Viewing angle AMG8833

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leon676
 
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Viewing angle AMG8833

Post by leon676 »

Hello,
is it possible to use the Adafruit AMG8833 Grid-EYE with a lens or objective to extend the field of view?
I would like to use it on my ceiling to detect people present, but for that it should have a larger radius than the Grid Eye has from the manufacturer.

With kind regards
Leon

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adafruit_support_bill
 
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Re: Viewing angle AMG8833

Post by adafruit_support_bill »

In theory, it should be possible. But you would need to make sure that your optics do not any substantial part of the infrared spectrum. The datasheet does not specify any specific wavelength range. But it does include this note: http://industrial.panasonic.com/cdbs/ww ... 000C66.pdf
■ Precaution for fundamental structure of sensor
Infrared Array Sensor is a thermopile type infrared sensor which detects the amount of infrared rays. Below conditions
generally degrade the temperature accuracy.
Carefully check the performance and stability under actual use conditions, and perform temperature corrections when necessary.
(1) When heating elements exist near the mounting position of the sensor.
(2) When the sensor is exposed to cold or hot air.
(3) When the temperature of the sensor body rapidly changes.
(4) When substances (e.g., glasses, acrylics or steams), which hardly transmit a far infrared ray, exist between the sensor and
the detected object.

(5) When substances (e.g., foreign substances or water), which hardly transmit a far infrared ray, adhere to the lense of the
sensor
Another approach would be to use more than one sensor oriented at angles to each other to cover the entire FOV.

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