anti-reflective coating

Articles, guides, and products tagged "anti-reflective coating" — a combined view of every catalogue resource on this topic.

User guide

Human factors & ergonomics engineering of an electric scooter as the 30th engineering axis: human-machine fit axis — ISO 9241 series + ISO 7250-1:2017 + ISO/TR 7250-2:2010 + ISO 11226 + ISO 11228 + ISO 14738 + ANSI/HFES 100 + ANSI/HFES 200 + DIN 33402-2 + IEC 62366-1:2015 + ISO 26262-3:2018 controllability + ISO 2631-1 WBV + ISO 7730 thermal comfort + ISO 8995 lighting + WCAG 2.2 + SAE J2944 + NHTSA Driver Distraction Guidelines

Engineering deep-dive into human factors and ergonomics as the 30th engineering axis and 13th cross-cutting infrastructure axis — describes how the fit between rider and scooter is systematically engineered: anthropometric percentile coverage (P5–P95), postural envelope for the standing rider, control reach and grip dimensions (ISO 7250-1), display glance-time and character size (ISO 9241-300 series), cognitive workload and situation awareness, controllability classification C0/C1/C2/C3 for ASIL determination (ISO 26262-3 Annex B), whole-body vibration exposure limits (ISO 2631-1), thermal comfort PMV/PPD (ISO 7730), lighting (ISO 8995), accessibility target size + contrast (WCAG 2.2), driver-distraction lexicon (SAE J2944) and the NHTSA Driver Distraction Guidelines. Covers ISO 9241 series (usability definitions + interaction principles + HCD principles + HCD process + displays + input devices); ISO 7250-1 + ISO/TR 7250-2 anthropometry; ISO 11226 static postures + ISO 11228 manual handling 4-part; ISO 14738 workstation; ANSI/HFES 100 + 200; DIN 33402-2; IEC 62366-1 medical-device usability engineering methodology (applicable beyond medical); 29-row cross-axis matrix maps the ergonomics concept onto each of the 29 prior engineering axes; 8-step DIY owner ergonomic-fit checklist; 16 numbered sections.

15 min read

User guide

Display and HMI engineering for electric scooters: sunlight-readability photometry (CR, cd/m², transflective LCD), glanceability ergonomics (ISO 15008, NHTSA 2-glance ≤ 2 s / 12 s, Fitts' law, Frutiger/DIN 1450), adaptive brightness (Weber-Fechner, PWM flicker per IEEE 1789-2015), environmental robustness (IP66, ISO 16750-3 vibration, IEC 60068 thermal −20…+70 °C), EMC (CISPR 14-1, ECE R10) and functional safety (IEC 62368-1, ISO 13849-1)

An engineering deep-dive into the one bidirectional channel between e-scooter and rider — paired with the introductory survey «Display, throttle, and error codes» (parts/display-throttle-error-codes): matrix physics (TN LCD with 90° twisted nematic vs IPS LCD with in-plane molecular switching vs OLED with organic electroluminescence via electron-hole recombination vs E-paper with electrophoretic ink); sunlight readability as a photometric problem (contrast ratio CR=(L_max+L_amb·R)/(L_min+L_amb·R) with ambient reflection, why a 250 cd/m² LCD against 100 000 lx direct sun drops to CR=1.05:1 without an anti-reflective coating, and transflective LCD as a hybrid with ambient backlight); glanceability as safety-critical ergonomics (ISO 15008:2017 in-vehicle visual presentation with minimum character-height-to-distance ratio 1:200, ISO 9241-303:2011 visual ergonomics, NHTSA Driver Distraction Guidelines 2013 + SAE J2364 2-glance principle ≤2 s single + ≤12 s total, Fitts' law T=a+b·log₂(D/W+1) for button-reach time, sans-serif Frutiger 1976 + DIN 1450:2013 Schriften — Leserlichkeit, kerning, x-height ≥60 % cap-height); adaptive brightness (Weber-Fechner logarithmic perception ΔI/I=const, ambient light sensor 0.01-100 000 lx, PWM dimming for LCD backlight with flicker frequency ≥1 kHz per IEEE 1789-2015 No-Observable-Effect threshold); environmental robustness (IEC 60529:2013 IP66 ingress dust-tight+powerful jets, ISO 16750-3:2012 road vehicle mechanical loads 10-2000 Hz random vibration, IEC 60068-2-1/-2 temperature −20…+70 °C cycling, IEC 60068-2-27 mechanical shock 1500g 0.5 ms half-sine, IEC 60068-2-30 damp heat 25/40 °C 95 % RH, ASTM B117-19 salt spray 5 % NaCl 35 °C 96 h); EMC (CISPR 14-1:2020 household-appliance emission, UNECE Regulation 10 Rev 6:2017 vehicle EMC 30 MHz-1 GHz radiated, ferrite chokes for PWM-backlight harmonic suppression); functional safety (IEC 62368-1:2018 hazard-based safety engineering with ES1/ES2 energy-source classes + PS1/PS2 power source + MS1/MS2 mechanical source, ISO 13849-1:2015 PL_d performance level so that display failure does NOT cause throttle/brake loss); and the full comparison matrix of 12 standards (ISO 15008 + ISO 9241-303 + ISO 9241-11 + NHTSA/SAE J2364 + IEEE 1789-2015 + IEC 62368-1 + IEC 60529 + IEC 60068-2 + ISO 16750-3 + CISPR 14-1 + UNECE R10 + ISO 13849-1).

18 min read