Kalsium Fluoride (CaF2)
Nā Lens Bi-Convex
ʻOi aku ka maikaʻi o nā lens bi-convex (a i ʻole nā lens convex pālua) ke kokoke ka mea i ka lens a haʻahaʻa ka ratio conjugate.Ke like ka mea a me ka mamao o ke kiʻi (1:1 ka hoʻonui ʻana), ʻaʻole i hoʻemi ʻia ka aberration spherical wale nō, akā, ua hoʻopau ʻia ka aberration chromatic ma muli o ka symmetry.No laila, he koho maika'i loa ia inā aia ka mea a me ke ki'i ma nā ratio conjugate piha kokoke i ka 1:1 me nā kaola ho'okomo ho'oka'awale.E like me ke kānāwai o ka manamana nui, hana maikaʻi nā lens bi-convex i loko o ka liʻiliʻi aberration ma nā ratio conjugate ma waena o 5:1 a me 1:5, hoʻohana ʻia lākou no nā noi relay imaging (Real Object and Image).Ma waho o kēia laulā, ʻoi aku ka maikaʻi o nā lens plano-convex.
Ma muli o kāna hoʻouna kiʻekiʻe mai 0.18 µm a i 8.0 μm, hōʻike ʻo CaF2 i kahi kuhikuhi refractive haʻahaʻa e ʻokoʻa ana mai ka 1.35 a hiki i 1.51 a hoʻohana mau ʻia no nā noi e koi ana i ka hoʻouna kiʻekiʻe ma nā pae spectral infrared a me ultraviolet.ʻAʻole inert kemika ka calcium fluoride a hāʻawi i ka ʻoi aku ka paʻakikī i hoʻohālikelike ʻia me kāna barium fluoride, a me nā hoahānau fluoride magnesium.Hāʻawi ʻo Paralight Optics i ka Calcium Fluoride (CaF2) Bi-Convex Lenses i loaʻa me kahi uhi AR broadband i hoʻopaʻa ʻia no ka 2 µm a 5 μm spectral range i waiho ʻia ma nā ʻaoʻao ʻelua.Hoʻemi nui kēia uhi ʻana i ka awelika o ka nānā ʻana o ka substrate ma lalo o 1.25%, e hāʻawi ana i ka hoʻoili awelika ma mua o 95% ma luna o ka laulā AR coating āpau.E nānā i nā kiʻi ma lalo no kāu mau kuhikuhi.
Nā hiʻohiʻona:
Material:
Kalsium Fluoride (CaF2)
Loaʻa:
ʻAʻole i uhi ʻia a i ʻole me nā ʻāpana Antireflection
Nā lōʻihi kiko:
Loaʻa mai 15 a 200 mm
Nā noi:
Kūpono no ka hoʻohana ʻana me Excimer Lasers
Nā kikoʻī maʻamau:
Kii Kuhikuhi no
Leni-convex lua (DCX).
Diamita: Anawaena
f: Loihi Kūlana
ff: Ka Loihi Makana o mua
fb: Ka lōʻihi o hope
R: Uku o ka Curvature
tc: Mānoanoa waena
te: Mānoanoa lihi
H”: Ka Mokulele Poʻokela Ma hope
'Ōlelo Aʻo: Hoʻoholo ʻia ka lōʻihi kiko mai ka mokulele poʻokela hope, ʻaʻole pono e laina me ka mānoanoa o ka lihi.
Nā ʻāpana
Nā pae a me nā hoʻomanawanui
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Mea Papahana
Kalsium Fluoride (CaF2)
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ʻAno
Nā Leni Kaulua-Convex (DCX).
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Papa kuhikuhi o ka Hoʻopololei (nd)
1.434 @ Nd:Yag 1.064 μm
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Helu Abbe (Vd)
95.31
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ʻO ka Coefficient Hoʻonui Thermal (CTE)
18.85 x 10-6/℃
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Hoʻomanawanui anawaena
Pono: +0.00/-0.10mm |Kiekie Kiekie: +0.00/-0.03 mm
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Hoʻomanawanui mānoanoa
Pono: +/-0.10 mm |Kiekie Kiekie: +/-0.03 mm
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Hoʻomanawanui lōʻihi
+/-0.1%
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ʻAno ʻili (ʻeli ʻuʻuku)
Pono: 80-50 |Kiʻekiʻe Precison: 60-40
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Mana Ili Poepoe
3 λ/4
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Kūlike ʻole o ka ʻili (Peak to Valley)
λ/4
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Ke kikowaena
pololei:<3 arcmin |Kiekie Kiekie: <1 arcmin
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Mākaʻikaʻi Aperture
90% o ke Anawaena
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AR Lahui
2 - 5 μm
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ʻO ka noʻonoʻo ʻana ma luna o ka pae hoʻopili (@ 0° AOI)
ʻO Ravg< 1.25%
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Ka hoʻouna ʻana ma luna o ka pae hoʻopili (@ 0° AOI)
Helu > 95%
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Ka lōʻihi o ka nalu
588 nm
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Paepae Poino Laser
>5 J/cm2(100 ns, 1 Hz, @10.6μm)
Nā kaha kiʻi
♦ Ka pihi hoʻouna o 10 mm mānoanoa, pani ʻole CaF2 i uhi ʻole ʻia: hoʻouna kiʻekiʻe mai 0.18 µm a i 8 μm
♦ Ka pihi hoʻouna o ka CaF2 i uhi ʻia me AR i hoʻonui ʻia: Tavg > 95% ma luna o ka laulā 2 µm - 5 μm
