Russian Optical Flat Testing | ข่าวสารล่าสุดเกี่ยวกับ optical flat

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Russian Optical Flat Testing | ข่าวทั่วไปรายวัน

สำหรับข้อมูลเพิ่มเติมเกี่ยวกับ optical flat หรือข่าวที่เกี่ยวข้องอื่นๆ โปรดไปที่: https://recordsrecordsrecordsrecords.com/ การกระทำ

Russian Optical Flat Testing และรูปภาพที่เกี่ยวข้องoptical flat

Russian Optical Flat Testing

Russian Optical Flat Testing


optical flat และข้อมูลที่เกี่ยวข้อง

ในวิดีโอนี้ เราจะมาดูที่อีเบย์ออฟติคัลแฟลตของรัสเซีย การซื้อออปติคัลแฟลตที่ใช้นั้นค่อนข้างยุ่งยาก ดังนั้นสิ่งเหล่านี้จึงเป็นตัวเลือกที่ดีสำหรับคนที่ต้องการลองใช้เทคนิคนี้ เราแสดงให้คุณเห็นว่าคุณสามารถสร้างขอบด้วยหลอดฟลูออเรสเซนต์ในเวลากลางวัน เราดูพื้นผิวต่างๆ ในร้านและหารือเกี่ยวกับรูปแบบต่างๆ เรายังใช้แสงฮีเลียมโมโนโครมเพื่อแสดงความแตกต่างของคุณภาพของขอบภาพด้วยแหล่งกำเนิดแสงที่เหมาะสม ลิงค์สำหรับอ่านเพิ่มเติม .

>>> สามารถหาข้อมูลที่น่าสนใจอื่นๆ ได้ที่นี่ https://recordsrecordsrecordsrecords.com/
แบ่งปันที่นี่

#Russian #Optical #Flat #Testing.

Optical flat,Russian optics,USSR,Metrology,Translate,Interferometry,Fringes,Pratt Whitney Toolmakers flat,Gage Block,Lapping,Flatness testing.

Russian Optical Flat Testing.

optical flat.

เราหวังว่าคุณจะพบข้อมูลเกี่ยวกับ optical flat ที่นี่
ขอบคุณที่รับชมเนื้อหานี้

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24 comments

Noneof Above 30/08/2021 - 23:41

Hey Tom, Did you ever consider making your own optical flat ?

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Mike Mullenix 30/08/2021 - 23:41

What would happen if you tryed a granite surface plate?

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Adam Hammel 30/08/2021 - 23:41

CCCP on the cert. That's old old.

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Glen King 30/08/2021 - 23:41

With the polished sample under normal florescent light what color of the fringes are actually in contact with it optical flat? The purple, green or yellow?

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John Thomas 30/08/2021 - 23:41

i found this PDF of the TY3-3.2I23-88 Russian spec. With the help of the Google translate magic trick it has some really cool info on it.

https://chelinstrument.ru/docs/stnd/tu%203-3.2123-88%20%5Bchelinstrument.ru%5D.pdf

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penroc3 30/08/2021 - 23:41

what is the model of the He lamp? all i have are tube sources for He light and it is very pink compared to your orange

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Steve the Pirate 30/08/2021 - 23:41

I feel like I came back from China about a year before OCR translators really got good.

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George Dunnett 30/08/2021 - 23:41

Tom, I've just bought myself a Russian Optical flat off ebay. I think it would very interesting to test the sole flatness of my Record 5 1/2 hand plane. Also testing the difference in flatness before and after closing the lever cap is a very useful experiment. Many thanks for sharing your knowledge and experience. I now follow you on Instagram. Best wishes from London!!

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Stuart Schaffner 30/08/2021 - 23:41

I'll admit that I have not made careful drawings, but I am pretty certain that I know what causes those regular interference patterns. The thickness of the optical flat, measured perpendicularly, is some value T+-70 nanometers anywhere over the flat. The perpendicular thickness varies by about 1/8 wavelength. In other words, this is standard 1/8 wave optics.
However, the light you see is a reflection from the shiny reference surface. It goes through the flat (plus any air gap) twice at an angle theta. Theta varies from point to point in your image, just like with any mirror. If G is the air gap, then the effective "thickness" of the plate is (T+G)/cos(theta). It's the cos(theta) term that determines the spacing.
Cool stuff! Thanks for showing us all this.

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ExON Norway 30/08/2021 - 23:41

If you get circles it can be hard to decide wether the part is concave or convex(high or low spot). By pressing with your finger, if the pattern moves towards your finger the part is convex, if it moves away from your finger its concave.
Carbon parts can be tricky, they must be polished to a shine to be able to read. Getting both the shine and the correct shape i.e concave/convex (no you don't always want flat parts) is hard

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Flynn banynn 30/08/2021 - 23:41

Doesnt the frequency mean how quickly the gap changes over the surface? If the two surfaces were absolutely perfect and exactly parallel the frequency would be 0, ie no bands at all.

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sleepib 30/08/2021 - 23:41

colored LEDs might be a good option for a monochromatic light source.

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Fred Genius 30/08/2021 - 23:41

You can also use sodium lamps, they're commonly used to grow 'plants' so should be fairly easy to get hold of, and the wavelength is very close to that of helium. Some LEDs might also give better results than 'daylight' tubes. I'll be getting an optical flat sometime soon so I'll try a few out.

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Craig Tate 30/08/2021 - 23:41

OMG! That Google translater is almost as good as on star trek..lol

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- Rayopt - 30/08/2021 - 23:41

If you like to buy on ebay, just buy a vintage tanning bulb for $25 and aim it a white ceiling. Who needs helium or sodium light ? Also I was waiting to see you put it on something that would show us only 5 fringes.

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The Kaiser 30/08/2021 - 23:41

It is Soviet, not Russian.
Big difference.

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farefouse olly 30/08/2021 - 23:41

The only difference is that you have to use vodka to clean the optical flat otherwise it won't be drunk enough for it to work.

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Stanislav G. 30/08/2021 - 23:41

Soviet precision instruments and especially the optics were considered top notch at the time. One anecdote to attest to this is about Japaneses smugglers buying lots of soviet camera lenses from Vladivostok because of their quality and dirt cheap price.

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Dziban Molniya 30/08/2021 - 23:41

Helium discharge lamps are pretty expensive. Much cheaper to use a laser pointer with a beam spreader or diffuser. A green, blue or purple laser would provide more accurate measurements than the yellow peak of helium emission, by virtue of their shorter wavelengths (typically 532nm, 447nm, and 405nm respectively for green, blue and purple, compared with the 588nm line of helium)

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Bruce Williams 30/08/2021 - 23:41

Will any wavelength of light work? For example, a sodium "D" lamp produces a single wavelength of light; would that work?

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Pavle Pavlovic 30/08/2021 - 23:41

I dont speak Russian but im Serbian , Serbians are Slavs like Russians so , same letters i can read it , its basically on point, but where it says " Working " is actually "Flatness " as he mentioned in video .
But the paper it self is obvious without knowing russian , its Class 2 , or Surplass , bad one , its good i guess but not first class.

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Андрей 30/08/2021 - 23:41

This is about how to use optical flat PI80 (ПИ80) https://www.youtube.com/watch?v=hvIUueLY4YI
Your instance is made more than 30 years ago, and Its characteristics may no longer match the certificate.

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Leandro Denayrouze 30/08/2021 - 23:41

Well, I have Japanese, Swiss, Czechoslovakian, Soviet, Taiwanese and of coarse Chinese, measuring instruments. And I continue to choose the sovietic, even if it is used!!!

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Anchor Bait 30/08/2021 - 23:41

Optical flatness is a fringe science

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