paraboloid from x and y data points

[zerotolerance]

Is this any better?

[Darin.K]

This should do the trick, I picked an unfortunate data format by bundling the XYZ, but you can clean that up later.

[zerotolerance]

There are no words that I can express or say for the AMAZING help that you provided. It's SPOT ON to what I needed. I thank you for everything that you have done Darin.

P.S. you mentioned some small erroron the formattin. I couldn't see anything. 

Please continue with the great work that you provide to this forum, and many thanks once again.

Kas

[Ben]

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zerotolerance wrote:

There are no words that I can express or say for the AMAZING help that you provided. It's SPOT ON to what I needed. I thank you for everything that you have done Darin.

P.S. you mentioned some small erroron the formattin. I couldn't see anything. 

Please continue with the great work that you provide to this forum, and many thanks once again.

Kas

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Pssssst, Kas, Darin gets paid* based on the number of Kudos he recieves. You still have a chance to thank him "the right way".

Ben

PS: The term "paid" does NOT imply any real money. He, like many of the others you will find here are just volunteers.

Message Edited by Ben on 08-31-2009 12:50 PM

[Darin.K]

Glad it was useful.  No "error" per se, just noticed that I created a cluster of points which had to be immediately unbundled.  There might be a slightly better way, but in most cases like this I'll choose function over form...

[zerotolerance]

Hello Again. Attached is the same software just programmed in a different and more presentable way. The program does indeed allow for the designing of the off-axis parabolic mirrors based on the basic geometrical mathematics. 

It is however alittle cumbersome to try and design an off-axis parabolic mirror from the current user interface that the program has. 

The picture shown below depics the parameters by which an off-axis parabolic is defined. For instance, the EFL (Effective Focal Length) is always going to be TWICE larger then the PFL (Parent Focal Length), provided that the Reflecting ANGLE from the incident Ray to the reflected Ray is 90 Deg.

The image is taken from "http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=2307&PageNum=3&StartRow=41", and I just placed some realistic dimenssions again taken from the advertised mirrors in order to better explain the relation between different parameters. 

Basically, the attached program provides the backbone of the off-axis parabolic mirrors, however can we replace some (if not all) of the current user controll parametres (as shown in the pic.) with more meaningfull parametres of the off-axis mirrors. So if the user inputs lets say the EFL Distance, Reflecting Angle and Diameter then the off-axis parabolic mirror will automatically be designed and positioned itself on the right part of the paraboloid i.e. the Y-sofset as the pic shows. 

 Thanks

Kas

Message Edited by zerotolerance on 09-07-2009 07:49 AM

[Darin.K]

I used the most generic parameterization for the parabola, you can easily choose a more suitable one.  You can also bag the whole Eval VI and hard-wire your own.  Looking at the picture it is obvious that offset = EFL*sin(theta) and that 2*PFL = EFL(1+cos(theta)).  Use the fact that a in the generic formula is equal to 1/(4*PFL) and you get the following.  I set the cylinder center to offset as well.  Double-check and use at your own peril.

[walter18]

hi , can i have some help in getting the sets in the paraboloid , i am verry pressure with my thesis .. pls 😞

[walter18]

hi kas , 

can i have a request 

[altenbach]

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@walter18 wrote:

hi , can i have some help in getting the sets in the paraboloid , i am verry pressure with my thesis .. pls 😞

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Instead of adding to am 8 year old discussion, please start a new thread and explain exactly what your problem is. What is a "set"? What is the meaning of "into a paraboloid"? What is the thesis about?