Icalcium Fluoride (CaF2)
IiLensi zePlano-Concave

Iilensi zePlano-concave ziilensi ezingezizo ezityebileyo emphethweni kunasembindini, xa ukukhanya kudlula kuzo, kuyahlukana kwaye indawo ekugxilwe kuyo yinyani.Ubude bawo obugxininisekile bungalunganga, kunye ne-radius ye-curvature yeendawo ezigobileyo.Ngenxa yokuphambuka kwesangqa esinegeyibhile, iilensi zeplano-concave zinokusetyenziswa ukulungelelanisa ukuphambuka okungqukuva okubangelwa zezinye iilensi kwinkqubo yokukhanya.Iilensi zePlano-concave ziluncedo ekuphambukiseni umqadi odibeneyo kunye nokudibanisa umqadi oguquguqukayo, zisetyenziselwa ukwandisa izibane zokukhanya kunye nokwandisa ubude obugxilwe kwiinkqubo ezikhoyo zamehlo.Ezi lensi zingalunganga ziqhele ukusetyenziswa kwiiteleskopu, iikhamera, iilaser okanye iiglasi ukunceda iinkqubo zokukhulisa ukuba zihlangane ngakumbi.

Iilensi zePlano-concave zisebenza kakuhle xa into kunye nomfanekiso ukwi-absolute conjugate ratios, enkulu kuno-5:1 okanye ngaphantsi kwe-1:5.Kule meko, kunokwenzeka ukunciphisa i-spherical aberration, coma, kunye nokuphazamiseka.Ngokufanayo neelensi zeplano-convex, ukuphumeza ukusebenza kakuhle okuphezulu umphezulu ogobileyo kufuneka ujongane nowona mgama mkhulu wento okanye i-conjugate engapheliyo ukunciphisa ukuphambuka okungqukuva (ngaphandle kwaxa isetyenziswa ngeelaser ezinamandla apho oku kufuneka kubuyiselwe umva ukuze kupheliswe ukubakho kwenyani. gxila).

Ngenxa yokuhanjiswa kwayo okuphezulu ukusuka kwi-0.18 µm ukuya kwi-8.0 μm, i-CaF2 ibonisa isalathisi esisezantsi se-refractive ukusuka kwi-1.35 ukuya kwi-1.51 kwaye isetyenziswa ngokuqhelekileyo kwizicelo ezifuna ukuhanjiswa okuphezulu kwi-infrared kunye ne-ultraviolet spectral ranges, ine-infrared index of 1.428 kwi-1.428 kwi-1. .I-calcium fluoride ikwayikhemikhali inert kwaye inika ubunzima obuphezulu xa kuthelekiswa ne-barium fluoride, kunye nabazala be-magnesium fluoride.IParalight Optics ibonelela ngeCalcium Fluoride (CaF2) iilensi zeplano-concave ezineeconsi ezichasene nokukhanya kuluhlu lwe-2 µm ukuya kwi-5 µm ubude bobude obufakwe kuyo yomibini imiphezulu.Olu gquba lunciphisa kakhulu ukubonakala komphezulu we-substrate, luvelisa usasazo oluyi-avareji olungaphezulu kwe-97% kulo lonke uluhlu lokugquma kwe-AR.Jonga ezi Grafu zilandelayo kwiireferensi zakho.

Iimbonakalo:

Izinto:

Icalcium Fluoride (CaF2)

Iinketho zokugquma:

Ingagqunywanga okanye ngeAntireflection Coatings

Ubude bokuJonga:

Ifumaneka ukusuka -18 ukuya -50 mm

Usetyenziso:

Ilungele ukusetyenziswa kwi-Excimer Laser Applications, kwi-Spectroscopy kunye ne-Cooled thermal Imaging.

Iingcaciso eziqhelekileyo:

pro-enxulumene-ico — Umzobo weReferensi ye

I-Plano-concave (PCV) iLens

f: Ubude bokuJonga
f_b: Ubude bokujongwa ngasemva
R: Irediyasi yeCurvature
t_c: Ukutyeba embindini
t_e: Ukutyeba komda
H”: Inqwelo-moya eyiNqununu yoBuyela

Qaphela: Ubude obugxininise bumiselwa ukusuka kwinqwelo-moya eyintloko yangasemva, engahambelaniyo nobukhulu bomphetho.

Iiparamitha

Uluhlu kunye noNyamezelo

I-Substrate Material

Icalcium Fluoride (CaF2)
Uhlobo

ILens yePlano-Concave (PCV).
Isalathiso sokuRefraction (nd)

1.428 @ Nd:Yag 1.064 μm
Inombolo ka-Abbe (Vd)

95.31
I-Thermal Expansion Coefficient (CTE)

18.85 x 10^-6/℃
Ukunyamezela kwe-Diameter

Precison: +0.00/-0.10mm |Ukuchaneka okuphezulu: +0.00/-0.03 mm
Unyamezelo lokutyeba kwiziko

Precison: +/-0.10 mm |Ukuchaneka okuphezulu: +/-0.03 mm
Unyamezelo loBude obuJolisekileyo

+/- 2%
Umgangatho womphezulu (Scratch-Dig)

Precison: 80-50 |Ukuchaneka okuphezulu: 60-40
Umphezulu oMcaba (icala lePlano)

λ/4
Amandla oMphezulu oSpherical (icala leConvex)

3 λ/2
i-Surface irregularity (iNcopho ukuya kwiNtlambo)

λ/2
Iziko

Umzobo:<3 arcmin |Ukuchaneka okuphezulu:< 1 arcmin
Umngxuma ocacileyo

90% yoMdayamitha
Uluhlu lwe-AR Coating

2 - 5 μm
Ugqithiso phezu koLunge loKutyabeka (@ 0° AOI)

Tavg > 97%
IReflectance phezu koLunge loKutyabeka (@ 0° AOI)

Ravg< 1.25%
Yila ubude beWaveleng

588nm