Photochromic lens
Photochromic lenses are optical lenses that darken on exposure to specific types of light of sufficient intensity, most commonly ultraviolet (UV) radiation. In the absence of activating light the lenses return to their clear state. Photochromic lenses may be made of glass, polycarbonate, or another plastic. They are principally used in eyeglasses that are dark in bright sunlight, but clear in low ambient light conditions. They darken significantly within about a minute of exposure to bright light, and take somewhat longer to clear. A range of clear and dark transmittances are available; one manufacturer makes one glass with transmittance reducing from 87% to 20%, and another reducing from 45% to 9%.
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Photochromic lens
Photochromic lenses are optical lenses that darken on exposure to specific types of light of sufficient intensity, most commonly ultraviolet (UV) radiation. In the absence of activating light the lenses return to their clear state. Photochromic lenses may be made of glass, polycarbonate, or another plastic. They are principally used in eyeglasses that are dark in bright sunlight, but clear in low ambient light conditions. They darken significantly within about a minute of exposure to bright light, and take somewhat longer to clear. A range of clear and dark transmittances are available; one manufacturer makes one glass with transmittance reducing from 87% to 20%, and another reducing from 45% to 9%.
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As lentes fotocromáticas são l ...... icarbonato, ou outro plástico.
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Een fotochrome lens is een len ...... let licht worden blootgesteld.
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Le lenti fotocromatiche sono l ...... a dominante di colore residuo.
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Le verre photochromique est un ...... stique (appelé polycarbonate).
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Photochromic lenses are optica ...... rn to their transparent state.
@en
光致變色鏡片是一種當爆露在某特定波長的光(一般是紫外光)時會 ...... 逆反應,所以當不再被紫外光照射時鏡片就會回覆原有透明的狀態。
@zh
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As lentes fotocromáticas são l ...... icarbonato, ou outro plástico.
@pt
Een fotochrome lens is een len ...... ibrillen of als contactlenzen.
@nl
Le lenti fotocromatiche sono l ...... tuirli in tutte le situazioni.
@it
Le verre photochromique est un ...... stique (appelé polycarbonate).
@fr
Photochromic lenses are optica ...... other reducing from 45% to 9%.
@en
光致變色鏡片是一種當爆露在某特定波長的光(一般是紫外光)時會 ...... 逆反應,所以當不再被紫外光照射時鏡片就會回覆原有透明的狀態。
@zh
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Fotochrome lens
@nl
Lente fotocromatica
@it
Lente fotocromática
@pt
Photochromic lens
@en
Verre photochromique
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光致變色鏡片
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