Video monitors and CCD cameras.

> How expensive are the camera's?  We were paying ~$50.  The cables
> always break at the connector though.
>
> George H.
>

Here is the first hit on black paint transparent infrared:
> http://www.infraredcoatings.com/

Regarding your application, while not a genuine Sony HAAD, why not buy 
one of these and try it out.
> http://www.supercircuits.com/Security-Cameras/Board-Cameras/PC302XS

I suspect if you call Supercircuits and tell them you need to see NIR, 
they would know which cameras are good enough. The Chinese vendors 
probably know which are good as NIR too.

The really low light NIR cameras aren't this cheap, but you are looking 
at a very strong source.  You might get away with a pinhole camera.

I've bought a few cameras from Supercircuits over the years. Not the 
best, but pretty decent for the price. Watec makes better NIR stuff, but 
it isn't cheap.

Nearly every low light CCD I've purchased over the years developed a hot 
pixel. These guys really crank up the gain, so you see the defect in the 
sensor as they age. But a hot pixel shouldn't matter in your application.

If there existed a cheap R72 filter, that would probably make finding 
the spot really easy since the SNR would be improved. I've used Watec 
low light CCDs with R72 in front outdoors or by a quartz light and you 
would swear the glass is clear.

George Herold wrote:
> 
> For one of our instruments, Diode laser spectroscopy, (http://
> www.teachspin.com/instruments/diode_laser/index.shtml)
> We use a  CCD camera and little TV to image the NIR laser spot and
> observe the Rubidium fluorescence.  (Used to tune the laser to the
> correct wavelength.)
> 
> So we didn�t buy a lifetime supply of either the cameras or TVs and
> now they are both disappearing.   (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  This had two issues.  First it has a NIR filter over the CCD
> element that had to be pried off.  And 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�s have 6� x 8� foot print (15mm x 20mm) so they don�t
> take up that much room on the optical bread board.  It is nice to have
> the monitor �right in your face� as you are aligning the grating.  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�m looking for a new solution.
> Here�s some ideas.
> 1.) Just find a cheap �web cam� and let everyone use their laptop
> computer.
>     I have some issue�s with this.
> a.) will the camera work with all laptops?
> b.) requires user to have laptop
> 
> 2.) Video surveillance gear.  What 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


   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


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

On Apr 17, 8:10=A0pm, Lineshape <linesh...@yahoo.com> wrote:
> On Apr 17, 12:03=A0pm, 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.
>
> Hi George,
>
> We have bought board-level ccd cameras from supercircuits for around
> $20. =A0The power supplies might be another $10. =A0You can still get
> handheld LCD tv's that accept external inputs for around $50-75. =A0You
> might need an RCA to BNC adapter, depending.
>
> Frank- Hide quoted text -
>
> - Show quoted text -

Supercircuits, check.  Thanks Frank.

George H.

On Apr 18, 12:10=A0am, miso <m...@sushi.com> wrote:
> > How expensive are the camera's? =A0We were paying ~$50. =A0The cables
> > always break at the connector though.
>
> > George H.
>
> Here is the first hit on black paint transparent infrared:
>
> >http://www.infraredcoatings.com/
>
> Regarding your application, while not a genuine Sony HAAD, why not buy
> one of these and try it out.
>
> >http://www.supercircuits.com/Security-Cameras/Board-Cameras/PC302XS
>
> I suspect if you call Supercircuits and tell them you need to see NIR,
> they would know which cameras are good enough. The Chinese vendors
> probably know which are good as NIR too.
>
> The really low light NIR cameras aren't this cheap, but you are looking
> at a very strong source. =A0You might get away with a pinhole camera.
>
> I've bought a few cameras from Supercircuits over the years. Not the
> best, but pretty decent for the price. Watec makes better NIR stuff, but
> it isn't cheap.
>
> Nearly every low light CCD I've purchased over the years developed a hot
> pixel. These guys really crank up the gain, so you see the defect in the
> sensor as they age. But a hot pixel shouldn't matter in your application.
>
> If there existed a cheap R72 filter, that would probably make finding
> the spot really easy since the SNR would be improved. I've used Watec
> low light CCDs with R72 in front outdoors or by a quartz light and you
> would swear the glass is clear.

Thanks miso,  Supercircuits looks like the vendor I've been seeking.
Sometimes I've got plenty of light.. but in others I get a bit
starved.  Running right at threshold when aligning things.  And then
there's an experiment where the students can build an unequal arm
Michelson interferometer to measure the wavlength.  You've gotta find
the fringes with the camera and that can be a bit of a challenge.

George

On Apr 18, 8:12=A0am, "Michael A. Terrell" <mike.terr...@earthlink.net>
wrote:
> George Herold wrote:
>
> > For one of our instruments, Diode laser spectroscopy, (http://
> >www.teachspin.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
>
> =A0 =A0Small LCD monitors for car backup cameras:
>
> <http://www.ebay.com/sch/i.html?_from=3DR40&_trksid=3Dp5197.m570.l1313&_n=
k...>
>
> =A0 I have one of these to check my mailbox from the house:
>
> http://www.ebay.com/itm/370596974843
>
> --
> You can't have a sense of humor, if you have no sense.- Hide quoted text =
-
>
> - Show quoted text -

Those look great!  Thanks Michael

Do you have the camera inside the mail box?  Or is it a newspaper
'tube' with an open front?

George H.

George Herold wrote:
> 
> Michael A. Terrell wrote:
> >
> >    Small LCD monitors for car backup cameras:
> >
> > <http://www.ebay.com/sch/i.html?_from=R40&_trksid=p5197.m570.l1313&_nk...>
> >
> >   I have one of these to check my mailbox from the house:
> >
> > http://www.ebay.com/itm/370596974843
> 
> Those look great!  Thanks Michael
> 
> Do you have the camera inside the mail box?  Or is it a newspaper
> 'tube' with an open front?


   It's in the house right now, but that window will soon be removed to
install a new air conditioner.  Then it will be mounted under an eve,
with a clear shot at the mailbox.  It saves me a painful walk to the
road on days with no mail.  I can see them open the door from the angle
wher the camera is located.


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

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,

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.

Thanks

hamilton

On Wed, 18 Apr 2012 10:29:24 -0400, "Michael A. Terrell"
<mike.terrell@earthlink.net> wrote:

>
>George Herold wrote:
>> 
>> Michael A. Terrell wrote:
>> >
>> >    Small LCD monitors for car backup cameras:
>> >
>> > <http://www.ebay.com/sch/i.html?_from=R40&_trksid=p5197.m570.l1313&_nk...>
>> >
>> >   I have one of these to check my mailbox from the house:
>> >
>> > http://www.ebay.com/itm/370596974843
>> 
>> Those look great!  Thanks Michael
>> 
>> Do you have the camera inside the mail box?  Or is it a newspaper
>> 'tube' with an open front?
>
>
>   It's in the house right now, but that window will soon be removed to
>install a new air conditioner.  Then it will be mounted under an eve,
>with a clear shot at the mailbox.  It saves me a painful walk to the
>road on days with no mail.  I can see them open the door from the angle
>wher the camera is located.

Rural-style mailbox by the road?  Make up an RF transmitter activated
by a Cherry switch when the door opens.
		
                                        ...Jim Thompson
-- 
| James E.Thompson, CTO                            |    mens     |
| Analog Innovations, Inc.                         |     et      |
| Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
| Phoenix, Arizona  85048    Skype: Contacts Only  |             |
| Voice:(480)460-2350  Fax: Available upon request |  Brass Rat  |
| E-mail Icon at http://www.analog-innovations.com |    1962     |
             
I love to cook with wine.     Sometimes I even put it in the food.

Jim Thompson wrote:
> 
> On Wed, 18 Apr 2012 10:29:24 -0400, "Michael A. Terrell"
> <mike.terrell@earthlink.net> wrote:
> 
> >
> >George Herold wrote:
> >>
> >> Michael A. Terrell wrote:
> >> >
> >> >    Small LCD monitors for car backup cameras:
> >> >
> >> > <http://www.ebay.com/sch/i.html?_from=R40&_trksid=p5197.m570.l1313&_nk...>
> >> >
> >> >   I have one of these to check my mailbox from the house:
> >> >
> >> > http://www.ebay.com/itm/370596974843
> >>
> >> Those look great!  Thanks Michael
> >>
> >> Do you have the camera inside the mail box?  Or is it a newspaper
> >> 'tube' with an open front?
> >
> >
> >   It's in the house right now, but that window will soon be removed to
> >install a new air conditioner.  Then it will be mounted under an eve,
> >with a clear shot at the mailbox.  It saves me a painful walk to the
> >road on days with no mail.  I can see them open the door from the angle
> >wher the camera is located.
> 
> Rural-style mailbox by the road?  Make up an RF transmitter activated
> by a Cherry switch when the door opens.


   I have that, (with a tilt switch) but I get a lot of boxes that won't
fit in the oversize mailbox.  One day the mailman delivered over 120
pounds of books in the driveway.  The camera lets me see them pull into
the driveway and gives me more time to limp to the door to meet them.  I
am going to build a lockbox that they can leave large packages when I'm
not home, or too sick to get out of bed.

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

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.

   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.


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