Video monitors and CCD cameras.

On 4/18/2012 9:20 PM, Michael A. Terrell wrote:
>
> hamilton wrote:
>>
>> On 4/18/2012 6:12 AM, Michael A. Terrell wrote:
>>>
>>>      Small LCD monitors for car backup cameras:
>>>
>>> <http://www.ebay.com/sch/i.html?_from=R40&_trksid=p5197.m570.l1313&_nkw=backup+monitor&_sacat=See-All-Categories>
>>>
>>>
>>>     I have one of these to check my mailbox from the house:
>>>
>>> http://www.ebay.com/itm/370596974843
>>>
>>>
>>
>> Its amazing that a 4.3" LCD monitor costs less than $30 with case and
>> power supply built in,
>
>
>     No power supply.  It runs on 9 to 12 volts.  I run the camera and
> monitor on a surplus wall wart from a dead cordless phone.

Hmmm, do you think it can handle 9 to 12 volts without a voltage 
regulator inside ??

>
>     It is not only cased, but it has an OSD menu to adjust it.
>
>
>> but buying a raw LCD module cost so much more.
>>
>> http://www.ebay.com/itm/4-3-inch-TFT-LCD-Module-display-Touch-screen-/280665145716?pt=BI_Electrical_Equipment_Tools&hash=item4158f24174
>>
>> Anyone have links to 4.3" or 5.6" modules at comparable prices.
>
>
>     A lot of sizes show up on Ebay, and some offer a discount for bulk
> buys.
>
>

hamilton wrote:
> 
> Michael A. Terrell wrote:
> >
> >     No power supply.  It runs on 9 to 12 volts.  I run the camera and
> > monitor on a surplus wall wart from a dead cordless phone.
> 
> Hmmm, do you think it can handle 9 to 12 volts without a voltage
> regulator inside ??


   No, but it draws very little current.


-- 
You can't have a sense of humor, if you have no sense.

George, I'm working on a IR Femtosecond laser system.   A ccd from
supercircuits, and a 23$ USB NTSC frame grabber gives me nice realtime
video on either a laptop or the system control PC.

This gets you around the dying suppy of small NTSC monitors, plus I
can grab stills or video.  6 mm focal length lens seems about right
for short range applications.

Steve

On 17 Apr., 18:03, George Herold <gher...@teachspin.com> wrote:
> For one of our instruments, Diode laser spectroscopy, (http://www.teachsp=
in.com/instruments/diode_laser/index.shtml)
> We use a =A0CCD camera and little TV to image the NIR laser spot and
> observe the Rubidium fluorescence. =A0(Used to tune the laser to the
> correct wavelength.)
>
> So we didn=92t buy a lifetime supply of either the cameras or TVs and
> now they are both disappearing. =A0 (about a years supply of each on the
> shelf.)
>
> (Camera is a B&W CM625 made in Korea and distributed by cloverusa.)
> I tried a color CCD camera made by the same people and still in
> production.
> CCM630 =A0This had two issues. =A0First it has a NIR filter over the CCD
> element that had to be pried off. =A0And second the sensitivity is not
> as high.
> B&W CM625 lists minimum illumination as 0.05 lux (f 1.2) and
> color CCM630 at 0.1 lux (f 1.2)
>
> We could work with the reduced sensitivity, but it is very nice when
> you are aligning the grating on the laser.
>
> The little TV=92s have 6=94 x 8=94 foot print (15mm x 20mm) so they don=
=92t
> take up that much room on the optical bread board. =A0It is nice to have
> the monitor =91right in your face=92 as you are aligning the grating. =A0=
We
> also mount the camera on an optical post so you can move it around the
> bread board and poke into what you need to see.
>
> So I=92m looking for a new solution.
> Here=92s some ideas.
> 1.) Just find a cheap =91web cam=92 and let everyone use their laptop
> computer.
> =A0 =A0 I have some issue=92s with this.
> a.) will the camera work with all laptops?
> b.) requires user to have laptop
>
> 2.) Video surveillance gear. =A0What are these people using for
> monitors?
> Are there any little LCD (or other) displays that I could use.?
>
> Thanks in advance for any ideas, suggestions
>
> George H.


car rear view cameras several here: http://dx.com/c/car-accessories-799/rea=
rview-mirrors-cameras-715
some of them have IR led light for night use so no filters I assume

plenty of cheap displays too: http://dx.com/c/car-accessories-799/car-video=
-systems-718

-Lasse











-Lasse

On Apr 19, 4:04=A0pm, Owen Roberts <o...@case.edu> wrote:
> George, I'm working on a IR Femtosecond laser system. =A0 A ccd from
> supercircuits, and a 23$ USB NTSC frame grabber gives me nice realtime
> video on either a laptop or the system control PC.
>
> This gets you around the dying suppy of small NTSC monitors, plus I
> can grab stills or video. =A06 mm focal length lens seems about right
> for short range applications.
>
> Steve

Thanks Steve, I'll look into USB NTSC frame grabbers.  It would be
nice to sometimes get video onto a computer*.  But I hate the idea of
time lag in a web cam.  We've got a few of the LCD 'back up' displays
on order.  And several leads on the CCDs.  (Weldex in addition to
super circuits.)

George H.

* I've got this semi-psychedelic video of a diode laser sweeping
through the transverse modes of a confocal Fabry-Perot cavity.  With
the mirror separation set to less than the confocal condition.

On Apr 19, 5:00=A0pm, "langw...@fonz.dk" <langw...@fonz.dk> wrote:
> On 17 Apr., 18:03, George Herold <gher...@teachspin.com> wrote:
>
>
>
>
>
> > For one of our instruments, Diode laser spectroscopy, (http://www.teach=
spin.com/instruments/diode_laser/index.shtml)
> > We use a =A0CCD camera and little TV to image the NIR laser spot and
> > observe the Rubidium fluorescence. =A0(Used to tune the laser to the
> > correct wavelength.)
>
> > So we didn=92t buy a lifetime supply of either the cameras or TVs and
> > now they are both disappearing. =A0 (about a years supply of each on th=
e
> > shelf.)
>
> > (Camera is a B&W CM625 made in Korea and distributed by cloverusa.)
> > I tried a color CCD camera made by the same people and still in
> > production.
> > CCM630 =A0This had two issues. =A0First it has a NIR filter over the CC=
D
> > element that had to be pried off. =A0And second the sensitivity is not
> > as high.
> > B&W CM625 lists minimum illumination as 0.05 lux (f 1.2) and
> > color CCM630 at 0.1 lux (f 1.2)
>
> > We could work with the reduced sensitivity, but it is very nice when
> > you are aligning the grating on the laser.
>
> > The little TV=92s have 6=94 x 8=94 foot print (15mm x 20mm) so they don=
=92t
> > take up that much room on the optical bread board. =A0It is nice to hav=
e
> > the monitor =91right in your face=92 as you are aligning the grating. =
=A0We
> > also mount the camera on an optical post so you can move it around the
> > bread board and poke into what you need to see.
>
> > So I=92m looking for a new solution.
> > Here=92s some ideas.
> > 1.) Just find a cheap =91web cam=92 and let everyone use their laptop
> > computer.
> > =A0 =A0 I have some issue=92s with this.
> > a.) will the camera work with all laptops?
> > b.) requires user to have laptop
>
> > 2.) Video surveillance gear. =A0What are these people using for
> > monitors?
> > Are there any little LCD (or other) displays that I could use.?
>
> > Thanks in advance for any ideas, suggestions
>
> > George H.
>
> car rear view cameras several here:http://dx.com/c/car-accessories-799/re=
arview-mirrors-cameras-715
> some of them have IR led light for night use so no filters I assume
>
> plenty of cheap displays too:http://dx.com/c/car-accessories-799/car-vide=
o-systems-718
>
> -Lasse
>
> -Lasse- Hide quoted text -
>
> - Show quoted text -

Thanks Lasse, I've got some of thos on order from China.

George H.

George Herold wrote:
> On Apr 19, 4:04 pm, Owen Roberts<o...@case.edu>  wrote:
>> George, I'm working on a IR Femtosecond laser system.   A ccd from
>> supercircuits, and a 23$ USB NTSC frame grabber gives me nice realtime
>> video on either a laptop or the system control PC.
>>
>> This gets you around the dying suppy of small NTSC monitors, plus I
>> can grab stills or video.  6 mm focal length lens seems about right
>> for short range applications.
>>
>> Steve
>
> Thanks Steve, I'll look into USB NTSC frame grabbers.  It would be
> nice to sometimes get video onto a computer*.  But I hate the idea of
> time lag in a web cam.  We've got a few of the LCD 'back up' displays
> on order.  And several leads on the CCDs.  (Weldex in addition to
> super circuits.)
>
> George H.
>
> * I've got this semi-psychedelic video of a diode laser sweeping
> through the transverse modes of a confocal Fabry-Perot cavity.  With
> the mirror separation set to less than the confocal condition.
   Please post that for us aged hippies..

On Apr 23, 12:42=A0pm, Robert Baer <robertb...@localnet.com> wrote:
> George Herold wrote:
> > On Apr 19, 4:04 pm, Owen Roberts<o...@case.edu> =A0wrote:
> >> George, I'm working on a IR Femtosecond laser system. =A0 A ccd from
> >> supercircuits, and a 23$ USB NTSC frame grabber gives me nice realtime
> >> video on either a laptop or the system control PC.
>
> >> This gets you around the dying suppy of small NTSC monitors, plus I
> >> can grab stills or video. =A06 mm focal length lens seems about right
> >> for short range applications.
>
> >> Steve
>
> > Thanks Steve, I'll look into USB NTSC frame grabbers. =A0It would be
> > nice to sometimes get video onto a computer*. =A0But I hate the idea of
> > time lag in a web cam. =A0We've got a few of the LCD 'back up' displays
> > on order. =A0And several leads on the CCDs. =A0(Weldex in addition to
> > super circuits.)
>
> > George H.
>
> > * I've got this semi-psychedelic video of a diode laser sweeping
> > through the transverse modes of a confocal Fabry-Perot cavity. =A0With
> > the mirror separation set to less than the confocal condition.
>
> =A0 =A0Please post that for us aged hippies..- Hide quoted text -
>
> - Show quoted text -

OK Robert,  my first video=92s on youtube.  But first here=92s a =91scope
shot of a photodiode monitoring the output.  Each of the little bumps
is a different transverse mode.

http://bayimg.com/caofKAAdD

And now some video=92s.  Smoke =91em if you=92ve got =91em, this will be a
short =91trip=92.


http://youtu.be/geQVSrXN3tE

http://youtu.be/cZeyr0GzkOQ

http://youtu.be/bsYy-xcjF0k

I hope that works

George H.

George Herold wrote:
> On Apr 23, 12:42 pm, Robert Baer<robertb...@localnet.com>  wrote:
>> George Herold wrote:
>>> On Apr 19, 4:04 pm, Owen Roberts<o...@case.edu>    wrote:
>>>> George, I'm working on a IR Femtosecond laser system.   A ccd from
>>>> supercircuits, and a 23$ USB NTSC frame grabber gives me nice realtime
>>>> video on either a laptop or the system control PC.
>>
>>>> This gets you around the dying suppy of small NTSC monitors, plus I
>>>> can grab stills or video.  6 mm focal length lens seems about right
>>>> for short range applications.
>>
>>>> Steve
>>
>>> Thanks Steve, I'll look into USB NTSC frame grabbers.  It would be
>>> nice to sometimes get video onto a computer*.  But I hate the idea of
>>> time lag in a web cam.  We've got a few of the LCD 'back up' displays
>>> on order.  And several leads on the CCDs.  (Weldex in addition to
>>> super circuits.)
>>
>>> George H.
>>
>>> * I've got this semi-psychedelic video of a diode laser sweeping
>>> through the transverse modes of a confocal Fabry-Perot cavity.  With
>>> the mirror separation set to less than the confocal condition.
>>
>>     Please post that for us aged hippies..- Hide quoted text -
>>
>> - Show quoted text -
>
> OK Robert,  my first video&#4294967295;s on youtube.  But first here&#4294967295;s a &#4294967295;scope
> shot of a photodiode monitoring the output.  Each of the little bumps
> is a different transverse mode.
>
> http://bayimg.com/caofKAAdD
>
> And now some video&#4294967295;s.  Smoke &#4294967295;em if you&#4294967295;ve got &#4294967295;em, this will be a
> short &#4294967295;trip&#4294967295;.
>
>
> http://youtu.be/geQVSrXN3tE
>
> http://youtu.be/cZeyr0GzkOQ
>
> http://youtu.be/bsYy-xcjF0k
>
> I hope that works
>
> George H.

   aummmmmm...

   Like it!

George Herold wrote:
> 
> On Apr 19, 4:04 pm, Owen Roberts <o...@case.edu> wrote:
> > George, I'm working on a IR Femtosecond laser system.   A ccd from
> > supercircuits, and a 23$ USB NTSC frame grabber gives me nice realtime
> > video on either a laptop or the system control PC.
> >
> > This gets you around the dying suppy of small NTSC monitors, plus I
> > can grab stills or video.  6 mm focal length lens seems about right
> > for short range applications.
> >
> > Steve
> 
> Thanks Steve, I'll look into USB NTSC frame grabbers.  It would be
> nice to sometimes get video onto a computer*.  But I hate the idea of
> time lag in a web cam.  We've got a few of the LCD 'back up' displays
> on order.  


   Have you considered the NTSC LCD displays used as a second monitor
for portable DVD players?  The one I have is 7" diagonal & runs on 12
VDC.  Some sets of DVD player & monitor allow you to use both units for
displays for video games.


-- 
You can't have a sense of humor, if you have no sense.