I have a 532nm laser with a beam diameter of 1.2mm at the point where I
need to place the spatial filter. On the beams exit from the spatial
filter I need to expand the beam to 8" diameter at a distance of 22"
Question:
1. What magnification objective do I require to acheive this ?
2. What size pinhole do I require ?
If 1 & 2 don't apply, is it just impractical to acheive this sort of
beam diameter at such a short distance?
Many thanks for any help.
Do you want it to be collimated when you're done, or just spread out in
a cone?
Re: Luminance - Illuminance ... point of a lens with 10cm diameter, such that the lamp emits a beam with 10cm diameter. ... In the "ideal" case, the beam should project a circle of 10cm diameter, at any distance. ... To account for the imperfectness, I assumed some spread of the beam, such that the beam has a diameter of 10cm when it exits the lamp, and increases by 2cm per 1m distance from the front ot the lamp. ... (sci.engr.color)
Re: Beam Expansion Question ... The idea is to acheive a collimated beam from a collimating mirror.... On the beams exit from the spatial filter I need to expand the beam to 8" diameter at a distance of 22" ... If 1 & 2 don't apply, is it just impractical to acheive this sort of beam diameter at such a short distance?... (sci.optics)
Re: What determines the width of lights refraction in a prism (each colors width)? ... | There is no 'red beam'.... It sounds like the glass in your 'peeps' might be exhibiting ... the interference pattern (distance between interference and ... they're thickness) is based on the size of the slits and they're ... (sci.physics.relativity)
Re: The speed of light is c or c+v or c-v depending on the motion of the target ... the distance between source and target will ... The interferometer used in MMX is attached to the ... source through the beam splitter of the interferometer to the ... actually I can also use a sound wave or water wave ... (sci.physics.relativity)
Re: The GPS GR Correction, put to Rest. ... Astronauts on each ship will find that clocks on the other ship ... a beam of light on the other ... When he divides this distance by the time it took the beam to go ... The eccentricity of an ellipse is given by ... (sci.physics.relativity)
