How does the electronic eye work?
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It works on photo electricprinciple.\n\nBasic is a light source and a reflective surface(mirror).\n\nCircuit either stay normaly open or shute but when the beam is broken it provides a signal which in turn operates a system, say bell or a motor, that can open a door.
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It's what you peer into. There's a diagram here:\n\nhttp://en.wikipedia.org/wiki/Optical_microscope
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Optical mice use an LED and a camera to rapidly capture images of the surface beneath the mouse.  The infomation from the camera is analyzed by a DSP (Digital Signal Processor) and used to detect imperfections in the underlying surface and determine motion. Some materials, such as glass, mirrors or other very shiny, uniform surfaces interfere with the ability of the DSP to accurately analyze the surface beneath the mouse.  \nSince glass is transparent and very uniform, the mouse is unable to pick up enough imperfections in the underlying surface to determine motion.  Mirrored surfaces are also a problem, since they constantly reflect back the same image, causing the DSP not to recognize motion properly. When the system is unable to see surface changes associated with movement, the mouse will not work properly.
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Vision is tested on the conduction level by a Visual Evoked Potential. Visual stimulus generates various negative and positive waveforms in the occipital cortex, with the first waveform, C1 at about 60-80 ms (milliseconds) and the final waveform, N1 at around 160 ms.\n\nOf course you'd have to consider adding the speed of light and distance from an object to the eye to that calculation.
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It focuses an image on the retina so that you can see it.  The shape of the lens in the eye is controlled by muscles, so that the focal length can be adjusted to get sharp focus of both near and distant objects.  Errors in the shape of the lens can be corrected with eyeglasses.
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Electro-optics is a branch of technology involving components, devices and systems which operate by modification of the optical properties of a material by an electric field. Thus it concerns the interaction between the electromagnetic (optical) and the electrical (electronic) states of materials.
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the energy entering our eyes are a stream of photons, these energizes the "Rods & Cones" in our eyes. these in turn generate an appropriate electrical signal, which is carried to our brains by the optic nervs. the brain analyses the electrical signals and actually searches the immense database of pictorial references we all carry. we actually see the object in our brains. how this happens is still not fully explained. but this is proved that the energy from the photons are converted to electrical signals, another type of energy and transmitted to the brain
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Your eye works in a similar way to a camera - light passes through the lens of your eye and is 'recorded' on the back of your eye (the retina).\n\nThe retina is like a movie screen which shows the picture you are seeing. The retina has two lots of cells called 'rods' and 'cones' [because that is what they look like.] Rods can 'see' black and white.  Cones can 'see' colors. They turn the picture into an electrical message for the brain.
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Hi, I think you're great, but i'm not going to type for 5 hours when all you needed to do was put "fibre optics" into the search engine. \nTry here:\nhttp://electronics.howstuffworks.com/fiber-optic1.htm
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Use of a fresnel lens, a lens made up of circular rings that focus the light to the small area of reflecting mirror. This in turn projects the image to the screen. \n\nTake the optic workings of a telescope or microscope:\n\nOptics - microscopes and telescopes all invert the image because if they didnt, it would mean that another lens had to be added, increasing money cost. A lens is convex on both sides. That means the middle is thicker than the edges. A microscope or telescope has two lenses (basically).\nThe objective lens (usually larger and closer to the specimen or object) which allows the image of the object to be reduced to a smaller workable image inside the scope. \nThis image is inverted inside the scope. It is also too small to see with the eye, so you need another lens, the eyepiece. The eyepiece focus's your eye on the image and magnifies \nit so you can see it. Every lens has a focal length, the point at which the image is formed away from the surface of the lens. \n\nOk now we take this to the overhead:\n\nSame principle but in different Direction. You manipulate the object, transparency, over the light source after the light is passed thru the fresnel. The fresnel forms the smaller inverted image on the mirror. It is then reflected to the screen where the focal length is adjusted (moved closer or farther away from the screen )
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They are called RF modulators. They broadcast to the TV on channel 3 or 4. \n\nThe problem is that the TV is not as precise as a PC monitor so if you are using it for text you will go blind looking at the fuzzy letters. If you just want to see photos from computer jpeg files it will be OK.
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Your eye has a converging lens, so if you ever played with magnifing glass you know the effect of such lens. It concentrats all the light in one dot, which is on the back of the retina.
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Hello?! You see people every day who are walking around with examples of Snell's law at work -- eyeglasses!\n\nSnell's law applies to optics including the lenses in eyeglasses, telescope lenses, overhead projectors, video projectors.  Then there are prisms such in mobiles.  And the sparkle in diamond rings.  And why when you see a fish in a pond, the fish isn't actually where it appears to be.
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Techno Alan is wrong. The glass does absolutely nothing to shift the infrared to the visible spectrum.  What is does is absorb some of the visible light while allowing the near infrared to pass through.  Photographic film can be made to respond to the near infrared, meaning that just as some of the layers in the film get exposed by the red , green or blue, an IR film has a layer that is also sensitive to the near IR.  So all that the filter does is to supress the visible part of the scene relative to the near IR.\n\nMost digital cameras include a infrared and UV filter over the sensor.  The filter prevents near infared light from adding noise to the red pixels in the camera array, and at the same time prevents you from taking the IR picture.  The UV filtering prevents the "fogging" that can occur on bright days from UV background. It eliminates the need for the "skylight filter" that is frequently used in film photography to enhance contrast.\n\nNow to the original question - to see in the infrared you need to use a sensor that can detect infared light and then convert it to a visual image.  Night vision goggles use a layer of material that emits an electron when it absorbs a near infrared photon.  The eletrons are "multiplied" uisng a "microchannel plate".  The stream of electrons then strikes a phosphor screen, making a visible image.  \n\nAt longer infared wavelengths different detector materials are used.  The materials can be either photoconductive (absorbed light changes the conductivity of the material which can be electrically read out) of photovoltaic (absorbed light generates electric charges - electrons and hoels-  within the semiconductor marterial that are collected and read out).  (CCDs or CMOS sensors in digital cameras are photovoltaic imaging devices that are sensitive to visible light).  There are also "bolometer" thermal sensors that absorb infared light, generatyinga  small change temperature can be read out to form an image.
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Each of the eyes are slightly recessed, and each eye points in a slightly different direction.  This makes it so that depending on which eye detects the most light, the insect is able to determine the direction of the light.  Humans, by contrast, find the location of light by having a lens which focuses the incoming light on the photo-sensitive retina at the back of the eye.
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Assuming it passes through the cornea and lens and hits the retina, it'll be absorbed by the cells of the retina. Its energy is used in the chemical reaction in the cell which creates the nerve impulse that passes to your brain and allows you to "see" the light.
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close one eye and stare at a single point. then using a protractor or something move a yardstick with a red dot sticking out of the end up or down to a point where you cant see it, mabby we dont have one