It Works!

The device didn't actually work, but it gave us confidence that we were on the right track. We asked my uncle, who is blind (I think he's a Legally Blind), to try the device.  When he looked at the device he couldn't see anything more clearly or specifically. He just saw "something in red...

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How a RED LIGHT RETINA DRAW (RLRD) Works

To understand how a RED LIGHT RETINA DRAW (RLRD) works, it's best to start at the beginning -- with a beam of red light -- and end on the retina.Step one: A red light source such as a LED, laser emits a beam of red light, not too intense.Step two: Depending on whether the light source is a laser or...

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Unexpected incident

While testing the system, I accidentally ripped the LCD cable! Oh...No!We have to buy it again. My father have to order this LCD screen from China. We didn't find any LCD screen without back-light in the US. We need a back light removed LCD, we will have a LED light instead of a back-lig...

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Never give up

We decided to redesign the system-Removed a fresnel lens.-Added a convex lens before the wide angle lens-Use a 20w LED instead of a laser diode Also, we are building a Resberry PI for video source instead using computer signals, and we will use a PI came...

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Rough Representation - The Third attempt - Failed again!

After a few days of struggling with improving the brightness of the laser source, we gave up temporarily. We decided to use a 20w LED instead.But we keep having problems again! We still end up with blurry images even when we tried with a 100w light source. On the other hand, the image seen through the...

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Rough Representation - The Second attempt - Failed again!

Instead of using the signals from the cameras, we use the signals from the PC.We tried to connect HDMI output from a computer to HDMI board of the LCD, and the images from the computer appeared on the LCD!But we keep having problems! We have absolutely no idea how to handle a laser light source that...

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The weakness and problems of the first Rough Representation

a) The light source is very low power, we can't see anything.b) The image will be display onto the Retina, so it cannot be too bright, in which it is needed to calculate the exact power.c) If we want high power for it to be brighter, we need to pay attention to safety.d) Wide angle lens is not a perfect...

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