This is a comparative preview, not a measured prediction of your spool. Material presets are explicitly assumed optical scenarios. PLA and PETG identify the planned polymer; that label alone does not change optics. Select a formulation and enter measured coefficients when available.

Start coupon comparisons with Polymaker Panchroma Translucent Natural, offered for light-diffusing parts, and Panchroma Basic White. Polymaker PETG Clear / White provides another comparison; record its exact formula. These are coupon candidates, not validated optical matches to the presets.

Direct light uses a fixed-output cosine-power beam, source elevation and a circular opening for recesses. Separators and the frame block rays. The lens option is an idealised angular profile with a separate efficiency, not a particular lens product. The 1010 option uses an actual 1.1 mm body. Smaller packages retain equal assumed light output; this is not a brightness comparison between products.

The preview shows a diffuse face: transmitted illumination is spread over outgoing directions instead of drawing a sharp image of each LED. An effective two-flux model controls transmission, reflection and absorption as face thickness changes. Cavity returns are diffuse, with assumed wall reflectance. Thickness does not yet model lateral spreading inside the plastic. Only sampled reflections use a fixed numerical smoothing kernel to suppress noise. This approximation does not predict see-through clear-window appearance, spectral refraction, exact colour, lux, heat or print strength. A minimum 4 mm source-to-face distance limits unresolved near-field structure. Mounting markers are sharp layout annotations, not emitted light.

Sparse infill is a Bambu-style geometric approximation, integrated through printed layers and solid skins. It shows projected material-length shadows and RGB colour filtering. It does not reproduce actual sliced extrusion paths, oblique infill ray paths, air/plastic interface scattering or chromatic aberration. Solid is the default. Polymaker’s HueForge transmission distance is colour-blending metadata; it is not an optical transmission coefficient.

The solver reports its numerical resolution and remaining ray energy after calculation.

LED fit uses body size plus your mounting allowance, actual rotated squares and collision checks. That allowance is a planning envelope, not a verified solder-pad, PCB, decoupling or wire-routing design. Rear-mounted LEDs need an opening or carrier that presents the emitting plane shown here. Raster-resolved cavities are retained; subpixel slivers remain unresolved. Amber cells have no placed LED. “Area with LEDs” does not measure light uniformity or complete illumination.

Animation uses 32 deterministic phase groups. The chase follows position, not a completed electrical wiring order. Fixed display exposure is shared by all comparisons. Settings are stored only in this browser; exported setup files include the full configuration.

NIST · diffuse optics · LEDiL · beam profiles · Printed scattering research · Bambu Studio infill source

Japanese and Islamic generators adapted from Jamie Meredith’s VectorStack Studio, under its MIT licence. The 80 mm concept uses a fixed 40 mm rear envelope ending at the middle-panel front. Changing the front depth changes the total.