[Bcma-l] Museum lighting debate

bcma-l@museumsassn.bc.ca bcma-l@museumsassn.bc.ca
Wed, 3 Dec 2008 18:24:33 -0800 

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LED lighting is UV-free. There are some UV-free flourescents such as  
Fluorescent gold lamps which filter out UV emissions and wavelengths  
below 520 nm to protect critical UV-sensitive processes. However, my  
understanding is that the way these lights work is by having a UV  
filtering coating, which when it has absorbed the maximum UV rays, no  
longer is effective, so they must be changed at that time. This is  
also the situation with UV filtering films for windows.  I'm not sure  
what you mean by recessed lighting. If you just mean the bulbs are  
recessed into a well then you will want to aim them (if possible away  
from the objects),  put filters over the wells or use UV-free lights.  
If you mean they are in a recessed area in the side of the ceiling  
where they are shielded by ceiling structure, then that would be  
ideal as the light would be indirect.

Natural lighting is also a problem because of the UV rays.
The best situation is indirect lighting. Windows and skylights can be  
designed so that the light does not directly hit objects. Also in  
installing lights it is best to have them installed so as to reflect  
light off the ceiling or other indirect route as opposed to directly  
lighting the objects.
Of course other light protecting systems such as black out curtains,  
shrouds, etc. and rotating exhibits must be part of the strategy.

Peggy Pedersen

On 3-Dec-08, at 2:22 PM, bcma-l-admin@museumsassn.bc.ca wrote:

> Hello,
>
> LED lights are just coming onto the market. They draw even less  
> than CFLs and I am pretty sure they are UV-free.
>
> Ernie Tomlinson
> Interpretive Design
>
> On 3-Dec-08, at 9:06 AM, bcma-l-admin@museumsassn.bc.ca wrote:
>
>> Hi, everyone,
>>
>> As part of our renovation project which is now going on, we're  
>> redoing all the lighting in one of our buildings.  I'm seeking  
>> advice on types and sources of lighting fixtures and bulbs.  Until  
>> now, we've been using 60w incandescent bulbs, but now we're  
>> looking at the more environmentally-friendly and energy-efficient  
>> choices.  Is there a compact fluorescent bulb out there that is  
>> safe for museum use?  What about UV filtering/colour rendering,  
>> etc?  Preferably, anything we go with is available at our local  
>> Home Building Supply!
>>
>> We do have a fair amount of natural light in the building.  Most,  
>> if not all, of our new lighting will be recessed ceiling lighting.  
>> Any advice would be much appreciated.
>>
>> Thanks,
>>
>> Tammy
>>
>> ----------------------------------------------------------------
>> Tammy Hardwick
>> Manager,
>> Creston & District Museum & Archives
>> 219 Devon Street, Creston, BC V0B 1G3
>> Phone (250) 428-9262
>> Fax (250) 428-3324
>> Email mail@creston.museum.bc.ca
>> www.creston.museum.bc.ca
>
> Ernie Tomlinson
> Versatility.tv
> 250 390 1047
> Cel 729 1778
>
>
>
>


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<html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; ">
<div><br></div><div>LED lighting is UV-free. There are some UV-free =
flourescents such as=A0Fluorescent gold lamps which filter out UV =
emissions and wavelengths below 520 nm to protect critical UV-sensitive =
processes. However, my understanding is that the way these lights work =
is by having a UV filtering coating, which when it has absorbed the =
maximum UV rays, no longer is effective, so they must be changed at that =
time. This is also the situation with UV filtering films for windows. =
=A0I'm not sure what you mean by recessed lighting. If you just mean the =
bulbs are recessed into a well then you will want to aim them (if =
possible away from the objects), =A0put filters over the wells or use =
UV-free lights. If you mean they are in a recessed area in the side of =
the ceiling where they are shielded by ceiling structure, then that =
would be ideal as the light would be =
indirect.</div><div><br></div><div>Natural lighting is also a problem =
because of the UV rays.</div><div>The best situation is indirect =
lighting. Windows and skylights can be designed so that the light does =
not directly hit objects. Also in installing lights it is best to have =
them installed so as to reflect light off the ceiling or other indirect =
route as opposed to directly lighting the objects.</div><div>Of course =
other light protecting systems such as black out curtains, shrouds, etc. =
and rotating exhibits must be part of the =
strategy.</div><div><br></div><div>Peggy =
Pedersen</div><div><br></div><div><div>On 3-Dec-08, at 2:22 PM, <a =
href=3D"mailto:bcma-l-admin@museumsassn.bc.ca">bcma-l-admin@museumsassn.bc=
.ca</a> wrote:</div><br class=3D"Apple-interchange-newline"><blockquote =
type=3D"cite">Hello,<div><br =
class=3D"webkit-block-placeholder"></div><div>LED lights are just coming =
onto the market. They draw even less than CFLs and I am pretty sure they =
are UV-free.</div><div><br =
class=3D"webkit-block-placeholder"></div><div>Ernie =
Tomlinson</div><div>Interpretive Design</div><div><br><div><div>On =
3-Dec-08, at 9:06 AM, <a =
href=3D"mailto:bcma-l-admin@museumsassn.bc.ca">bcma-l-admin@museumsassn.bc=
.ca</a> wrote:</div><br class=3D"Apple-interchange-newline"><blockquote =
type=3D"cite"><span class=3D"Apple-style-span" style=3D"border-collapse: =
separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; =
font-style: normal; font-variant: normal; font-weight: normal; =
letter-spacing: normal; line-height: normal; orphans: 2; text-align: =
auto; text-indent: 0px; text-transform: none; white-space: normal; =
widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0; "><div bgcolor=3D"#ffffff"><div><font =
face=3D"Arial" size=3D"2">Hi, everyone,</font></div><div><font =
face=3D"Arial" size=3D"2"></font>=A0</div><div><font face=3D"Arial" =
size=3D"2">As part of our renovation project which is now going on, =
we're redoing all the lighting in one of our buildings.=A0 I'm seeking =
advice on types and sources of lighting fixtures and bulbs.=A0 Until =
now, we've been using 60w incandescent bulbs, but now we're looking at =
the more environmentally-friendly and energy-efficient choices.=A0 Is =
there a compact fluorescent bulb out there that is safe for museum use?=A0=
 What about UV filtering/colour rendering, etc?=A0 Preferably, anything =
we go with is available at our local Home Building =
Supply!</font></div><div><font face=3D"Arial" =
size=3D"2"></font>=A0</div><div><font face=3D"Arial" size=3D"2">We do =
have a fair amount of natural light in the building.=A0 Most, if not =
all, of our new lighting will be recessed ceiling lighting. Any advice =
would be much appreciated.</font></div><div><font face=3D"Arial" =
size=3D"2"></font>=A0</div><div><font face=3D"Arial" =
size=3D"2">Thanks,</font></div><div><font face=3D"Arial" =
size=3D"2"></font>=A0</div><div><font face=3D"Arial" =
size=3D"2">Tammy</font></div><div><font face=3D"Arial" =
size=3D"2"></font>=A0</div><div><font face=3D"Arial" =
size=3D"2">---------------------------------------------------------------=
-<br>Tammy Hardwick<br>Manager,<br>Creston &amp; District Museum &amp; =
Archives<br>219 Devon Street, Creston, BC V0B 1G3<br>Phone (250) =
428-9262<br>Fax (250) 428-3324<br>Email<span =
class=3D"Apple-converted-space">=A0</span><a =
href=3D"mailto:mail@creston.museum.bc.ca">mail@creston.museum.bc.ca</a><br=
><a =
href=3D"http://www.creston.museum.bc.ca">www.creston.museum.bc.ca</a></fon=
t></div></div></span></blockquote></div><br><div> <span =
class=3D"Apple-style-span" style=3D"border-collapse: separate; color: =
rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: =
normal; font-variant: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; orphans: 2; text-align: auto; text-indent: =
0px; text-transform: none; white-space: normal; widows: 2; word-spacing: =
0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0; "><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; "><span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; =
widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; "><span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-size: 12px; font-style: normal; font-variant: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; =
widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; "><div><div>Ernie Tomlinson</div><div><a =
href=3D"http://versatility.tv/"><font class=3D"Apple-style-span" =
color=3D"#7B0913"><b><i>Versatility.tv</i></b></font></a></div><div>250 =
390 1047</div><div>Cel 729 1778</div></div></div></span><br =
class=3D"Apple-interchange-newline"></div></span><br =
class=3D"Apple-interchange-newline"></div></span><br =
class=3D"Apple-interchange-newline"> =
</div><br></div></blockquote></div><br></body></html>=

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