1. Briefly describe the composition of the fiber. * The fiber consists of two basic parts: a core and a cladding, a coating made of a transparent optical material. 2. What are the basic parameters describing the transmission characteristics of optical fiber lines? * Includes loss, dispersion, bandwidth, cutoff wavelength, mode field diameter, etc. 3. What is the cause of the fiber attenuation? * Attenuation of an optical fiber is the reduction in optical power between two cross sections of an...
Optical fiber is a kind of fine, soft solid glass material, which consists of three parts: core, cladding, and coating layer. It can be used as a light transmission tool. The core of the optical fiber is mainly made of high-purity silicon dioxide (SiO2) and doped with a small amount of dopants to increase the optical refractive index n1 of the core; the cladding is also high-purity dioxide (SiO2), and is also doped with some The dopants, to reduce the refractive index of the cladding n2, n1>...
Researchers from Osaka University have developed a non-linear optical crystal chip (NLOC) that combines terahertz light waves with microfluidic devices and takes full advantage of the close proximity of the terahertz source and the solution of the analyte in the microchannel. . Their research was published in the most recent issue of APL Photonics. “Using this technology, even if the sample is less than one nanoliter, we can detect the concentration of several molecules of solution,” said...
Cool music does not stand in the field of smart micro-investment, relying on the tenth day, the product quality and user experience in the first ingenuity. It took less than a month to go public, and Cool Music regards the R4 as a dragon, rolling in the sea of the smart micro-investment industry and turning it over! In addition to the 1920*1080P physical resolution (rectangular pixels) and the 880 ANSI clear highlight experience, there is also a stunning effect of Cora's unmatched optical...
The installation of video optical transceivers is a prerequisite for the use of optical transceivers, so the installation process is more important. With more and more applications of video optical transceivers, customers have encountered many problems in the installation of video optical transceivers. This article describes the optical and data interface problems in the optical transceiver installation process. First, on the optical path of the video optical transceiver installation In the...
The dramatic increase in demand for the video optical transceiver market has brought new demands for fiber bandwidth capacity and device management. In order to meet the requirements of such changes, the types of optical transceiver modules, which are one of the core devices, have also become more and more numerous. The requirements have become higher and higher, and the complexity has also grown at an alarming rate. However, as a general trend, optical modules are moving toward...
ROHM has developed a surface-mount LED "CSL0701/0801 Series" with an aspherical lens for use with autofocus-assist sources such as digital cameras and camera phones. The new product realizes the industry's smallest 2924 size (2.9×2.4mm) through ROHM's self-developed component processing technology and optical design. Compared with the original product, the package area is reduced by 65% and the height is reduced by 30%. The LEDs developed this time use aspherical lenses, miniaturization of...
The world’s leading diversified chemical company Saudi Basic Industries Corporation (SABIC) recently introduced a major breakthrough in the production process of infrared optical sensor lenses. The lens uses SABIC’s EXTEM thermoplastic polyimide (TPI) resin, which can be used for intelligence. Applications such as proximity sensors and gesture recognition for mobile phones and other electronic products. Swiss molding company SOPROD SA uses SABIC's high-performance material with high infrared...
Power LEDs are used in the field of lighting, and secondary optical lenses are used to achieve good light distribution. The lenses of various properties designed to meet different effects are mostly optical grade acrylic (PMMA). Its light transmittance is about 92%. You may have to say, yeah, the material transmittance is 92%. Why do you say 99%? The guest officer is in a hurry, listen to me: There are two main reasons for causing light loss: 1. Reflection loss at the transmission interface 2....
Every week brings you interesting and unexpected VR/AR/AI information Let you quickly understand these news that can change the future technology life Bring more money after the meal! What's new and interesting in the VR world this week? What are you looking for? Harvard University develops miniature lenses! Breakthrough design for VR heads We usually use cameras and optical instruments and other equipment can not be separated from the focus, but the focus of the entire visible spectrum is very...
This test is rated as 4404 and 4477 products of German Vision: Brand: German Vision model: 4404 Size: width 166* height 120* thickness 57mm Weight: 650g Specifications: 8 * 30, both 8 times, objective lens = 30mm Field of view: 120M Prism: Paul Prism System Brightness Index: 14.1 Low light coefficient: 15.5 Waterproof rating: Class A waterproof focusing system: auto focus Brand: German Vision model: 4477 Size: width 116* height 120* thickness 46mm Weight: 302g Specifications: 10 * 26, both 10...
On February 26th, the Ministry of Commerce and Industry of India made an anti-dumping sunset review of plastic optical lenses originating in China. As the domestic industry did not submit relevant information within the prescribed time limit, the investigation of the case was terminated and the origin was cancelled. Anti-dumping measures for plastic optical lenses in China. The customs code of the product involved is 90015000. In August 2002, India initiated an anti-dumping investigation on...
Introduction: During the shooting of daily drones, many users will find a problem. When our drones are used for a period of time, the images taken are not clear enough to have a vague feeling. In fact, this phenomenon is the result of the degradation of the optical film performance of the drone camera lens. In recent years, the development of the drone market is changing with each passing day, and more and more people like to buy drones as a tourist to go out and play outdoors, so that more...
A customer from Nicaragua wanna purchase 3 Industrial Chiller CW-5300 and need this chiller for use in an optical lenses polishing machine which it works with water and it need to cool the water at 65°F more or less by 8 hours by day.There is no target time, it can be reach at 1-2 hour this is not very important. Then yes CW-5300BH fits. As the customer wants door to door delivery, we can send by economical DHL express but in this way (express parcel), the refrigerant inside the compressor must...
[China Glass Network] At present, optical experts have analyzed that the types of spectacle lenses are roughly divided into five types: anti-reflective protective lenses, colored lenses, painted lenses, polarized lenses and color-changing lenses. 1. Anti-reflective protective lens This kind of spectacle lens is coated with a thin layer of magnesium fluoride to prevent strong light reflection, so that you can see things more clearly and not interfere with strong light. To check if your glasses...
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July 08, 2021
