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Cameras as we know them have long been eye-like: a lens captures light and focuses it on film or a detection sensor, just as the lenses in our eyes focus light on our retinas. What would an eye be like without a lens? Capable of receiving light and to some extent discerning color, but otherwise useless, completely unable to focus that light. So a camera without a lens is kind of deal-breaker, right?
Read more: Finally, a Camera Without a Lens (and a Sensor the Size of a Pixel) | TIME.com techland.time.com...
Situated behind the pupil is a colorless, transparent structure called the crystalline lens. Ciliary muscles surround the lens. The muscles hold the lens in place but they also play an important role in vision.
When the muscles relax, they pull on and flatten the lens, allowing the eye to see objects that are far away. To see closer objects clearly, the ciliary muscle must contract in order to thicken the lens.
- See more at: www.livescience.com...
When light falls on the retina of the human eye, it hits 126 million sensory cells which transform it into electrical signals. Even the smallest unit of light, a photon, can stimulate one of these sensory cells
ChaoticOrder
Ok, so not only can we control the size of our pupils (for letting more or less light in) but we also have a lense which we can control with muscles inside of our eyes? I didn't realize we could actually control the shape of the lense, now it makes a bit more sense to me. But I'm still not fully understanding how the lense is able to solve this problem, I really need a detailed technical explanation of how it works. You've given me enough to go on for now, I should be able to figure out the rest myself. The reason I need to understand it in such detail is because I want to build a graphics engine which is very much based on the principles of how light travels and how the human eyes work.
ChaoticOrder
The reason I need to understand it in such detail is because I want to build a graphics engine which is very much based on the principles of how light travels and how the human eyes work.
ChaoticOrder
Ok, so not only can we control the size of our pupils (for letting more or less light in) but we also have a lense which we can control with muscles inside of our eyes? I didn't realize we could actually control the shape of the lense, now it makes a bit more sense to me.
Bedlam
I think that sounds like "ray tracing", have you looked at that yet?