FILE 1442/1656 |
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File information | |
Filename: | Screenshot_20200809-003430.jpg |
Album name: | LAllenLighting / Coloured GLS and Halogen lamps |
Manufacturer: | Osram |
Type/Model: | Theratherm Deluxe |
Wattage: | 150w |
Date manufactured: | 1972 |
Filesize: | 224 KiB |
Date added: | 30 Oct, 2020 |
Dimensions: | 1404 x 664 pixels |
Displayed: | 11 times |
URL: | http://80.229.24.59:9232/gallery/displayimage.php?pid=14999 |
Favourites: | Add to Favourites |
Comment 1 to 1 of 1 Page: 1 |
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The old red coating process was to vaporise a film of cadmium sulphoselenide onto the inside of the glass lenses prior to sealing, and this can give a visual effect similar to a dichroic coating as the film thickness changes around the edge.
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Comment 1 to 1 of 1 Page: 1 |