Through its acrylic dome, dynamic light source, and diffusion chamber, Donut brings colors to life—colors that breathe.
Every detail had to be engineered not just for optical accuracy in sleep environments, but also to achieve a seamless fusion of two material layers under dynamic light.
📌Color Calibration Challenge
When light passes through two different materials, it creates a delicate balance between transmittance and color shift. Our goal: maintain extreme color temperature accuracy with a dynamic precision of ±50K.
1. Acrylic Dome
Problem: Standard PC domes turn greenish under 3700K warm light (ΔE > 5) and show fingerprint residue up to 73%.
Breakthrough:
Anti-fingerprint coating: Applied a silica-based layer, reducing fingerprint retention to 9%.
Material choice: High-transmittance PC (98%), keeping ΔE < 1.2 across the 3000K–5000K range—below human perceptual limits.
2. Light Source
Problem: Off-the-shelf LEDs have a color temperature deviation of ±300K, making sleep modes unnaturally yellow (melatonin suppression rate +22%).
Breakthrough:
Dual-feedback system:
Constant-current chip ensures stable current, eliminating flicker caused by power fluctuations.
PWM dimming raised to 30kHz—far above human perception—delivering a true “flicker-free” experience.
3.Diffusion Chamber
Problem: Balancing matte vs. gloss. Standard matte coatings reflect >25% under 200 lux, creating harsh, unnatural light.
Breakthrough:
Design optimization: Mold structured into 30% glossy and 70% matte areas, cutting reflection down to 12% at 200 lux, creating layered softness.
Color formula: Custom champagne-gold mix with 5% blue offset to balance orange tint under warm light, producing a gentle, “breathing” glow.
Material integration: Dye and diffuser blended directly into high-transmittance PC polymer base, not surface-coated—ensuring even, lasting color while preserving light transmission.
💡 The Result
High-transmittance acrylic dome × Dynamic-calibrated light × Soft diffusion chamber = A natural rhythm of light and shadow, pulsing like quiet breathing in the dark.
Color is never static.
At dawn, when light brushes across the frame, or at night, when 3000K passes through crystal clarity—we let color come alive, with rhythm and breath.
This is what we call Sleep Aesthetics: turning precision engineering into a silent, visual respiration.