how to make a laser?
how to make a laser?
anyone had a good idea how to make a (red) laser material?
- Borgleader
- Posts: 2149
- Joined: Mon Jun 16, 2008 10:48 am
- pixie
- Posts: 2332
- Joined: Sat Dec 29, 2007 4:54 am
- Location: Away from paradise
- 3D Software: Cinema 4D
- Contact:
if you use some fresnel lens you see light accumulating in given areas, I know some lasers use ruby... it's a matter to try to emulate real stuff and see if it applies, after all this is a physic light simulator
BTW I was thinking that there was some quantum bits on indigo or at least in the algorithms used by it.
BTW I was thinking that there was some quantum bits on indigo or at least in the algorithms used by it.
- Borgleader
- Posts: 2149
- Joined: Mon Jun 16, 2008 10:48 am
Fake it using a light source that has a dirac spike in its spectrum emission and put a point lightsource at the end of an almost infinite small tube using a completely absorbant material. That way only one very thin ray of light will escape. (You would't wanna try it without metropolis. Then very little light will escape)
Its sort of cheating but I bet it will work good in practice.
Its sort of cheating but I bet it will work good in practice.
Quantum physics, as I specified
Ah, specular can't emit light ?
Medium/null needs volumetric emission
Code: Select all
Fatal Error: IndigoDriverExcep: SceneLoaderExcep: Found unexpected element 'base_emission' in element 'specular'
Medium/null needs volumetric emission
obsolete asset
-
- Posts: 126
- Joined: Wed Nov 28, 2007 9:16 am
Another way to do it would be to put a very tiny, very bright hemisphere-shaped emitter at the focus of a parabolic mirror. The beam that comes off the mirror will have all of its rays parallel. You'll either have to put in an object for the beam to strike, or you'll need to use atmospherics if you want the beam to be visible.
In real life, this parabolic mirror setup would give you a straight beam, but the beam wouldn't be coherent. Indigo doesn't simulate the aspects of the beam that would differentiate it from a real laser, though. You won't get the same diffraction effects you would with a real laser, unfortunately.
In real life, this parabolic mirror setup would give you a straight beam, but the beam wouldn't be coherent. Indigo doesn't simulate the aspects of the beam that would differentiate it from a real laser, though. You won't get the same diffraction effects you would with a real laser, unfortunately.
-
- Posts: 126
- Joined: Wed Nov 28, 2007 9:16 am
- pixie
- Posts: 2332
- Joined: Sat Dec 29, 2007 4:54 am
- Location: Away from paradise
- 3D Software: Cinema 4D
- Contact:
Parabolic mirror set-up
Site regarding mathematical functions
How to get focus out of a parable
Well, it works more or less... I added a cylinder with ss on the right light on the left it's au naturel Still you will find that the light is parallel although not like in a laser perhaps... most, not to say all, of the light in the floor is indirect lighting from the ball.
Site regarding mathematical functions
How to get focus out of a parable
Well, it works more or less... I added a cylinder with ss on the right light on the left it's au naturel Still you will find that the light is parallel although not like in a laser perhaps... most, not to say all, of the light in the floor is indirect lighting from the ball.
- Attachments
-
- Experiment
- im1217982527.png (101.51 KiB) Viewed 7009 times
Nice, how do you do the parable?
I tried it with an special IES and an squashed halfsphere as mirror, but I can't get it parallel, its always diverging a bit.
The IES is a light which sends out max between zero and one degrees and null above that.
I tried it with an special IES and an squashed halfsphere as mirror, but I can't get it parallel, its always diverging a bit.
The IES is a light which sends out max between zero and one degrees and null above that.
- Attachments
-
- 20 Blender units from source to wall. At the wall the ray is about 0.2 BU in diameter.
- im1217988781.png (124.62 KiB) Viewed 7007 times
Last edited by alex22 on Wed Aug 06, 2008 2:30 pm, edited 1 time in total.
- Borgleader
- Posts: 2149
- Joined: Mon Jun 16, 2008 10:48 am
Who is online
Users browsing this forum: No registered users and 21 guests