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collimate    
vt. 照准,瞄准,使成平行

照准,瞄准,使成平行

collimate
v 1: make or place parallel to something; "They paralleled the
ditch to the highway" [synonym: {parallel}, {collimate}]
2: adjust the line of sight of (an optical instrument)


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  • How can a lens collimate an image instead of just a point of light?
    1 A lens cannot collimate an image It can take the light from each point of the image into a collimated beam in a different direction Your eye can take a collimated beam and focus it to a point on your retina It can take beams in different directions and focus each to a different point, thus reconstructing the image Edit - A ray diagram
  • What type of lens is used to collimate light? - Physics Stack Exchange
    It's difficult to further collimate such a beam I succesfully got better collimated beams from LEDs by grinding the front part, thus making a flat surface for the output of the light, and putting a lens after it
  • What is the best way to collimate light emitted by a LED?
    9 One cannot collimate light from an LED accurately without loosing a great deal of light and or being happy with a very wide collimated beam, because the source is often quite a wide extended source (sometimes up to 1mm across)
  • optics - Why cant incoherent light be collimated as well as laser . . .
    While you can collimate an LED, the fact remains that the because the LED has a much (much) larger angular spread than a laser, you just can't collimate it nearly as well So, perhaps you can get an LED down to a few degrees, but the laser will be in tenths of a degree That means the laser can go across a (big) room and still make a small dot on the screen
  • Is it possible to collimate a point source of concentrated light?
    The picture is misleading because it is not to scale (obviously), but the relationships still apply in any imaging situation You can collimate the light from the image of the sun - but because the image that you made has a finite extent, the collimated beam formed will have some angular spread - it will not be "perfectly" collimated
  • Lasers and Collimation - Physics Stack Exchange
    If lasers are collimated, what causes them to decollimate? Their production system seems to suggest a completely linear, collimated light source, but they do spread out over large distances The same
  • optics - Does an aspheric lens require that the incident light be . . .
    Aspheric lenses are able to either collimate or focus light, depending on the side of the lens the light is incident In diagrams that show the aspheric lens focusing light, the incident light rays always look to be collimated
  • Min spot size for light collimated from an optical fiber?
    You don't want to collimate your fiber output, you want to image onto some target The easiest way to do that is probably collimate the output from the fiber, then use a 2nd lens to focus it onto the target But the diameter of the collimated beam is not particularly relevant to the size of the final focused spot
  • Can the neutrons in a nuclear reactor be collimated?
    This process reminds me a lot of the way lasers work, with essentially a mirrored "box" that contains the light and concentrates it before releasing it in a pulse So, my question is, could we collimate neutrons in a reactor in the same way we collimate light in a laser? Could we release them in a pulse? Could we essentially make a neutron laser?
  • Focusing white LED light into a spot as small as possible
    If you collimate with an f=50 lens, and focus that with a f=100 mm lens, the nominal magnification is 2 (well, -2 if you were keeping track of signs) Hence a 1 mm aperture is imaged to a 2 mm image size





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