Single mirror scans both X-Y axes in 24 pin DIP
steveb...@swva.net
DougD
>This may be the successor of the present day galvo-scanner?
>
>http://www.mirrorcletech.com/devices.html
>
Definately very interesting!! I've been waiting for something like this to
appear, and they have some good demo images in their gallery. Their
rastered images look eerily like the very first monochrome laser video
displays that we stuck together using a single AOD. I suspect that they
are running in resonant mode for that, which gets tricky as you have to
do bi-directional playout of the video lines. These days that's not probably
a big deal, was a real pain when I was doing this stuff back in the Stoned
Age...
Thanks for the link!
d.
Lostgallifreyan
Indeed. Nice link. William Benner said that a single mirror in two axes had
been tried and would never be as good as two. I can see his point, not
having to lug the inertia of parts of one axis' drive along when moving the
other, but this device seems to make the point wrong in this case, as the
effort needed to flex in any direction seems to be equal. And small.
Pat B.
> m...@here.com (DougD) wrote innews:134m3r1...@news.supernews.com:
>
>
>
> > In article <1179321637.430910.101...@o5g2000hsb.googlegroups.com>,
> > stevebradd...@swva.net wrote:
> >>This may be the successor of the present day galvo-scanner?
>
> >>http://www.mirrorcletech.com/devices.html
>
> > Definately very interesting!! I've been waiting for something like
> > this to appear, and they have some good demo images in their gallery.
> > Their rastered images look eerily like the very first monochrome laser
> > video displays that we stuck together using a single AOD. I suspect
> > that they are running in resonant mode for that, which gets tricky as
> > you have to do bi-directional playout of the video lines. These days
> > that's not probably a big deal, was a real pain when I was doing this
> > stuff back in the Stoned Age...
> > Thanks for the link!
>
> > d.
>
> Indeed. Nice link. William Benner said that a single mirror in two axes had
> been tried and would never be as good as two. I can see his point, not
> having to lug the inertia of parts of one axis' drive along when moving the
> other, but this device seems to make the point wrong in this case, as the
> effort needed to flex in any direction seems to be equal. And small.
Nice, however i saw no MTBF info, maybe they dont have any info yet.
My guess this is a far better resonate device rather than a PTP device.
DougD
>>
>> - Show quoted text -
>
>Hehe--stoned age-
>I remember the day :)
>
>I requested a price quote from the mfr- no response yet.
>
Well, hopefully they won't take the TI or Silicon Machines route and make
it obtainable to only companies with >1000 employee's and sales >$5mil.
It looks like they are going to go after the laser display/galvo biz as some
of the demo files are ILDA compatible, which shows that at least someone
there has some exposure to "The Biz"... And I suspect that they will prob.
be smart enough to just price them to a hair below what a comparable galvo
set would cost.
The only thing that I wonder about now is how much optical power they
can take. The TI devices have been lighted up with some fairly high power
arc lamps, so hopefully these may at least have similar heat resistance.
Also, from what I can tell from their vector'd frames, their point to
point at high speed seems to be less than what a galvo can do. But they
may do a lot better used as high speed resonant raster devices, if someone
comes up with decent software for filled in graphics, that could give a nice
alternative to just empty vector drawing.
$.0000002
d.
Oh, yeah, I know, TI eventually lightened up on selling developer's kits, but
they were really jerks about it when they first came out...
steveb...@swva.net
>
> - Show quoted text -
Yeah, it's probably so new they dont have much field reliability data
yet...
LesioQ
velocity, etc.
Piotr.K
steveb...@swva.net
Quote from this page:
http://www.mirrorcletech.com/devkit.html
"In open-loop drive, proper filtering of applied voltages is required
to prevent mechanical ringing. Devices can be also driven in closed-
loop for feedback-based damping of such resonant responses. For
further reading on these topics please refer to:
V. Milanović, K. Castelino, “Sub-100 µs Settling Time and Low Voltage
Operation for Gimbal-less Two-Axis Scanners", IEEE/LEOS Optical MEMS
2004, Takamatsu, Japan, Aug. 2004."
steveb...@swva.net
This quote is under the "Developement Kit" area of their website:
>"Devices can be also driven in closed-loop for feedback-based damping of such resonant responses."
Pat B.
The light show biz would be a speck on the fecal produced by a fly.
They are probably targeting a different market entirely and showing
light show crap as a novelty and because it is easy to hit a wimpy
beam on the mirror. My best guess is military application. Their
price point will have to be in the realm of a DMD due to the high
manufacturing cost (just like TI) Even DMD evaluation kits arent cheap
and by no means easy to engineer around with out substantial budget.
But ofcourse i could be FOS. I worked here www.lightfarms.com in 1999
& 2000 and had a blast playing with a million mirrors in one square
inch.
steveb...@swva.net
> On May 16, 11:25 am, m...@here.com (DougD) wrote:
>
>
>
>
>
> > In article <1179333044.702548.115...@p77g2000hsh.googlegroups.com>, stevebradd...@swva.net wrote:
>
> > >> - Show quoted text -
>
>They are probably targeting a different market entirely
Your probably right--too bad. Mil or laser TV maybe.
Wait! I got a response from him (just checked my email) Here it is:
Hello Steve,
Thank you for your introduction of our company to those groups. I am
really impressed with their expert discussion and I hope to contribute
in the future. I have never participated in such a forum on-line, so
I will need to see how to do that.
Here are some quick answers to your questions below:
1) We often quote and ship just a few chips instead of complete
kits, that is not a problem. Due to wide variety of choices such as
uni-directional or bi-directional actuators, single-axis or dual-axis,
mirror size (range) etc, I usually try to get more information from
the customer before sending a quotation. Your amplifier range of 0 to
135V would work nicely for most devices. If you choose a bi-
directional device however you would need 4 channels, 2 for each axis
(positive and negative rotation on each.) We have a miniPCB that goes
with a bi-directional kit that can take -150 to 150V input and splits
it using diodes into 2 channels, so that is another way to go about bi-
directional devices. As per your request, I can prepare a quote for
all sizes of M-Series... (those are dual-axis, uni-directional
devices, about 0-6deg mechanical on each axis.)
2) I do not know the maximum power handling, we do not really
have simple ways of testing that as we have no lasers beyond ~100mW.
We have done some analyses to get around the lack of laser power in
the lab. For example, we have characterized devices up to 200C (by
heating a whole chip directly) and see now degradation in
performance. Then we did analyses of cooling power of the mirror,
silicon below, etc, and found that it greatly depends on mirror
diameter. In these analyses we made some simple assumptions on
reflectivity in low 90%s. Overall, it seemed that we should be able
to handle watts of power without increasing mirror temperature beyond
100C, though as I said 200C may be fine too. The larger the mirror,
the better our cooling power due to convection from mirror's top and
bottom surface. I asked my colleague Dr. Andy Miner who has done this
analysis to reply more specifically and here is his response:
Assuming: 2 mm mirror, 100 um pedestal, aluminum mirror at 90%
reflective, the mirror would show a 122.4 K temperature rise per watt
of incident laser power (122.4 K/W). Per incident flux, it is 3.8 K-
cm^2/W of incident laser power.
3) In most cases of what is on the shelf, mirrors are coated
with 100nm of Aluminum. This is on top of a few micrometers of single
crystal silicon. No protection/enhancement. However, larger mirrors
are fabricated separately, and I have many un-coated ones that could
be taken for Au/Cr layer deposition, or perhaps could be sent to a
vendor for specific coating. Aluminum and gold coating is available
in our fabrication facility, while most optical application-specific
coatings would have to be done outside.
4) Can I ask what do you mean by "drop by" in your e-mail, does
it mean that I should join in the forums? If someone is nearby here
in the Bay Area, we could also drop by personally.
Have you had a chance to try the livedemos online? If your computer
can work through the ActiveX controls to get the video running you
should be able to see both:
http://mirrorcletech.com/livedemo.html
http://mirrorcletech.com/livedemo2.html
I am thinking that if you have further interest and perhaps more
people involved in a discussion, we could do some demonstrations on-
line and discuss through a phone-conference. We have used this webcam
setup in the past very successfully to demonstrate some scan patterns,
or VGA-display capability etc.
Regards,
Veljko
--------------------------------------------------------------------------------
From: Braddock, Steve [mailto:Steve.B...@danahermotion.com]
Sent: Thursday, May 17, 2007 7:45 AM
To: Veljko Milanovic
Subject: RE: Price sheet
Mr. Milanovic,
I'm responding with email rather than phone because of the time
difference between east-coast and west-coast zones.
There has been some interest generated in your Mirrorcle "chip" 24 pin
DIP scanner for laser beam steering in 2 groups so far: Alt.lasers and
PhotonLexicon.
The latter folks use Cambridge, and DT-40 Pro scanners, primarily for
entertainment purposes. They are now interested in your devices since
I just happened to stumble across your website looking for optical
components and introduced them to your devices.
They are both professional and amateur laser-show providers.
Alt.lasers includes the legendary Sam Goldwasser, those folks have
been involved with laser technology since the invention of the first
ruby laser.
We would possibly be able to put together a "group-buy" (multiple
quantities) if the price was reasonable. Personally I am interested in
just the chip> Mirrorcle Technologies M-Series for experimentation if
it can be driven with +/- 135VDC linear amplifiers. We all have
multiple lasers, so there is no need for the development kit
containing a 5mw laser. A question has been posed: what is the maximum
optical power that the mirror can handle?
Also I was wondering: is it aluminum or enhanced aluminum?
Reflectivity % and angle of incidence?
Please feel free to drop by and introduce your product. There may be
significant sales potential.
Hope you have a great day :)
http://photonlexicon.com/forums/showthread.php?t=2456
Thanks,
Steve
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James Lehman
An XY scanner on a chip!
Much like SS lasers, these things will one day be almost free.
Nice!
James. :o)