Cum decernatur inter lens plano-concavatum et lens bi-concavata, utraque ex qua causa lumen incidenti divergentium, aptius est lensum pi- concavum eligere, si ratio absoluta conjugata (distantia objecti per distantiam imaginalem divisa) prope 1. Cum magnificatio absoluta desiderata est vel minor quam 0.2 vel maior quam 5, proclivitas ad lens concavata potius eligendum est.
ZnSe lentium aptissima sunt maxime ad usum lasers cum summus potentia CO2 . Optica paralight offert Zinc Selenide (ZnSe) Bi-Concave vel Duplici-Concave (DCV) Lentes paratae cum latitudine AR efficiens optimized pro 8-12 µm extensionis spectris in utraque superficie deposita. Haec efficiens multum remittit altam superficiei reflexionem subiecti, praebens transmissionem mediocris in excessu 97% per totam range AR efficiens. Pro magis informationes in artibus, quaeso sequentia Graphs pro indiciis tuis inspicias.
Cadmiae Selenide (ZnSe)
Available Uncoated an antireflection coatings
Available ex -25.4mm ad -200 mm
Specimen pro CO2 Laser Applications Ob Low Coefficiens effusio
Substratum Material
Laser-Grade Zinc Selenide (ZnSe)
Type
Geminus-Convave (DCV) Lens
Index Refractionis
2.403 @ 10.6μm
Abbatis Number (Vd)
Non definitur
Scelerisque Expansion Coefficient (CTE)
7.1x10-6/ at 273K
Diameter Tolerantia
Praesicion: +0.00/-0.10mm | High Preison: +0.00/-0.02mm
Crassitudo tolerantia
Praesicion: +/-0.10 mm | High Preison: +/-0.02 mm
Arx Longitudo Tolerantia
+/- 1%
Superficiem Quality
Praesicion: 60-40 | Alta Preison: 40-20
Sphaerica Superficies
3 λ/4
Superficies Irregularitas (Peak ad Valley)
λ/4 @633 nm
Centration
Precision:< 3 arcmin | Princeps Precision<30 arcsec
Patet Apertura
LXXX% diametri
AR Coating Range
8 - 12 μm
Meditatio super Coating Range (@ 0° AOI)
Ravg<1.0%, Rabs< 2.0%
Transmissio super Coating Range (@ 0° AOI)
Tavg > 97%, Tabs > 92%
Design Wavelength
10.6 μm
Laser damnum Limen
5 J/cm2(100 ns, 1 Hz, 10.6μm)