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  • DCV-Lenses-ZnSe-1

Zinc Selenide (ZnSe)
Bi-Concave Lenses

Bi-concave los yog Ob-concave (DCV) lo ntsiab muag muaj qhov ntev focal ntev. Cov lo ntsiab muag sib txawv no tuaj yeem siv los ua kom sib txawv ntawm cov kab sib txuas mus rau qhov kev tsom xam virtual thiab feem ntau yog siv hauv Galilean-hom nqaj expander. Lawv kuj feem ntau siv los diverge lossis nce qhov sib txawv ntawm cov kab sib txuas. Hauv cov tshuab kho qhov muag, nws yog ib qho uas cov kws tshawb fawb xaiv lawv cov optics ua tib zoo kom cov aberrations qhia los ntawm qhov zoo- thiab qhov tsis zoo-focal-ntev lo ntsiab muag kwv yees li tshem tawm. Lwm tus siv cov lo ntsiab muag no ua khub txhawm rau ua kom muaj txiaj ntsig zoo ntawm lub lens converging ib yam li lub lens tsis zoo meniscus.

Thaum txiav txim siab ntawm ib lub lens-concave thiab ib lub lens bi-concave, ob qho tib si uas ua rau lub teeb pom kev sib txawv, feem ntau nws tsim nyog xaiv lub lens bi-concave yog tias qhov sib piv tsis sib xws (qhov deb ntawm cov khoom faib los ntawm cov duab nyob deb) yog ze rau 1. Thaum qhov xav tau qhov kev nthuav dav yog tsawg dua 0.2 lossis ntau dua 5, qhov nyiam yog xaiv lub lens-concave hloov.

ZnSe lo ntsiab muag yog qhov tshwj xeeb zoo rau kev siv nrog lub zog siab CO2 lasers. Paralight Optics muaj Zinc Selenide (ZnSe) Bi-Concave lossis Ob Chav-Concave (DCV) Lenses muaj nrog broadband AR txheej optimized rau 8 - 12 μm spectral ntau yam tso rau ntawm ob qhov chaw. Cov txheej no zoo heev txo qhov siab ntawm qhov pom ntawm lub substrate, ua rau qhov nruab nrab kis tau tus mob ntau dua 97% hla tag nrho AR txheej. Yog xav paub ntxiv txog cov coatings, thov xyuas cov duab hauv qab no rau koj cov ntaub ntawv siv.

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Nta:

Khoom siv:

Zinc Selenide (ZnSe)

Txheej Options:

Muaj Uncoated lossis nrog Antireflection Coatings

Focal Lengths:

Muaj los ntawm -25.4mm txog -200mm

Daim ntawv thov:

Zoo tagnrho rau CO2 Kev siv Laser Vim Tsawg Absorption Coefficient

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Common Specifications:

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Reference Drawing rau

Ob chav-Concave (DCV) Lens

f: Focal Length
fb: Rov qab Focal Length
ff: Pem hauv ntej 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

  • Cov khoom siv substrate

    Laser Qib Zinc Selenide (ZnSe)

  • Hom

    Ob-Convave (DCV) Lens

  • Index ntawm Refraction

    2,403 @ 10.6 m

  • Abbe Number (Vd)

    Tsis tau txhais

  • Thermal Expansion Coefficient (CTE)

    7.1 x 10-6/ ℃ ntawm 273K

  • Txoj kab uas hla Tolerance

    Presicion: +0.00/-0.10mm | Siab Precise: +0.00/-0.02mm

  • Thickness kam rau ua

    Presicion: +/- 0.10 hli | Siab Precise: +/- 0.02 hli

  • Focal Length kam rau ua

    +/- 1%

  • Surface Quality (scratch-dig)

    Nqe: 60-40 | Siab Precise: 40-20

  • Spherical Surface Power

    3 hl/4

  • Deg Irregularity (Peak rau Valley)

    L/4 @633 nm

  • Qhov chaw

    Qhov tseeb:<3 arcmin | Siab Precision<30 arcsec

  • Clear Aperture

    80% ntawm txoj kab uas hla

  • AR Txheej ntau yam

    8-12 hli

  • Reflectance dhau txheej txheej (@ 0 ° AOI)

    Ravg<1.0%, Rab<2.0%

  • Kev xa tawm dhau txheej txheej (@ 0 ° AOI)

    Tavg> 97%, Tabs> 92%

  • Tsim Wavelength

    10,6m ib

  • Laser Damage Threshold

    5 J/cm2(100 ns, 1 Hz, @ 10.6μm)

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Cov duab

♦ kis tau tus mob ntawm 5 hli tuab, uncoated ZnSe substrate: siab kis tau tus mob ntawm 0.16 mus rau 16 μm
♦ Kev xa tawm nkhaus ntawm 5 hli AR-coated ZnSe substrate: Tavg> 97% dhau ntawm 8 - 12 μm ntau yam

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Transmission Curve ntawm 5 hli Thick AR-coated (8 µm - 12 μm) ZnSe Substrate ntawm 0 ° AOI

Yam khoom

Ntaus nkag mus tshawb lossis ESC kom kaw