High-Definition

The clarity of the two important indicators, including resolution and contrast. Resolution refers to the lens reproduces the details of the scenery and being proactive ability, the higher the resolution, the screen is crisp and clear; contrast is low-contrast detail reproduce the photo features, the ability of the shades of color, the higher the contrast, sharp screen scene, with sharp edges the level of rich, strong texture, tone uncertain. The high resolution and low contrast lens, the image contours are not clear contrast between the gray tone flat, giving the impression but not clear. Many domestic lens is also a large number of manufacturers promotion of millions of high-definition lens, and SD lens feel much different reasons for the disappointing market. Some lens resolution is not high, but the contrast, but gives a good feel of this lens. So the contrast and resolution reaches a certain height, is the real ideal of millions of HD lenses such [url="http://www.tenvis.com/h264-ip-camera-c-77.html"]cheap H.264 ip camera[/url].


Miniaturization of large-caliber

The large diameter refers to the amount of light through the lens, mainly on the brightness of the screen, compared to the small-diameter lens is dark and night mode quality. Miniaturization the lens compact structure can be applied to different product installation and reduce the volume of products. Megapixels compared to foreign surveillance lens, aspherical technology is mature, often with a lens, the focal length of foot, large diameter, a small structure, high definition. Most of the major domestic lens manufacturers slowly exploring aspheric technology for the early mature megapixels applied to monitor the development of new products, the lens, to competing with foreign manufacturers.



Stray light to eliminate

Stray light stray light and ghost images. The stray light means the mechanical components of the reflective rainbow caused by stray light, stray light can light processing through the the lens inner wall and the elimination of the spacer perfect to eliminate. Ghost like multiple reflections of light between the internal lens in the lens in the secondary screen imaging, ghost like similar bright object contours, can not be completely eliminated, and only through the plating multilayer antireflection coating to minimize. Million high-definition monitor lens a superior overall performance, in stray light elimination on should have excellent performance to performance quality in high ambient light conditions, matching millions of high-definition surveillance camera laudatory.

Today, 2/3 "CCD up to 500 million pixels Lens 1/3" CCD 1/2.5 "CMOS up to 300 million pixels corresponding lens market has been an endless stream of very rich, HD lenses to choose from . in not mature environment aspherical, lens manufacturers to maintain the attitude of the research and development of the technology continues to improve aspherical full use to play the optical glass of high-refractive-index low-dispersion coefficient and ED (low refractive index and high dispersion coefficient) ability to correct various aberrations of the lens, improve lens performance stability and cost-effective, and combined the heat sealing suppress lens packaging process applied to million of its mature HD series products to make them more HD miniaturization.