Re: [neonixie-l] eBay: Omni-Ray for sale!

2016-10-05 Thread John Rehwinkel
> The pattern on the film isn't that difficult to figure out, though printing 
> it in perfect alignment at exactly the right scale might be a challenge. For 
> each "lenslet" (pixel) in the array, there must be 12 possible clear dots in 
> the film, aligned similarly to the bulbs but inverted. For each displayable 
> symbol, the dot corresponding to that bulb's position will be either clear or 
> black. So to light a "0", the dots on the film in the zero position in front 
> of each lenslet must be set appropriately for the shape of the "0". If you're 
> really clever you could even try antialiasing the curved and angled edges of 
> the symbols...

Exactly.  It's probably possible to knock it out in a couple dozen lines of 
PostScript (possibly by abusing the halftone screen mechanism), with your 
choice of fonts.

- John

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Re: [neonixie-l] eBay: Omni-Ray for sale!

2016-10-05 Thread A.J. Franzman
The pattern on the film isn't that difficult to figure out, though printing 
it in perfect alignment at exactly the right scale might be a challenge. 
For each "lenslet" (pixel) in the array, there must be 12 possible clear 
dots in the film, aligned similarly to the bulbs but inverted. For each 
displayable symbol, the dot corresponding to that bulb's position will be 
either clear or black. So to light a "0", the dots on the film in the zero 
position in front of each lenslet must be set appropriately for the shape 
of the "0". If you're really clever you could even try antialiasing the 
curved and angled edges of the symbols...

Near the top and bottom center of the Message Assembly, should be several 
pixels with 10 of the 12 possible dots being clear - every symbol but the 
decimals will light those pixels where they all intersect. Conversely, the 
upper corners of the film should be solid black since nothing should ever 
be lit there; judging by the size of the "3" and "4" shown on Dieter's 
page, none of the symbols should occupy the full width of the top of the 
screen, nor even extend fully into one upper corner.

On Saturday, October 1, 2016 at 10:37:55 PM UTC-7, jrehwin wrote:
>
> > I have a couple of heavily damaged units. They have been exposed to bad 
> environment and the film with the pattern that creates the digits are 
> mostly destroyed. 
>
> The lenses would be hard to re-create, but the film might be doable by 
> laser printing a pattern onto the sort of clear acetate sheets used for 
> transparencies.  There would be some geometry and mathematics involved to 
> figure out the pattern to print, but once that was solved, you could make 
> custom symbols.  You might even be able to make coloured symbols if you had 
> a way to print transparent coloured ink (or you could use coloured bulbs or 
> LEDs, but with with the right pattern, you could have multicoloured 
> symbols). 
>
> - John 
>
>

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Re: [neonixie-l] eBay: Omni-Ray for sale!

2016-10-01 Thread John Rehwinkel
> I have a couple of heavily damaged units. They have been exposed to bad 
> environment and the film with the pattern that creates the digits are mostly 
> destroyed.

The lenses would be hard to re-create, but the film might be doable by laser 
printing a pattern onto the sort of clear acetate sheets used for 
transparencies.  There would be some geometry and mathematics involved to 
figure out the pattern to print, but once that was solved, you could make 
custom symbols.  You might even be able to make coloured symbols if you had a 
way to print transparent coloured ink (or you could use coloured bulbs or LEDs, 
but with with the right pattern, you could have multicoloured symbols).

- John

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[neonixie-l] eBay: Omni-Ray for sale!

2016-09-26 Thread 'marta_kson' via neonixie-l
Not my auktion.

There is an Omni-Ray display module up for sale on eBay! USD28 BiN. Maybe 
of some interest for someone here.

http://www.ebay.com/itm/NEW-Vintage-Burroughs-Spherical-Display-SD-12-by-Motorola-NOS-/232058166002?hash=item3607be9af2:g:I8QAAOSw6n5XvRdF

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