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جمال محمد صلوات - مفهوم LUX چیست؟
 
جمال محمد صلوات
السلام علیك یا اباعبدالله الحسین
سه شنبه 27 اسفند 1392
مفهوم LUX چیست؟

مفهوم LUX لوکس چیست؟

 

لوکس (LUX) یکی از مشخصات بسیار مهم مربوط به دوربین می‌باشد و حساسیت دوربین را به نور نشان می‌دهد.
 
هر قدر این عدد کوچکتر باشد دوربین در محیط با نور کمتری قادر به دیدن تصاویر می‌باشد.
 
دوربین‌های سیاه و سفید نسبت به دوربین‌های رنگی در میزان لوکس کمتری قادر به دریافت تصاویر می‌باشند.
 
این عدد برای دوربین‌های رنگی معمولی ۱ لوکس می‌باشد این در حالی است که برای دوربین سیاه و سفید این عدد به ۰٫۱ لوکس کاهش می‌یابد.
 
لوکس در استاندارد SI یا International Standard واحد اندازه گیری نور می‌باشد.
 
طبق تعریف یک لوکس میزان نور حاصل از یک شمع بر روی یک صفحه در فاصله ۱ متری است
 
و لومن (lumen) واحد اندازه گیری میزان نور در منبع تولید کننده در تمام جهات می‌باشد.
 
اما لوکس شدت نور دریافتی در یک نقطه را نشان می‌دهد. از لومن زمانی می‌توان استفاده کرد که دو منبع نور از یک نوع را با هم مقایسه کنیم
 
اما لوکس برای مقایسه نور منابع غیر همگون مناسب است زیرا بر نور دریافتی تأکید دارد.
 
FCC = Federal Communication Comission
 
Lux = Lumens Per Squave Meter 
 
 
 
میزان نور در محیط‌های مختلف بر اساس استاندارد به قرار زیر است:
 
محیط سرپوشیده
میزان نور بر حسب لوکس
انبار
۲۰-۷۵ lux
پله‌های اظطراری
۳۰-۷۵ lux
راهرو و راه پله
۷۵-۲۰۰ lux
فروشگاه
۷۵-۳۰۰ lux
اتاق‌های اداری
۳۰۰-۵۰۰ lux
بانک‌ها
۲۰۰-۱۰۰۰ lux
خطوط مونتاژ
۳۰۰-۱۰۰۰ lux
 
 
محیط سرباز
میزان نور بر حسب لوکس
هوای آفتابی
۱۰۰۰۰-۱۰۰۰۰۰۰ lux
آسمان ابری
۱۰۰-۱۰۰۰۰ lux
هوای گرگ و میش
۱-۱۰ lux
آسمان مهتابی
۰٫۱-۱ lux
شب ابری
۰٫۰۱-۰٫۱ lux
آسمان با ستاره ها (بدون ماه)
۰٫۰۰۱-۰٫۰۱ lux
ستاره و ابری
۰٫۰۰۰۱-۰٫۰۰۱ lux

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سه شنبه 24 مهر 1397 05:01 ب.ظ
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