Re: [CAD_CAM_EDM_DRO] PIC DRO stupid question

james owens wrote:

> I have just recieved this email from USDigital and thought it should
> be posted.
>
> Terry.
>
> Terry:
>
> When we introduce our new optical encoder module, we hope to have 250
> and 500 lines per inch models. I think that even 1000 lines per inch
> may be possible with the new module. The problem is that I still don't
> have a date for the modules release. The last I heard was some time in
> the second half of this year. For now we can only offer you the 200,
> 300, 360 lines per inch models because we are limited by the
> resolutions available in the HP HEDS optical encoder modules. I will
> save your request for the 500 and 1000 LPI models and notify you when
> that becomes available. We appreciate your business!

Really, if someone can come up with accurate grating patterns on film or
glass, it is fairly
easy to make your own linear encoder. Does anyone have any ideas on
where to get
such grating patterns?

Jon