Awọn lẹnsi bi-convex (tabi awọn lẹnsi convex-meji) ṣe dara julọ nigbati ohun naa ba sunmọ lẹnsi ati pe ipin conjugate jẹ kekere. Nigbati ohun naa ati ijinna aworan ba dọgba (1: 1 magnification), kii ṣe aberration ti iyipo nikan ni idinku, ṣugbọn ipalọlọ paapaa, ati aberration chromatic ti paarẹ nitori imudara. Nitorinaa wọn jẹ awọn yiyan ti o dara julọ nigbati ohun ati aworan ba wa ni awọn ipin conjugate pipe ti o sunmọ 1:1 pẹlu awọn ina igbewọle iyatọ. Gẹgẹbi ofin atanpako, awọn lẹnsi bi-convex ṣe daradara laarin aberration ti o kere ju ni awọn ipin conjugate laarin 5: 1 ati 1: 5, wọn lo fun awọn ohun elo aworan yii (Ohun gidi ati Aworan). Ni ita ibiti o wa, awọn lẹnsi plano-convex nigbagbogbo dara julọ.
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 iwoye ultraviolet. 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 ni Calcium Fluoride (CaF2) Awọn lẹnsi Bi-Convex ti o wa pẹlu gbohungbohun AR ti a ṣe iṣapeye fun iwọn iwoye 2 µm si 5 μm ti o fipamọ sori awọn aaye mejeeji. Ibora yii dinku iwọn ifarabalẹ apapọ ti sobusitireti kere ju 1.25%, ti nso gbigbe ni apapọ ju 95% lori gbogbo sakani AR ti a bo. Ṣayẹwo awọn aworan atẹle fun awọn itọkasi rẹ.
Calcium fluoride (CaF2)
Uncoated tabi pẹlu Antireflection Coatings
Wa lati 15 to 200 mm
Apẹrẹ fun Lilo pẹlu Excimer lesa
Ohun elo sobusitireti
Calcium fluoride (CaF2)
Iru
Double-Convex (DCX) lẹnsi
Atọka ti Refraction (nd)
1.434 @ 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
Konge: +/- 0.10 mm | Ga konge: +/-0.03 mm
Ifarada Ipari Idojukọ
+/- 0.1%
Didara oju (scratch-dig)
konge: 80-50 | Ga konge: 60-40
Ti iyipo dada Power
3 λ/4
Aiṣedeede Dada (Ti o ga si afonifoji)
λ/4
Ile-iṣẹ
Itọkasi:<3 arcmin | Precison giga: <1 arcmin
Ko Iho
90% ti Opin
AR aso Ibiti
2-5 μm
Iṣaro lori Ibiti Ibo (@ 0° AOI)
Ravg<1.25%
Gbigbe lori Ibiti Ibo (@ 0° AOI)
Tavg> 95%
Design wefulenti
588 nm
Alabajẹ Lesa
> 5 J/cm2(100 ns, 1 Hz, @10.6μm)