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  • DCV-Lenses-CaF2-1

Calcium Fluoride (CaF2)
Bi-Concave Lenses

Bi-concave kana Double-concave (DCV) lenses malenzi asina kunaka ayo akakora kumucheto kupfuura ari pakati, kana chiedza chikapfuura nepakati pawo, chinosiyana uye chinotarisisa chiri chaivo. Bi-Concave lenses ane radius yakaenzana ye curvature pamativi ese e optical system, kureba kwadzo hakuna kunaka, pamwe neradii yeku curvature yenzvimbo yakakombama. Negative focal kureba inokonzeresa kuti collimated chiitiko chiedza chisiyane, ivo vanowanzo shandiswa kupatsanura danda rinotenderera. Nekuda kwehunhu hwawo, ma-bi-concave lenzi anowanzo shandiswa kuwedzera mwenje muGarireya-mhando danda rekuwedzera kana kuwedzera inoshanda yakatarisana kureba kweanoshandura lens nekushandisa maviri maviri mumasisitimu aripo senge maratidziro emagetsi masisitimu. Izvo zvinobatsirawo kana zvasvika pakuderedzwa kwekufungidzira. Mune optical masisitimu, zvakajairika kusarudza iwo optics nekungwarira kuitira kuti aberrations akaunzwa neiyo positive- uye negative-focal-urefu lenzi dzinenge kukanzura. Aya malenzi asina kunaka anowanzo kushandiswa mumateresikopu, makamera, lasers kana magirazi kubatsira magnification masisitimu kuti awedzere compact.

Bi-concave lenses (kana maviri-concave lenses) ndiyo yakanakisa sarudzo kana chinhu nemufananidzo zviri paabsolute conjugate ratios (chinhu chinhambwe chakakamurwa nemufananidzo disdance) padyo ne1: 1 ine kushandura matanda ekuisa, sezvazvinoita nebi-convex. lenzi. Iwo anoshandiswa pakudzokorora kufungidzira (chaiyo chinhu uye mufananidzo) maapplication. Kana iyo mhedziso yekukudza inodiwa iri pasi pe0.2 kana kupfuura 5, ma plano-concave lenzi anowanzo kuve akakodzera.

Nekuda kwekutapurirana kwayo kukuru kubva ku0.18 µm kusvika ku8.0 μm, Calcium fluoride inoratidza yakaderera refractive index inosiyana kubva pa1.35 kusvika 1.51 uye inowanzoshandiswa pamaapplications anoda kufambiswa kwepamusoro mu infrared uye ultraviolet spectral ranges, ine refractive index ye1.4064 pa1.428 µm. CaF2 zvakare yakanyatso makemikari inert uye inopa kuomarara kwepamusoro kana ichienzaniswa neyayo barium fluoride, uye magnesium fluoride makunakuna. Yayo yakanyanya kukwirisa laser kukuvara chikumbaridzo inoita kuti ibatsire kushandiswa neexcimer lasers. Paralight Optics inopa Calcium Fluoride (CaF2) Bi-concave lenzi ane antireflection coatings kune iyo 3 kusvika 5 µm wavelength renji. Uku kupfekedza kunoderedza zvakanyanya avhareji yekuratidzira kweiyo substrate isingasviki 2.0%, ichipa avhareji yekutapurirana yakakura kupfuura 96% mukati mese AR coating renji. Tarisai maGrafu anotevera kune mareferensi ako.

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Features:

Material:

Calcium Fluoride (CaF2)

Inowanikwa

Asina kuvharwa kana neAntireflection Coatings

Focal Lengths:

Inowanikwa kubva -15 kusvika -50 mm

Applications:

Inokodzera Kushandiswa muExcimer Laser Zvikumbiro, muSpectroscopy uye Yakatonhorera Thermal Imaging.

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Zvakajairwa Zvinodiwa:

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Reference Drawing ye

Kaviri-Concave (DCV) Lens

f: Kureba kwakatarisana
fb: Back Focal Length
ff: Front Focal Length
R: Radius yeCurvature
tc: Kukora Kwepakati
te: Mupendero Hukobvu
H”: Kudzokera Principal Ndege

Ongorora: Iyo yakatarisa kureba inotarwa kubva kumashure hombe ndege, iyo isingaite mutsara nekukora kwemupendero.

Parameters

Ranges & Tolerances

  • Substrate Material

    Calcium Fluoride (CaF2)

  • Type

    Kaviri-Concave (DCV) Lens

  • Index yeRefraction

    1.428 @ Nd:Yag 1.064 μm

  • Abbe Number (Vd)

    95.31

  • Thermal Expansion Coefficient (CTE)

    18.85 x 10-6/℃

  • Diameter Tolerance

    Precison: +0.00/-0.10mm | High Precison: +0.00/-0.03 mm

  • Makobvu Tolerance

    Precison: +/-0.10 mm | High Precison: +/-0.03 mm

  • Focal Length Tolerance

    +/-2%

  • Hunhu hwepamusoro (scratch-dig)

    Precison: 80-50 | High Precison: 60-40

  • Spherical Surface Power

    3 λ/2

  • Surface Irregularity (Peak to Valley)

    λ/2

  • Center

    Precison:<3 arcmin | High Precison: <1 arcmin

  • Clear Aperture

    90% yeDyamita

  • AR Coating Range

    3 - 5 μm

  • Kufambisa pamusoro peCoating Range (@ 0° AOI)

    Tavg > 95%

  • Reflectance over Coating Range (@ 0° AOI)

    Ravg<2.0%

  • Dhizaini Wavelength

    588 nm

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Magirafu

♦ Kuendesa curve yeCaF2 substrate isina kuvharwa: kutakura kwepamusoro kubva ku0.18 kusvika ku8.0 μm
♦ Transmission curve yeAR-yakavharwa CaF2 Lens: Tavg> 95% pamusoro pe3 - 5 μm renji
♦ Transmission curve yeAr-coated CaF2 Lens yakagadziridzwa: Tavg > 95% pamusoro pe2 - 5 μm renji

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Transmission Curve yeAR-yakavharwa (3 µm - 5 μm) CaF2 Lenzi

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Transmission Curve yeEnhanced AR-yakavharwa (2 µm - 5 μm) CaF2 Lenzi

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