Calcium Fluoride (CaF2)
Lilense tsa Bi-Convex
Lilense tsa bi-convex (kapa lilense tse habeli-convex) li sebetsa hantle ha ntho e le haufi le lense mme karolelano ea conjugate e le tlase. Ha sebaka sa ntho le setšoantšo li lekana (1:1 ho holisa), ha se feela hore phapanyetsano e chitja e fokotsehile, empa le ho khopama, le chromatic aberration e hlakotsoe ka lebaka la symmetry. Kahoo ke khetho e ntle ka ho fetisisa ha ntho le setšoantšo li le ka har'a li-conjugate ratios tse haufi le 1: 1 ka maballo a kenyelelitsoeng a fapaneng. E le molao oa monoana, lilense tsa bi-convex li sebetsa hantle ka har'a phapang e fokolang lipakeng tsa 5: 1 le 1: 5, li sebelisoa bakeng sa lits'ebetso tsa relay imaging (Selo sa Sebele le Setšoantšo). Ka ntle ho sebaka sena, lilense tsa plano-convex hangata li loketse haholoanyane.
Ka lebaka la phetisetso e phahameng ho tloha ho 0.18 µm ho ea ho 8.0 μm, CaF2 e bonts'a index e tlase ea refractive e fapaneng ho tloha ho 1.35 ho ea ho 1.51 mme e sebelisoa hangata bakeng sa lits'ebetso tse hlokang phetisetso e phahameng ka har'a marang-rang a infrared le ultraviolet spectral. Calcium fluoride le eona ha e sebetse hantle ka lik'hemik'hale 'me e fana ka boima bo phahameng ha bo bapisoa le barium fluoride ea eona, le magnesium fluoride motsoala. Paralight Optics e fana ka Calcium Fluoride (CaF2) Bi-Convex Lenses e fumanehang ka lebone la Broadband AR le ntlafalitsoeng bakeng sa 2 µm ho isa ho 5 μm spectral range e kentsoeng libakeng tseo ka bobeli. Ho roala hona ho fokotsa haholo ponahatso e tloaelehileng ea karoloana e ka tlase ho 1.25%, 'me e fana ka phetisetso e fetang 95% holima mefuta eohle ea AR. Sheba Kerafo e latelang bakeng sa litšupiso tsa hau.
Likaroloana:
Boitsebiso:
Calcium Fluoride (CaF2)
E teng:
E sa koahetsoeng kapa e nang le Antireflection Coatings
Bolelele ba Tsepamiso
E fumaneha ho tloha ho 15 ho isa ho 200 mm
Lisebelisoa:
E loketse ho sebelisoa le Excimer Lasers
Litlhaloso Tse Tloaelehileng:
Reference Drawing bakeng sa
Lense ea Double-convex (DCX)
Dia: Diameter
f: Bolelele ba Tsepamiso
ff: Bolelele ba Focal Length
fb: Back Focal Length
R: Radius ea Curvature
tc: Botenya ba Bohareng
te: Botenya ba moeli
H”: Sefofane se ka Morao
Tlhokomeliso: Bolelele ba ho tsepamisa maikutlo bo lekantsoe ho tloha sefofaneng se ka morao, se sa hlokeng hore se tsamaisane le botenya ba moeli.
Mekhahlelo
Ranges & Tolerances
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Substrate Material
Calcium Fluoride (CaF2)
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Mofuta
Lense ea Double-Convex (DCX)
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Index of Refraction (nd)
1.434 @ Nd:Yag 1.064 μm
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Nomoro ea Abbe (Vd)
95.31
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Thermal Expansion Coefficient (CTE)
18.85 x 10-6/℃
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Mamello ea Diameter
Ho nepahala: +0.00/-0.10mm | Ho nepahala ho Phahameng: +0.00/-0.03 mm
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Botenya Mamello
Precison: +/-0.10 limilimithara | Precison e Phahameng: +/-0.03 mm
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Mamello ea Bolelele ba Tsepamiso
+/-0.1%
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Boleng ba Bokaholimo (scratch-che)
Boemo: 80-50 | Boemo bo phahameng: 60-40
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Spherical Surface Power
3 λ/4
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Irregularity ea holim'a metsi (Peak to Valley)
λ/4
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Setsi
Precison:<3 arcmin | High Precison: <1 arcmin
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Aperture e Hlakileng
90% ea Diameter
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AR Coating Range
2 - 5 μm
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Ponahatso holim'a Mekhahlelo ea Coating (@ 0° AOI)
Ravg<1.25%
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Phetiso ea Coating Range (@ 0° AOI)
Tavg > 95%
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Moqapi oa Wavelength
588 nm
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Sekhahla sa Tšenyo ea Laser
> 5 J/cm2(100 ns, 1 Hz, @10.6μm)
Kerafo
♦ Mokokotlo oa phetiso oa 10 mm botenya, substrate e sa koaeloang ea CaF2: phetiso e phahameng ho tloha ho 0.18 µm ho ea ho 8 μm
♦ Mokokotlo oa phetisetso oa CaF2 e kolobisitsoeng ka AR e ntlafalitsoeng: Tavg > 95% ho feta 2 µm - 5 μm
