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HD Monitoring Lens Has Become An Inevitable

Currently HD lens market trend is gradually strengthened, HD lens is playing an increasingly important role in high-definition surveillance system. From megapixels ip camera to 2 million, 3 million or even 5 million pixel high-definition the megapixel camera has been endless. With the security monitoring business research and development efforts on high-definition lenses growing wider, surveillance camera in clarity, transparency, color reproduction and other aspects of better performance. Compared to ordinary analog camera lens, imaging results megapixels lens is very different. In practical applications, such as license plate recognition, face recognition are high pixel camera, to obtain high-resolution images and presents some of the necessary details. To traffic monitoring, for example, the use of HD megapixels camera, not only can capture license plate information, and even the driver's face shape can also be seen clearly. Once a hit and run incident, high-definition images to help police quickly locked the suspect. In addition, high-definition camera can cover more space, it can replace multiple traditional analog cameras, saving initial construction costs while also reducing ongoing maintenance costs. When the monitor of the same size scenes, HD lens can zoom in again, richer detail. HD IP cameras with lenses can also carry out rich image processing, such as facial recognition, pupil recognition, license plate recognition. HD monitor with high-definition, high-resolution and other characteristics, but also to ensure dynamic image quality in a variety of lighting conditions, for intelligent video analysis to provide technical support, you can achieve high-quality security monitoring. And consistent with the goal of surveillance cameras, the lens in addition to the need to constantly improve the quality of the product, the manufacturer regardless of the development of any new technology, its only one goal: to enhance the image sharpness, improve the image quality. Can be seen from the development of megapixels camera this year, and in constantly stimulate demand for higher pixel density and higher light transmittance lens lens market demand, the popular class from megapixels HD lens has not avoided. Today, the lens market corresponding 2/3 "CCD up to 500 million pixels, 1/3" CCD and 1 / 2.5 "CMOS up to 3 million pixel camera products have been endless choice of HD lenses are very rich product from major manufacturers of performance, HD megapixel camera has gradually begun to spread, the industry is also generally agreed that the current megapixels HD lenses have been widely used for road monitoring and bayonet capture, part of the safe City and banking projects to proceed HD lens applications. overall, the HD lens market share over the past year has accelerated the trend, user feedback is also quite good. From the lens in terms of development, mainly in the following trends: aspherical lens is the current trend, the use of aspheric can do a larger aperture, better night vision, so more and more in the new lens manufacturers are introduction of aspherical lens technology. IP cameras have rich image algorithm, so the details of the imaging lens increasingly demanding. It's not just the lens from one million to 10 million pixels pixels to enhance, but also need to improve the pixel edge, to ensure the details are clear anywhere, and can withstand enlarge. Two important pointer definition including resolution and contrast. Resolution refers to the ability of the lens reproduce the scene details of the subject, the higher the resolution, the picture is more clear and delicate;contrast refers to the contrast detail reproduction scene being shot, the brightness level of ability, the higher the contrast, the picture scene clean-cut, sharp edges , the level of rich, strong texture, tone uncertain. High and low contrast resolution lens, the image is not clear outline, contrast gray, dull tone, giving the impression but not clear. Some domestic lens is the case, and SD lenses without much difference in feel. And some of the lens resolution is not high, but the big contrast, but this lens gives a good feeling. So the contrast and resolution have reached a certain height, the real ideal Megapixel lens. Large-caliber small: large diameter refers to the amount of light through the lens, mainly in the brightness of the screen, compared to the small-caliber shot in the dark, and night mode environment have better performance. Miniaturization means compact lens structure can be applied to product installation and reduce the volume of different products. Compared to foreign megapixels surveillance camera, its aspheric technology is mature, often with a lens, the focal length of the foot, large caliber, small structures, high definition. Most domestic manufacturers are exploring the lens aspheric technology applied for the early maturity HD surveillance applications, compete with foreign manufacturers. Parfocality night: In the intelligent transportation industry, increasing the target surface imager, using 1 "CMOS products, more and more of these products relative to 2/3" CMOS, has better low-light effect. Currently more products parfocal do not have night vision function, you need to rely on flash fill light, there are many countries do not allow the use of the flash, the country will also have a lot of places have begun to discuss the program without flash. Stray light elimination: stray light and stray light including ghost. Stray light reflective means of mechanical parts caused by stray light, etc. of the rainbow, the stray light through the lens and the inner wall of the light extinction processes to eliminate the spacer. Refers to multiple reflections of light like a ghost in the secondary image of the screen, similar to the bright object like a ghost outline between the lens inside the lens, can not be completely eliminated, only through the multilayer antireflection coating film to try to weaken. An overall performance superior HD millions surveillance camera, in the elimination of stray light should have a good performance to match its reputation of millions of high-definition surveillance camera.


Original article published on amazines.com

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