File:Osram Major Lighting and LED Patents Alternate.png
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Osram breakthrough inventions in lighting and light-emitting diode based sensing and transmission.
Summary
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| Description |
English: Osram breakthrough inventions in lighting and light-emitting diode based sensing and transmission. From left to right: Von Welsbach’s gas mantle and early incandescent light bulb with an osmium filament, first high-frequency electrical ballast for compact fluorescent lamps, high-efficient blue light-emitting diode with yellow phosphor for white light generation, heart-rate detection using efficient green light-emitting diodes in smart watches, quantum dots in light-emitting diodes. Wikimedia Commons, adapted from patents: US409530A, US976528A, US4415839A, EP0118100A1, US7078732B1, US20200046275A1 and US10763400B2 |
| Date | |
| Source | Own work |
| Author | Michael Weinold |
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I, the copyright holder of this work, hereby publish it under the following license:
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:09, 13 June 2021 | | 1,780 × 625 (391 KB) | Michael Weinold (talk | contribs) | Uploaded own work with UploadWizard |
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