Search found 166 matches

by microb
Mon Apr 06, 2020 7:53 am
Forum: Microscopes and optics
Topic: DIC Prism Design
Replies: 3
Views: 84

Re: DIC Prism Design

If you need equations to determine the alpha, and beta angles go find it in Vol2 of Advanced Light Microscopy by Maksymilian Pluta. I'll try to keep looking for that book, but if you have the equations, please let me know. I can't even do an interlibrary loan as the libraries are closed for a while...
by microb
Mon Apr 06, 2020 12:15 am
Forum: Microscopes and optics
Topic: DIC Prism Design
Replies: 3
Views: 84

DIC Prism Design

I'm going to take a look at the following as a possible reference on DIC prism design. If anyone else is knowledgeable, please let me know:

https://patents.google.com/patent/US20010040723A1
by microb
Fri Apr 03, 2020 7:41 pm
Forum: Microscopy accessories
Topic: DIC, Analyzers, and Compensators
Replies: 6
Views: 3620

Re: DIC, Analyzers, and Compensators

I think you may find quartz easier to lap and polish. No cleavage, and cerium or zirconium oxide will produce a perfevt polish if the surface is well prepped. Is optical quartz proving to be that expensive? It's not expensive. I just haven't found a supplier just yet. Some people in Silicon Valley ...
by microb
Fri Apr 03, 2020 6:53 pm
Forum: Microscopy accessories
Topic: DIC, Analyzers, and Compensators
Replies: 6
Views: 3620

Re: DIC, Analyzers, and Compensators

Hi Ted, I can help you with BX, I can measure slots for components and send you the drawings, eg U-DICT, U-DICR, Condenser Prisms, etc. Hi, Any specs on the BX parts would be appreciated. I've been focusing on the first of three parts 1) lapping and getting that process in place for calcite. I have...
by microb
Thu Apr 02, 2020 8:22 am
Forum: Microscopes and optics
Topic: Leica DMIL Lamp Replacement IR Absorber
Replies: 6
Views: 105

Re: Leica DMIL Lamp Replacement IR Absorber

cheap IR-blocker is a KG5 or KG3 filter from Schott. These are absorption filters. They can be used even with a 100W mercury lamp, although if exposed for a long period they eventually crack. These are KG1 at $6 each bought as a set of ten, which includes shipping divided over the ten. I couldn't g...
by microb
Wed Apr 01, 2020 11:54 pm
Forum: Microscopes and optics
Topic: Leica DMIL Lamp Replacement IR Absorber
Replies: 6
Views: 105

Re: Leica DMIL Lamp Replacement IR Absorber

Hi, I used a USB 2000+ Ocean spectrometer. I set up three LED lights, one for each run. The IR LED is 850nm LED, and as shown does have a varying lobe, like the other LEDs shown. So when looking for a replacement glass window (32x2mm) there are filters listed as IR blockers, but the Leica window was...
by microb
Wed Apr 01, 2020 6:01 am
Forum: Microscopes and optics
Topic: Leica DMIL Lamp Replacement IR Absorber
Replies: 6
Views: 105

Leica DMIL Lamp Replacement IR Absorber

So I finally got a replacement for the cracked optics window, that with testing proves to be a IR absorber -- not a blocker, absorber. 32mm dia, 2mm thick, slight blue tint, spectrums show reference IR, VIS, and UV in blue; with green being the cracked window and the gray the new. The block machine ...
by microb
Wed Apr 01, 2020 12:48 am
Forum: Microscopes and optics
Topic: Mitutoyo finescope fs100
Replies: 50
Views: 6980

Re: Mitutoyo finescope fs100

Sorry, went looking back at your pictures. Your epi doesn't have the rectangular slide openings I thought you would have. But it is a trinocular. Can you rig a camera to aim down the tube and take some test images? Don't worry about getting a perfect fitting adapter. Just something so that camera do...
by microb
Wed Apr 01, 2020 12:39 am
Forum: Microscopes and optics
Topic: Mitutoyo finescope fs100
Replies: 50
Views: 6980

Re: Mitutoyo finescope fs100

Cordial greetings. I notice that this microscope (in reflected light) produces images that are totally lacking in contrast, flat and of very poor quality...completely washed out and cloudy. Looking for the possible fault,... ... by placing two external lights on each side of the sample, the contras...
by microb
Wed Apr 01, 2020 12:22 am
Forum: Microscopy accessories
Topic: Zeiss Axioplan2 Mot Iris Slide
Replies: 3
Views: 82

Re: Zeiss Axioplan2 Mot Iris Slide

It's Fusion 360. Hobbyist can use it for free. I have a license. Don't ask me what extras you get for paying. I haven't found it yet.
by microb
Tue Mar 31, 2020 2:47 am
Forum: Microscopy accessories
Topic: Zeiss Axioplan2 Mot Iris Slide
Replies: 3
Views: 82

Re: Zeiss Axioplan2 Mot Iris Slide

Angle cross section:
by microb
Tue Mar 31, 2020 2:43 am
Forum: Microscopy accessories
Topic: Zeiss Axioplan2 Mot Iris Slide
Replies: 3
Views: 82

Zeiss Axioplan2 Mot Iris Slide

Modeled the insides of a Zeiss Axioplan 2 iris slide with its adjusting lever.

Only the iris twister vertical pole is not Zeiss sizings, as its for the new irises I bought online.
by microb
Tue Mar 17, 2020 1:06 am
Forum: For forum members who want to buy and sell equipment
Topic: Zeiss Axiomat
Replies: 5
Views: 959

Re: Zeiss Axiomat

I'm just curious since I have some of the Axiomat slides: What are these two slides?

Thanks,
Ted
by microb
Thu Mar 12, 2020 4:09 am
Forum: Microscopes and optics
Topic: Leica DM IL Light Asembly Clean Up
Replies: 1
Views: 3276

Re: Leica DM IL Light Asembly Clean Up

So I did a better test with an Ocean spectrometer and found that the window is a IR absorbing window. The picture shows a IR-850 flashlight overly bright in blue. The green shows what the spectrometer sees in green. It's not a IR cut-off, but what is being sold as a IR/heat absorption window. I foun...
by microb
Sun Mar 08, 2020 11:06 pm
Forum: Microscopes and optics
Topic: Leica Reichert Jung Polyvar (models)
Replies: 46
Views: 11163

Re: Leica Reichert Jung Polyvar (models)

Has anyone had success mounting a digital camera on the side port of a Polyvar MET like the one I posted pictures of? Either the side port or PREFERABLY fabricating and modifying something that will work on the TOP of the MET microscope as some models have? I'd like to also put a an attachment abov...
by microb
Sun Mar 08, 2020 8:30 am
Forum: Microscopes and optics
Topic: Leica DM IL and PHACO 2 And 160/0.17
Replies: 12
Views: 3310

Re: Leica DM IL and PHACO 2 And 160/0.17

Thanks.

160/0.6 to 1.6
by microb
Sun Mar 08, 2020 6:55 am
Forum: Microscopes and optics
Topic: Leica DM IL and PHACO 2 And 160/0.17
Replies: 12
Views: 3310

Re: Leica DM IL and PHACO 2 And 160/0.17

So does this adjust to vary the thickness? https://www.ebay.com/itm/Leitz-40X-EF-Phaco-2-Phase-Contrast-Microscope-Objective-160mm-Part-519769/383354798455?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D708db484d992458f952e0099dacba84f%26pid%3D100675%26rk%3D4%26rkt...
by microb
Sun Mar 08, 2020 5:27 am
Forum: Microscopes and optics
Topic: Leica DM IL and PHACO 2 And 160/0.17
Replies: 12
Views: 3310

Re: Leica DM IL and PHACO 2 And 160/0.17

So for PH1, 3mm inner, 3_.38_.38 outer. Fingers .53.
by microb
Sun Mar 08, 2020 5:17 am
Forum: Microscopes and optics
Topic: Leica DM IL and PHACO 2 And 160/0.17
Replies: 12
Views: 3310

Re: Leica DM IL and PHACO 2 And 160/0.17

Fixed the mask dimensions for PH2. Inner diameter is 5mm. Outer is 5 + .42 + .42. Web fingers are .6mm wide.
by microb
Sun Mar 08, 2020 4:50 am
Forum: Microscopes and optics
Topic: Leica DM IL and PHACO 2 And 160/0.17
Replies: 12
Views: 3310

Re: Leica DM IL and PHACO 2 And 160/0.17

Hi Pete, So what you are stating about the thickness of a petri dish is what led me to posting my question. The .17mm thickness is not applicable to an inverted. So what do people use on a Leica DM IL? It has PH2 and PH3 (or at least people are selling the annulus slide loaded with such), but all th...
by microb
Sun Mar 08, 2020 4:39 am
Forum: Microscopes and optics
Topic: Leica DM IL and PHACO 2 And 160/0.17
Replies: 12
Views: 3310

Re: Leica DM IL and PHACO 2 And 160/0.17

So I'm remeasuring again.

Thanks,
Ted
by microb
Sun Mar 08, 2020 4:20 am
Forum: Microscopes and optics
Topic: Leica DM IL and PHACO 2 And 160/0.17
Replies: 12
Views: 3310

Re: Leica DM IL and PHACO 2 And 160/0.17

Modeled the PHACO2 S55 annulus. Will try printing out a PH1 based on some data. I have a S55 PH2 here to check things against.

Will then try to test the microscope with a PHACO1 objective.
by microb
Sat Mar 07, 2020 7:08 pm
Forum: Microscopes and optics
Topic: Leica DM IL and PHACO 2 And 160/0.17
Replies: 12
Views: 3310

Leica DM IL and PHACO 2 And 160/0.17

Hi, I've been mostly focused on metallurgical and metrology microscopes, so I have not used inverted. So with an inverted microscope like the Leica/Leitz DM IL (pre-LED model), what PHACO 2 objective is valid to use? The only ones I'm finding are not 160/- but 160/.017's and that would mean a cover ...
by microb
Mon Mar 02, 2020 10:45 pm
Forum: Beginner's corner
Topic: Polarising
Replies: 19
Views: 7094

Re: Polarising

Here's a link where this guys says to frost the slides:

https://youtu.be/zbG5E07EQy0?t=435
by microb
Mon Mar 02, 2020 6:11 am
Forum: Microscopes and optics
Topic: Leica DM IL Light Asembly Clean Up
Replies: 1
Views: 3276

Leica DM IL Light Asembly Clean Up

So I've been trying to take this optic window off. It had an expanding ring to hold which I got out. But the cement would not give. So I finally had a chance to try again, this time with hot water. I checked with a spectrometer, and this window does not filter out UV or IR. I'm guessing it is just a...
by microb
Sat Feb 29, 2020 6:43 am
Forum: Microscopes and optics
Topic: Leica Reichert Jung Polyvar (models)
Replies: 46
Views: 11163

Re: Leica Reichert Jung Polyvar (models)

Hi,

What kind of milling do you have? You mentioned doing new parts and adapters.

Thanks,
Ted
by microb
Fri Feb 28, 2020 7:47 am
Forum: Microscopes and optics
Topic: Olympus U-TLU Tube Lens Single Port
Replies: 0
Views: 3580

Olympus U-TLU Tube Lens Single Port

Made a Fusion model of an Olympus U-TLU single port tube. Metal bracket at the bottom and lens not included in model yet. For some reason they put three shims between the top and bottom halves. Top shim, black 1mm al, middle .33mm brass, and bottom matching top. I thought they would have just machin...
by microb
Thu Feb 27, 2020 7:16 am
Forum: Beginner's corner
Topic: Polarising
Replies: 19
Views: 7094

Re: Polarising

When using adhesive on two CNCed acrylic lenses, they recommend not smoothing the interfacing surfaces because the adhesive sill optically smooth it all out. But that assumes a match in the index of refraction that smooths out the light path. AN artist putting together dichroic glass can hide the in...
by microb
Thu Feb 27, 2020 12:33 am
Forum: Microscopes and optics
Topic: Mitutoyo finescope fs100
Replies: 50
Views: 6980

Re: Mitutoyo finescope fs100

The Newport instructions give that as a first step to try (air blowing).