Ray Ban Sunglasses Materials
A glass material; hardness, not easy to scratch, impact is weak, fragile, heavy. 2 resin material; light weight, impact resistance, non-friable.
Sunglasses feature
An optical function; with contact lenses contact lens wearers can prevent and reduce water evaporation. 2 eye area; prevent burns strong sunlight, UV blocking, 3 decorative aspects; mix of different styles and colors, so you are more young and beautiful.
Sunglasses lenses and features
A resin lens; mild, non-friable, rich colors, superior UV protection glass.
Two glass lenses; including ordinary glass, tempered glass, explosion-proof glass, grinding glass, is characterized by hard wear. 3 polarizers; may consider to water and snow in the sunlight reflected light and glare, light, and can filter out 99% of the anti-glare
Indiscriminate shooting light, blocking 96% of harmful UV rays, not brittle. Shortcomings; do not wear, soft.
4 color film; ultraviolet intensity according to the ambient temperature changes and color changes.
What is polarization? What are the characteristics?
1 light is irradiated from all directions, when it comes to the object, the light reproduction directional reflection, the formation of horizontal and vertical reflection, a horizontal reflector is diffuse reflection caused by the dazzling light, no light is affecting the line of sight. 2 polarizer can be organized into the projected light from the light with the glare of reflected light, scattered light to eliminate, in the sun to see things clearer, softer. 7 polarizer layer; 1,7 layer is hard wear-resistant layer, the reinforcing layer shatterproof layer is 2,6, 3,5-layer UV filter layer, four layers of polarizing layer.
3 polarized lenses can not be frequently washed with water, can not use ultrasonic cleaning machine cleaning.
UV damage to the eyes and Symptoms
An ultraviolet light is invisible killer, eye storm drain in the strong sunlight, the lens due to excessive ultraviolet hardening on the outside eye injuries are cumulative, long time the formation of cataracts, glaucoma. 2 UV irradiation can cause itchy eyes, tearing, photophobia, redness, dark maladaptive symptoms.
Sunglasses color characteristics
A gray; balanced absorption of visible light, to see things clearly when instead of a color will darken naturally strong sense of belonging to a neutral color.
2 brown; balanced absorption of visible light, but more light purple, can improve the accuracy and clarity of vision, in the air pollution
Stained and worn under foggy conditions better
3 Green; balanced absorption of visible light, but the red, blue violet more, people with cool comfort, fit easily tired eyes
Workers people.
Four blue-gray; gray lenses with similar, but darker, darker visual effects.
5 yellow; strictly speaking, does not belong to this lens sunglasses, the lens is almost without reducing visible light, but in the foggy and dusk
Engraved can enhance clarity, providing a more accurate video, so called "night-vision goggles."
6 Water silver; made of high-density lens coating, suitable for outdoor remote person wearing it.
Ideal sunglasses should have what conditions?
1 must be filtered 96% of ultraviolet rays. About 2 lenses uniform color deviation is less than 5%. 3 lenses without distortion, visual scene is not distorted. 4 equipped with lightweight comfort. Five non-friable, wear resistance. 6 frames with facial fit closely moderate, non-slip feel. 7 lenses firmly framed with eyelashes do not touch the lens after use.