lenses bi-concave (ma ọ bụ lenses abụọ concave) bụ nhọrọ kacha mma mgbe ihe na onyonyo nọ na oke conjugate zuru oke (ebe dị anya nke kewara site na ihe onyonyo) nso 1: 1 nwere oghere ntinye na-atụgharị, dị ka ọ dị na bi-convex. lenses. A na-eji ha maka ịmegharị onyonyo (ihe mebere na onyonyo) ngwa. Mgbe ihe nkwalite zuru oke achọrọ ma ọ bụ ihe na-erughị 0.2 ma ọ bụ karịa 5, lenses plano-concave na-adịkarị mma.
N'ihi mgbasa ya dị elu site na 0.18 µm ruo 8.0 μm, Calcium fluoride na-egosiputa akara ngosi dị ala dị iche iche site na 1.35 ruo 1.51 ma na-ejikarị ya eme ihe maka ngwa na-achọ nnukwu nnyefe na infrared na ultraviolet spectral ranges, ọ nwere ntugharị refractive nke 1.428 na 1.428. µm. CaF2 bụkwa ihe na-adịghị ahụkebe nke kemịkalụ ma na-enye ike dị elu ma e jiri ya tụnyere barium fluoride ya na ndị ikwu magnesium fluoride. Ọnụ ụzọ mmebi laser dị oke elu na-eme ka ọ baa uru maka iji laser excimer. Paralight Optics na-enye lenses bi-concave nwere mkpuchi mgbochi maka ma ọ bụ 3 ruo 5 µm nso ogologo ikuku. Ihe mkpuchi a na-ebelata nke ọma nkezi ngosipụta nke mkpụrụ ihe na-erughị 2.0%, na-enyefe nnyefe dị elu karịa 96% n'ofe mkpuchi AR dum. Lelee eserese ndị a maka ntụnyere aka gị.
Calcium Fluoride (CaF2)
Ekpuchighị ma ọ bụ jiri mkpuchi mkpuchi nchegharị
Dị site na -15 ruo -50 mm
Kwesịrị ekwesị maka ojiji na ngwa Laser Excimer, na Spectroscopy na Cooled Thermal Imaging
Ihe eji eme ihe
Calcium Fluoride (CaF2)
Ụdị
Igwe oghere abụọ-Concave (DCV)
Index nke ntụgharị uche
1.428 @ Nd: Yag 1.064 μm
Nọmba Abbe (Vd)
95.31
Ọnụ ego Mgbasawanye okpomọkụ (CTE)
18.85 x 10-6/ ℃
Nkwadebe dayameta
Nkenkenke: +0.00/-0.10mm | Elu nkenke: +0.00/-0.03 mm
Ọkpụrụkpụ ndidi
Nkenkenke: +/-0.10 mm | Elu nkenke: +/-0.03 mm
Nkwenye Ogologo Focal
+/- 2%
Ogo elu (scratch-dig)
Nkenkenke: 80-50 | Elu nke ọma: 60-40
Ike dị n'elu ala
3 λ/2
Ọdịghị mma nke elu (Olu ruo Ndagwurugwu)
λ/2
Center
Nkenkenke:<3 arcmin | Elu nke ọma: <1 arcmin
Kpochapụ oghere
90% nke dayameta
Oke mkpuchi AR
3-5 μm
Mbufe gafere oke mkpuchi (@ 0° AOI)
Tavg> 95%
Ntụgharị uche n'elu oke mkpuchi mkpuchi (@ 0° AOI)
Ravg<2.0%
Chepụta ogologo ogologo
588 nm