Calcium Fluoride (CaF2)
Lilense tsa Bi-Concave
Lilense tsa bi-concave (kapa lilense tse habeli) ke khetho e ntle ka ho fetisisa ha ntho le setšoantšo li le ka har'a li-conjugate ratios (sebaka sa ntho e arotsoeng ke disdance ea setšoantšo) haufi le 1: 1 ka maballo a kenang a fetohang, joalo ka ha ho le joalo ka bi-convex. lilense. Li sebelisoa bakeng sa lits'ebetso tsa replay (ntho ea sebele le setšoantšo). Ha kholo e batloang e le ka tlase ho 0.2 kapa e kholo ho feta 5, lilense tsa plano-concave hangata li loketse haholoanyane.
Ka lebaka la phetiso ea eona e phahameng ho tloha ho 0.18 µm ho ea ho 8.0 μm, Calcium fluoride 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 1.428 ho 1.428 ho 1.428 µm. CaF2 e boetse e na le lik'hemik'hale tse sa sebetseng hantle 'me e fana ka boima bo phahameng ha bo bapisoa le barium fluoride ea eona, le bo-motsoala ba magnesium fluoride. Moeli oa eona o phahameng haholo oa ts'enyo ea laser o etsa hore e be molemo ho sebelisoa ka li-laser tsa excimer. Paralight Optics e fana ka lilense tsa Calcium Fluoride (CaF2) Bi-concave tse nang le mekhabiso e thibelang ho khanya bakeng sa sebaka sa 3 ho isa ho 5 µm wavelength. Ho roala hona ho fokotsa haholo ponahatso e akaretsang ea karoloana e ka tlase ho 2.0%, 'me e fana ka phetisetso e kholo ho feta 96% ho pholletsa le mefuta eohle ea likhoele tsa 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 -50 mm
Lisebelisoa:
E loketse ho sebelisoa ho Excimer Laser Applications, ho Spectroscopy le Cooled Thermal Imaging.
Litlhaloso Tse Tloaelehileng:
Reference Drawing bakeng sa
Lense ea Double-Concave (DCV)
f: Bolelele ba Tsepamiso
fb: Back Focal Length
ff: Bolelele ba 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-Concave (DCV)
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Index ea Refraction
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 | Precison e 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
+/-2%
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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/2
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Irregularity ea holim'a metsi (Peak to Valley)
λ/2
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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
3 - 5 μm
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Phetiso ea Coating Range (@ 0° AOI)
Tavg > 95%
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Ponahatso holim'a Mekhahlelo ea Coating (@ 0° AOI)
Ravg<2.0%
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Moqapi oa Wavelength
588 nm
Kerafo
♦ Mokokotlo oa phetisetso ea substrate e sa koahetsoeng ea CaF2: phetiso e phahameng ho tloha 0.18 ho ea ho 8.0 μm
♦ Mokokotlo oa phetisetso oa Lense ea CaF2 e koahetsoeng ke AR: Tavg > 95% ho feta 3 - 5 μm
♦ Mokokotlo oa phetisetso ea Lense e ntlafalitsoeng ea AR-coated CaF2: Tavg > 95% ho feta 2 - 5 μm
Phetisetso Curve ea AR-coated (3 µm - 5 μm) CaF2 Lense
