optoelectronics
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LED
https://www.youtube.com/watch?v=a2IY89FAjZE
https://www.richis-lab.de/Opto06.htm
Open questions:
- Why do red LEDs look so different than green / blue?
- Size comparison in various modules?
- Wire bonding unusual? Doesn't look like ball or bond
| Vendor | Product | Output | Die area (k um2, m mm2)) | Notes |
|---|---|---|---|---|
| btf-ws2812b | Green | 39.4 | btf-ws2812b | |
| btf-ws2812b | Red | 19.6 | btf-ws2812b | |
| btf-ws2812b | Blue | 33.6 | btf-ws2812b | |
| lampwin-led-12v | Red | 28.0 | lampwin-led-12v | |
| apa102c | Blue | 36.8 | apa102c |
Red LED
Imaging
Notes:
- Coverslip (with oil, not water) made images much better for packaged LEDs with rough surface
- Infrared produced better images than optical for milky fill (see apa102c)
optoelectronics.1708161369.txt.gz · Last modified: 2024/02/17 09:16 by mcmaster