# Inverse Caustic Design in Blender

**URL:** <https://blenderartists.org/t/inverse-caustic-design-in-blender/1652377>\
**Category:** Finished Projects\
**Tags:** luxcorerender, lighting\
**Created:** [September 9, 2026, 4:49am UTC](https://blenderartists.org/t/inverse-caustic-design-in-blender/1652377 "2026-09-09T04:49:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ilya\_Designer](https://blenderartists.org/user_avatar/blenderartists.org/ilya_designer/32/1358259_2.png) [@Ilya\_Designer](https://blenderartists.org/u/Ilya_Designer)\
**Post date:** [September 9, 2026, 4:49am UTC](https://blenderartists.org/t/inverse-caustic-design-in-blender/1652377/1 "2026-09-09T04:49:24Z")

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![0121](https://blenderartists.org/uploads/default/original/4X/0/1/9/0197af2c32d67c7c45c80de61a35da6b9d5fc268.png)

Inverse Caustic Design: a target image is converted into a glass heightmap, creating a custom relief that refracts light to project the exact desired picture onto a wall.  
Blender 5.2 + Luxcorerender

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**Author:** ![ThomasKole](https://blenderartists.org/user_avatar/blenderartists.org/thomaskole/32/1388979_2.png) [@ThomasKole](https://blenderartists.org/u/ThomasKole)\
**Post date:** [September 9, 2026, 4:13pm UTC](https://blenderartists.org/t/inverse-caustic-design-in-blender/1652377/2 "2026-09-09T16:13:15Z")

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How did you design the displacement? What’s the rendertime?

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**Author:** ![bartv](https://blenderartists.org/user_avatar/blenderartists.org/bartv/32/1477233_2.png) [@bartv](https://blenderartists.org/u/bartv)\
**Post date:** [September 12, 2026, 8:21am UTC](https://blenderartists.org/t/inverse-caustic-design-in-blender/1652377/3 "2026-09-12T08:21:51Z")

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I featured you on BlenderNation, have a great weekend!

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