Jiangxi Xuyang Technology Co., Ltd
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• Name: Pressure isolation ring<br>Parameters: minimum aperture 30 1, maximum outer diameter 30 150, thinnest thickness 0.23<br>• Tolerance: 0.02 inner and outer diameter tolerance, minimum 0.01 air gap height<br>Processing difficulty: the tool with too small aperture is difficult to grind, the outer diameter is too large and easy to deform, the thickness is too thin and easy to deform, and it is difficult to hang on oxidation.
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• Name: Industrial Lens Assembly<br>Parameters: outer diameter ∮ 38.5, inner hole ∮ 10.5<br>• Tolerance: 0.015<br>Processing difficulty: the three components are matched, the multi-head thread and the single-head thread are connected, the matching position of the three components is required, and the tightness of the thread matching requires smooth screwing and no gap.
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• Name: Interface<br>Parameters: outer diameter ∮ 46, inner hole ∮ 18<br>• Tolerance: 0.03<br>Processing difficulty: surface chrome plating, the appearance is difficult to guarantee
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• Name: Lens barrel<br>Parameters: outer diameter 30 20, inner hole 30 5, length 60<br>• Tolerance: 0.02<br>• Processing difficulty: thin and long parts
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Popular Science: Concept and Classification of Industrial Lens
Optical lens is generally referred to as camera lens or photographic lens, referred to as the lens, its function is optical imaging. The lens is an important component of the machine vision system, which plays a key role in imaging quality. It has an impact on several main indicators of imaging quality, including: resolution, contrast, depth of field and various aberrations. There are not only a wide variety of lenses, but also a very large difference in quality, but the general user often does not pay enough attention to the choice of lens when designing the system, which leads to the failure of the ideal image and even the failure of the system development. The purpose of this paper is to summarize the relationship between various factors by introducing the classification and main parameters of various common lenses, so that readers can master the skills of lens selection in machine vision system.
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Optical Lens Industry Overview
Optical lens is a key component of optical imaging system in electronic equipment. Optical lens is also called camera lens or photographic lens, referred to as the lens, its function is optical imaging. From the structural point of view, the optical lens is usually composed of precision hardware, plastic parts, lenses, apertures, drive motors, sensors and other opto-mechanical and electrical devices and lens barrels, and the principle of optical refraction is used to focus the scene that needs to be photographed on the imaging surface (such as film or image sensor chip) to achieve the final imaging effect. Optical lens is an essential component in the optical imaging system, which directly affects the quality of the image, affects the realization and effect of the algorithm, and has been the key component of the optical imaging system in many electronic devices such as security cameras, mobile phones, vehicle imaging and so on.
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The core optical components of the car camera
The on-board camera is known as the "eye of automatic driving" and is the core sensing equipment in the field of ADAS system and automobile automatic driving. The acquisition function of image information is realized mainly through the lens and image sensor, which can realize 360 ° visual perception and make up for the defects of radar in object recognition. It is the sensor closest to human vision.
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In addition to the focal length, the aperture is another main parameter to distinguish the difference between the lens, which determines the amount of light in the lens. The size of the aperture directly affects the shutter speed and depth of field, so when shooting night scenes and portrait, when the focal length is equal, we prefer to use a large aperture lens.
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