Spectrophotometers are used across a wide array of applications in industries like biotechnology, pharmaceutical, forensics, medical diagnosis, etc. According to a recent study, the worldwide spectrometry market size was estimated at USD 14.1 billion. From 2021 to 2028, the study concludes that the market is expected to grow at a CAGR of 7.2%. Though a vast majority of these devices do not have cameras today, with the competition growing among manufacturers to differentiate in the market, the likelihood of them embedding cameras in spectrophotometers is very high in the coming years.
What role do OEM camera modules play in spectrophotometers?
A spectrophotometer is a device used to measure the light absorbed by a solution or substance. It is a popular technique used in chemical analysis and medical diagnosis to determine the composition of the test sample. A spectrophotometer typically consists of a light source, diffraction grating, test sample or substance, detector, and a digital display. However, in order to improve the quality of output delivered by the device, many manufacturers today are deploying cameras in spectrophotometers. This is where embedded vision or OEM cameras come into play. Cameras are used in these devices to predominantly check the quality of the solution to be examined. It is done by ensuring that the sample is free of defects such as air bubbles. Cameras also help in checking the accuracy of sample placement. We will talk in detail about the role of cameras in spectrophotometers in a later section.
A camera acts as the eye of a spectrophotometer
It can serve different purposes like:
• Capturing the reflected light
• Identifying the position of the sample
• Qualifying the sample
Let us now look at each of them in detail.
Capturing the reflected light
A spectrophotometer is commonly used in spectral analysis to assess the level of concentration in purified DNA, RNA, protein samples, etc. So, they have to quantitatively measure the reflection of visible/UV/infrared light with high-resolution imaging capabilities. It is crucial as such applications need the vision firepower to extract accurate spectral data and find out the exact concentration levels.
Identifying the position of the sample
Considering that spectrometers involve macro imaging, the camera solution helps identify the exact position of the sample to be analyzed. For instance, with a low distortion miniature lens, you can align the optical resolution with the image resolution to maximize image sharpness. It also avoids image artifacts caused by under-sampling. You can also leverage diagnostics software for measuring image sharpness and fix the best focus position.
Qualifying the sample
Cameras are also used in spectrophotometers to verify the purity of samples. Effective cameras speed up the verification process before the samples are used in any downstream sensitive reaction or assay applications. They help navigate past the challenges of the sample being prone to defects like air bubbles. These may prove to be disastrous since they cause measurement inaccuracies, which leads to incorrect results. Hence, embedded camera solutions are used to capture and analyze the image of the sample to check for air bubbles and other inconsistencies before starting the spectral analysis process.
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Post time: Nov-20-2022
