Ukutenxa kumbindi kumacandelo okubona inkcazo kunye nesigama

Ukutenxa kwiziko leizinto ezibonakalayoluphawu olubaluleke kakhulu lweiilensi zamehlokunye nento ebalulekileyo echaphazela ukubonwa kweenkqubo ze-optical. Ukuba i-lens ngokwayo inokuphambuka okukhulu kweziko, ngoko nangona ubume bayo bomhlaba bucutshungulwa ngokukodwa, umgangatho olindelekileyo womfanekiso awukafumaneki xa usetyenziswa kwi-optical system. Ngoko ke, ingcamango kunye novavanyo lokutenxa kwiziko lezinto ezibonakalayo Ingxoxo kunye neendlela zokulawula ziyimfuneko kakhulu. Nangona kunjalo, zininzi iinkcazo kunye nemigaqo malunga nokutenxa kwiziko kangangokuba uninzi lwabahlobo abanalo ukuqonda okucokisekileyo kwesi salathisi. Enyanisweni, kulula ukungaqondi kwaye udibanise. Ke ngoko, ukuqala kweli candelo, siya kugxila kumphezulu we-spherical, umphezulu we-aspheric, Inkcazo yophambuko lweziko le-cylindrical lens element kunye nendlela yovavanyo iya kwaziswa ngokucwangcisiweyo ukunceda wonke umntu aqonde ngcono kwaye aqonde esi salathisi, ukuze kuphuculwe ngcono. umgangatho wemveliso kumsebenzi wokwenene.

2 Imigaqo enxulumene nokutenxa kwiziko

Ukuze kuchazwe ukutenxa okusembindini, kuyimfuneko kuthi ukuba sibe nokuqonda kwangaphambili kwezi nkcazelo zilandelayo zesigama sengqiqo eqhelekileyo.

1. Umgca we-Optical

Yi-axis yethiyori. I-element optical okanye i-optical system i-rotationally symmetrical malunga ne-axis yayo yokukhanya. Kwilensi engqukuva, i-axis ebonakalayo ngumgca odibanisa amaziko emigangatho emibini engqukuva.

2. Umgca wereferensi

Yi-axis ekhethiweyo yecandelo le-optical okanye inkqubo, enokusetyenziswa njengereferensi xa uhlanganisa icandelo. I-axis yereferensi ngumgca othe ngqo ochanekileyo osetyenziselwa ukuphawula, ukukhangela kunye nokulungisa ukutenxa kumbindi. Lo mgca othe tye kufuneka ubonise i-optical axis yenkqubo.

3. Indawo ekubhekiselwa kuyo

Yindawo yokuhlangana ye-datum axis kunye nomphezulu wecandelo.

4. I-engile yokuthambekela kwengqukuva

Ekudibaneni kwe-axis yedatum kunye nomphezulu wecandelo, i-engile phakathi komphezulu oqhelekileyo kunye ne-datum axis.

5. I-engile yokuthambeka kwe-aspheric

I-engile phakathi kwe-axis ejikelezayo ye-symmetry ye-aspheric surface kunye ne-datum axis.

6. Umgama osecaleni komphezulu we-aspheric

Umgama phakathi komphezulu we-aspherical vertex kunye ne-datum axis.

3 Iingcaciso eziyeleleneyo zokutenxa kwiziko

Ukutenxa kumbindi womphezulu ongqukuva kulinganiswa nge-engile phakathi kwesiqhelo sendawo yesalathiso yobuso obubonakalayo kunye ne-axis yereferensi, oko kukuthi, i-engile yokuthambekela kumphezulu ongqukuva. Le engile ibizwa ngokuba yi-surface inclination angle, emelwe ngunobumba wesiGrike χ.

Ukutenxa kumbindi womphezulu we-aspheric imelwe yi-engile yokuthambekela χ yomphezulu we-aspheric kunye nomgama osecaleni d womphezulu we-aspheric.

Kubalulekile ukuqaphela ukuba xa uvavanya ukutenxa kumbindi weelensi enye, kufuneka uqale ukhethe umphezulu omnye njengomgangatho wesalathiso ukuze uvavanye ukutenxa okuphakathi komnye umgangatho.

Ukongeza, ekusebenzeni, ezinye iiparameters zinokusetyenziselwa ukubonisa okanye ukuvavanya ubungakanani benxantathu yeziko lecandelo, kubandakanya:

1. I-Edge run-out ERO, ebizwa ngokuba yi-Edge run-out ngesiNgesi. Xa icandelo lihlengahlengiswa, okukhona ukubaleka okukhulu kwisangqa esinye somphetho, kokukhona ukutenxa kumbindi.

2. Umahluko wobukhulu bomphetho we-ETD, ebizwa ngokuba ngumahluko wobukhulu be-Edge ngesiNgesi, ngamanye amaxesha uchazwa njenge-△t. Xa umphetho wobunzima becandelo mkhulu, ukutenxa kumbindi walo kuya kuba kukhulu.

3. Itotali yokuphela kwe-TIR inokuguqulelwa njengendawo yokuphuma yomfanekiso iyonke okanye isalathisi esipheleleyo sokuphuma. NgesiNgesi, yiTotal image run-out okanye Itotali ebonisiweyo yokuphela.

Kwinkcazo yokuqala yesiNtu, ukutenxa kumbindi kuya kuphawulwa kwakhona ngomahluko wombindi ongqukuva C okanye umahluko we-eccentricity C,

I-Spherical center aberration, emelwe ngunobumba omkhulu u-C (ngamanye amaxesha ikwamelwe ngunobumba omncinci a), ichazwa njengokutenxa kwe-axis yejometri yesangqa sangaphandle se-lens ukusuka kwi-axis ye-optical kumbindi we-curvature ye-lens, kwiimilimitha. Eli gama lisetyenziswe ixesha elide Lisetyenziselwa inkcazo yokuphambuka kweziko, kwaye lisasetyenziswa ngabavelisi ukuza kuthi ga ngoku. Esi salathi-nkqubela sivavanywa ngokubanzi ngesixhobo sokubonisa indawo esembindini.

I-eccentricity, emelwe ngonobumba abancinci c, ngumgama phakathi kwendawo yokuhlangana ye-axis yejometri yenxalenye ye-optical part okanye indibano ehlolwayo kwinqwelomoya ye-node kunye ne-node yangasemva (le nkcazo ngenene ayicacanga kakhulu, akufuneki sinyanzelise. ukuqonda kwethu), ngokwemigaqo yamanani Kumphezulu, i-eccentricity ilingana neradiyasi yesangqa sokubethelwa komfanekiso xa i-lens ijikeleza i-axis yejometri. Ngokuqhelekileyo ivavanywa ngesixhobo sokugxila kwindawo yokudlulisela.

4. Ubudlelwane bokuguqulwa phakathi kweeparamitha ezahlukeneyo

1. Ubudlelwane phakathi kwe-engile yokuthambekela komphezulu χ, umahluko wombindi wesphere C kunye nomahluko wobukhulu becala Δt