption of natural light in the 200-280nm wavelength range
Laser welding machines belong to the fourth category of laser equipment. Direct exposure to strong laser radiation can cause serious harm to human skin and even blindness. Therefore, debugging personnel must have knowledge of laser safety protection and wear specialized laser protective glasses with corresponding laser wavelengths. Today, Ruicheng Optoelectronics will explain how to maintain and care for laser welding machine reflectors. Note: The adjustment of the laser must be carried out by personnel who have received specialized training, otherwise other components on the optical path may be affected
Optical lenses are usually spherical optical components made of glass or plastic. The lenses produced by Ruicheng Optoelectronics are mainly composed of convex lenses, concave lenses, plano convex mirrors, plano concave mirrors, etc. Optical lenses are implemented in optical systems using the principle of light refraction, including light focusing, light dispersion, and optical imaging; Optical lenses are designed to consist of multiple lenses, which can optimize color correction and correct spherical aberration. This optical lens can be widely used in various safety, automotive, digital cameras, lasers, and optical applications
Filter is widely used in fluorescence microscopes, so many filter designs are determined according to the requirements of microscope manufacturers. Users can place orders based on the model of the sample in use and choose the same or similar filter model from the standard models. Fluorescence filters are widely used in high-precision precision optical equipment, laser processing equipment, measuring instruments, as well as medical beauty, photography equipment, machine vision and other fields. There is no standard size for filters. However, compared to
As an optical component, a filter is a tool used to select the desired radiation band. It is made by adding special dyes to plastic or glass sheets, and its main feature is that its size can be made quite large. Thin film filter, usually passing long wavelength light, is commonly used as an infrared high transmittance filter. The latter is a low order, multi-stage series solid interferometer formed by vacuum coating a metal dielectric film with high or low refractive index or a certain thickness of all dielectric film on a certain substrate
Infrared filters are mainly used in infrared communication products, security monitoring fields, night vision products, infrared receivers, infrared detectors, infrared sensing, etc. There are two types of materials for infrared filters, one is coated with optical glass, and the other is made of PC or PMMA materials, with a black appearance color. This type of infrared filter made of PC and PMMA material can effectively cut off visible light and transmit infrared light. The cut-off rate of visible light range is related to the transmittance and thickness of infrared light
A beam splitter is a special optical processing substrate coated with high-precision optical media to ensure no ghosting, high smoothness, no black spots or stray light in imaging. It is used in optoelectronic sensing devices such as optical instruments, biochemical and medical instruments. A beam splitter is actually a beam splitter with sharp edges. It is coated with a special film on the surface, which allows the incident light to reflect half and transmit half, thus splitting a beam of light into a reflected beam and a transmitted beam, forming two beams. The beam splitter partially reflects the incident light
In evaporative deposition coating technology, the source material in the vacuum chamber is heated or evaporated by an electron beam, and the vapor condenses on the optical surface. During the evaporation process, optical coatings with uniform thickness can be obtained by precisely controlling heating, vacuum pressure, substrate positioning, and rotation. Evaporation is a relatively mild technology that can cause the coating to become loose or porous. This loose coating has water absorption, which changes the effective refractive index of the film, resulting in a decrease in performance. leave