SEIDAM Systems selling three types of Televisors!

[Andrew Davie]

Here's an interesting find!

http://www.seidam.com/products/kelvins- ... mechtv.htm
SEIDAM Mechanical Televisors


With 28 holes, these systems are obviously not based on the club standard, but nonetheless look incredibly interesting. Has anyone seen these in operation?

1)
MTC1 mechanical camera
Product highlights

mechanical camera based on 28-lens 30cm diameter Nipkow disc
triple photodetector system scans the red, green and blue content of a subject
twin-bar lighting rig for optimal illumination of a subject
analogue outputs for studying the mechanical video signal

MTT1 mechanical televisor
Product highlights

mechanical televisor with 28-aperture punched Nipkow disc
LED lighting panel casts a full colour 40mm by 40mm picture through the Nipkow disc
controls for brightness and colour balance and disc rotation
audio output to listen to the mechanically generated video information

2)
MTC2 mechanical camera
Product highlights

mechanical camera based on 30-lens 30cm diameter Nipkow disc
controls to show the effect of disc rotation and desynchronisation
ring lighting rig for optimal illumination of a subject
analogue outputs for studying the mechanical video signal

MTT2 mechanical televisor
Product highlights

mechanical televisor with 30-aperture 1m diameter punched Nipkow disc
LED lighting panel casts a black and white 100mm by 100mm picture through the Nipkow disc
controls for brightness
audio output to listen to the mechanically generated video information

3)
MTC3 mechanical camera
Product highlights

mechanical camera based on 28-lens 30cm diameter Nipkow disc
servo controlled electronics maintains picture stability admidst changes in the ambient lighting and temperature
modular base-board mounted parts allow for high-visibility exhibition in plexi-glass cabinets
operates from 120V to 240V, 50Hz to 60Hz

MTT3 mechanical televisor
Product highlights

mechanical televisor with 28-aperture 37cm diameter Nipkow disc
LED panel contains quadrants of red, yellow and orange elements producing an authentic neon-colour picture
standard 50mm square picture area can be magnified with a fresnel lens
all parts visible via the modular base-board design (base-board dimensions identical to camera for ease of enclosure reproduction)



How amazing is that!

Cheers
A

[Stephen]

The MSTS2 system with the 30 line lens disc camera and the 30 line 1m diameter disc display look fantastic! However, the square format would only provide a 900 pixel resolution with a 10 cm square display. It would be better if it were to approximate the Baird standard with a 3:7 aspect ratio instead of 1:1, presuming that the system has vertical scanning.

It is nice to see the University of Glasgow involved in such a venture. Of course, John Logie Baird attended the University of Glasgow.

[DrZarkov]

They are looking really great! I wonder how much they will cost?

[Panrock]

I wonder if this is a fully-worked up system as yet or they are just gauging interest?

I'm also curious to know how they're getting usable sensitivity for their colour camera. Semiconductor sensors generally have excess infra-red response which needs filtering out - leaving behind poor sensitivity, and getting adequate blue response can also be a problem.

And unless they're also using dichroic filter blocks, the situation gets even worse.

Making a good mechanical colour camera is far harder than making a colour monitor.

Steve

[Stephen]

Yes, Steve, I was wondering the same thing, as well as where they get their panchromatic photomultipliers! One thing that would help the sensitivity of the camera is the lens disc. The lenses can capture much more light than ordinary apertures. As best as I can make out, the lenses seem to have a relatively large diameter. Even with that, the camera would probably also have to employ dichroic filters as you suggest.

I suspect that they are working on prototypes and gauging interest interest in them. The 28 or 30 line square formats are odd and not very appealing, since they would render maximum resolutions of 784 and 900 pixels, respectively. In my opinion the 32 line 2:3 aspect ratio club standard of 1536 pixels has the minimum level of acceptable resolution.