In modern urban life, people shuttle between diverse scenarios—the morning commute, a midday stroll, weekend hikes, and evening bike rides. Light conditions change rapidly, and sunglasses have long transcended mere sun protection, evolving into a versatile and fashionable accessory capable of navigating these diverse life scenarios. They not only protect eye health with technology but also express identity through design, becoming a mobile barrier connecting function and aesthetics. 1. Urban Commuting: Anti-Glare, Improving Driving Safety During city driving, sunlight hitting the road, the windshield of the car ahead, or the glass curtain walls of tall buildings can produce strong reflected glare, which can easily cause visual fatigue and even temporary blindness. Sunglasses with polarized lenses effectively filter horizontal stray light, significantly improving visual clarity. Gray lenses are ideal for driving because they evenly absorb all wavelengths of visible light without disto