CHANCCTV-OPTICSLENS

The 180-degree fisheye lens means that the angle of view of the fisheye lens can reach or be close to 180 degrees. It is a specially designed ultra-wide-angle lens that can produce an extremely wide field of view. In this article, we will learn about the characteristics and applications of a 180-degree fisheye lens. 1.  The main features of 180 degree fisheye lens Ultra-wide viewing angle Due to its ultra-wide angle, the 180-degree fisheye lens can capture almost the entire field of view. It can capture the vast scenery directly in front of the camera and the environment around the camera, creating a very wide picture. Distortion e ffect The design characteristics of the fisheye lens cause perspective distortion in the images captured by it, showing a distorted effect. This distortion effect can be used to create a unique visual impact and add an artistic touch to your photography. Highlight close-up effect The 180-degree fisheye lens can get very close to the subject and take pho...

A line scan lens is a special lens that is mainly used in line scan cameras. It performs high-speed scanning imaging in a certain dimension. It is different from traditional camera lenses and is usually used in the industrial field. What is the working principle of line scan lens? The working principle of the line scan lens is mainly based on line scan technology. When working, the line scan lens scans the sample surface line by line and collects the light information of each row of pixels to help the line scan lens capture the image of the entire sample instead of capturing the entire image at once. Specifically, the working principle of the line scan lens consists of several steps: Optical imaging:  The light signal of the sample to be scanned is captured by the line-by-line photosensitive elements on the line scanning lens and converted into electrical signals. Line-by-line scanning:  The line-by-line photosensitive element scans from the top to the bottom of the sample at...

The current development of automobile manufacturing technology, the development of intelligent automobile technology, and people's increased requirements for automobile driving safety have all promoted the application of automotive lenses to a certain extent. 1.  The function of automotive lenses The automotive lens is an important part of the car  camera. As a camera device installed on a car, the functions of the automotive lens are mainly reflected in the following aspects: Driving records The automotive   lens can record images during driving and store these images in video format. This is very important for vehicle accident investigation and liability determination, and can also be used to prove traffic violations or the basis for insurance claims. The driving recorder can record time, vehicle speed, driving route and other information, and provide the most direct and accurate evidence for the restoration of the accident through high-definition photography. A utomot...

A new generation of super-zoom telephoto lenses has emerged, making it possible to shoot landscapes, zoom in on distant subjects, and focus close for close-up macro photography. Will a telephoto zoom lens be your next lens? In this article, we'll take a look at telephoto zoom lenses. 1. What is a telephoto zoom lens? A lens with a focal length of 60mm or longer is considered a telephoto lens. If it offers a single focal length, then it's a prime lens, but if it offers a range of focal lengths, all greater than 60mm, then it's a telephoto zoom lens. The most common focal length range for telephoto zoom lenses is in the mid-telephoto region (e.g. 70-200mm, 75-300mm). Of course, you can also find focal lengths in the super-telephoto region (e.g. 200-500mm, 200-600mm). Photographing wildlife with a telephoto lens Having multiple focal lengths allows you to capture the details of your subject clearly without having to actually get closer or change lenses. Using a telephoto zoom...

People who often use optical lenses may know that there are many types of lens mounts, such as C  mount , M12  mount , M7  mount , M2  mount , etc. People also often use M12 lens , M7 lens , M2 lens, etc. to describe the types of these lenses. So, do you know the difference between these lenses? For example, M12 lens and M7 lens are lenses commonly used on cameras. The numbers in the lens represent the thread size of these lenses. For example, the diameter of the M12 lens is 12mm, while the diameter of the M7 lens is 7mm. Generally speaking, whether to choose an M12 lens or an M7 lens in an application should be determined based on specific needs and the equipment used. The lens differences introduced below are also general differences and cannot represent all situations. Let's take a closer look. 1. Difference in focal length range M12 lenses usually have more focal length options, such as 2.8mm, 3.6mm, 6mm, etc., and have a wider range of applications; while the f...

In order to ensure that the lens can provide high-quality images and reliable performance in specific application scenarios, it is necessary to conduct relevant evaluations on the lens. So, what are the evaluation methods for machine vision lenses ? In this article, we will learn how to evaluate machine vision lenses. How t o e valuate m achine v ision l enses What are the evaluation methods for machine vision lenses? The evaluation of machine vision lenses needs to consider many aspects of performance parameters and characteristics, and needs to be carried out under the operation of specialized equipment and professionals to ensure that the evaluation results are correct and effective. The following are the main evaluation methods: 1. Field of view test The field of view of a lens determines the size of the scene that the optical system can see, and can usually be evaluated by measuring the diameter of the image formed by the lens at a specific focal length. 2. Distortion test Distor...

An ultraviolet lens (UV lens)  is a special lens that can convert invisible ultraviolet rays into visible light and then capture it through a camera. Because the lens is special, the corresponding application scenarios are also special, such as crime scene investigation, forensic identification, etc. 1 、 The main function of UV  lens Since UV  lenses are mainly used in some professional fields and are rarely used by ordinary photographers, their main functions are shown in the following aspects: C rime scene investigation (CSI) As a crime scene investigation tool, UV lenses can help investigators uncover hidden evidence such as fingerprints, blood stains, and even certain chemicals. F orensic identification UV lenses can reveal invisible blood stains, liquid contamination and other information and can assist forensic identification. Scientific research and industrial applications In some scientific experiments, UV lenses can help observe the reactions and property chang...

Large field of view (FOV) telecentric lenses are named for their large field of view and distance from the subject. They can provide a wider field of view and are commonly used in telescopes, microscopes, astronomical telescopes and other equipment. Main advantages of large field of view telecentric lenses Large field of view telecentric lenses can provide a wider and clearer field of view, while having the ability to observe objects at long distances. Let’s take a closer look at its advantages: Long-distance observation Due to the telecentric design, the large field of view telecentric lens can be far away from the observed object and is suitable for application scenarios that require observation of distant targets, such as astronomical observation, long-distance surveillance, etc. B road perspective The wide field of view telecentric lens is designed to expand the observation range, allowing users to observe a wider area, thereby obtaining more comprehensive information and observi...