At present, almost every single camera used a CMOS image sensor. In addition to this, CCDs are also used. However, there is a difference between the two. If we discuss CMOS, every pixel in it is shifted with transfer channels taking into account the applied voltage.
If you are interested in understanding the CMOS image sensor test measurements, then it is vital to grasp all the basic information of the sensor technologies without any further ado. Also, one thing you need to remember is there are not many chances to make the measurements in the right manner. This is because there is no direct access to the sensor outputs. As a user, you should know that measurements take place on the sensor chips themselves.
All the CMOS sensor pixels consist of their personal readout circuit sitting which is present just near the photosensitive area. If you compare them to CCD sensors, they are not at all costly and can be easily used in mobile devices. This is because they are known to consume less power as compared to the CCD sensors. Moreover, they also let you opt for image processing with a proper dynamic range. However, this is not the case with CCD sensors. This is one very important reason why you need to measure the sensor properties.
How to measure the CMOS image sensor qualities?
The automated test equipment professionals say that one method you can follow to measure CMOS image sensor quality is by employing a small integrated sphere. Nevertheless, please keep in mind that this sphere should have a white LED, and also a small monochromator.
Another method you can follow is by getting started with the sensor in the dark. Sensors with set time should be kept integrated for a minute or less than that. Then, you can measure the dark output which you can also come across as analog-digital units on the datasheets themselves. Once you get the readings, you can compare them with the listed ones. However, you will notice that the reading you get will be higher than the listed ones. All the difference here explains why sensors that are used in low illumination settings should be cooled down in the right manner before time.
Now to find out the spectral response of the detector, a monochromator will be used here. To all those of you who do not know what a monochromator is, it transmits a selected set of wavelengths of light. The experts publish the spectral response of devices. Once you get the monochromator readings, make sure you compare them with the published levels and then verify the sensor response in the right manner.
The final thoughts
We hope this piece has helped you understand how to measure the CMOS image sensor qualities in the right manner. In case you want to find out more about the same, get in touch with the experts today itself. These are people who have immense experience and knowledge in the field. Also, since they are the 5G semiconductor testing experts they know what will work and how.