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    Freeform reflector design

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    • A Offline
      ayashko
      last edited by

      Hi all,

      I'm hoping someone might have seen some software, or knows a way to do this within S/U.

      I'm designing some freeform reflectors to be used in a lighting project but am having no luck finding an application that will easily show light/ray paths. I thought initially that I'd simply do it manually by hand in S/U, but after numerous iterations and realising that there's too much guess work involved, am moving onto looking for something a bit more targeted to the process—if there is such a thing. There are extremely $$ options available, but I don't need 99% of the features and the cost is prohibitive.

      There's an online java page that comes sort of close to what I'm after;

      http://webphysics.davidson.edu/applets/Optics/intro.html

      Of course, 3D would be better, but the important aspect is the visual ray paths.

      I need to model some TIR's, lenses and reflectors, which I can all draw up, and the level of precision in S/U would be sufficient for my needs.

      The other question i had, can I use a renderer to emulate the light output? I'm thinking of something like the image in this link for eg, where the reflector is aimed at a wall and the resultant hot spot, corona etc can be seen;

      301 Moved Permanently

      favicon

      (www.ledil.com)

      I've not used any render packages available for S/U, so if it is possible to do this, an easy to use/low learning curve option would be nice 😄

      Any help appreciated,

      Alex

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      • pilouP Offline
        pilou
        last edited by

        LightUp ?

        Frenchy Pilou
        Is beautiful that please without concept!
        My Little site :)

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        • A Offline
          ayashko
          last edited by

          That looks interesting - i'll have a look and see, but from the promo it seems it relies on data libraries for the light source info. I hope it can utilise manual input optics. I'll post a response soon.
          Thanks

          Alex

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          • A Offline
            ayashko
            last edited by

            Ok, Lightup looks awesome, but it's not suitable for my needs; it doesn't provide for the ability to draw up a freeform reflectors or lenses (no refraction) unfortunately. It does look pretty cool though 😄

            Any other ideas?

            Cheers

            Alex

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            • pilouP Offline
              pilou
              last edited by

              Have you some images of your first link?
              I can't install the java plugin for see something!

              Frenchy Pilou
              Is beautiful that please without concept!
              My Little site :)

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              • deaneauD Offline
                deaneau
                last edited by

                look at this

                favicon

                (www.marmoset.co)

                and look at the gallery

                the viewer will come later

                http://www.marmoset.co/wp-content/uploads/vromman_torch.jpg

                ok is not the right reflector however you see what you can do.

                original skechup file

                Link Preview Image
                3D Warehouse

                3D Warehouse is a website of searchable, pre-made 3D models that works seamlessly with SketchUp.

                favicon

                (3dwarehouse.sketchup.com)

                screenshot001.jpg

                this is an imagebased light rederer..very fast and cool AND not to expansive

                129 EURO is a good price.

                MADE, BORN AND LIVING IN BERLIN
                Big Thank You to all Programmers
                Some German words are so long that they have a perspective. M.Twain

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                • A Offline
                  ayashko
                  last edited by

                  Pilou,

                  I also had a few issues initially, but eventually got it working. Here's a screen grab;

                  http://ayashko.smugmug.com/LEDS/i-7295Lzt/0/L/java raytrace-L.png

                  I need to be able to draw reflector profiles, lenses that display diffraction (1.56) and possibly other components. Essentially if I can draw it in S/U then I'm happy with that level of precision—it's all non imaging optics, so there's no issues with chromatic aberration, coma, astigmatism etc.

                  Would love it to be in 3D, but am happy with 2D.

                  Deaneau, again, it looks interesting, but it's not what I'm thinking of.

                  Here's a couple of software packages that do it all, and priced accordingly;

                  http://www.lambdares.com/applications/lighting

                  favicon

                  (www.opticad.com)

                  I haven't actually seen a simple, optical, ray tracing program or even web interface that does the basics 😞

                  Cheers

                  Alex

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                  • pilouP Offline
                    pilou
                    last edited by

                    A funny prog makes Physic Optic in 2D! (and some other things! 💚
                    Algodoo (free)

                    You can import your SU object as PNG image with transparent background!
                    And transform it in object as "texture" apply on any form!
                    So your section reflector design! 😉

                    Something not shown on the video: you can make appear many windows of result parameters!

                    Frenchy Pilou
                    Is beautiful that please without concept!
                    My Little site :)

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                    • pilouP Offline
                      pilou
                      last edited by

                      Process of the importation of any SU Object as PNG image with tranparent backgroung!
                      Here a simple figure! 😄 (figure can be empty like your design section or filled like here)

                      prof.gif
                      Image linked if you want make training! 😄
                      (better if you put the image inside the Texture folder of Algodoo ! 🤓

                      In French but very visual! All menus arrive by right click on the figure!
                      First triangular form (P) with left Button and stay 1 Second at the end without release it!
                      (can be anything as form)

                      Appearance/ Button Find Texture then Button Generate Form from Texture
                      Et voilà! 😄 (of course prog is also in English! 💚

                      http://moiscript.weebly.com/uploads/3/9/3/8/3938813/5418934_orig.gif

                      fond.png

                      Frenchy Pilou
                      Is beautiful that please without concept!
                      My Little site :)

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                      • deaneauD Offline
                        deaneau
                        last edited by

                        @ ayashko oktis was misunderstand by me

                        MADE, BORN AND LIVING IN BERLIN
                        Big Thank You to all Programmers
                        Some German words are so long that they have a perspective. M.Twain

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                        • OxerO Offline
                          Oxer
                          last edited by

                          A time ago I modeled a halogen in Sketchup with high details, see the image:

                          Halogenos.jpg

                          You can obtain a realist light effect for the halogens with Thea Render for SU, create a IES light with Thea4SU and select the appropriate IES file for your model of halogen, in internet you can find a lot of IES files for many different trademarkt of halogens.

                          Luz Halogenos.jpg

                          "The result is the end what is important is the process" by Oxer
                          [http://www.oxervision.blogspot.com/(http://www.oxervision.blogspot.com/)]

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                          • A Offline
                            ayashko
                            last edited by

                            Well, spent a bit of time with algadoo – thanks Pilou! – and while it's pretty amazing (actually it kicks sketchyphysics butt – and it does have some simple ray trace abilities using 'lasers', it becomes difficult/impossible when you want to create custom parabola/hyperbola reflectors. Looks like a lot of fun though – I've sent links to all my younger cousins/family members… 😄

                            Oxer, IES files aren't a problem, I have what I need for the LED's I'm using. I'm at the design stage where I need to see the ray paths to determine/tweak reflector and lens parameters before I get to the render. Nice renders — I'll probably repost when I get to that point with questions re rendering. I didn't expect the ray trace side of things to be so hard…

                            Slightly off topic; while looking for suitable programs, I came across this which is awesome (a definite benefit of all this time spent searching the web);

                            Link Preview Image
                            GeoGebra - the world’s favorite, free math tools used by over 100 million students and teachers

                            Free digital tools for class activities, graphing, geometry, collaborative whiteboard and more

                            favicon

                            GeoGebra (www.geogebra.org)

                            Thanks for the help so far! I'm still looking 😄

                            Cheers

                            Alex

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                            • pilouP Offline
                              pilou
                              last edited by

                              @unknownuser said:

                              it becomes difficult/impossible when you want to create custom parabola/hyperbola reflectors.

                              Draw parabola/hyperbola section? or the result of the rays of the laser ?

                              About Gebra / Algodoo look this thread! 💚
                              You must be French user groups registered! 😉 (menu "setting" / User groups... up left page corner )

                              Frenchy Pilou
                              Is beautiful that please without concept!
                              My Little site :)

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