To'g'ri ko'zni himoya qilish uchun stol chiroqni tanlash uchun ushbu fikrlarni bilib oling
Nowadays, merchants generally use the gimmick of eye protection and eye protection desk lamps to promote, but in fact, it may not protect the eyes, and it is easy to cause eye fatigue and vision loss after using it for a long time. Let's take a look at the requirements of a standard eye protection table lamp with the editor, so that you will not be fooled when you buy it.
Strob
In fact, most light sources will have stroboscopic, but the degree is different. A more accurate name for "no stroboscopic" should be "imperceptible stroboscopic". The national standard requires that the fluctuation depth of the eye protection table lamp is less than 3.2 percent to be qualified, which requires professional instruments to detect.
Buni o'zingiz sinab ko'rishning oson yo'li bor, mobil telefon/kameraning kamerasini yoqing va ekranda chiziqlar bor-yo'qligini bilish uchun yorug'lik manbasiga qarang (bu usul mutlaqo ilmiy emas, chunki u kamerani tasvirlashning turli qismlarini o'z ichiga oladi). va namuna olish algoritmlari, natijalar boshqacha bo'ladi. ), lekin bu usul asosan strobed yorug'lik manbasining nisbatan katta stroboskopik miltillashiga ega ekanligini aniqlash uchun ishlatilishi mumkin va uni sotib olish va ishlatish tavsiya etilmaydi.
Rang harorati
Yorug'lik manbasining rangi ko'pincha rang harorati tushunchasi bilan ifodalanadi. Turli xil rang harorati odamlarga turli xil his-tuyg'ularni beradi. Rang harorati qanchalik past bo'lsa, spektrning issiq sariq nurga o'xshash qizil qismi shunchalik ko'p bo'ladi. Soyalarda sovuq oq yorug'lik. Standart rang harorati 3800K dan 4200K gacha. Ko'zni himoya qiluvchi stol chiroqining rang harorati 4000K dan yuqori bo'lmasligi kerak. Yumshoq yorug'lik ko'zni kamroq bezovta qiladi.
Yoritish
Yoritish deganda maydon birligi uchun olingan ko'rinadigan yorug'likning yorug'lik oqimi tushuniladi. Yoritish diapazoni katta yoki yo'qligini bilish uchun ko'zni himoya qiluvchi stol chiroqini stol ustiga qo'ying. Agar u faqat kichik maydon bo'lsa, u mos kelmaydi; yorug'lik manbasiga ham qarashingiz mumkin. Yorug'lik manbai yuzasi qanchalik katta bo'lsa, yorug'lik shunchalik yumshoq va bir xil bo'ladi. Yorug'lik manbai kichik va ko'zni qamashtiruvchi ko'rinadi.
soya qilish
The national standard "performance requirements for eye protection desk lamps for reading and writing operations" has made shading requirements for eye protection desk lamps, that is, "the height of the eyes from the reading and writing desktop is 400mm, and the horizontal distance from the center of the light source is 600mm. If you look at the lamp, you should not see it. Reflector inner wall and light source". If the light-shielding property of the lighting product is not good, the light-emitting surface projected to the retina will produce a glare effect and cause visual fatigue.
Bundan tashqari, lampochka bilan{0}}qo‘riqlanadigan LED ko‘zli chiroqni tanlang. Optik abajur LED yorug'lik manbasini tarqatishi va tarqatishi mumkin va chiqadigan yorug'lik ko'zni qamashtirmaydi, yumshoqroq va bir xil bo'ladi.
Ko'zni himoya qilish uchun stol chiroqni tanlashda, iloji boricha ishonchli yirik brendni tanlash xavfsizroqdir. Xitoy Sifat Sertifikatlash Markazining CQC belgisini qidiring va uchta raqamga ega mahsulotlarni tanlamang.
