Vision Engineering Lynx Dynascope Help!  - Page 1
Forum section: electronics / testgear

author: MS38999
author_rank: Newbie
timestamp: April 05, 2020, 12:58:09 am
content: Ok, this is easy enough... I just need someone who owns or operates a Lynx or similar Dynascope to relay their knowledge to me.What id specifically like to know is about the lenticular spinning disk; that reflective, mirror-looking thing in the back of the head. What's it's purpose? I mean, what is it's function? I ask because I recently bought one (the u-scope, not the disc). When I apply only light (ie, head & disk not powered) I see a magnified image. Then I turn the scope on and the disk starts spinning, and no change; I still see the magnified image. So I ask, what is the reason for this disk? I mean, I'm seeing an image regardless if I have power to the head (and the disk is thus spinning), or if I don't have power to the head,and the disk isn't spinning; the quality of the displayed image is about the same in both instances . I get the feeling I can remove the whole thing and still see an image (because it doesn't matter if the disk has power applied and is spinning or if it doesn't have per applied and is not spinning). So, from your experience, what an I supposed to see:1. When I apply power to the head and the disk is spinning, and2. I cut power to the head and had only the illuminator working.What am I supposed tosee in both cases?Thanks for your share!

author: JDubU
author_rank: Frequent Contributor
timestamp: April 05, 2020, 01:21:45 am
content: To see the difference, move your head around while viewing the image:https://www.visioneng.us/about/technology/dynascope/

author: MS38999
author_rank: Newbie
timestamp: April 05, 2020, 02:24:40 am
content: Now I went there and it was just their promotional web page for the Lynx. There was no 'virtual' type presentation to show how the Lynx looks while the mobile device is moving. Besides, the website isn't even optimized for mobile devices, thus I can't see how moving ones head around while on aPC will do any good... Unless of course, yo mama smoked too much crack, resulting in the symptom set you just described with uncanny accuracy...Seriously guys, I need help here. No oxygen wasters; just help. And know your help will be immensely appreciated.

author: JDubU
author_rank: Frequent Contributor
timestamp: April 05, 2020, 03:10:19 am
content: Wow. That's some serious attitude for someone asking for help!Here is the key bit of information from that web page:QuoteWhen you look into the objective lenses of a normal stereo microscope, the alignment of your eyes is critical to seeing the full objective field of view as well as being able to properly get binocular vision.This is due to a small "exit pupil" (see:https://en.wikipedia.org/wiki/Exit_pupil). The pupils of your eyes, ideally, would need to perfectly match the size and position of the optical exit pupil of the microscope. This is the3mmthat is in the above quote. Any head movement would deviate from that ideal eye pupil to optical exit pupil alignment.The Dynascope's claim is that the lenticular mirrored surface of the spinning wheel increases the effective exit pupil to about40mm. That way, the visualization of the image is much less sensitive to head movement.

author: Mechatrommer
author_rank: Super Contributor
timestamp: April 05, 2020, 03:15:53 am
content: Quote from: MS38999 on April 05, 2020, 02:24:40 amVE doesnt put that rotating disc for entertainment. its their patent trademark. as jdubu said,view through the lens and move your head around while looking at a specimen 1) while the disc is not rotating and 2) turning it on while continue moving your head, there will be some angle enhancement/extension difference. esp while viewing at extreme side of the lens 360 degree left top right bottom. i own the older version Dynascope TS-2. but if you think you will be happy without it rotating then suit yourself.

author: MS38999
author_rank: Newbie
timestamp: April 05, 2020, 11:15:13 pm
content: Sorry about that. I thought you were asking that I move my head while looking at the VE webpage. Instead, you meant that I should move my head as I look into the microscope. The misunderstanding is all my fault. Again, sorry...

author: MS38999
author_rank: Newbie
timestamp: April 05, 2020, 11:21:15 pm
content: Ok, you describe the difference between stationary mirror and rotating mirror as a 'slight image enhancement, " correct? There really doesn't seem to be much of a difference. From my perspective, the major difference is that when the mirror is staying, the image appears pixelated (from all those little lenticular lenses). Applying power and the pixelation goes away, but no other benefit is noted.Is this how your T2 behaves? I mean, with it turned off and only a powerful light shining on the specimen, do you still see the image just fine (albeit pixelated)?

author: Mechatrommer
author_rank: Super Contributor
timestamp: April 06, 2020, 01:14:36 am
content: while the disc is not spinning, find a viewing angle that you cant see the image (blind spot), but still inside/through the lens path (not behind the plastic enclosure) from there turn on the disc and you should see the image as the disc start spinning. its for "viewing angle" enhancement, not "image quality" enhancement. the smoothed pixelated effect is just secondary effect, in fact, just a flat and still mirror will give better quality, but viewing angle will be limited.