As an essential part of machine vision system, optical lens（CCTV LENS）directly affects the quality of imaging and the implementation and effect of algorithm. Optical lens can be divided into short focus lens, medium focus lens and long focus lens; From the field of view, there are wide-angle, standard and telephoto lenses; The structure is divided into fixed aperture fixed focus lens, manual aperture fixed focus lens, automatic aperture fixed focus lens, manual zoom lens, automatic zoom lens, automatic aperture electric zoom lens, electric three variable (aperture, focal length and focus can be changed), etc.

The equipment, instruments and raw materials required for the R & D, manufacturing and production of optical lenses. The raw materials mainly include glass lenses, plastic lenses, electronic parts, plastic raw materials, metal parts, etc.

The application fields of optical lens mainly include security monitoring equipment, mobile camera module, vehicle camera module, machine vision system, VR / AR equipment, etc.

Optical lens is a necessary component in optical imaging system and a key factor affecting imaging quality. Generally, the lens is mainly composed of lens, spacer and barrel.

// Glass plastic hybrid lens is the most widely used field //

The application fields of different types of optical lenses vary greatly, including:

》Plastic lenses are mainly used in the field of smart phones;

Plastic lens is a lens composed of optical plastic lens. It is widely used in mobile phones, digital cameras and other equipment because of its strong plasticity, easy to make aspheric shape and convenient miniaturization. Glass lens is composed of glass lens. Due to its high requirements for molding technology, coating process and precision processing, and its high transmittance, it is more used in high-end image fields, such as SLR camera, high-end scanner and other equipment.

》Glass lens is mainly used in medium and high-end security video surveillance, vehicle imaging system, machine vision and medium and high-end emerging consumer electronics;

The lens produced by seculens factory is a glass plastic hybrid lens. The glass plastic hybrid lens is composed of some glass lenses and some plastic lenses. Combined with the characteristics of the two, it has high refractive index optical performance and stability. It is widely used in lens modules such as surveillance cameras, digital cameras and car cameras. SECULENS CCTV LENS product can better restore the contrast, and the lens has more optical analysis ability! The lens imaging effect is surprising and satisfactory!

》Glass plastic hybrid lens is more widely used, and almost all of the above fields can be covered.

The common measure of MTF is the conversion of the lens, which is the conversion function of MTF.

The restoration of the ideal lens can reach 100%, and the worst lens cannot restore the contrast, so the value of MTF is in the range of 0-1. The higher the value of MTF, the better the resolution of the lens. Looking for high-quality optical lens, SECULENS, good price, good quality!

//The optical lens determines the imaging effect//

In addition to sensors, the quality of optical lenses is also an important factor in determining the picture. The lens is generally composed of multiple lenses + spacer ring + lens barrel. Theoretically, the more lenses, the stronger the convergence ability of light, the higher the resolution and contrast of the lens, and the better the imaging effect.