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thermalsensors [2020/05/05 00:46] wf68spef |
thermalsensors [2020/06/27 13:50] wf68spef |
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* Cheap PIR thermal transparent windows: https://www.kube.ch/produkte/pir-optics/pir-fenster/ | * Cheap PIR thermal transparent windows: https://www.kube.ch/produkte/pir-optics/pir-fenster/ | ||
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- | Bought for testing: | ||
- | * Germanium: https://de.aliexpress.com/item/32958470241.html | ||
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==== Test thermal transparancy of materials ==== | ==== Test thermal transparancy of materials ==== | ||
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+ | ** Lepton 3.0 Germanium Lens** | ||
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+ | Bought here: https://de.aliexpress.com/item/32958470241.html | ||
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+ | * Image | ||
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+ | {{::img.jpeg?600|}} | ||
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+ | * Transmission of lens | ||
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+ | {{::germaninumglas.jpg?600|}} | ||
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+ | * Without lens | ||
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+ | {{::0_latest_without.png?600|}} | ||
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+ | Intensity of hottest point: 210 | ||
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+ | * With lens | ||
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+ | {{::0_latest_with_GLAS.png?600|}} | ||
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+ | Intensity of hottest point: 124 | ||
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+ | The lens dampens the intensity of the heat by at least ~40%, whis is roughly in line with the chart above. | ||
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+ | It also created a lens center spot effect in the center of the image. We need to see if this might cause problems. | ||
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+ | To be tested in real life conditions. | ||
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**Test different materials for thermal transparancy with Lepton 3.0 @ Pi4** | **Test different materials for thermal transparancy with Lepton 3.0 @ Pi4** |