Sara J. Schechner claimed that surviving glassware from the 15th and 16th centuries is far too imperfect to have been used to create realistic images, while "even thinking about projecting images was alien to the contemporary conceptual frame of mind."[16] Vincent Ilardi, a historian of Renaissance optical glass, subsequently argued against Schechner's conclusions based on surviving glassware, suggesting that the present condition of Renaissance glassware is not likely to reflect the optical...
Researchers at the University of Colorado have developed a lens type (and a steering prism) capable of electrofocusing without moving parts with a spectral passband from 400 to 5000 nanometers and have experimentally demonstrated at wavelengths of 588, 1550 and 3000 nm . The lens is based on the electrowetting technique, where changing the voltage changes the wettability of the liquid lens to change its contact angle, which in turn changes its shape. The concept of electrowetting is not new in...
On June 15, JACS published an article titled Na2ZnGe2S6: a new infrared nonlinear optical material with good balance between large second-harmonic generation response, published by the team of Researcher Pan Shi-Lie, a new photoelectric functional material laboratory of Xinjiang Institute of Physics and Chemistry, Chinese Academy of Sciences and high laser damage threshold. Pan Shi-li group master's graduate student Li Guangmao as the first author. The development of infrared solid-state...
Researchers at the University of Colorado have developed a lens type (and a steering prism) capable of electrofocusing without moving parts with a spectral passband from 400 to 5000 nanometers and have experimentally demonstrated at wavelengths of 588, 1550 and 3000 nm . The lens is based on the electrowetting technique, where changing the voltage changes the wettability of the liquid lens to change its contact angle, which in turn changes its shape. The concept of electrowetting is not new in...
In recent years, the infrared non-linear optical crystal has been developed as a key frequency conversion device for infrared laser output. However, the commercialized infrared nonlinear optical crystals affect their applications due to problems such as low laser damage threshold and strong two-photon absorption. Based on this, to explore a new type of excellent infrared nonlinear optical crystal material has become a research focus, but also requires it to have a wide range of infrared...
Heraeus Noblelight integrates decades of professional infrared emitter manufacturing technology and service experience to meet the processing requirements of many industrial materials. Heraeus Infrared Radiator uses targeted infrared radiation heating methods, with controllability, precision, high efficiency, environmental protection and space-saving other heating methods unparalleled superiority. Its unique transparent quartz neodymium tube structure has extraordinary mechanical strength, and...
China Instrument Network Instrument R&D Recently, the research group of Jianghaihe Researcher of the Medical Physics and Technology Center of the Hefei Institute of Physical Science, Chinese Academy of Sciences has made progress in the research of wide-tuned, narrow-spectrum mid-infrared light parameters. The relevant research results are published in the international optical journals. Optics Express (Optics express 25.25 (2017): 31810-31815). The 3-5 μm mid-infrared laser has a wide range...
A. The distinction between positive core and loose core Whether the wick is used with a positive core or a bulk core determines the quality of infrared lamps, the price between the two is also very different, and even a difference of more than five times, which is an important reason for the price of infrared lamps in the market such as 369 and 1989. The camera is most sensitive to the luminescence spectrum at 850 nanometers of the lamp, that is, a red burst infrared tube. The infrared tube of...
With the development of the security industry, 24-hour uninterrupted surveillance has become increasingly demanding for night vision. Infrared technology has experienced development in different periods and has been widely used in the surveillance of night vision. In the development of the night vision field, from the first generation of traditional LED infrared, array infrared, laser infrared, and infrared thermal imagers to the world’s third-generation infrared technology, the field of...
Infrared detection (infrared radiation detection) principle and infrared thermometer The principle of infrared detection (infrared radiation detection) The essence of infrared detection (infrared radiation detection) in the non-destructive testing technology method is to use non-contact infrared temperature recording method by utilizing the characteristics of infrared radiation of the object. Infrared is an electromagnetic wave with the same nature as radio waves and visible light. The...
At present, China's security industry is moving from the start-up period to the development period, the industrial chain has basically been formed, and the management chain is also being established. As the market demand continues to increase, the security industry will usher in a broader space for development. Infrared monitoring is an important application in the field of security monitoring and is rapidly developing under the tide of the Internet of Things. Infrared camera installation...
(1) The infrared laser beam irradiation distance of the infrared camera is independent of the number of wafers. Infrared camera spot array infrared lamps use a special "wafer structure", "crystal growth process", "encapsulation technology", and the infrared camera's infrared lamp brightness standard is completely different. When the infrared camera was just born, in order to identify and monitor the distance 50 meters away, it would take 60 24-mil infrared...
In recent years, the Chinese government has accelerated the development of safe cities, the scale of the security market has continued to expand, and the demand for security products has also continued to increase. Its application has also led various industries with the advancement of science and technology and has opened up a whole new journey. The following is a new security alarm manufacturers for everyone to introduce in detail, the current use of the industry's most widely used...
Optical sensor I have a new statement An optical sensor is a sensor that measures on the basis of optical principles. It has many advantages such as non-contact and non-destructive measurement, almost no interference, high-speed transmission, telemetry, and remote control. Mainly include optical measuring instruments, laser interferometers, gratings, encoders, optical fiber optical sensors and instruments. It is primarily designed to detect the presence of objects, or to perform various...
Infrared alarms are divided into two types: active and passive. The active infrared alarm is an alarm device that actively emits infrared rays. When the infrared beam hits an obstacle, it will bounce back and be received by the probe of the alarm device. If the probe detects that the infrared is stationary, that is, it continuously emits red lines and continues to bounce, the alarm will not alarm. When a moving object violates this invisible red line, the probe will detect an abnormality and an...
Absorption, reflection, and transmission occur when far-infrared radiation is radiated to an object. However, not all molecules can absorb far-infrared radiation, and only those polar molecules that show electricity can work. Water, organic substances, and high molecular substances have a strong ability to absorb far-infrared rays. When these substances absorb the far-infrared radiation energy and make its molecules, the frequency of natural vibrations and rotations of atoms coincide with the...
The nonlinear optical crystal is an important photoelectric information functional material and plays an increasingly important role in modern technologies such as frequency conversion, optical parametric oscillation, electro-optic modulation and communication. At present, non-linear optical crystals capable of producing visible and ultraviolet light, such as KTiOPO4 (KTP), LiB3O5 (LBO) and CsLiB6O10 (CLBO), have basically satisfied practical applications. In the infrared band, although there...
The instability of the detection system of infrared carbon-sulfur analyzer directly affects the accuracy of the analysis results of the tested substances. Based on the structural characteristics of infrared carbon-sulfur analyzer, combined with its working principle, it analyzes and discusses the unstable factors from several parts such as working power source, infrared light source, chopper motor, infrared detector, preamplifier and A/D converter board. , And put forward the ideas to solve the...
Introduction Thermal infrared life detector is one of life detectors. Thermal infrared life detector with image display and night vision function, mainly through the perception of temperature differences to determine different targets, so it can work in the dark environment as usual, the detection depth of up to tens of meters, either remote control, but also Wire control, easy to carry and use, known as "Nighthawk." All objects emit infrared radiation. The amount of radiation is...
Infrared straw gasifier I don't need to worry about everyday life. I am the best in terms of energy saving and environmental protection. With the current rising prices of water, electricity, coal, gas, and energy, people have to find new energy and new products to save energy and save money. . The Jinan Wisdom Star New Technology Research Institute has recently developed a biomass straw gasifier that effectively converts crop straws, agricultural and forestry waste, etc. into gas. It is...
Infrared touch screen full name: infrared technology touch screen (Infrared Touch Screen Technology), by the integrated circuit in the touch screen frame, infrared emission and receiving light-emitting diode components, in the screen surface, the formation of X, Y axis infrared cross detection network, any The opaque objects block the transmission and reception of the infrared LED tube, and are monitored by the IC master control IC, and the computation data is fed back to the computer. The...
The optical platform is an experimental platform that provides a horizontal, stable table top for placement of various optical components. The general platform needs to carry out vibration isolation and other measures to ensure that it is not interfered by external factors, so that scientific experiments can be conducted normally. The basic components of a standard optical table include: (1) a top plate, (2) a bottom plate, (3) a side finishing surface, (4) a side plate, (5) a honeycomb core,...
The English name of the optical zoom is Optical Zoom. The digital camera relies on the optical lens structure for zooming. The digital camera's optical zoom mode is similar to that of a traditional 35mm camera. It is through the movement of the lens to zoom in and zoom out the scene that needs to be shot. The larger the optical zoom factor, the farther the scene can be shot. When buying a digital camera, many users will ask, what is the digital zoom, what is the optical zoom, below, we use...
The infrared interface is the configuration standard for a new generation of mobile phones. It supports data exchange between mobile phones and computers and other digital devices. Infrared communication has the characteristics of low cost, convenient connection, simple and easy to use, and compact structure, so it has been widely used in small mobile devices. Through the infrared interface, all types of mobile devices can freely exchange data. Infrared is an electromagnetic wave having a...
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