Відео

There are places you can find lens design files, e.g. www.lens-designs.com/ is one I know of. However these are not Blender files but e.g. Zemax files, so you will have to implement them yourself. Please also observe that the rendering engines for Blender are limited in regards to cemented lenses or correct chromatic aberrations of the glass materials, so you may find that complex lenses don't work well.

You can go into "edit mode" by pressing the tab button in Blender. There, you can select individual faces and assign separate materials to each face. You first have to create the differnt materials and add them to the object (in your case one glass and one mirror material), then assign them to the faces in edit mode.

Good question! Maybe it is good to say the combination works well for me and my purposes. Without the brim, in the past, I still had some warping of the first layer in the corners due to the material shrinkage. With the brim, this was effectively resolved. At the same time it is not that much effort to remove, I had more trouble getting rafts off easily in the past if settings are not correct. Therefore, I have been doing it like this for some time now. I should add, I have also not really tried other combinations since.

The main reason for using the Ortho camera is to get the linear view of the sensor, as presented here. Unless I miss something, from the raytracing/performance point of view, the persepctive camera is not different and will work jsut as well.

@@howtoprint6002 This is going to sound very odd but what if rather than pointing a perspective camera at the 'sensor plane' you shoot straight through the lenses. I'm working on a project that is intending to use virtual lenses to get more interesting renderings. Would doing it this way essentially double up the focal length of the lens?

@@JoshuaMKerr You can do it and you will see something (as I am sure you have tried already when playing around), but it is not going to be the same thing. The reason is the mapping of rays that are being traced to the pixels of the final output image. The standard perspective cameras (without depth of field option) are point sources, i.e. all rays originate from one point and are mapped to the pixels according to direction. With the depth of field option, rays are distributed over different origin locations (e.g. a circular aperture), but still mapped to pixels by direction. For a sensor, it would be that output pixels are mapped by origin location, summing rays from different directions. i.e. the other way round from perspective + depth of field. The orthographic camera does map by location, but without the summing over direction aspect.

@howtoprint6002 Interesting, thanks for all of the info. Do you think it would be possible to have a chat with you at some point, perhaps over zoom or email. It would be good to pick your brain.

@@JoshuaMKerrI've just sent you an email.

Thaks for your long and detailed comments! Regarding this question, the menu unfortunately can't be accessed again after the model is created. This is standard Blender behavior in that regard, as a consequence of it being vertex and not parametric based modelling. because you can then edit any vertex in any way, this would break the geometry away from some mathematical model, and storing the parameters makes little sense. There are already requests to implement the ability to change the lenses afterwards, but it would need some custom implementation, and I did not have the time so far to dive into this. But it is not forgotten.

Yes, it should work. What does the error message say?

@@letskirschjoghurt7359 ua-cam.com/video/3vJ9WZXZW2k/v-deo.html I made a short video showing what's happening. Error happens when I try to enable it in preferences. I screen-recording this on my Mac, but I'm getting the same error on PC.

@@gopalshah Good idea posting a video, that makes it very clear! Indeed, this 1.0 release version I made some time ago is known to cause this issue. You can better download the addon as the "latest" package. See this issue on GitHub for details: github.com/CodeFHD/OptiCore/issues/17

@@howtoprint6002 Ah, thanks! That was easy :) thanks for making this add-on. I look forward to playing around with it + LuxCore.

No, for these few objects I just typed some angle keyframes by hand

Rainbow effects are not a feature of this addon, but of a Render engine such as Cycles or LuxCoreRender. The keyword here is spectral rendering, or dispersion. LuxCore does support it with its glass material. For cycles, AFAIK it is not yet available but comming. OptiCore only has the purpose to efficiently generate the geometry of optical elements. Not material or light properties.

Technically yes, though more on account of not being used much rather than being worn out ;)

The laser is a part of the LuxCoreRender Engine. There, it is an option to the 'Area' light source

@@letskirschjoghurt7359 how can we download that engine

Hi. You are talking about how to install an addon in Blender? See e.g. this tutorial: twominutetuts.com/tutorial/installing-add-ons/ The zip file with the addon you have to download from the opticore page on GitHub. If this doesn't help, can you specify more specifically?

Thanks for the sub :) I've finally have some more time again so I started to prepare for new content ;) I'm not a lens engineer, but working in the field of optics.

@@howtoprint6002 Looking forward to it!~ It would be cool to know the journey of how you got there as well. I'm currently at a point in life where I'm wondering if I should go back to school for a second undergraduate degree, but, instead of in Biomedical Science, this time in Engineering 🤔

Hi, I added a link to the blend-file in the video description.

Cylindrical lenses are already available under the "Square Lens" object

@@howtoprint6002 Oh i see! i ended up just making my own with some circles extruded upward, sorry i am just seeing this response now! Great news ! i got an anamorphic lensing system working in blender, you should check it out! I used your program to generate two spherical lenses for a variable diopter set. I hope that is alright with you. ua-cam.com/video/F2cfuNXPfFo/v-deo.html

Hi, hope this will still help after a month... In LuxCore, Laser is hidden as an option to the "Area" type light source

I realize it is quite randomly asking but do anyone know of a good place to watch new tv shows online ?

@Krew Crosby Flixportal :)

@Aydin Hudson Thanks, I signed up and it seems to work =) I appreciate it!!

@Krew Crosby Happy to help xD

Sorry if this replay comes late. In principle yes, this is still active, but I have had little time for it lately. I don't know much myself about modern anamorphic lens designs. I do know that some designs use pure cylindrical lenses to acheive the anamorphic effect. These can already be added as part of the "Square Lens" feature

@@howtoprint6002 How do you make the laser light volumetric though?

HI @@nilsmelchert776 did you figure this out? Currently also in need for that. Thx in advance

thanks for your feedback :) There is a new "Discussions" feature on GitHub, just unlocked it for OptiCore, perhaps that would be a goid place for such a question?

hi, thanks a lot for the positive feedback! :) Note that these gears are actually made from PLA. I plan to do a video on Iglidur gears also. With a setup that spins them faster or needs mor torque to compare durability. As far as other exotic stuff is concerned, I sure want to but no specific plan yet

More esoteric materials!!!

Also I’m your proud 4th subscriber, keep it up!

Hi, sorry for the late response. And Thanks for subscribing! I've been busy with other things since I made the video, so I never used the old printer with my custom bushings much... I've just started with a second project idea. Supposedly this stuff is good for gears, so I'm planning to make an "infinity machine", a little demo experiment consisting of many gears. And as an added test for the materials, I was thinking to make it reverse, i.e. let the gears spin fast, and then compare how the performance compares between igus, PLA, PETG, ... Now I firsat need to experiment with printing gears at all to get a good fit.

thanks a lot for the feedback :) I plan to make another video soon when I have more time again