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by 92111
Tue Feb 19, 2019 11:24 am
Forum: Illumination Techniques
Topic: New bought a leitz POL condenser
Replies: 8
Views: 6080

Re: New bought a leitz POL condenser

ChrisR wrote:Not sure what that's showing.. :? Have you joined a pol and a phase condenser?

You could use a loose sheet of pol matrial and just put it over the light, then use a DF/phase condendser?
Yes
Thanks for advise ,It can 旋转 the pol material easily.i can change it back anytime
I did this Just for fun
by 92111
Tue Feb 19, 2019 1:32 am
Forum: Illumination Techniques
Topic: New bought a leitz POL condenser
Replies: 8
Views: 6080

Re: New bought a leitz POL condenser

thanks mike

Found here,not matched very well.
by 92111
Mon Feb 18, 2019 12:44 pm
Forum: Illumination Techniques
Topic: New bought a leitz POL condenser
Replies: 8
Views: 6080

Re: New bought a leitz POL condenser

question3,what is the difference?
by 92111
Mon Feb 18, 2019 12:42 pm
Forum: Illumination Techniques
Topic: New bought a leitz POL condenser
Replies: 8
Views: 6080

Re: New bought a leitz POL condenser

question 2,what's this??
by 92111
Mon Feb 18, 2019 12:40 pm
Forum: Illumination Techniques
Topic: New bought a leitz POL condenser
Replies: 8
Views: 6080

Re: New bought a leitz POL condenser

question 1,how can i combine Polarized light, phase contrast, darkfeild like his???
https://www.youtube.com/watch?v=w-1VvpHcKms
by 92111
Mon Feb 18, 2019 12:38 pm
Forum: Illumination Techniques
Topic: New bought a leitz POL condenser
Replies: 8
Views: 6080

New bought a leitz POL condenser

hi
i come across a leitz pol condenser ,and bought it.
NO analyzer
by 92111
Fri Feb 15, 2019 9:23 am
Forum: Camera systems and imaging
Topic: Inexpensive USB 2.0 camera test with two microscope types
Replies: 51
Views: 30948

Re: Inexpensive USB 2.0 camera test

hi
there is a blue hotspot in 63x
by 92111
Wed Feb 13, 2019 10:25 am
Forum: Microscopes and optics
Topic: question about 0.32x lens
Replies: 15
Views: 8378

Re: question about 0.32x lens

hi everyone .... i want to know more?
1.what is that lens ????
2.d1=80mm right ??? abednego1995
by 92111
Tue Feb 12, 2019 2:20 am
Forum: Microscopes and optics
Topic: question about 0.32x lens
Replies: 15
Views: 8378

question about 0.32x lens

hi
i want to know,why this lens named 0.32x, not 3.2x,not 0.6x,or any number else ?
can it be used as 3.2x or 0.6x by adjust work length and focal length ?
how can i know (or calculate)its focal length,
by 92111
Mon Feb 11, 2019 1:59 am
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

found same problem
http://www.photomacrography.net/forum/v ... highlight=
by 92111
Wed Jan 30, 2019 10:53 am
Forum: Pictures and Videos
Topic: 92111's Picture
Replies: 10
Views: 6696

Re: 92111'ssssssssssssss Picture

exmarine wrote:I may be a bit thick but what are you trying to show in the set of photos you have displayed?
HI
show my found,just for fun.
by 92111
Wed Jan 30, 2019 10:50 am
Forum: Pictures and Videos
Topic: 92111's Picture
Replies: 10
Views: 6696

Re: 92111's Picture

fungi NO
other yes
by 92111
Wed Jan 30, 2019 4:09 am
Forum: Pictures and Videos
Topic: 92111's Picture
Replies: 10
Views: 6696

Re: 92111's Picture

se7en wrote:nice pics, what is this?
HI,se7en
Welcome to visit my picture
They are fungi and algae.
by 92111
Tue Jan 29, 2019 3:51 am
Forum: Microscopes and optics
Topic: Unitron Phase MPH Microscope
Replies: 4
Views: 4446

Re: Unitron Phase MPH Microscope

HI
I can't understand you,
you want the theory of metallographic phase contrast microscope,right?only Unitron?
Found unknown brand one
by 92111
Sun Jan 27, 2019 8:25 am
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

MichaelG. wrote: is it optically identical to the Leitz original ??
Yes.
hi,
should i close the diaphragm of 402a condenser? i closed it before.
now,when i open the diaphragm of 402a condenser,blue is not prominent .but image become not clear.
found blue phase ring,when condenser at stop 2,1000x
by 92111
Sat Jan 26, 2019 1:58 am
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

[quote="MichaelG."][/quote]

HI MichaelG
same LED light source,
blue is prominent on LEITZ DIAVERT,
But i can't see blue on OLYMPUS CH20.
do you know why?
by 92111
Fri Jan 25, 2019 4:11 pm
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

but Hobbyst46's method does't work on my diavert,
if there is no other cheap and good method
i want to change to halogen lamp
by 92111
Fri Jan 25, 2019 3:40 pm
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

Finally，I found the blue is LED emitter.
by 92111
Fri Jan 25, 2019 10:27 am
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

beautiful picture with new LED.400x
by 92111
Fri Jan 25, 2019 10:23 am
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

1.when i up the 402a condenser,the blue guy become more and more little and sharp,
2.without 402a condenser,blue guy still there
by 92111
Fri Jan 25, 2019 10:22 am
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

1.try Fluorescent lamp.blue guy still there,but less than LED.
2.if no one know why,don't waste time on this problem
3.1000x without oil.
by 92111
Fri Jan 25, 2019 10:21 am
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

1.after try ground glass and White tissue paper .it does't work,blue guy still there.
2.I changed a new LED.I found new LED make my picture more beautiful,background more white.old led is yellow.
3.1000x without oil.
by 92111
Thu Jan 24, 2019 1:37 am
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

So what should I do?
No matter how I change the position of the LED, the position of the blue one does not change.
by 92111
Tue Jan 22, 2019 1:55 am
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

i guess i am seeing the reflection of coating of lens
by 92111
Mon Jan 21, 2019 11:33 pm
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

Re: blue in center of FOV

similar problem janvangastel
by 92111
Mon Jan 21, 2019 11:31 pm
Forum: Camera systems and imaging
Topic: blue in center of FOV
Replies: 32
Views: 17821

blue in center of FOV

I have a blue in the center of the FOV. I see it bouth in the eyepieces and camera . It is most prominent on using 40x and 100x objects , not prominent on using 10x and 20x objects or dark feild and phase contrast
by 92111
Fri Jan 18, 2019 12:46 pm
Forum: Identification help
Topic: my new found,pond life.ciliate resting cyst and Stentor
Replies: 4
Views: 3225

Re: my new found,pond life.ciliate resting cyst and Stentor

thanks for identify.very quickly
by 92111
Fri Jan 18, 2019 11:58 am
Forum: Microscopes and optics
Topic: Leitz 1.32 OEL Condenser top
Replies: 11
Views: 6161

Re: Leitz 1.32 OEL Condenser top

your adapter suit me?
by 92111
Fri Jan 18, 2019 11:28 am
Forum: Identification help
Topic: found unknown pond life,need identify
Replies: 6
Views: 6665

Re: found unknown pond life,need identify

yes 40x objective.i don't know magnification .
thanks for identify
by 92111
Fri Jan 18, 2019 11:20 am
Forum: Identification help
Topic: my new found,pond life.ciliate resting cyst and Stentor
Replies: 4
Views: 3225

Re: my new found,pond life.

and this

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