Choice of microscope digital CCD camera for day-to-day work
In the daily purchase of microscope digital camera, customers are often confused: what is a CCD camera? The same pixel camera how the price difference is so big? Cheap thousands, expensive tens of thousands or even up to more than 100,000; how do we choose?
Currently on the market circulation of the camera or camera has 2 kinds of chip composition: CCD chip and CMOS chip; CCD chip and CMOS chip; 2 between the microscopic camera is not comparable. If you pursue the image quality and the authenticity of the image, or need to use the picture to publish a paper, then you choose the CCD chip (CMOS chip images taken may not be recognised); if you are just teaching or for ordinary students on the use of the pursuit of inexpensive, you can choose the CMOS chip, as detailed below:
CCD chip CMOS chip difference:
1. CCD is currently more mature imaging device, but the CMOS process is not very mature, ordinary CMOS general low resolution and poor imaging. As far as the camera is concerned, the current situation is that many low-grade entry-type digital cameras use cheap, low-grade CMOS chips, imaging quality is poor. Popular, **-type and professional digital cameras use different grades of CCDs.
2. The cost of CCD products than relatively easy to manufacture CMOS sensors are very expensive. CMOS sensors using standard CMOS semiconductor chip manufacturing technology, it is easy to achieve mass production. CCD only a few manufacturers such as Sony, Panasonic, etc. to master this technology. And CCD manufacturing process is more complex, the cost of CCD products than relatively easy to manufacture the cost of CMOS sensors to be 200% higher.
3. CCD in the capture sensitivity, pixel size and noise control is better than CMOS. ccd and CMOS in the manufacture of the main difference is that the ccd is integrated in the semiconductor monocrystalline material, and CMOS is integrated in the semiconductor material called metal oxide, the principle of work is not essentially different. ccd only a few manufacturers such as sony, panasonic and so on to master this kind of technology. And CCD manufacturing process is more complex, the use of CCD camera price will be relatively expensive. Imaging: in the same pixel CCD imaging transparency, sharpness are very good, colour reproduction, exposure can ensure basic accuracy. CMOS products tend to be general permeability, weak colour reproduction of physical objects, exposure is not very good, due to their own physical characteristics, CMOS imaging quality and CCD is still a certain distance.
In addition, in the microscopic camera, CMOS chip composed of microscopic digital camera is unable to fluorescence to take pictures, and must be used with the cooling function of the CCD camera can be completed. In short; we in the purchase of microscopic digital camera selection, must be based on our experimental or scientific research objectives and budget to make a choice, never blindly pursue the price.
