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BuKePrinting >> knowledge >> 紫外線與紅外線與印刷的關系

紫外線與紅外線與印刷的關系

From:Buke printing factory of China深圳步殼印刷廠 | Author:China Bukeprinting factorybook0755 | Published time: 2020-07-29 | 1136 Views | Share:
紫外線與紅外線與印刷的關系。在印刷行業,人們通常只關心可見光,但有時也應當關註一下波長剛剛超出380~780mm可見光範圍的那一部分光譜成分,否則它們不知在什麽時候真會給我們點顏色”看看。

紫外線與紅外線與印刷的關系

在印刷行業,人們通常只關心可見光,但有時也應當關註一下波長剛剛超出380~780mm可見光範圍的那一部分光譜成分,否則它們不知在什麽時候真會給我們點顏色”看看。

波長剛剛短於可見光譜短波端紫光的光波就是人們熟悉的紫外線(UV),它本身不會為人眼察覺,但可以激發紙張、油墨里添加的熒光增白劑,使其發出可見光,與紙張、油墨的反射光譜疊加在一起呈現出顏色,產生出特別白的紙與非常鮮艷的墨,這種熒光現象出現與否與光源的紫外光譜成分的含量有關。因此,雖然紫外光波並非直接可見但在觀測可能含有熒光成分的物體顏色時,應當註意照明光源中是否含有紫外光,否則會使看到的顏色與測量結果不符。

波長剛剛長於可見光譜長波端紅光的光波就是人們所說的紅外線(IR),它可以使你的皮膚感覺到熱,但不會被你的眼睛所察覺。然而,數碼相機內的感光元件CCD(光電耦合器件)對紅外光非常敏感,因此不得不在相機內安裝紅外(IR)濾光鏡,以濾去紅外線。

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