Talk about the difference between a mega lens and a normal lens
Shenzhen ya Gauss Technology Co., Ltd. all infrared camera products are using megapixel F1.2 value lens
1. different sharpness
The resolution of the lens at the center of the imaging surface is the highest, and the picture at the edge is relatively poor. In the ordinary lens, when the central resolution can basically satisfy the resolution, the sharpness of the edge will be reduced a lot, and the overall resolution can meet the requirement of 440 thousand pixels of ordinary camera.
In fact, the key factors that determine the sharpness of the lens are three: 1, the material and purity of the lens. The less the impurity of the lens, the less interference light it produces, the higher the definition of the picture; 2, the accuracy of the lens grinding. The grinding accuracy of the lens is decided by the grinding equipment. At present, the difference between the domestic lens and the foreign lens is reflected in this point. 3. The coating precision of the lens. The precise control of the coating process is also one of the decisive factors in the clarity of the lens.
In addition, megapixel lens using aspheric lenses, can reduce the aberration in the normal lens do improve the clarity of the miniaturized design; through optical design and special technology, from the center to the peripheral portion of the image quality to achieve high resolution, high contrast images, more than about 2.5 times the resolution compared with the traditional camera, even in image shearing or amplification function, still can guarantee high quality.
2. spectral transmission capability is different
The spectral transmission capability of the lens can also help to improve the resolution of the image. The transmission of broadband light will greatly increase the amount of light absorbed by the target surface of the camera. The contrast and brightness of the picture can be enhanced, and the detail of the picture is more abundant.
3. spectral correction capability difference
Only for a wide spectrum of transmission capacity of high-definition imaging is not enough, if the lens spectral correction ability is insufficient, it will make the light cannot be part of wavelength accurate on camera screen imaging, resulting in the virtual image generation. This technique is not possible for ordinary lenses to be coated.