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What Are The Characteristics of Optical Lenses for Different Applications?

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With the advancement of AI technology, an increasing number of innovative applications rely on machine vision to function. In this process, the prerequisite for AI to be effective is that smart devices can see and see clearly, and optical lenses play an indispensable and important role in this process. 1.CCTV lenses are facing a technological upgrade Judging from the development trends of video surveillance systems, the technological upgrade path for CCTV lenses is primarily characterized by the following aspects: 1) Reliability and lens cost Security surveillance systems place high demands on the high-temperature resistance of lenses, a factor that is central to their reliability. Since CCTV lenses must operate in harsh weather conditions, the ability to withstand high temperatures is crucial. A high-quality lens must maintain focus and avoid image distortion under high-temperature conditions—typically tested within the 60–70°C range. Meanwhile, the market is increasingly trendin...
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What Should Be Considered When Selecting Industrial Lenses?

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1. Industrial lens mounts There are three mainstream lens mount types: F-mount, C-mount, and CS-mount. The F-mount is a universal mount, generally suitable for lenses with a focal length greater than 25mm; while when the focal length of the objective lens is less than 25mm, due to the small size of the objective lens, a C-mount or CS-mount is used, and some also use an M12 mount. The difference between the C mount and the CS mount : The difference between C-mount and CS-mount interfaces lies in the distance from the lens-camera contact surface to the lens's focal plane (the position where the camera's CCD image sensor is located): this distance is 17.53 mm for C-mount and 12.5 mm for CS-mount. C- mount lenses are compatible with C-mount cameras, and CS-mount lenses are compatible with CS-mount cameras. A C-mount lens can be used with a CS-mount camera by adding a 5mm C/CS adapter ring. However, a CS-mount lens cannot be used with a C-mount camera. Industrial lens mounts 2. Ba...
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Imaging Modes And Applications of Fisheye Lenses

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A fisheye lens is an extreme wide-angle lens that introduces barrel distortion to "compress and deform" the physical space, thereby obtaining an ultra-wide-angle image with a field of view of 180 to 270 degrees. Although there are large differences between the object and the image, the resolution is not affected, and the one-to-one correspondence between the object point and the image point can be guaranteed, so that a clear image over a large area can be achieved. To achieve the widest possible field of view, the front element of this type of lens protrudes forward in a parabolic shape—resembling a fish's eye—hence the name "fisheye lens." Most fisheye lenses are fixed focus lenses, with only a very small number being varifocal lenses. Due to their ultra-wide-angle characteristics, fisheye lenses play a significant role in fields such as astronomy, meteorology, forest fire prevention, and national defense. 1. The imaging principle of fisheye lenses The visua...
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How Does The Focal Length of A CCTV Lens Affect The Image?

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Focal length is one of the core parameters of CCTV lense s, which essentially determines the field of view and the clarity of details in the image. Simply put, a shorter focal length brings the image closer while providing a wider field of view, whereas a longer focal length captures more distant scenes but results in a narrower field of view. 1. The impact of the focal length of a CCTV lens on the image Overall, the focal length of a CCTV lens affects the image in the following key ways: 1) Field of view The field of view is the range of the visible image. A shorter focal length means a wider field of view, covering a larger area, which is suitable for small spaces or scenarios that require panoramic monitoring. A longer focal length means a narrower field of view, which can zoom in on the image and see details of distant objects, but the coverage area is smaller. 2) Monitoring distance and detail clarity At a fixed monitoring distance, a shorter focal length provides a wider field...
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Main Parameters And Application Areas of Industrial Microscope Lenses

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As a core component of industrial microscopes, industrial microscope lenses are also key parts of machine vision inspection systems and precision measuring equipment. They are mainly used for close-range, high-precision observation and inspection of workpieces, and their key parameters directly determine image quality and applicable scenarios. In this article, we will learn about the relevant knowledge of industrial microscope lenses. 1. Main parameters of industrial microscope lenses The main function of industrial microscope lenses is to magnify tiny objects, making their details clearly visible for easy observation, analysis, and measurement. When selecting and applying them, the following key parameters should be considered: (1) Magnification Magnification refers to the number of times an image is magnified relative to the actual object, directly affecting the lens's field of view and detail resolution. Common magnification ranges from 0.5× to 200×, with 2×, 4×, 5×, 10×, and 2...
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