06-21-2017, 07:24 AM | #31 | |
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06-21-2017, 08:32 AM | #32 |
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I don't see how this could be a problem, after all the greater IR exposure reflected into your eyes from paper books read in sunlight, should have your eyes already covered in cataracts. The same if you read on your device without the frontlight on, but in the sunlight. There would be much more Solar IR reflected back directly into your eyes, by the white paper or the device's substrata than any produced by the touchscreen.
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06-21-2017, 08:58 AM | #33 |
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For the time being... as the Tolino brand is the most known ereader brand in Germany (next to the Amazon Kindle) and rebranding outright will hurt sales. But, at some point Rakuten will introduce a new reader under the Rakuten or Kobo brand, may be first by releasing a reader as "Rakuten Tolino" or "Kobo Tolino" to switch over to the "Kobo" or "Rakuten" brand smoothly.
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06-21-2017, 07:33 PM | #34 | |
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As for the frontlight, it is distributed across the screen by light guides to give more even coverage and is intended to be reflected off the screen towards your eye. The blue light reduction is due to some studies that suggest exposure to blue light disturbs some people's ability to sleep. The IR touch screen LEDs have their emissions directed parallel to the screen and they are not intended to be reflected off the screen towards your eye. They are NOT pointed in the direction of the pupil. If you read with an incandescent light source or by sunlight, you are getting a lot more IR from those sources in both direct exposure and reflected from your ereader screen than from the IR touchscreen LEDs. You do notice that you and your ereader both get warm out in the sunlight? The majority of that heating is produced by IR. The comment that comes to mind is that you are making the Andes out of a mole hill. Stop worrying and start reading! Last edited by DNSB; 06-21-2017 at 07:37 PM. |
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06-24-2017, 11:22 AM | #35 |
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However, the strange thing is that there are no data on LED emissions and safety tests.
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06-24-2017, 08:12 PM | #36 | |
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One item to note is that under IEC 62471-2006 or ANSI/IESNA RP-27, if a device is determined to be potentially a photobiological hazard, it must display at least a warning sign (check a laser pointer for an example of such a warning). A quick check of various web sites from LED manufacturers will yield an overabundance of information. One example being Eye Safety from OSRAM's site. Please note that they are discussing eye safety and exposure as if you were looking directly into the IR LEDs at a 200mm distance. For information on visible light LEDs used in Cree's products, see Eye Safety With LED Components. I picked these two samples since I was already familiar with OSRAM since the IR touch screen I disassembled used OSRAM LEDs and phototransistors and Cree since I owned a Cree flashlight. |
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06-25-2017, 04:51 AM | #37 |
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06-25-2017, 06:22 AM | #38 |
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Yep, he really reeled them in. I had more than a couple of facepalm moments reading this thread.
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06-25-2017, 07:16 AM | #39 | ||
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Some people say there is no emission, others that the emission is 40mW for a single LED, but it depends on the exposure (time*Quantity). It seems odd that there are no data. For this I asked. We can say everything and nothing. Quote:
Anyway infrared screens have now been overcome by capacitive screens for different reasons that we know. I was wrong to get a product now outdated. Last edited by newday07; 06-25-2017 at 07:24 AM. |
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06-25-2017, 10:20 PM | #40 |
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06-25-2017, 11:11 PM | #41 |
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06-25-2017, 11:15 PM | #42 |
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06-25-2017, 11:18 PM | #43 |
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Trolling is someone in a chat room trying to get someone to have cybersex. This is the definition of trolling from back before the Internet was public. Back in the days of online services such as Compuserve.
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06-26-2017, 01:54 AM | #44 | |||
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As for buying an outdated product? The common and, sadly, very often correct quote about electronic devices is that if you can buy it, it is obsolete. My laptop doesn't have an AMD Threadripper or an Intel Core i9-7980XE CPU. Oh, horrors! OTOH, it still lets me run multiple virtual machines with decent performance. I'd suggest stopping whinging about a non-existent hazard. A few quotes come to mind: “It is better to remain silent at the risk of being thought a fool, than to talk and remove all doubt of it.” — Maurie Switzer “To argue with a man who has renounced the use and authority of reason, and whose philosophy consists in holding humanity in contempt, is like administering medicine to the dead, or endeavoring to convert an atheist by scripture.” — Thomas Paine “Never argue with a fool, onlookers may not be able to tell the difference.” — Mark Twain Last edited by DNSB; 06-26-2017 at 02:08 AM. |
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06-26-2017, 02:01 AM | #45 |
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Jon, Jon, Jon... I was around then and trolling was not used in regards to cybersex. Trolls were persons who found amusement in disrupting newsgroups, messaging systems, chat rooms, games, etc. by posting inflammatory content.
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