• PCV-Lenzi-CaF2-1

Calcium Fluoride (CaF2)
Plano-Concave Lenses

Plano-concave lenses malenzi asina kunaka ayo akakora kumucheto kupfuura ari pakati, kana chiedza chikapfuura nepakati pawo, chinosiyana uye poindi yekutarisisa ndeyechokwadi. Kureba kwavo kwakatarisa kwakashata, pamwe chete neradius ye curvature yenzvimbo dzakakombama. Tichifunga nezve spherical spherical aberration, ma plano-concave lenzi anogona kushandiswa kudzikamisa kutenderera kwakatenderedzwa kunokonzerwa nemamwe malenzi muoptical system. Plano-concave lenses anobatsira pakusiyanisa danda rakatenderedzwa uye kubatanidza danda rakachinjika, anoshandiswa kuwedzera mwenje wemwenje uye kuwedzera hurefu hwakatarisana mumasisitimu emeso aripo. Aya malenzi asina kunaka anowanzo kushandiswa mumateresikopu, makamera, lasers kana magirazi kubatsira magnification masisitimu kuti awedzere compact.

Plano-concave lenzi anoita zvakanaka kana chinhu nemufananidzo zviri paabsolute conjugate ratios, yakakura kupfuura 5:1 kana isingasviki 1:5. Muchiitiko ichi, zvinokwanisika kuderedza spherical aberration, coma, uye kukanganisa. Saizvozvo ne plano-convex lenses, kuti ibudirire zvakanyanya nzvimbo yakakomberedzwa inofanirwa kutarisana nechinhu chikuru chinhambwe kana iyo isingaperi conjugate kudzikisa spherical aberration (kunze kwekunge ichishandiswa neakakwira-energy lasers apo izvi zvinofanirwa kudzoserwa kubvisa mukana weiyo chaiyo. focus).

Nekuda kwekutapurirana kwayo kwakanyanya kubva ku0.18 µm kusvika ku8.0 μm, CaF2 inoratidza yakaderera refractive index inosiyana kubva ku1.35 kusvika 1.51 uye inowanzoshandiswa pakushandisa zvinoda kufambiswa kwepamusoro mu infrared uye ultraviolet spectral ranges, ine refractive index ye1.4024 pa1. . Calcium fluoride zvakare yakanyatso makemikari inert uye inopa kuomarara kwepamusoro kana ichienzaniswa neyayo barium fluoride, uye magnesium fluoride makunakuna. Paralight Optics inopa Calcium Fluoride (CaF2) plano-concave lenses ine antireflection coatings ye2 µm kusvika 5 µm wavelength renji yakaiswa panzvimbo dzese dziri mbiri. Uku kupfekedza kunoderedza zvakanyanya kutaridzika kwepamusoro kweiyo substrate, kunopa avhareji yekufambisa inopfuura 97% pamusoro peiyo AR coating renji. Tarisai maGrafu anotevera kune mareferensi ako.

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Features:

Material:

Calcium Fluoride (CaF2)

Coating Options:

Asina kuvharwa kana neAntireflection Coatings

Focal Lengths:

Inowanikwa kubva -18 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

Plano-concave (PCV) Lens

f: Kureba kwakatarisana
fb: Back 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

    Plano-Concave (PCV) Lens

  • Index of Refraction (nd)

    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 Precision: +0.00/-0.03 mm

  • Pakati Makobvu Kushivirira

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

  • Focal Length Tolerance

    +/- 2%

  • Hunhu hwepamusoro (Scratch-Dig)

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

  • Surface Flatness (Plano Side)

    λ/4

  • Spherical Surface Power (Convex Side)

    3 λ/2

  • Surface Irregularity (Peak to Valley)

    λ/2

  • Center

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

  • Clear Aperture

    90% yeDyamita

  • AR Coating Range

    2 - 5 μm

  • Kufambisa pamusoro peCoating Range (@ 0° AOI)

    Tavg > 97%

  • Reflectance over Coating Range (@ 0° AOI)

    Ravg<1.25%

  • Dhizaini Wavelength

    588 nm

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Magirafu

♦ Transmission curve yeCaF2 substrate isina kuvharwa: kutapurirana kwepamusoro kubva ku0.18 µm kusvika ku8.0 μm
♦ Transmission curve ye2.2 mm yepakati ukobvu AR-yakavharidzirwa CaF2 Lenzi: Tavg > 97% pamusoro pe2 µm - 5 μm renji

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Transmission Curve yeAR-Coated (2 µm - 5μm) CaF2 Lenzi