作者: assasser (蟾蜍皮也去剃平頭好了) 站內: Electrical
標題: Re: 魚眼反射面的清潔
時間: Fri Mar 9 02:48:01 2007
今天又找到比較安全一點的清潔方式
不只是魚眼 反射式燈具也是需要清洗的喔!
大家參考看看~
轉貼自http://faqlight.carpassion.info/hl-general.htm
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為何要清洗燈具?
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How dirty is my headlamp on the inside?
You probably wash your exterior of your vehicle at times so you would think
that would keep lighting 100% at least for 10 years. Not so. All headlights has
some sort of breathing holes so that pressure created by warm bulbs can go in
and out. The breathing holes were made intentional, because if there were none,
headlight would need to be air tight and that is a very costly headlamp to make
considering bulbs has to be change every couple of years. Conclusion is that
road particles will enter regardless over time.
Below is picture of reflectors from a 2000 Audi TT that has been on car for 5 years. The left one is untouched, the right one is cleaned. The were placed beside each other when image was taken, so exposure is identical. However, reflect
ions will be slightly different because of differnt angles. Entire reflector has a thin film from road debries, but the cloud above center hole really stands out. That is enough to loose long distance beam reach, and headlamp will look
"cloudy".
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一.如何清洗反射式燈具的反射面(沒有將燈罩和燈座分離)
How do I clean a reflector lamp without separating lens and reflector?
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Cleaning the outside of a plastic headlight should preferrably be done with
plain dish soap and water. lenses made of glass will get more clean by using
a high qualty streak free windshield cleaner.
So far it should be very streigth for ward.
However, cleaning the inside of a headlamp becomes more tricky since you will
face the same challenges as cleaning the inside of a bottle:
[步驟]
1.Remove the headlight bulb.
2.Remove the headlight from the car.
3.Fill the headlight about 1/2 full of distilled water and put in a few drops
of dishwashing liquid.
4.Cover the bulb opening and shake the housing for a minute or so.
5.Pour out the soapy water.
6.Fill the headlight about 1/2 full of distilled water.
7.Shake, drain.
8.Repeat rinse.
9.Rinse again with 1/4 cup of rubbing alcohol added (promotes drying).
10.Drain.
11.Let headlight dry, open end down (overnight), or you can use a hair dryer to
speed things up.
12.Reinstall headlight.
13.Reinstall bulb.
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二.如何清洗投射式燈具的透鏡和反射面
How do I clean my projector lenses and reflectors?
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The main rule is:
DO NOT TOUCH THE PARABOLIC REFLECTOR ATTACHED TO THE PROJECTOR LENS.
You will permanently ruin it because of the oils from your hands.
There are two ways to avoid that:
[兩種避免施工中不小心把反射面毀掉的方法]:
1.Use some clean latex gloves. Many latex gloves have powder on them, so wash
that off first and dry them.
2.Cover up reflector from edge to edge with green paint tape. Do not let any
tape ever touch reflector.
Never stick your hand in and attempt to clean any of the projector except the
very outside. If light from the HID bulb does not shine on it, then you can
touch it with your bare fingers. But if light shines on it, it is best not to
touch it. To get it professionally cleaned, you can take it to a camera repair
^^^^^^^^^^^^^
shop. Be prepared to lectured the staff how expensive and delicate these are.
^^^^
They will use special tools and chemicals and will most likely do a great job.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
還沒想過有這種方法...XDDD不知道真的還是假的?
Now over to cleaning curved lens:
清洗魚眼透鏡的方式
They are made of glass, so surface cannot be destroyed by even the toughest
chemical, so you can use any glass cleaner of choice. The important is that
glass cleaner do not leave any residue. But if there is sand
(from sand paper or road grime) you have to follow same procedure as cleaning
reflector surface - see further down.
Now over to cleaning reflector area:
清洗魚眼反射面的方式
You can only use pure solvents such as pure isopropyl alcohol(100%) or pure
methanol. Herman has used 90% "rubbing alcohol" with good results. The
^^^^^^論壇裡的某位人士
remaining 10% in rubbing alchol is normally destilled water. Do not use tap
water, not even filtered. If you ever have to use water on optics, use
distilled water that you can find at your pharmacy/grocery store. Note that
some reflector surfaces cannot withstand chemicals, so try your selected
chemical first on a non active surface where light source does not hit.
If isopropyl alcohol or "rubbing alcohol" makes reflective surface even the
slightest tendency to dullness, switch over to a mild dish soap and hot
destilled water. Failure to do so can result in a defective reflector, which
means entire projector unit is toast!
Do not use paper towels to clean or dry. They are made from wood and will
scratch surface. Use natural cotton
(as opposed to that synthetic stuff that girls use) that you can find in
pharmacies. You can also use lens cleaning paper obtainable from a photo store.
High quality Microfibre cloths like SPI-Fibe Microfiber Cleaning Cloth can
also be used. Never apply pressure to cleaning pad. This means if you rub a
piece soaked in your cleaner on the optics, then the only pressure applied is
the weight of the pad itself.
DO NOT PRESS PAD TOWARDS ANY PARTS OF THE REFLECTOR.
Grab the pad by a VERY small corner and drag it across the surface of the lens.
Using only the pressure of the cotton. Then as you drag it across the surface
use a rolling motion so that as you pick up dirt and grime, you do not
re-expose dirt into the surface. This may require lots of pads and time. There
is several web pages on your favorite search engine on this topic. Simply type
in "cleaning optics" into search box.
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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╰╮Modify: 07/03/09 2:49:35
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