Zinc Selenide (ZnSe)
Plano-Concave Lenses

Plano-concave lo ntsiab muag yog cov lo ntsiab muag tsis zoo uas yog tuab ntawm ntug dua li nyob rau hauv nruab nrab, thaum lub teeb dhau los ntawm lawv, nws diverges thiab lub ntsiab lus tseem ceeb yog virtual.Lawv focal ntev yog qhov tsis zoo, nrog rau lub vojvoog ntawm curvature ntawm qhov chaw nkhaus.Muab lawv qhov tsis zoo ntawm lub cev tsis zoo, cov lo ntsiab muag plano-concave tuaj yeem ua haujlwm kom sib npaug ntawm qhov sib txawv ntawm qhov sib txawv los ntawm lwm lub lo ntsiab muag hauv qhov kho qhov muag.Plano-concave lo ntsiab muag yog qhov muaj txiaj ntsig zoo rau kev sib faib cov kab sib txuas thiab sib txuas cov kab sib txuas, lawv tau siv los nthuav cov kab teeb ci thiab ua kom qhov ntev focal ntev hauv cov tshuab kho qhov muag uas twb muaj lawm.Cov lo ntsiab muag tsis zoo no feem ntau yog siv hauv telescopes, koob yees duab, lasers lossis tsom iav los pab cov tshuab ua kom pom tseeb dua.

Plano-concave lo ntsiab muag ua tau zoo thaum cov khoom thiab cov duab nyob ntawm qhov sib xyaw ua ke, ntau dua 5: 1 lossis tsawg dua 1: 5.Nyob rau hauv cov ntaub ntawv no, nws muaj peev xwm txo tau spherical aberration, coma, thiab distortion.Ib yam li nrog cov lo ntsiab muag plano-convex, kom ua tiav qhov kev ua tau zoo tshaj plaws ntawm qhov nkhaus ntawm qhov chaw yuav tsum fim qhov loj tshaj plaws ntawm qhov deb lossis qhov kev sib txuas tsis kawg kom txo qis qhov sib txawv ntawm qhov sib txawv (tshwj tsis yog thaum siv nrog lub zog siab lasers qhov no yuav tsum tau thim rov qab los tshem tawm qhov ua tau ntawm lub tshuab virtual. tsom).

ZnSe lo ntsiab muag yog qhov tshwj xeeb zoo rau kev siv nrog lub zog CO lossis CO2 lasers.Tsis tas li ntawd, lawv tuaj yeem muab kev sib kis txaus hauv thaj chaw pom kom tso cai rau kev siv lub teeb pom kev zoo, txawm hais tias qhov kev xav rov qab tuaj yeem hais tau ntau dua.Paralight Optics muaj Zinc Selenide (ZnSe) Plano-Concave (PCV) Lenses muaj nrog broadband AR txheej optimized rau 2 µm - 13 μm lossis 4.5 - 7.5 μm lossis 8 - 12 μm spectral ntau tso rau ntawm ob qhov chaw.Cov txheej no zoo heev txo qhov siab ntawm qhov pom ntawm lub substrate, yielding qhov nruab nrab kis tau tus mob ntau tshaj 92% lossis 97% hla tag nrho AR txheej.Xyuas cov Graphs rau koj cov ntaub ntawv siv.

Nta:

Khoom siv:

Zinc Selenide (ZnSe)

Txheej Option:

Uncoated los yog nrog Antireflection Coatings

Focal Lengths:

Muaj los ntawm -25.4mm txog -200mm

Daim ntawv thov:

Qhov zoo tshaj plaws rau MIR Laser Daim Ntawv Thov Vim Tsawg Absorption Coefficient

Common Specifications:

pro-related-ico — Reference Drawing rau

Plano-Concave (PCV) Lens

f: Focal Length
f_b: Rov qab Focal Length
R: Radius ntawm Curvature
t_c: Center Thickness
t_e: 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

Zinc Selenide (ZnSe)
Hom

Plano-Convex (PCV) Lens
Index ntawm Refraction

2,403 @ 10.6 m
Abbe Number (Vd)

Tsis txhais
Thermal Expansion Coefficient (CTE)

7.6 x 10^-6/ ℃ ntawm 273K
Txoj kab uas hla Tolerance

Precision: +0.00/-0.10mm |Siab Precision: +0.00/-0.02mm
Center Thickness kam rau ua

Precision: +/- 0.10 hli |High Precision: +/- 0.02 hli
Focal Length kam rau ua

+/- 0.1%
Surface Quality (Scratch-Dig)

Nqe: 60-40 |High Precision: 40-20
Nto Flatness (Plano Sab)

hl/10
Spherical Surface Power (Convex Sab)

3 hl/4
Surface Irregularity (Peak rau Valley)

hl/4
Qhov chaw

Qhov tseeb:<5 arcmin |High Precision:<30 arcsec
Clear Aperture

80% ntawm txoj kab uas hla
AR Txheej ntau yam

2 μm - 13 μm / 4.5 - 7.5 μm / 8 - 12 μm
Kev xa tawm dhau txheej txheej (@ 0 ° AOI)

Cov ntsiab lus> 92% / 97% / 97%
Reflectance dhau txheej txheej (@ 0 ° AOI)

Ravg<3.5%
Tsim Wavelength

10.6m ;ua
Laser Damage Threshold

5 J / cm2 (100 ns, 1 Hz, @ 10.6 µm)