Calcium Fluoride (CaF2)
Lilense tsa Plano-Concave
Lilense tsa Plano-concave li sebetsa hantle ha ntho le setšoantšo li le ka har'a li-conjugate ratios, tse kholo ho feta 5:1 kapa ka tlase ho 1:5. Tabeng ena, hoa khoneha ho fokotsa ho ferekana ha spherical, coma, le ho khopama. Joalo ka lilense tsa plano-convex, ho fihlela katleho e kholo, bokaholimo bo kobehileng bo lokela ho shebana le sebaka se seholohali sa ntho kapa conjugate e sa feleng ho fokotsa phallo ea spherical (ntle le ha e sebelisoa ka li-laser tse nang le matla a phahameng moo sena se lokelang ho khutlisoa ho felisa monyetla oa ho ba teng. tsepamisa).
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 isa ho 1.51 mme e sebelisoa hangata bakeng sa lits'ebetso tse hlokang phetisetso e phahameng ho infrared le ultraviolet spectral index, e na le index ea refractive ea 1.4028 ho 1. . 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) lilense tsa plano-concave tse nang le masela a thibelang khanya bakeng sa sebaka sa 2 µm ho isa ho 5 µm wavelength se kentsoeng libakeng tseo ka bobeli. Koko ena e fokotsa haholo ponahalo ea bokaholimo ba karoloana, e fana ka phetisetso e fetang 97% holim'a mefuta eohle ea likhoele tsa AR. Sheba Kerafo e latelang bakeng sa litšupiso tsa hau.
Likaroloana:
Boitsebiso:
Calcium Fluoride (CaF2)
Likhetho tsa ho Koahela:
E sa koahetsoeng kapa e nang le Antireflection Coatings
Bolelele ba Tsepamiso
E fumaneha ho tloha ho -18 ho isa ho -50 mm
Lisebelisoa:
E loketse ho sebelisoa ho Excimer Laser Applications, ho Spectroscopy le Cooled Thermal Imaging.
Litlhaloso Tse Tloaelehileng:
Reference Drawing bakeng sa
Plano-concave (PCV) Lense
f: Bolelele ba Tsepamiso
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 Plano-Concave (PCV)
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Index of Refraction (nd)
1.428 @ 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
Precison: +0.00/-0.10mm | Ho nepahala ho Phahameng: +0.00/-0.03 mm
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Mamello ea Botenya ba Setsi
Precison: +/-0.10 limilimithara | Ho nepahala ho Phahameng: +/-0.03 mm
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Mamello ea Bolelele ba Tsepamiso
+/- 2%
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Boleng ba Bokaholimo (Scratch-Dig)
Boemo: 80-50 | Ho nepahala ho Phahameng: 60-40
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Bophahamo ba Bokaholimo (Lehlakore la Plano)
λ/4
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Spherical Surface Power (Lehlakore la Convex)
3 λ/2
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Irregularity ea holim'a metsi (Peak to Valley)
λ/2
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Setsi
Precison:<3 arcmin | Ho nepahala ho Phahameng:<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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Phetiso ea Coating Range (@ 0° AOI)
Tavg > 97%
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Ponahatso holim'a Mekhahlelo ea Coating (@ 0° AOI)
Ravg<1.25%
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Moqapi oa Wavelength
588 nm
Kerafo
♦ Mokokotlo oa phetisetso ea substrate e sa koaeloang ea CaF2: phetiso e phahameng ho tloha ho 0.18 µm ho ea ho 8.0 μm
♦ Mokokotlo oa phetisetso oa botenya ba 2.2 mm bohareng ba AR-coated CaF2 Lense: Tavg > 97% ho feta 2 µm - 5 μm
