Stack.
- µOLED 0.61" @ 1280×720.
- Collimator lens, AR both sides.
- Fold mirror (dielectric), 45°.
- Combiner visor, hardcoat + AR.
Alignment. 12 mm eye box. 18° FOV nominal. Exit pupil 22 mm from visor inner.
[OLED] -> [Collimator] -> /Mirror/ -> (Combiner) -> Eye
BOM slice.
µOLED module: < 9 g.
Optic set: ~ 21 g.
Housing + hinge: ~ 46 g.
Risk. Fog + smudge on combiner. Add hydrophobic topcoat.