[sudo-discuss] DXF or SVG or? for scanner light fixture mount cutting for book scanner

[robb]

i think they're on to something w/the double linear fresnel lenses
<http://www.mdpi.com/1996-1073/10/12/2091/htm>
looks like it can hit 2 dimensions uniformly

On Fri, Jan 19, 2018 at 1:44 PM, <hol at gaskill.com> wrote:

> Just looked at the instructions - are we overthinking how to illuminate a
> piece of paper?  Could easily use an aluminum channel with white LED strip
> to do same task.  Happy to bring these materials next tues.
>
> On 2018-01-18 22:37, jacques revera wrote:
>
> probably less than a square foot or half of that. depends on how we remake
> the piece holding the light to raise it higher
>
> On Thu, Jan 18, 2018 at 10:23 PM, Jake <jake at spaz.org> wrote:
>
>> i have plenty of FR4 that does have copper on it, we could still use it
>> for
>> this.  how much do we need?
>>
>>
>> On Thu, 18 Jan 2018, Marc Juul wrote:
>>
>> Nice! I'm not sure we have any non-circuitboard FR4. If it's not too big
>>> we
>>> could just order it from e.g. seeedfusion as a circuitboard design with
>>> no
>>> exposed copper pads.
>>>
>>> On Thu, Jan 18, 2018 at 1:54 PM, jacques revera <jacquesrevera at gmail.com
>>> >
>>> wrote:
>>>
>>> I just purchased two refurbished 20 megapixel Canon PowerShot ELPH 160
>>>> and
>>>> the archivist lighting assembly which includes LED bulbs, sockets,
>>>> lenses,
>>>> wiring and power adapter.
>>>>
>>>> Jonathon will send us the design files for the sockets mounting plate
>>>> soon
>>>> as I tell him what format we need to cut it at the SUDO room: DXF or
>>>> SVG or
>>>> something else?
>>>>
>>>> ~
>>>>
>>>> http://diybookscanner.org/archivist/index6ea9.html?page_id=267
>>>> This is the page describing the plate. It would be convenient if the
>>>> SUDO
>>>> room has some FR4 but as long as the material is opaque, heat proof and
>>>> can
>>>> be painted black, should be no problem.
>>>>
>>>> This plate will sit at the top center of the scanner. The plate also
>>>> serves to block light from entering from the top direction. Since, we
>>>> need
>>>> to attach something to raise the lights higher than the original
>>>> hackerspace design, we should not cut this out yet. It does not need to
>>>> be
>>>> the same shape as the archivist plate as long as the socket mounting
>>>> holes
>>>> are the same.
>>>>
>>>> Jonathon wrote last week:
>>>> ."..you can move the lights further away from the platen. Because of
>>>> various design constraints, Daniel put the lights closer to the platen
>>>> than
>>>> is ideal on that model. For later models (like Daniel's Archivist
>>>> design),
>>>> the lights were been moved further away to reduce glare and hot spots.
>>>> You
>>>> want to reproduce this in some way. So just build a simple frame you can
>>>> set on top of the scanner to lift the lights. There is a mathematical
>>>> way
>>>> to find the minimum distance, but it might be easiest just to do it
>>>> empirically, pulling the lights away and taking sample photos until you
>>>> see
>>>> that there is no reflected light source."
>>>>
>>>> You can see how this the lights are put together on the archivist about
>>>> halfway down this page
>>>> http://diybookscanner.org/archivist/index9bef.html?page_id=54
>>>>
>>>> Jacques
>>>>
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>>>>
>>>>
>>>>
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