A password lock, also known as a combination lock, is a type of locking mechanism that requires a sequence of numbers, symbols, or letters to unlock. Unlike traditional key-based locks, these devices rely on a user-defined code to secure doors, cabinets, or other access points. The term "password" in this context can be a bit misleading, as the codes are typically just sequences rather than actual passwords in the traditional sense.
Most password locks feature a dial with numbered wheels or a single rotating dial that controls internal mechanisms. When the correct sequence is entered, it aligns the internal components—such as discs or cams—to allow the lock to open. Some models use multiple dials, each with its own set of numbers, while others may have a single dial that moves through several positions to complete the code.
These types of locks are commonly used in schools, gyms, and offices for securing lockers and storage units. They are also popular in residential settings for securing gates, sheds, or even high-security areas. One of the main advantages of password locks is that they eliminate the need for physical keys, reducing the risk of lost or stolen keys. However, they can be vulnerable to hacking or brute-force attacks if the code is simple or easily guessed.
To enhance security, many modern password locks come with additional features such as time delays, tamper alerts, or electronic keypads. These improvements make them more reliable and harder to bypass. Whether you're looking for a basic mechanical lock or a high-tech digital model, understanding how password locks work can help you choose the right one for your needs.
Windows are desiged for use in optical systems to separate two enviroments while passing a particular spectral range between them.Applications include laser set-ups (e.g.at Brewster's angle),emitter,detector protection devices, such as in sepctrophotometers and imaging systems.
China Star Optics offers all types of windows made from different materials. Such as N-BK7, Fused silica, sapphire,CaF2, Silicon, Borofloat, high borosilicate glass and other optical glass supplied by Schott and Chinese CDGM are available upon request. Windows at shape of round,quadrate, triangular or other polygonal are also available upon request.In addition, we provide a variety of single layer or multiplayer anti-reflecting coating,HR,PR coatings on Optical Windows.
Specification of our optical windows as follow:
*Material:high borosilicate glass, BK7,UV-grade fused silica (JGS1) or other optical crystals materials
*Length tolerance:+/-0.01
*Width tolerance:+/-0.01
*Center thickness tolerance:0.005mm
*Surface quality:80-50 to 10-5 Scratch/Dig
*Surface flatness:<lambda to lambda/20
*Parallelism<=1min -- 2sec
*Clear Apenture:80% -- 100%
Infrared Window,Zinc Selenide Windows,Znse Wedged Window,Zinc Selenide Laser Window
China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com