If you were Registered and logged in, you could reply and use other advanced thread options
|
Posted by Frank on October 15, 2009, 2:12 pm
frank1492 wrote:
show/hide quoted text
> I may be looking for something more than many of you think. (Thanks so
> much for your ideas.)
> To clarify, this is the light that caught my attention:
> http://www.rei.com/product/793941
> Not really looking to spend quite that much, but this is in the
> league, power-wise. I thought it would be good to use in an emergency
> on my boat if I got caught in darkness. (Rare but could happen.)
> Frank
>
>
>
>
>
>
> wrote:
>
>> Should have Li-Ion battery, with good life, and be rechargeable. Saw a
>> nice bike light, but would like this to be hand-held. Would prefer
>> flood to spot, high lumen.
>> Recos much appreciated. Thank you!
>> Frank
>
Might be a great light, but it is built for a bicycle, gives no idea
about light output, and is pricey for your needs.
|
|
Posted by HeyBub on October 15, 2009, 3:14 pm
Frank wrote:
show/hide quoted text
> Might be a great light, but it is built for a bicycle, gives no idea
> about light output, and is pricey for your needs.
It SAYS, under "Specs"
1 LED
110 Lumens
|
|
Posted by Frank on October 15, 2009, 5:34 pm
HeyBub wrote:
show/hide quoted text
> Frank wrote:
>> Might be a great light, but it is built for a bicycle, gives no idea
>> about light output, and is pricey for your needs.
>
> It SAYS, under "Specs"
>
> 1 LED
> 110 Lumens
>
>
Missed that. I was looking at laundry list on page. All lights should
be required to put lumens on the package. That's how I shop for
incandescents and cfi's.
|
|
Posted by Don Klipstein on October 15, 2009, 7:39 pm
show/hide quoted text
>Frank wrote:
>> Might be a great light, but it is built for a bicycle, gives no idea
>> about light output, and is pricey for your needs.
>It SAYS, under "Specs"
>1 LED
>110 Lumens
My take is that 110 lumens is produced by the LED (maybe
optimistically) if given "full power" according to nominal design of the
system or a "characterizing current" of the LED (or worse still is maximum
available from the LED) when the LED is cooled to having either its
heatsinkable surface or the hottest part of its semiconductor chip at 25
degrees C (77 degrees F).
(Thankfully, the Seoul Semiconductor LED that I consider most likely to
put in a bicycle headlight has its "upper grade" version supposedly
producing minimum of 100 lumens at 350 milliamps IIRC - very good
actually.)
Lumens produced by the LED do not all make it out of the lighting unit.
Reflectors are not perfectively reflective, and absorb some of the light.
Lenses reflect some of the light backwards, and the light reflected
backwards by a lens is usually mostly either absorbed or ending up going
somewhere other than where you want the light.
Maybe this bicycle light, shone upwards at a ceiling painted with
brightest white paint, will illuminate a room as well as a 110 lumen
lightbulb (typical of many 15 watt 120V ones) does. But I would not count
on that, not even from a $129 bicycle headlight - even though it would
kick kiesters and tookuses as far as bicicle headlights go if 75 lumens
usually came out from it.
- Don Klipstein (don@misty.com)
|
|
Posted by frank1492 on October 15, 2009, 8:02 pm
Thank you all again for your comments. I have saved them all and will
study them before making my decision. I'm sorry I don't have the
energy to comment on each of them.
I do think Streamlights and Fenixes are in the category I am
looking for. A good review of the best lights is:
http://www.metaefficient.com/flashlights/best-flashlights-reviews-top-rated.html
I think I am prepared to pay $100 for a really good light, even though
that may be overkill, because they fascinate me with their power. A
couple have lumens in the 700 range!
I already have a light in the category of the Lowes light, by the
way.
I will look for your further recommendations and again thank you
all for taking the trouble to help me!
Frank
wrote:
show/hide quoted text
>I may be looking for something more than many of you think. (Thanks so
>much for your ideas.)
> To clarify, this is the light that caught my attention:
>http://www.rei.com/product/793941
> Not really looking to spend quite that much, but this is in the
>league, power-wise. I thought it would be good to use in an emergency
>on my boat if I got caught in darkness. (Rare but could happen.)
> Frank
>wrote:
>>Should have Li-Ion battery, with good life, and be rechargeable. Saw a
>>nice bike light, but would like this to be hand-held. Would prefer
>>flood to spot, high lumen.
>> Recos much appreciated. Thank you!
>> Frank
|
Page 7 of 10 < 1 2 3 > last >>
| Similar Threads | Posted | | Wind up flashlight | December 26, 2007, 5:05 pm |
| OT - Flashlight for review | December 2, 2009, 5:07 pm |
| Flashlight using 9V battery? | December 4, 2009, 10:22 pm |
| best source for flashlight bulb? | February 1, 2008, 11:51 am |
| Swollen Flashlight batteries | November 27, 2008, 11:08 am |
| Free Flashlight Coupon | October 16, 2009, 9:36 am |
| need flashlight that takes a regular edison light bulb | May 29, 2008, 4:59 pm |
| Wall-Eye Flashlight to View Wall Cavity | January 30, 2006, 12:13 pm |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap
> much for your ideas.)
> To clarify, this is the light that caught my attention:
> http://www.rei.com/product/793941
> Not really looking to spend quite that much, but this is in the
> league, power-wise. I thought it would be good to use in an emergency
> on my boat if I got caught in darkness. (Rare but could happen.)
> Frank
>
>
>
>
>
>
> wrote:
>
>> Should have Li-Ion battery, with good life, and be rechargeable. Saw a
>> nice bike light, but would like this to be hand-held. Would prefer
>> flood to spot, high lumen.
>> Recos much appreciated. Thank you!
>> Frank
>