Millions of pixels lens, also calls the high-definition camera, namely 720 p can be called megapixels camera.
Industrial camera in the millions of pixels, first of all, this way of naming is not science, will bring people new to visual system a lot of misunderstanding.
For example, often think megapixels resolution industry corresponding megapixels camera lens, two million pixel resolution industrial camera corresponds to two million pixels, while five million pixel resolution industrial camera lens corresponds to five million pixels industry.
Actually industrial camera and camera corresponding industry are not industrial camera itself pixel resolution (
Spatial resolution, but their limit.
According to the current performance of the public, industrial camera millions of pixels corresponding spatial resolution limit is 90 lines/mm, two million pixels industrial camera corresponding spatial resolution is 110 lines/mm, five million pixels industrial camera corresponding spatial resolution is 160 lines/mm, so millions of pixels industrial camera lens with spatial resolution limit must be less than 90 lines/mm, two million pixels industrial camera and five million pixels with the same industry with the principle of camera lens, and decided to limit the spatial resolution of the camera is not own industrial camera pixel resolution, but a single like yuan industrial camera size.
Megapixels lens and the difference between the current megapixels ordinary lens has a prime lens, manual zoom lens, electric zoom lens, etc.
According to different industry applications, basic has more mature application solutions.
Megapixels camera sensor area is large, the ordinary camera sensor area is small.
So megapixels camera and what is the difference between ordinary lens?
One, the definition of different lens is among the highest in the resolution of the imaging plane center, in the edge of the poor.
Can basically meet the definition of normal lens in the central resolution at the same time, the edge of the resolution to reduce a lot, the overall resolution can meet the requirement of ordinary camera 440000 pixels.
Determine lens sharpness has three key factors: 1)
The lens material and purity.
Lens of impurity is less, the less the interference light, image more clear;
The lens grinding precision.
Lens grinding precision grinding equipment, the current domestic scenes from abroad differences on several of this lens;
The lens coating precision.
Precise control of coating process is one of the determinants of lens sharpness.
Additional megapixels lens using aspheric lenses, can reduce aberration, while compared with the normal lens improve clarity achieved miniaturization design;
Through the special optical design technology, from center to the peripheral portion of the image quality to achieve high resolution, high contrast images, about 2 higher than that of traditional lens.
More than five times the solution as force, shear or even in the image magnification, still can ensure high quality.
Second, the spectral transmission ability of different lens of spectral transmission also help improve the quality of image definition.
Wide frequency of light transmission, will greatly improve the camera target to the light.
Can enhance the contrast and brightness of the picture, the picture showed more abundant details.
Three, spectral correction ability only a wide spectrum of different transmission capacity for high-definition imaging is not enough, if the lens spectrum correction ability is insufficient, it will make some wavelengths of light cannot be accurately on the camera target imaging, the virtual image.
This technique is by ordinary lens coating cannot be achieved.