Calcium Fluoride (CaF2)
Bi-Convex Lenses
Bi-convex lo ntsiab muag (los yog ob-convex lo ntsiab muag) ua tau zoo dua thaum cov khoom nyob ze rau ntawm lub lens thiab qhov sib piv ntawm cov conjugate tsawg. Thaum cov khoom thiab cov duab nyob deb yog sib npaug (1: 1 magnification), tsis tsuas yog spherical aberration minimized, tab sis kuj distortion, thiab chromatic aberration raug tso tseg vim symmetry. Yog li lawv yog cov kev xaiv zoo tshaj plaws thaum cov khoom thiab cov duab nyob ntawm qhov sib piv ntawm qhov sib npaug ze rau 1: 1 nrog cov kab lus sib txawv. Raws li txoj cai ntawm tus ntiv tes xoo, ob-convex lo ntsiab muag ua tau zoo nyob rau hauv qhov tsawg kawg nkaus aberration ntawm conjugate ratios ntawm 5: 1 thiab 1: 5, lawv yog siv rau relay imaging (Real Object and Image). Sab nraum qhov no, cov lo ntsiab muag plano-convex feem ntau yog tsim nyog.
Vim nws cov kis tau tus mob siab ntawm 0.18 µm mus rau 8.0 μm, CaF2 nthuav tawm qhov ntsuas qis qis sib txawv ntawm 1.35 txog 1.51 thiab feem ntau yog siv rau cov ntawv thov uas xav tau kev sib kis tau zoo hauv infrared thiab ultraviolet spectral ranges. Calcium fluoride kuj tseem muaj tshuaj lom neeg tsis zoo thiab muaj cov tawv tawv zoo dua piv rau nws cov barium fluoride, thiab magnesium fluoride cov kwv tij. Paralight Optics muaj Calcium Fluoride (CaF2) Bi-Convex Lenses muaj nrog broadband AR txheej optimized rau 2 µm txog 5 μm spectral ntau yam tso rau ntawm ob qhov chaw. Cov txheej no zoo heev txo qhov nruab nrab qhov kev xav ntawm lub substrate tsawg dua 1.25%, yielding qhov nruab nrab kis tau tus mob ntau tshaj 95% ntawm tag nrho AR txheej. Tshawb xyuas cov duab hauv qab no rau koj cov ntaub ntawv siv.
Nta:
Khoom siv:
Calcium Fluoride (CaF2)
Muaj:
Uncoated los yog nrog Antireflection Coatings
Focal Lengths:
Muaj los ntawm 15 mus rau 200 mm
Daim ntawv thov:
Zoo tagnrho rau siv nrog Excimer Lasers
Common Specifications:
Reference Drawing rau
Ob chav convex (DCX) Lens
Dia: Dia
f: Focal Length
ff: Pem hauv ntej 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
Calcium Fluoride (CaF2)
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Hom
Ob chav-Convex (DCX) Lens
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Index ntawm Refraction (nd)
1.434 @ Nd:Yag 1.064 μm
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Abbe Number (Vd)
95.31 ib
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Thermal Expansion Coefficient (CTE)
18.85 x 10-6/ ℃
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Txoj kab uas hla Tolerance
Precision: +0.00/-0.10mm | High Precision: +0.00/-0.03 hli
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Thickness kam rau ua
Precision: +/- 0.10 hli | Siab Precise: +/- 0.03 hli
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Focal Length kam rau ua
+/- 0.1%
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Surface Quality (scratch-dig)
Nqe: 80-50 | Siab Precise: 60-40
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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 | Siab Precison: <1 arcmin
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Clear Aperture
90% ntawm txoj kab uas hla
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AR Txheej ntau yam
2-5 μm
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Reflectance dhau txheej txheej (@ 0 ° AOI)
Ravg<1.25%
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Kev xa tawm dhau txheej txheej (@ 0 ° AOI)
Tus nqi> 95%
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Tsim Wavelength
588nm ua
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Laser Damage Threshold
> 5 J/cm2(100 ns, 1 Hz, @ 10.6μm)
Cov duab
♦ Kev sib kis nkhaus ntawm 10 hli tuab, tsis muaj CaF2 substrate: siab kis tau tus mob ntawm 0.18 µm mus rau 8 μm
♦ Kev sib kis nkhaus ntawm kev txhim kho AR-coated CaF2: Tavg> 95% dhau ntawm 2 µm - 5 μm ntau yam
