Nigbati o ba pinnu laarin awọn lẹnsi plano-concave ati lẹnsi bi-concave, mejeeji eyiti o fa ina isẹlẹ naa lati yapa, o jẹ deede diẹ sii lati yan lẹnsi bi-concave ti ipin conjugate pipe (ijinna ohun ti o pin nipasẹ ijinna aworan) jẹ sunmo si 1. Nigba ti o fẹ idi magnification jẹ boya kere ju 0,2 tabi tobi ju 5, awọn ifarahan ni lati yan a plano-concave lẹnsi dipo.
Awọn lẹnsi ZnSe jẹ pataki ni ibamu daradara fun lilo pẹlu awọn lasers CO2 agbara-giga. Paralight Optics nfunni Zinc Selenide (ZnSe) Bi-Concave tabi Double-Concave (DCV) Awọn lẹnsi ti o wa pẹlu gbohungbohun AR ti o dara julọ fun iwọn iwoye 8 – 12 μm ti a fi silẹ lori awọn aaye mejeeji. Yi bo gidigidi din awọn ga dada reflectivity ti awọn sobusitireti, ti nso ohun apapọ gbigbe ni excess ti 97% kọja gbogbo AR ti a bo ibiti o. Fun alaye diẹ sii lori awọn aṣọ, jọwọ ṣayẹwo awọn aworan atẹle fun awọn itọkasi rẹ.
Zinc Selenide (ZnSe)
Wa Ti a ko bo tabi pẹlu Awọn ideri Antireflection
Wa lati -25.4mm to -200 mm
Apẹrẹ fun CO2 Awọn ohun elo lesa Nitori Low Absorption olùsọdipúpọ
Ohun elo sobusitireti
Lesa-ite Zinc Selenide (ZnSe)
Iru
Lẹnsi meji-Convave (DCV).
Atọka ti Refraction
2.403 @ 10.6μm
Nọmba Abbe (Vd)
Ko ṣe alaye
Olùsọdipúpọ̀ Ìmúgbòòrò gbóná (CTE)
7.1x10-6/℃ ni 273K
Ifarada Opin
Ipese: + 0.00 / - 0.10mm | Ga konge: +0.00/-0.02mm
Ifarada Sisanra
Presection: +/- 0.10 mm | Ga konge: +/-0.02 mm
Ifarada Ipari Idojukọ
+/- 1%
Didara oju (scratch-dig)
Presection: 60-40 | Ga konge: 40-20
Ti iyipo dada Power
3 λ/4
Aiṣedeede Dada (Ti o ga si afonifoji)
λ/4 @ 633 nm
Ile-iṣẹ
Itọkasi:< 3 arcmin | Ga konge< 30 aaki
Ko Iho
80% ti Opin
AR aso Ibiti
8-12 μm
Iṣaro lori Ibiti Ibo (@ 0° AOI)
Ravg<1.0%, Rabs<2.0%
Gbigbe lori Ibiti Ibo (@ 0° AOI)
Tavg> 97%, Awọn taabu> 92%
Design wefulenti
10.6 μm
Alabajẹ Lesa
5 J/cm2(100 ns, 1 Hz, @10.6μm)