{"L1_core": {"domain": "optics", "category": "diffuser", "entity_type": "component", "subcategory": "clear"}, "L2_optics": {"haze_pct": [0, 5], "material": ["PMMA", "PC"], "appearance": "crystal_clear", "properties": ["max_transmission", "visible_LEDs", "physical_protection", "minimal_loss"], "transmission_pct": [90, 93]}, "L5_metadata": {"updated": "2026-01-02", "version": "2.0"}, "L3_relations": {"parent": "dfs"}}