News
Spherical lenses have a constant curvature from the center to the edge of the lens, while the curvature of non spherical lenses constantly changes from the center to the edge. The curvature of a spherical lens is constant, meaning that the front and rear surfaces of the lens are part of the sphere. Each surface can be convex, concave, or flat. In order to ensure optical performance in photographic lenses, many "aberrations" must be corrected. If only spherical lenses are used for calibration, there will need to be many lens groups that meet the technical requirements of the lenses
Flat field focusing lens, also known as YAG laser field lens, F-theta focusing lens, laser scanning lens, or focusing field lens, is a set of lens optical components, usually consisting of three focusing mirrors and one protective mirror. The protective mirror is coated with anti reflective film on both sides to ensure a transmittance greater than 99%. The main function is to form a uniform focal point on the entire marking plane, which is one of the core accessories of the laser marking machine. Generally speaking, in fiber laser marking machines, when the laser beam is focused and transmitted through
Dear employees, please read the attachment of this notice carefully and follow it accordingly. Wishing you a happy National Day!
Collimators are designed for point light sources, which are common in our daily lives, such as the light emitted by lighting a match or the light bulb of an old-fashioned flashlight. For laser systems, the collimating mirror we are discussing is essentially the laser generated from the energy transmission fiber. The light from the energy fiber is a point light source with a divergence angle. If we place this light source at the focal point of the fiber optic collimator, we will know that from the focusing mirror (actually using the focusing mirror in reverse)
Optical materials are the objects of various optical component processing and are an important component of optical instruments. Optical materials include optical plastics, optical glass, and optical crystals. The main differences between optical glass and ordinary glass are as follows: optical glass contains most of the elements in the periodic table, but with different compositions and contents. Optical glass has physical and chemical uniformity, high transparency, and specific and precise optical constants. Usually, silica, also known as
Dear customers and employees, the 2019 National Day holiday schedule is as follows. Please be informed:
The concept of color filter: A filter that operates in the visible light range is called a color filter. It can reflect or transmit colored light within a certain wavelength range, so it will present different colors. Color filters are commonly used in color related and monochromatic applications, such as color printing, projection displays, LCD displays, photography and video recording, color decoration, etc. At present, the widely used color filters are colored glass absorption filters and reflective optical thin film filters
In optical applications and experiments, an important factor in selecting optical components is whether they can withstand the effects of optical radiation, which is particularly important in high-power laser applications. There are three main types of damage to optical components caused by optical radiation: material chemical bond damage directly caused by extremely high peak power; The second is dielectric breakdown caused by short pulse laser radiation; The third is the thermal effect caused by light absorption. The parameter of the optical component's ability to withstand light radiation under short pulse laser is called laser
Application: Optical spectroscopy instruments such as fluorescence microscopes, police multi band light sources, and bio chip readers. Band: from short wave ultraviolet to near-infrared, i.e. 250nm-1000nm range. Filter types: Generally, the following types of spectral types of hard film interference filters are used: bandpass, short wave pass, long wave pass. Band Pass filters (BP). Bandwidth series: 15nm, 20nm, 25nm
A bandpass filter is also known as an interference filter. It is to eliminate the required stray light, just pass through the required light, such as mixing rice and soybeans together. It is best to pour them all onto the rice screen, sieve them out, and then distinguish them. The function of a bandpass filter is this. According to the spectral curve, light can pass through one or more wavelengths, similar to the Great Wall shape (distance pulse) or Z-type, which is called bandpass, while the "Z" type is usually referred to as long wave or short wave. Bandwidth available