作者: assasser (蟾蜍皮也去剃平頭好了) 站內: Electrical
標題: 大燈燈具的照明效率
時間: Fri Mar 9 22:06:07 2007
我記得上次被砍掉的某篇文章推文中 有人問到不同燈具的效率哪個好~
結果還是投射式燈具的52%效率最高
以下轉貼自http://faqlight.carpassion.info/hl-systems.htm
What is the difference between projectors and reflector design?
投射式燈具和反射式燈具之間的設計差異?
[效率]
1.Parabolic: 27%
2.Ellepsodials, 1st gen (found on early 90s BMW): 36%
3.Free form: 45%
4.Ellepsodials, 2nd gen (found on late 96+ Audi, BMW): 52%
反射式燈具(有紋路燈殼)
Parabolic:
The light source hits a parabolic reflector that will determine the main focus
of the beam. Then the front glass will dispurse the ligth more to each side.
Ie. Mercedes up until model year 2000.
例如:^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^早期賓士那種大燈
反射式燈具(全透明燈殼)
Free form:
Same as parabolic, but front lens is clear. Ie. Volvo V70
^^^^^^^^^
例如http://faqlight.carpassion.info/quad-plastic-lens.jpg
(投射式燈具)
Ellepsodial:
Light source hits a parabolic reflector, gets horisontally cut off in the first
focal point, then projected back straight again with a curved lens.
Ellepsodials also goes under the name projector headlights.
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╭┼ Origin: 玩車人的天地 ˙東吳機研站 scumotor.com.tw ┼╯ Author: assasser從 60-244-45-111.cm.dynamic.apol.com.tw 發表
→ MAXX推：反射式燈具第一種:馬車 第二種:多數國產125都是 07/03/09
→ E1Nino推：這...一半的光都失蹤了...XD 07/03/09
→ assasser推：1.變成熱散失掉 2.產生散射或是折射到四周 07/03/09
→ LancerVIII推：投射指的是魚眼？ 07/03/10
→ assasser推：我們俗稱魚眼的英文 就是projector 07/03/10