Safetyscan lens holder, anyone developed one yet?

[norty303]

I'm sure Pangolin already have a solution Norty, maybe just not market ready.

I know they have, but if they choose to not bring it to market due to other commitments (such as oooh, let me think, Beyond 2, scanners, Gemini, etc, etc), then maybe we can benefit from some of their work done already, was my point.

[Pangolin]

Hi all,

Great discussion you are having here. We conceived of a mount, but simply never had time to produce it up until now. So many machine parts to produce, what with the scanners and other projects, so these parts got pushed to the back burner.

The mount shown in an earlier post looked fundamentally OK as far as I can tell. However, I would remind everyone that there needs to be three degrees of freedom provided in order to get the optimal results. As far as I can tell (only from looking at the drawing but not reading the text) the mount did indeed provide the three degrees of freedom needed, but I might have missed something, so this should be reviewed. Note that the lens may need to be tipped inward at the bottom so that pivot point needs to be located outward a bit.

I am about to travel to a tradeshow and will be gone for more than a week. Plus, I do not routinely monitor posts on PL any more (simply too much going on). So unless someone sends me an email and calls my attention to a particular post, I will not see any replies to this message.

Anyone can download the SafetyScan manual (I think that is what someone referred to as "book of words") here:
http://www.pangolin.com/_Files/SafetyScanManual.pdf


Bill

[andy_con]

so something like this

[White-Light]

so something like this

Whatever tilt mechanism is used its going to need to lock solidly bearing in mind this is a safety device and to have it fall out of place could be disastrous. It makes it more complex but I wonder if it should be secured at the top as well as bottom or at least secure at two points at the bottom.

[andy_con]

^^ no really? a safety device you say!

it will be secure dont worry

[White-Light]

Andy have you seen these?

http://www.thorlabs.co.uk/navigation.cfm?guide_id=131

Wonder if these adjustment screws could be incorporated to give precision rotation.

EDIT: The manual screws I mean - new link added

[norty303]

That looks like a pretty good effort Andy.
I think the side pieces can be significantly shorter, I reckon the max vertical movement anyone is likely to need is 20-30mm total, and thats probably being generous.
Maybe have the pinch piece on the round bar central purely for aesthetic reasons

Now, how wide to make the bar.....? I suspose if you used threaded rod all the way through (can you get that?) people could cut the bar to suit their mounting position

[norty303]

One thing to think about is how easily/quickly it can be removed.
Assuming the side rails stay fixed to the projector, would you just undo the fixings in the ends of the bar, and withdraw that whole assembly?

[andy_con]

you dont want a threaded bar other wide it will be a right pain to adjust.

there will be a grub screw or two to lock it in place.

side bar length can be altered easy

[norty303]

I'm not getting the grub screw bit I'm afraid. If the bar needs to be held in place in the side slots, whatever the fixing method is, needs to be attached to the bar, not the slot assembly. Otherwise you're restricted to fixed positions.
Or are you suggesting a really long one from the bottom and top to fix the bar that way? (a bit like a motorbike rear spindle chain adjuster)



Can you explain?