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laser pointer

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發表於 2008-11-29 10:55:15 | 顯示全部樓層 |閱讀模式
我想買一支laser pointer,大家用甚麼牌子?
幾多錢?幾多mW?邊到買好?
發表於 2008-11-29 11:21:43 | 顯示全部樓層
Red or green one?

Recently the blue laser pointer is coming into market, but it is extremely expensive!!!

Cheers,

Eric
發表於 2008-11-29 18:19:14 | 顯示全部樓層
紅色聽人講好難睇到。(因為波長較長,較不易散射)
我想,當住我弟弟要綠色先。
發表於 2008-11-30 07:46:38 | 顯示全部樓層

green laser

Green laser pointer is available in Ap Liu Street. The cheap ones costs slightly over HK$100. A good one with ~15 mW power and using 123-type lithium battery cost about $250.

I recommend the one that uses Lithium battery because green laser isin fact a 2-stage system (unlike the red one which is just a simple laser diode,andconsumes little power) that consumes much larger power than the red ones.

PTS
 樓主| 發表於 2008-12-5 17:48:12 | 顯示全部樓層
想問下點選購laser pointer?
發表於 2008-12-6 21:20:19 | 顯示全部樓層
今日去左鴨記買左枝綠色laser。用鋰電,10mW,$180。多謝大家的意見。
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