Help finding some specific elements for infrared (IR) sensor

In summary, the conversation is about someone looking for specific elements for an infrared sensor, including Thermopile, Pyroelectric, Bolometer, MCT(HgCdTe), PbSe, and InSb sensors. They are seeking information on manufacturers and the elements must meet certain specifications in terms of pixel pitch, array type, sensing wavelength, output type, and element parameters such as size, sensitivity, resistance, noise, D*, and time constant. They are also interested in a sensor that can operate at a frequency of 1Hz to 5kHz and have a built-in TEC for cooling. The conversation ends with the person expressing frustration with reading FAQs.
  • #1
Su-Te Tsai
1
0
Dear Everyone,

I'm searching for some specific elements for infrared (IR) sensor, such as Thermopile, Pyroelectric, Bolometer, MCT(HgCdTe), PbSe, or InSb sensors.

Does anyone know how to get these kinds of elements ?
( I need some information about the manufacturers...)

The elements are required to match the specifications(a. to e.) as follows:

1. Thermopile array #1:
a. Pixel pitch: 0.6 mm
b. Array type: 2 x 4 or 4 x 4
c. Sensing wavelength: 8 ~ 14 um
d. Output type: analog for every element
e. Element parameter:
i. Element size: 0.5 mm x 0.5 mm
ii. Sensitivity: 60V/W for 8~14u
iii. Resistance: 80kΩ
iv. Noise: 36 nV/√Hz
v. D*: 0.9 x 108 for 1Hz
vi. Time constant: < 6ms

2. Thermopile array #2:
a. Pixel pitch: 1.1 mm
b. Array type: 2 x 2
c. Sensing wavelength: 8 ~ 14 um
d. Output type: analog for every element
e. Element parameter:
i. Element size: 1 mm x 1 mm
ii. Sensitivity: 50V/W for 8~14um
iii. Resistance: 80kΩ
iv. Noise: 36 nV/√Hz
v. D*: 1.3 x 108 for 1Hz
vi. Time constant: < 10ms

3. Pyroelectric array:
a. Pixel pitch: 1.1 mm
b. Array type: 2 x 2
c. Sensing wavelength: 8 ~ 14 um
d. Amplifier: with integrated voltage mode amplifier (ex. FET), every element
e. Operate frequency: 1Hz ~ 5kHz
f. Output type: analog for every element
g. Element parameter:
i. Element size: 1 mm x 1 mm
ii. Sensitivity: 120V/W for 1kHz and 8~14um
iii. Output impedance: ~100kΩ
iv. NEP: 3.8 x 10-10W/√Hz
v. D*: 2.5 x 108 for 1kHz
vi. Time constant: < 25ms

4. Bolometer array:
a. Pixel pitch: 0.3 mm
b. Array type: 8 x 8
c. Sensing wavelength: 8 ~ 14 um
d. Operate frequency: 1Hz ~ 5kHz
e. Output type: analog for every element
f. Element parameter:
i. Element size: 0.25 mm x 0.25 mm
ii. Sensitivity(before readout gain, 2V, 0Hz): 100,000V/W
iii. NETD(f/1, 300K, 30Hz): < 10mK
iv. D*: 8 x 108
v. Time constant: < 15ms

5. MCT(HgCdTe) or PbSe or InSb:
a. Sensor type: one element
b. Sensing wavelength: 3 ~ 5 um(cut-off λ= 4.9 ~ 6 um)
c. Element parameter:
i. Element size: 0.5 mm x 0.5 mm or 1 mm x 1 mm
ii. D*: 8 x 108
iii. Cooling: None or Built-in TEC type (Up to two TEC)

Thank you so much !Su-Te, Tasi.
 
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  • #2
Have you tried this?

It is so annoying to read FAQs. :oops:
 

What are infrared (IR) sensors used for?

Infrared (IR) sensors are used to detect and measure infrared radiation, which is a type of electromagnetic radiation in the infrared region of the spectrum. They are commonly used in a variety of applications such as motion detection, temperature measurement, and night vision.

What specific elements are needed for an IR sensor?

The specific elements needed for an IR sensor include an infrared light source, an optical filter, a detector, and an electronic circuit. The infrared light source emits infrared radiation, the optical filter allows only the desired wavelengths to pass through, the detector converts the infrared radiation into an electrical signal, and the electronic circuit processes and amplifies the signal.

How do I choose the right elements for my IR sensor?

The choice of elements for an IR sensor depends on the specific application and requirements. Factors to consider include the desired wavelength range, sensitivity, and response time. It is also important to ensure compatibility and proper calibration of the different elements to ensure accurate and reliable measurements.

Where can I find the necessary elements for an IR sensor?

The necessary elements for an IR sensor can be found at electronic supply stores, specialized vendors, and online retailers. It is important to ensure that the elements are of high quality and meet the required specifications for your specific application.

Are there any safety precautions to consider when working with IR sensors?

Yes, there are some safety precautions to consider when working with IR sensors. The infrared light source can be harmful to the eyes and should be handled with caution. It is also important to properly ground and shield the electronic circuit to prevent interference and potential hazards. It is recommended to follow the manufacturer's instructions and guidelines for safe handling and operation of IR sensors.

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