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Thread: Aspherical lens is used on heldheld flashlight

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    Flashaholic desmondpun's Avatar
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    Default Aspherical lens is used on heldheld flashlight


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    Flashaholic* PaulW's Avatar
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    Default Re: Aspherical lens is used on heldheld flashlight

    This is what I see at that site:

    好消息!
    Target 天生射手月刊
    補購前期
    ~~ 特價 ~~
    任何: (第1-12 期)
    1 - 4本 每本HK$20
    5 - 8本 每本HK$18
    9-12本 每本HK$15
    新刊第13,14,15,16,17,18….期
    每本*儢$35 特價$30

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    Flashaholic desmondpun's Avatar
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    Default Re: Aspherical lens is used on heldheld flashlight


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    Flashaholic* PaulW's Avatar
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    Default Re: Aspherical lens is used on heldheld flashlight

    Thanks for updating. Yes, a very interesting concept -- first I have seen of it. The lens evidently is made with a varying diameter of curvature. From a google search, I found this the most descriptive:

    http://www.canon.com/technology/opti...s/content.html

    I'm waiting for Flashlightlens.com to stock these. [img]/ubbthreads/images/graemlins/grin.gif[/img] Seriously, it looks like we'll have to wait for a bulb-lens assembly -- can't make the lens without knowing the geometry with respect to bulb.

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    Flashaholic* Chris M.'s Avatar
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    Default Re: Aspherical lens is used on heldheld flashlight

    I have one of those. Curiously enough, I`m planning to finally write its review this weekend. Only a bite-sized, but it should be enough. Very individual light.

    I wouldn`t call it a "perfect" beam. Interesting, cetrtainly. Unique, definately. Round, exactly. But not perfect. It has no peripheral light outside of that picture of the moon it projects, so leads to "tunnel vision" and injured ankles.

    Certainly has its uses but, at least in the case of the 125 model that I have, isn`t built to survive much of anything. I`d hesitate to say they`re proof-of-concept lights more than anything.


    [img]/ubbthreads/images/graemlins/ooo.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img]

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    Flashaholic* PaulW's Avatar
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    Default Re: Aspherical lens is used on heldheld flashlight

    Chris,

    Thanks for weighing in. I'm looking forward to your review. I would be interested in a quantitative measure of this light's throw -- i.e., at a long distance of, say 100 feet, what the diameter of the spot is.

    Paul

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