Awọn lẹnsi Plano-concave ṣe daradara nigbati ohun ati aworan ba wa ni awọn ipin conjugate pipe, tobi ju 5:1 tabi kere si 1:5. Ni idi eyi, o ṣee ṣe lati dinku aberration ti iyipo, coma, ati ipalọlọ. Bakanna pẹlu awọn lẹnsi plano-convex, lati ṣaṣeyọri ṣiṣe ti o pọju, dada te yẹ ki o dojukọ ijinna ohun ti o tobi julọ tabi isunmọ ailopin lati dinku aberration ti iyipo (ayafi nigba lilo pẹlu awọn laser agbara giga nibiti eyi yẹ ki o yipada lati yọkuro iṣeeṣe foju kan idojukọ).
Nitori gbigbe giga rẹ lati 0.18 µm si 8.0 μm, CaF2 ṣe afihan atọka itọka kekere ti o yatọ lati 1.35 si 1.51 ati pe a lo nigbagbogbo fun awọn ohun elo ti o nilo gbigbe giga ni infurarẹẹdi ati awọn sakani spectral ultraviolet, o ni itọka itọka ti 1.4064 ni 1.4064 . Fluoride kalisiomu tun jẹ aiṣedeede kemikali ati pe o funni ni lile ti o ga julọ ni akawe si barium fluoride rẹ, ati awọn ibatan fluoride magnẹsia. Paralight Optics nfunni Calcium Fluoride (CaF2) awọn lẹnsi concave plano-concave pẹlu awọn aṣọ atako atako fun 2 µm si 5 µm iwọn igbi ti a fi pamọ sori awọn aaye mejeeji. Yi bo gidigidi din awọn dada reflectivity ti awọn sobusitireti, Egbin ohun apapọ gbigbe ni excess ti 97% lori gbogbo AR ti a bo ibiti o. Ṣayẹwo awọn aworan atẹle fun awọn itọkasi rẹ.
Calcium Fluoride (CaF2)
Uncoated tabi pẹlu Antireflection Coatings
Wa lati -18 to -50 mm
Dara fun Lilo ni Awọn ohun elo Laser Excimer, ni Spectroscopy ati Aworan Gbona Tutu
Ohun elo sobusitireti
Calcium Fluoride (CaF2)
Iru
Plano-Concave (PCV) lẹnsi
Atọka ti Refraction (nd)
1.428 @ Nd: Yag 1.064 μm
Nọmba Abbe (Vd)
95.31
Olùsọdipúpọ̀ Ìmúgbòòrò gbóná (CTE)
18.85 x 10-6/℃
Ifarada Opin
Itọkasi: + 0.00 / - 0.10mm | Ga konge: +0.00/-0.03 mm
Ifarada Sisanra aarin
Konge: +/- 0.10 mm | Ga konge: +/-0.03 mm
Ifarada Ipari Idojukọ
+/- 2%
Didara Dada (Scratch-Dig)
konge: 80-50 | Ga konge: 60-40
Ilẹ̀ Ilẹ̀ (Ẹgbẹ́ Plano)
λ/4
Agbara Dada Yiyi (Ipa Convex)
3 λ/2
Aiṣedeede Dada (Ti o ga si afonifoji)
λ/2
Ile-iṣẹ
Itọkasi:<3 arcmin | Itọkasi giga:<1 arcmin
Ko Iho
90% ti Opin
AR aso Ibiti
2-5 μm
Gbigbe lori Ibiti Ibo (@ 0° AOI)
Tavg> 97%
Iṣaro lori Ibiti Ibo (@ 0° AOI)
Ravg<1.25%
Design wefulenti
588 nm