Zinc Selenide
Negative Meniscus Lenses
Thaum siv los diverge lub teeb nyob rau hauv beam expanding daim ntaub ntawv, lub concave nto yuav tsum fim lub beam kom txo tau spherical aberration. Thaum siv ua ke nrog lwm lub lens, lub lens tsis zoo yuav ua rau qhov ntev ntawm qhov focal thiab txo cov lej aperture (NA) ntawm lub cev.
ZnSe lo ntsiab muag yog qhov zoo tagnrho rau CO2 lasers daim ntawv thov vim muaj cov yam ntxwv zoo heev thiab ua haujlwm siab rau thermal shock. Paralight Optics muaj Zinc Selenide (ZnSe) tsis zoo meniscus lo ntsiab muag, cov lo ntsiab muag no txo qis NA ntawm lub tshuab kho qhov muag thiab muaj cov txheej txheem broadband anti-reflection, uas yog optimized rau 8 µm mus rau 12 μm spectral ntau tso rau ntawm ob qhov chaw thiab yields. qhov nruab nrab kis tau tus mob ntau tshaj 97% tshaj tag nrho AR txheej ntau yam.
Nta:
Khoom siv:
Zinc Selenide (ZnSe)
Txheej Option:
Uncoated los yog nrog Antireflection Coatings
Focal Lengths:
Muaj los ntawm -40 txog -1000 hli
Daim ntawv thov:
Yuav kom txo qis NA ntawm ib qho Optical System
Common Specifications:
Reference Drawing rau
Negative Meniscus Lens
f: Focal Length
fb: Rov qab Focal Length
R: Radius ntawm Curvature
tc: Center Thickness
te: Ntug Thickness
H”: Rov Qab Tus Thawj Coj Dav Hlau
Lus Cim: Lub focal ntev yog txiav txim siab los ntawm lub dav hlau sab nraum qab, uas tsis tas yuav kab nrog ntug thickness.
Tsis muaj
Ntau Yam & Tolerances
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Cov khoom siv substrate
Laser Qib Zinc Selenide (ZnSe)
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Hom
Negative Meniscus Lens
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Index ntawm Refraction
2,403 @ 10.6 µm
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Abbe Number (Vd)
Tsis tau txhais
-
Thermal Expansion Coefficient (CTE)
7.1 x 10-6/ ℃ ntawm 273K
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Txoj kab uas hla Tolerance
Precision: +0.00/-0.10mm | Siab Precision: +0.00/-0.02mm
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Center Thickness kam rau ua
Precision: +/- 0.10 hli | High Precision: +/- 0.02 hli
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Focal Length kam rau ua
+/- 1%
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Surface Quality (Scratch-Dig)
Nqe: 60-40 | High Precision: 40-20
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Spherical Surface Power
3 hl/4
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Deg Irregularity (Peak rau Valley)
hl/4
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Qhov chaw
Qhov tseeb:<3 arcmin | High Precision:<30 arcsec
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Clear Aperture
80% ntawm txoj kab uas hla
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AR Txheej ntau yam
8-12 hli
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Reflectance dhau txheej txheej (@ 0 ° AOI)
Ravg<1.5%
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Kev xa tawm dhau txheej txheej (@ 0 ° AOI)
Qhov hnyav> 97%
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Tsim Wavelength
10,6m ib
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Laser Damage Threshold (Pulsed)
5 J/cm2(100 ns, 1 Hz, @ 10.6μm)
Cov duab
♦ Kev sib kis nkhaus ntawm 5 hli tuab, tsis muaj ZnSe substrate: siab kis tau tus mob ntawm 0.16 µm mus rau 16 μm
♦ Kev xa tawm nkhaus ntawm 5 hli tuab AR-coated ZnSe Qhov rai: Tavg> 97% dhau ntawm 8 µm - 12 μm ntau yam
