Optical flat

WHICH ACCURACY SHOULD BE USED - λ/4, λ/10, λ/20

This is a commonly asked question and the answer is dependent on what is being tested. If the surface that is being tested is flatter than λ/4, then a more precise flat will be required to show a change in the interference pattern. In this case, a λ/4 flat would exhibit straight parallel lines, but λ/10 or λ/20 flats would show enough curvature in the fringes to measure the surface accurately.
WHAT MATERIALS SHOULD BE USED – FUSED SILICA OR ZERODUR®?
Fused Silica: We use a clear optical fused silica, which has a very low thermal expansion of 0.55 x 10-6 per °C. Being highly durable and having good resistance to abrasion makes fused silica a good choice for applications that are high in wear and tear. Full mechanical, thermal, electrical, and chemical specifications are available.

ZERODUR®: Yellow tinted ZERODUR® is a clear glass ceramic developed by Schott Research Labs. ZERODUR® exhibits an extremely low thermal expansion of ±0.10 x 10 -6 per °C. In applications where temperature fluctuation is a concern, ZERODUR® offers a thermal stability that is unmatched. Full mechanical, thermal, electrical, and chemical specifications are available.In-House Interferometric Testing

Each optical flat and plano precision mirror is tested for flatness error using our Zygo GPI-XP Interferometer. With the aid of the interferometer and other precision testing equipment, Edmund Optics is able to provide and ensure the highest quality optics.

RECALIBRATION

Our Optical Lab can recertify our flats up to 4» (101.6mm) in diameter for a fee. We can only recertify flats that were purchased from us. For full details on our optical flat recertification, please contact our Sales Department.
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Optik yassi kerakli sirtdagi tekislikni ko'rsatish uchun interferentsiya xususiyatidan foydalanadi. Sinov plitasi sifatida ham ma'lum bo'lgan optik tekislik va ish yuzasi kontaktga qo'yilganda, havo takozi hosil bo'ladi. Yassi va ish yuzasi orasidagi aloqada bo'lmagan joylar bu havo xanjarini hosil qiladi. Havo xanjarining qalinligining o'zgarishi interferentsiya zonalarining shakli va yo'nalishini belgilaydi. Interferentsiya chiziqlari tomonidan ko'rsatilgan egrilik miqdori sirt tekisligini aniqlash uchun ishlatilishi mumkin. Agar havo xanjari juda katta bo'lsa, unda bir-biriga yaqin joylashgan ko'plab chiziqlar paydo bo'lishi mumkin, bu hosil bo'lgan naqshni tahlil qilishni qiyinlashtiradi. Optik kvartiraning yuqori qismiga oddiygina bosim o'tkazish muammoni engillashtiradi.

Sirtning har qanday alohida hududining tekisligini aniqlash ikkita parallel xayoliy chiziq qilish orqali amalga oshiriladi; biri har qanday chekkaning uchlari orasida, ikkinchisi esa o'sha chetning tepasida. Chiziqlar orasida joylashgan chekkalar soni tekislikni aniqlash uchun ishlatilishi mumkin. Monoxromatik yorug'lik ko'rish uchun keskin kontrast yaratish va tekislikni bitta to'lqin uzunligi funktsiyasi sifatida belgilash uchun ishlatiladi.
QAYSI ANIQLIK FOYDALANISH KERAK – l/4, l/10, l/20
Bu tez-tez so'raladigan savol va javob sinovdan o'tgan narsaga bog'liq. Agar tekshirilayotgan sirt l/4 dan tekisroq bo'lsa, interferentsiya naqshidagi o'zgarishlarni ko'rsatish uchun aniqroq tekislik talab qilinadi. Bunday holda, l/4 yassi to'g'ri parallel chiziqlarni ko'rsatadi, lekin l/10 yoki l/20 tekisliklar sirtni aniq o'lchash uchun chekkalarda etarlicha egrilikni ko'rsatadi.
QANDAY MATERIALLARDAN FOYDALANISH KERAK – FUSED SILICA YOKI ZERODUR®?
Eritilgan silika: Biz 0,55 x 10-6 °C uchun juda past termal kengayishga ega bo'lgan aniq optik eritilgan kremniydan foydalanamiz. Yuqori chidamliligi va aşınmaya yaxshi qarshilik ko'rsatishi eritilgan kremniy oksidi yuqori aşınma va yıpranma bo'lgan ilovalar uchun yaxshi tanlov qiladi. To'liq mexanik, termal, elektr va kimyoviy spetsifikatsiyalar mavjud.ZERODUR®: Sariq rangli ZERODUR® - bu Schott Research Labs tomonidan ishlab chiqilgan shaffof shisha keramika. ZERODUR® har °C uchun ±0,10 x 10 -6 juda past termal kengayishini namoyish etadi. Haroratning o'zgarishi tashvishlanayotgan ilovalarda ZERODUR® tengsiz issiqlik barqarorligini taklif qiladi. To'liq mexanik, issiqlik, elektr va kimyoviy spetsifikatsiyalar mavjud.Uy ichidagi interferometrik sinov
Har bir optik tekis va tekis aniqlikdagi oyna Zygo GPI-XP Interferometrimiz yordamida tekislik xatosi uchun sinovdan o'tkaziladi. Interferometr va boshqa aniq sinov uskunalari yordamida Edmund Optics eng yuqori sifatli optikani ta'minlay oladi va ta'minlaydi.

QAYTA KALİBRASYA

Bizning optik laboratoriyamiz diametri 4» (101,6 mm) gacha bo'lgan kvartiralarimizni haq evaziga qayta sertifikatlashi mumkin. Biz faqat bizdan sotib olingan kvartiralarni qayta sertifikatlashimiz mumkin. Bizning optik yassi qayta sertifikatlash haqida to'liq ma'lumot olish uchun, iltimos, bizning savdo bo'limimizga murojaat qiling.

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OPTICAL FLATS

Full Range Optical Flat Solutions
Optical Flats available in a wide variety of accuracies (λ/4, λ/10, and λ/20). Advanced Optics is a leading manufacturer of optical flats and has been crafting high-quality, affordable optical flats for more than 50 years.
In addition to a large selection of in-stock optical flats, Advanced Optics offers custom optical flats, as well as free engineering services. Our capabilities allow us to provide custom shapes, apply bevels and even drill holes.
Whether you require one of our many catalog flats or need a custom optical flat, let Advanced Optics be your trusted partner – You can depend on our 100% outgoing inspection, on-time delivery, and unmatched customer service, all at competitive prices.

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  Single and Double Sided Optical Flat Specifications
  
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  In stock optical flats precision polished up to 6 inches in diameter
  
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  Ability to polish up to 21 inches in diameter
  
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  Accuracy of λ/4, λ/10 or λ/20 available, many in stock for immediate shipment
  
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  Every optical flat comes with a Certificate of Calibration traceable to the NIST
  
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  Extensive stock of raw materials available in-house for fast turnaround
  

In stock optical flats uncoated with the option of adding an a contrast-enhancing TiO2

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  Custom fabrication available including custom sizes, shapes, and coatings with the ability to drill holes and provide custom bevels
  
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  Optical flat resurfacing with a fast turnaround
  
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  Each optical flat may be ordered with its own finely crafted storage case.Optical Materials Available
  

Double Surface Optical Flat/Optical Windows
Advanced Optics offers in stock fused silica double sided optical flats that may also be used as optical windows. Fused silica offers superior transmission characteristics, a high degree of purity, exceptional environmental durability, and a low coefficient of thermal expansion.

Dual Surface Optical Flats/Optical Windows are an excellent choice when an optical system requires separation between two environments while passing a specific wavelength(s) of light or for demanding interferometry requirements.

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OPTIK Kvartiralar

To'liq diapazonli optik tekis echimlar
Optik kvartiralar turli xil aniqliklarda mavjud (l/4, l/10 va l/20). Advanced Optics optik kvartiralarning etakchi ishlab chiqaruvchisi bo'lib, 50 yildan ortiq vaqt davomida yuqori sifatli, hamyonbop optik kvartiralarni ishlab chiqaradi.
Stokdagi optik kvartiralarning katta tanloviga qo'shimcha ravishda, Advanced Optics maxsus optik kvartiralarni, shuningdek, bepul muhandislik xizmatlarini taklif qiladi. Bizning imkoniyatlarimiz bizga maxsus shakllarni taqdim etish, burchaklarni qo'llash va hatto teshiklarni burg'ulash imkonini beradi.
Sizga bizning ko'plab kataloglarimizdan biri kerakmi yoki maxsus optik kvartira kerakmi, Advanced Optics sizning ishonchli hamkoringiz bo'lsin – Siz bizning 100% chiquvchi tekshiruvimiz, o'z vaqtida yetkazib berishimiz va raqobatbardosh narxlarda tengsiz mijozlarga xizmat ko'rsatishimizga ishonishingiz mumkin.
• Bir va ikki tomonlama optik yassi spetsifikatsiyalar
• 6 dyuymgacha diametrli sayqallangan optik kvartiralarda
• Diametri 21 dyuymgacha bo'lgan parlatish qobiliyati
• l/4, l/10 yoki l/20 aniqligi mavjud, ko‘plari darhol jo‘natish uchun zaxirada
• Har bir optik kvartira NIST tomonidan kuzatilishi mumkin bo'lgan kalibrlash sertifikati bilan birga keladi
• Tez qayta ishlash uchun uyda mavjud bo'lgan keng xom ashyo zaxirasi
Kontrastni kuchaytiruvchi TiO2 qo'shilishi mumkin bo'lgan qoplamasiz optik kvartiralar mavjud
• Maxsus o'lchamlar, shakllar va qoplamalarni o'z ichiga olgan maxsus ishlab chiqarish mavjud bo'lib, teshiklarni burg'ulash va moslashtirilgan burchaklarni ta'minlash qobiliyatiga ega.
• Tez burilish bilan optik tekis qoplama
• Har bir optik kvartiraga o'zining nozik ishlangan saqlash qutisi bilan buyurtma berish mumkin. Mavjud optik materiallar
Ikki yuzli optik tekis/optik oynalar
Advanced Optics kompaniyasi optik oynalar sifatida ham ishlatilishi mumkin bo'lgan ikki tomonlama optik plastinalarni taklif qiladi. Eritilgan silika yuqori o'tkazuvchanlik xususiyatlarini, yuqori darajadagi tozaligini, ajoyib ekologik chidamliligini va past issiqlik kengayish koeffitsientini taklif etadi.

Ikki sirtli optik tekislar/optik oynalar optik tizim yorug'likning ma'lum bir to'lqin uzunligi (lar)ini o'tkazishda ikki muhitni ajratishni talab qilganda yoki interferometriya talablarini talab qilganda ajoyib tanlovdir.

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View our in-stock single and double sided fused silica optical flats below:

Surface Accuracy: Single or Double Sided Flat Diameter Fused Silica (Thickness)

λ/20 (0.000001») 25.4 (1») 12.7 (1/2»)

λ/10 (0.000002») 25.4 (1») 12.7 (1/2»)
λ/20 (0.000001») 50.8 (2») 15.9 (5/8»)
λ/10 (0.000002») 50.8 (2») 15.9 (5/8»)
λ/20 (0.000001») 76.2 (3») 15.9 (5/8»)
λ/10 (0.000002») 76.2 (3») 15.9 (5/8»)
λ/20 (0.000001») 101.6 (4») 19.1 (3/4»)
λ/10 (0.000002») 101.6 (4») 19.1 (3/4»)
λ/20 (0.000001») 127 (5») 19.1 (3/4»)
λ/10 (0.000002») 127 (5») 19.1 (3/4»)
λ/20 (0.000001») 152.4 (6») 25.4 (1»)
λ/10 (0.000002») 152.4 (6») 25.4 (1»)
λ/20 (0.000001») 203.2 (8») 33.8 (1.33»)
λ/10 (0.000002») 203.2 (8») 33.8 (1.33»)