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 bazo obugxininise bunegethi, kunye ne-radius ye-curvature yeendawo ezigobileyo.Ngenxa yokuphambuka kwazo okungqukuva okungekuhle, iilensi zeplano-concave zinokusetyenziswa ukulungelelanisa ukuphambuka okungqukuva okubangelwa zezinye iilensi kwinkqubo yokukhanya.Iilensi zePlano-concave ziluncedo ekuphambukeni kwe-collimated beam kunye ne-collimating i-converrgent beam, zisetyenziselwa ukwandisa izibane zokukhanya kunye nokwandisa ubude obugxilwe kwiinkqubo ezikhoyo zokukhanya.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 nomgama wento enkulu okanye i-conjugate engapheliyo ukunciphisa ukuphambuka okungqukuva (ngaphandle kwaxa isetyenziswa ngeelaser ezinamandla apho oku kufuneka kubuyiselwe umva ukuze kupheliswe ukubakho kwenyani. ingqalelo).

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.I-Paralight 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.Oku kugquma kunciphisa kakhulu ukubonakaliswa komphezulu we-substrate, ivelisa umndilili wosasazo olungaphezulu kwe-97% kulo lonke uluhlu lokugquma kwe-AR.Jonga ezi Grafu zilandelayo kwiireferensi zakho.

Iimbonakalo:

Izinto:

Icalcium Fluoride (CaF2)

Ukhetho loKugquma:

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 kweZiko

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

I-90% ye-Diameter
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