In terms of lens product technology, you may only know the lens aperture, focusing, zoom, shockproof, infrared filter and servo motor of electric lens, but you may not know too much about some small technologies inside the lens. These technologies seem insignificant, and few people talk about them together with monitoring applications. However, don't underestimate these technologies. These technical parts are often the key to affecting the quality of the lens itself.

1. Aspherical lens structures on lens technology.

This is the most required and pursued effect demand of HD monitoring at present. Its function mainly lies in the low refraction effect under high transmittance, so that the central focus of all transmission lenses can be imaged at the same point after refraction. At the same time, it can also reduce and reduce the barrel (convex) or needle pad (concave) deformation of the image, so as to make the image sharper. This kind of lens is usually used to the wide-angle to ultra wide-angle or fish eye lens with low focal length.

2. Low dispersion lens (LD, LowDispersion or UD, Ultralow Dispersion) technology

This lens technology is usually used to control the color difference of the lens and improve the color restoration effect of the photo. Using this technology can stabilize the spectrum generated after light refraction, that is, make the color difference of color light after refraction through the lens small, and the imaging color is almost the same as the original color. LD is usually used more in monitoring, UD ultra-low dispersion is used in DSC Digital camera or DV application, and Japanese products are used more in this part.

3. Coating technology of lens

This technology can counteract the reflected light of the lens on the lens. Its function is to eliminate the ghost, glare and the spot produced by resisting catadioptric reflection. At the same time, it can reduce the reflectivity of the lens and increase the light input on the lens. This technology is used in surveillance cameras Users probably only know whether the lens coating is available or not. In fact, the lens coating has many levels and differences. The lens coating can be divided into nano coating, integrated coating, subwavelength coating, multicoating, transparent coating, bbar multilayer coating, HFT coating and other types, which may not be used in monitoring, At present, there are many monitoring lenses in the form of bbar and nano, and the rest are mostly used for DSC or SLR cameras.

4. High light transmittance material lens technology (fluorite FL)

This kind of lens technology is often used in telescopic lens and high magnification telescopic lens on advanced cameras. It is also called fluorite chip lens. It is characterized by very low refractive index and LD dispersion, so that the lens will not have the problem of lens reflection dispersion when taking the long-range closer. This is an easy technical application in Japanese inching lens high-end products.

5. High refractive index lens (HRI) technology

This kind of lens is special. It uses the correction technology of the special polarization of the lens to effectively correct the polarization imaging error caused by the incoming light of the lens and reduce the optical aberration. This part can reduce the volume and lightweight of the lens. It is usually suitable for DSC or monitoring on bosard board lens, but its substantive effect in monitoring is not high and is not concerned by the monitoring lens manufacturer.

6. Multilayer diffractive optics ,DO technology

This lens technology is mainly developed into double-layer or three-layer lenses, which can not produce unnecessary radiation beams for the imaging light, but also offset the dispersion caused by multi-layer lenses, and the lenses are closely arranged, with the characteristics of low color difference and miniaturization. This lens technology is fully applied to small zoom lenses.

7. Double aspheric lens (DSA) technology

This lens technology belongs to a relatively special lens technology, which is composed of two aspheric lenses. The main purpose is to enhance the clarity and miniaturization. This technology is widely used in DSC applications.

8. Apochromic ,APO

This is also a special lens technology used by DSC, which can eliminate the color difference when a variety of colored light enters. This technology will be applied to the low dispersion lens and aspheric lens of the monitoring lens.

9. Multifocal imaging technology

This is the latest technology, which has been successfully applied to digital camera DSC in the second half of 2011. This multi focus imaging technology has a breakthrough application development, that is, the lens can have multi-point imaging at the imaging point. The image of this image is not clearly recorded or captured in real time, and the due clear focal point can also be restored on the later image playback or captured photos, This has made a historic breakthrough in the proof of events after the event in the monitoring application, but it has not been widely cited in the monitoring lens at present. I believe it will be in the near future; Will be cited in surveillance lens technology. Low dispersion lens and aspherical lens of monitor CCTV lens will be applied to this kind of technology.

SECULENS is a professional optical lens manufacturer in China. Focus on the R & D, production, sales and after-sales service of optical lens. The products are mainly used in high-precision optical systems such as monitoring, smart home, industry and automobile.

SECULENS major production bases,Shangrao in Jiangxi. The company has the ability to produce 25 million lenses per month.

The company focuses on building automatic transformation and realizing high-efficiency and high-quality production. The processing of glass spherical lens has automatic production lines for coring, coating, bonding and inking, and the processing of plastic aspheric surface has intelligent molding production lines and automatic coating production lines,