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Considering that the TMP006 has a field of view of nearly 150°, 10° is a drastic reduction. The field of view can be limited to this degree with the right window, but the effective SNR would be hugely reduced since so much of the incoming signal would be blocked. It might be possible to compensate for this with some optical gain provided by a lens.
Can you tell me more about your application in order for me to determine its feasibility?
Best regards,
Ian Williams Linear Applications Engineer Precision Analog
Need to measure the average temperature of the objects at the field of view of 10deg. Pls see a datasheet of the sensor MLX90614ESF-BCF by Melexis, is answer customer demands.
The Melexis device costs $16 at 1ku volume, so it is not comparable to the TMP006 which was designed to be a low-cost sensor primarily used in consumer electronics.
Also, you did not tell me anything about the application. What is the customer trying to measure, and what is the ambient environment like? Why is such a narrow FOV required?
Earlier I requested specific application information which you did not provide. Are you able to provide this information? The TMP006 often requires calibration and some type of window/lens for a particular application, there is no "one size fits all" set of guidance I can give you. Also, there is not an application note for smoke detection.
A cloud detection application is not feasible. A sensor with much higher sensitivity and accuracy than the TMP006 is required for such an application.
A wall temperature application is very straightforward, since a wall is a large planar surface and it will therefore encompass a large portion of the TMP006's field of view. What particular assistance is needed with this application?
Lens is the only option when you are targeting 30-40cm distances from an object that's 2-5cm wide. SNR depends upon how good of an optics setup you can achieve. When you mentioned "close enough" can ypu please give me a range? For example if you are ~2cm away getting accuracies of 1C for a 2-5cm object will not be a problem.
Please refer to the following posts and the attachment 3010.Lens_Materials.pdffor more information on lens recommendations:
I have a customer who wants to know where the data in the document 3010.Lens_Materials.pdf comes from. They are especially interested in the optimal material thickness for polyethlyene. Can we provide this data?
