Search found 390 matches

by microb
Fri Sep 18, 2020 7:58 pm
Forum: Microscopes and optics
Topic: Camera Setup with 160mm microscope
Replies: 0
Views: 37

Camera Setup with 160mm microscope

So if there is a camera set up like this, is it correct to think that 1) there doesn't need to be a relay lens and 2) the camera is seeing an inverted image of what a c-mount camera much closer to the bottom would see? If the focus plane is just above the trinocular camera mount, it seems like there...
by microb
Wed Sep 16, 2020 6:06 am
Forum: Microscopes and optics
Topic: Balplan DIC Lenses
Replies: 3
Views: 86

Re: Balplan DIC Lenses

How did you like the results of this system after your initial testing, by the way? I have thought about seeking one out given my own epi DIC woes. I want to get the camera set-up, so I haven't really done any testing. Then I want to get the phase contrast set up and running to learn from that. Bas...
by microb
Wed Sep 16, 2020 4:10 am
Forum: Microscopes and optics
Topic: Balplan DIC Lenses
Replies: 3
Views: 86

Balplan DIC Lenses

So I think I know why there are lenses above and below the DIC prism in the Balplan set up. I had thought the lenses meant that a Balplan was a 160mm/215mm no telan lens microscope, but it does have a telan lens, plus a correction doublet just above the objectives that basically is a common lens sha...
by microb
Mon Sep 14, 2020 8:55 pm
Forum: Microscopes and optics
Topic: Balplan Trinocular Example
Replies: 6
Views: 189

Re: Balplan Trinocular Example

apochronaut wrote:
Mon Sep 14, 2020 12:00 pm
Personally, I think their layouts need more pizzàzz. Some coloured stars of several sizes, maybe an exploding fireworks colour burst or two. Something to make the listings noticeable.
Fixed it. Or does it still need more cow bell?
by microb
Sun Sep 13, 2020 9:45 pm
Forum: Microscopes and optics
Topic: Balplan Trinocular Example
Replies: 6
Views: 189

Balplan Trinocular Example

In this listing, is there a relay lens of some sort in the trinocular path to the camera? The trinocular in a Balplan has a lens for only the eye pieces but not the camera. But that tube is taking a c-mount an I'm trying to figure out what the optics path is. https://www.ebay.com/itm/B-L-Bausch-Lomb...
by microb
Thu Sep 03, 2020 4:29 am
Forum: Microscopes and optics
Topic: Leica DMIL 160 objectives, and it's focusing
Replies: 3
Views: 374

Re: Leica DMIL 160 objectives, and it's focusing

They are fixed, and lens two has the flat side, possibly slightly concave, facing the camera. I got the drawing wrong.

The doublets are different sizes, not identical. The second is slightly smaller.
by microb
Mon Aug 31, 2020 10:51 pm
Forum: Microscopes and optics
Topic: It's an inverted upright: Leitz Leica Microscope Labovert FS DIC
Replies: 3
Views: 156

It's an inverted upright: Leitz Leica Microscope Labovert FS DIC

I never looked closely at one of these. It's an inverted upright. I think the stage z-moves for focus.

Leitz Leica Microscope Labovert FS DIC

https://www.ebay.com/itm/Leitz-Leica-Mi ... 3598376224
by microb
Sat Aug 29, 2020 5:27 am
Forum: Microscopes and optics
Topic: Refurbishing a microscope
Replies: 8
Views: 553

Re: Refurbishing a microscope

Yeah, that transverse chromatic aberration looks familiar. I am not familiar with Leica DM but I think I remember reading some posts here that the early Leica stuff was derived from the AO/Reichert 45 mm parfocal infinity system? Are you sure about the 160 mm tube length? I saw in your other thread...
by microb
Fri Aug 28, 2020 8:10 pm
Forum: Microscopes and optics
Topic: Leica DMIL 160 objectives, and it's focusing
Replies: 3
Views: 374

Re: Leica DMIL 160 objectives, and it's focusing

Here's a diagram someone sent me, so I augmented it.
by microb
Fri Aug 28, 2020 2:26 pm
Forum: Microscopes and optics
Topic: Leica DMIL 160 objectives, and it's focusing
Replies: 3
Views: 374

Leica DMIL 160 objectives, and it's focusing

The older Leica DMIL with the Leitz tri/binoculars takes 160 objectives. The turret moves up and down like an infinity inverted, which for infinity makes sense because changing that length to the telan lens does not matter. But with 160 objectives, how does that work? Wouldn't moving the objective a...
by microb
Fri Aug 28, 2020 2:12 am
Forum: Camera systems and imaging
Topic: Omax Amscope Touview Cameras
Replies: 2
Views: 156

Re: Omax Amscope Touview Cameras

Well I'm not finding the joy in these products. Maybe I can find someway to upgrade ToupView 3.7 that came with the USB 3 camera I got. This one does not do live stitch, but with video capture. The older version with the USB 2.0 ones does it with individual images. But even then the hardware sold wi...
by microb
Thu Aug 27, 2020 5:29 pm
Forum: Camera systems and imaging
Topic: Omax Amscope Touview Cameras
Replies: 2
Views: 156

Omax Amscope Touview Cameras

There are these c-mount microscope cameras available that ship with toupview. The standard camera apps on Windows can not see them, so you have to use the toupview that comes with it. And the toupview's can not see other toupview cameras. So you can't just run the latest software and see the older a...
by microb
Thu Aug 27, 2020 9:42 am
Forum: Microscopes and optics
Topic: Refurbishing a microscope
Replies: 8
Views: 553

Re: Refurbishing a microscope

Adding ND filter, upping the lamp, and then setting white balance:
by microb
Thu Aug 27, 2020 9:36 am
Forum: Microscopes and optics
Topic: Refurbishing a microscope
Replies: 8
Views: 553

Re: Refurbishing a microscope

So if I add in a blue filter to the lamp, the color evens out more.

Still image-wise, it is highly cropped with chromatic distortions and there's dirt somewhere.
by microb
Thu Aug 27, 2020 7:59 am
Forum: Microscopes and optics
Topic: Refurbishing a microscope
Replies: 8
Views: 553

Re: Refurbishing a microscope

Hobbyst46 wrote:
Thu Aug 27, 2020 7:53 am
Unfiltered light from a mercury lamp is bluish-white, not yellow, even near the end of life (AFAIK).
Checking the manual...

Ok. So I guess this is a Halogen bulb not Mercury. But I didn't think they went yellow either:
by microb
Thu Aug 27, 2020 7:21 am
Forum: Microscopes and optics
Topic: Refurbishing a microscope
Replies: 8
Views: 553

Re: Refurbishing a microscope

For the Leica DM IL, what camera set up for a smaller sensor on the c-mount should be used?

If I hold a card above the c-mount (no camera), I see my calibration slide's "=0.01mm" text. But with the camera there, it's heavily cropped.
by microb
Thu Aug 27, 2020 7:03 am
Forum: Microscopes and optics
Topic: Refurbishing a microscope
Replies: 8
Views: 553

Re: Refurbishing a microscope

So I can remove the diffuser by just drastically moving the condenser to far away, getting the lamp background more in focus, or closer till it hits a mechanical limit about 55mm away, which is what the lens is labeled S55. The light source blurs better there. But the strong chromatic aberrations ar...
by microb
Thu Aug 27, 2020 6:51 am
Forum: Microscopes and optics
Topic: Refurbishing a microscope
Replies: 8
Views: 553

Refurbishing a microscope

So I have some microscopes to fix up. What would be the be the best approach here? The optics path was cleaned. The cracked heat window was replaced with a close match tested with a spectrometer. I haven't cleaned the objectives at all. But I think the main problem are with the light source, a tilt ...
by microb
Wed Aug 26, 2020 7:54 pm
Forum: Microscopes and optics
Topic: epi illumination
Replies: 2
Views: 189

Re: epi illumination

It appears that they get the light collimated in that intermediate bit whwre the extra mirror is, maybe so you can also admit a laser or something like that. I'm curious about the two lenses on the left between the light source and the field stop that I'd like to understand. Why two? And how does t...
by microb
Wed Aug 26, 2020 7:21 am
Forum: Miscellaneous
Topic: Zeiss 7 place nosepiece
Replies: 8
Views: 365

Re: Zeiss 7 place nosepiece

I did not know that there was an Olympus BX version:
https://www.spachoptics.com/olympus-7-p ... u-r177.htm
by microb
Wed Aug 26, 2020 7:19 am
Forum: Miscellaneous
Topic: Zeiss 7 place nosepiece
Replies: 8
Views: 365

Re: Zeiss 7 place nosepiece

Which microscope is it for? https://www.ebay.com/i/254615567978?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=254615567978&targetid=935431405373&device=c&mktype=pla&googleloc=9031562&poi=&campaignid=10876471603&mkgroupid=107964302620&rlsatarget=pla-935431405373&abcId=9300401&merch...
by microb
Tue Aug 25, 2020 11:57 pm
Forum: Microscopes and optics
Topic: epi illumination
Replies: 2
Views: 189

epi illumination

I can understand this first set-up from Thor Labs:
Epi_General_D5-780.gif
Epi_General_D5-780.gif (22.7 KiB) Viewed 189 times
But this next one, with the two achromatic planars on the left throws me as to the theory in its design:
Epi_General_D9-700.gif
Epi_General_D9-700.gif (32.01 KiB) Viewed 189 times
by microb
Thu Aug 20, 2020 10:45 pm
Forum: Specimens, samples and slides
Topic: Lapped Petri Dishes
Replies: 5
Views: 210

Re: Lapped Petri Dishes

Maybe I've only seen cheap petri dishes. But they are not microscope slide quality flat bottoms to image through. Do people buy more expensive ones for better images? Does someone offer lapped petri dishes? commercial single petri dishes as well as multi-well plates, all with cover-slip bottoms. Id...
by microb
Thu Aug 20, 2020 9:27 pm
Forum: Specimens, samples and slides
Topic: Lapped Petri Dishes
Replies: 5
Views: 210

Lapped Petri Dishes

Maybe I've only seen cheap petri dishes. But they are not microscope slide quality flat bottoms to image through. Do people buy more expensive ones for better images? Does someone offer lapped petri dishes?
by microb
Thu Aug 13, 2020 10:44 pm
Forum: Microscopes and optics
Topic: B&L Interference Objective
Replies: 0
Views: 311

B&L Interference Objective

What is in the nose tip caps for this objective? i have this objective already, but I am missing parts.

https://www.ebay.com/itm/Bausch-and-Lom ... 2619!US!-1
by microb
Wed Aug 12, 2020 6:12 am
Forum: Illumination Techniques
Topic: Olympus U-UCV Lamp Adapter for Fluorescence
Replies: 1
Views: 554

Olympus U-UCV Lamp Adapter for Fluorescence

So I see these U-UCV’s sandwiched between Olympus BX’s large reflectance light path lamps, I guess Halogens. The smaller lens aims inside for directing more light for Fluorescence. The large lens points to the lamp, which already has a lens inside. The larger lens is a positive meniscus. The smaller...
by microb
Fri Aug 07, 2020 12:14 am
Forum: Illumination Techniques
Topic: Epi DIC woes
Replies: 59
Views: 6601

Re: Epi DIC woes

Scarodactyl wrote:
Thu Aug 06, 2020 11:08 pm
My ideal case is to find some that work well with my mitutoyo objectives--the Olympus ones are so close,
Were any of the double-blur images from Mitutoyo's?
by microb
Thu Aug 06, 2020 10:50 pm
Forum: Illumination Techniques
Topic: Epi DIC woes
Replies: 59
Views: 6601

Re: Epi DIC woes

So I ended up finding a great deal on a Nikon finite optiphot with epi DIC prisms and have it almost fully assembled (just with bd 20x and 40x dic objectives so far). I still need to hook up a proper illuminator so this shot was taken using a flashlight. Nevertheless, guess what I saw: So are you s...
by microb
Thu Jul 30, 2020 5:27 am
Forum: Microscopes and optics
Topic: Olympus IX70 Inverted Part
Replies: 6
Views: 424

Re: Olympus IX70 Inverted Part

Thanks. But the pdfs match the one I had mentioned earlier. I'm flipping through them to check. So I must be missing the part that mentions the TD versus VIS and the light transmission detector adapter details -- other than the picture that basically says it exists.