No replies to this topic

[iacemomo]

Lens technology application in the camera light transmission caliber relationship
Monitoring the lens and camera in order to meet the monitoring requirements of night vision illumination, many manufacturers began to manufacture sensitive to higher low-light video camera, and with Sensor and lens toward the development of large caliber, by reducing the lens aperture F value in order to improve into the amount of light, the lens enables the camera to play the function of illumination.
But it is worth mentioning is the F value will increase as the lens diameter, and is inversely proportional to the decrease, the smaller the F value, the better the performance. In order to get the lens into the amount of light, sometimes through the increase in lens diameter r and length to a smaller F-value, thereby improving the performance of the lens. This lens is technically a universal application. But surveillance cameras by the design and application, as well as factors which limit the installation site, the volume increasingly towards miniaturization, the lens itself followed must be more compact, which also makes the lens aperture design began to move toward more to design. More worthy of note is to design a smaller lens F-value, is bound to increase to compensate for aberrations of the design, which is the difficulty, because a lens technology to produce aberrations makes the lens optical performance changes to deformation imaging and appearance inch increase. Fortunately, performance deformation and dimensions increase in this part of the inhibition can be used for non-spherical lens design to solve in order to effectively compensate for aberration to achieve miniaturization of the design. The market focus manual zoom lens, is in response to this need was born, the lens size and caliber continued to increase even greater F1.0 already exist may.