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Filters can be divided into two types: absorption type and interference type. Absorption filters are colored glass that can absorb specific wavelengths of light. The transmittance of absorption type filters is related to the thickness of the glass substrate. The wavelength and bandwidth of absorption filters are not sensitive to the incident angle of the light source, but as the incident angle changes, the thickness of the glass substrate also increases and the transmittance decreases. Interference filter is based on the principle of light interference. If the optical path length of the reflected light from two interfaces
Recently, some customers have inquired about the conversion of OD values after the stacking of filters. Today, we will explain in detail: Firstly, there are two types of filters: 1. The finished product made by using chemical components through photo controlled high-temperature evaporation coating or magnetron sputtering coating is called a dielectric filter (also known as an interference filter), which belongs to the reflective type of filter. 2. Colored glass filters utilize substances (usually heavy metals) doped in glass to specifically absorb specific wavelengths
Some related knowledge about CY5 fluorescent dye. The full English name of CY5 is Cyanine 5, which is a blue pigment fluorescent dye that emits far red fluorescence. It can be linked to genes or proteins through its reaction. Divided into regular cy5 and sulfonated cy5 (Sulfo-cy5). And Cy5 (Suifo-Cyanine5) is a reactive dye used to label peptides, proteins, and oligonucleotides
Infrared optical materials refer to a type of material used in guidance technology and infrared imaging to manufacture filters, lenses, prisms, window panels, fairings, etc. These materials have physical and chemical properties that meet the requirements, namely good infrared transparency and wide projection band. Generally speaking, the transmittance and transmission of infrared optical materials are closely related to the internal structure of the material, especially the chemical bonds and energy level structure. For example, for crystalline materials, the shortwave absorption limit mainly depends on
With the continuous promotion of coating technology, the application fields of optical coating technology are also constantly expanding. The vast majority of optical coating materials used in different fields are rare metals with very small reserves. These rare metals and rare earths are used in small quantities in the industrial field, but they are indispensable and are known as' industrial vitamins'.
Types of Insulated Glass: Insulated glass has special absorption, transmission, and reflection abilities for light and heat. The use of exterior windows and glass curtain walls in buildings can achieve significant energy-saving effects. Commonly used insulation glass includes heat absorbing glass, coated glass, and insulating glass. How does heat absorbing glass work? Heat absorbing glass increases light absorption by adding some metal ions or substances to the glass. The shading coefficient of heat absorbing glass is lower than that of transparent glass, and its shading principle is to absorb light
We know that in the actual focusing process of industrial lenses, when we manually focus on the plane of the object, we gently rotate the focus ring to the left and right. Sometimes we find that the image is still clear within a certain range, and when the clarity of the image exceeds a certain range, the clarity of the image decreases. This involves two terms, depth of field and depth of focus. Ruicheng Optoelectronics will introduce depth of field and depth of field respectively. Before we talk about depth of field, we
To be precise, sensors are the entry point for data collection and the heart of autonomous driving, intelligent devices, and the Internet of Things, with considerable room for development. There are various types and applications of sensors, which can be said to be ubiquitous. For example, there are dozens of acceleration sensors, distance sensors, light sensors, fingerprint recognition sensors, etc. in mobile phones, and hundreds of sensors such as engine speed sensors, vehicle speed sensors, tire pressure sensors, etc. in cars. The number of sensors often represents intelligence
Metal mirrors are widely used in scientific research experiments, national defense applications, daily life, and other applications. Below, we will introduce several categories of commonly used metal mirrors: aluminum plated mirrors: These mirrors have a high reflectivity of over 90% from the ultraviolet band to the infrared band. Compared with other metal materials, optical thin films are relatively stable. Due to the surface layer of the aluminum plated film being coated with aluminum, a layer of aluminum oxide film can be generated in the atmosphere. In the ultraviolet band, MGF and
A dual bandpass filter refers to a single filter that has two bandpass filters. Only one filter is used to capture two specific bands, allowing for the selection of two or more bands to pass through. The dual bandpass filter has high peak transmittance and deep cutoff, effectively suppressing halo and temperature drift, and expanding the application of the filter. Usually used in fields such as security monitoring, machine vision inspection, and intelligent transportation, especially in drone monitoring, dual band filters have significant advantages