Ukubuthwa lens

Lens - umzimba ngaphaya leyo ngumda imiphezulu ezimbini ukulenza. Olona phawu engundoqo ukukwazi lens ukunika izifundo umfanekiso. Iiplastiki ngengqondo kunye yokwenene, omfusa kunye ngqo, lancitshiswa yande. Imilinganiso linear yomfanekiso utshintsho kuxhomekeka kwindawo bezinto.

Zoom lens - lulwahlulo umfanekiso yomgama kunye nobukhulu into le. I sikrini factor (K) lungabonakaliswa yi ifomula: K = u / V, apho u umgama ukusuka ilens ukuya into, kanye v - Umgama ukusuka ilens kumfanekiso. I sikrini factor ngumlinganiselo zobukhulu indlela yomgama yento ubungakanani bomfanekiso amakhulu okanye ezincinane.

Ngesayensi, kukho izinto ezifana nokuqokelela lens yehlukana. Okokuqala yatyeba phakathi kwaye sokurhuqa ngasemdeni, elinesibini - bonke phezu koko. Ezi lens luphawulwa ubude ebalulekile (ukusuka kwiziko enombala ukuya yinqontsonqa: kwi ilens yehlukana, oko negative, yaye ukuqokelelwa - HIV), kunye namandla woqondo leyo ulinganiswa diopters. Ubude ebalulekile imitha omnye 1 diopter. Amandla kokugcina ixhomekeke ugobile radii ngayo imiphezulu lens ungqukuva, yaye umbandela (index zokunganyangeki kuyo) yenziwe kuzo. Yeyona njengamacala na ubude.

Ilens yokuqokelela lunomahluko ukuba uchithachitha:

1. Uqokelela ukukhanya.

2. Kungqameko phakathi thinner.

3. Le yingqokelela inani elikhulu okwandisa phakathi lens (kodwa hayi kwi kungqameko) kwezi itriangular.

4. Ingqwalasela lens (okt kwinqanaba ekudibaneni kwe-reyi emva refraction, ibekwe kwi esqwini engundoqo woqondo), wokwenene a (hayi ngengqondo), njengoko imitha phambana bona, kunokuba phambili yabo.

5. Ukukwazi ukuqokelela imitha ngesiganeko kumphezulu ngaxa lithile, apho ibekwe phezu kwelinye icala lens.

6. Ilens yokuqokelela abanokuncedwa kumxholo lilo naliphi na iqela, emasikwini imiqadi baya kuhlanganisana, ekubeni lens okunjalo focus ezimbini. Ngomhla we-axis woqondo le nakujoliso olutsha ngaphambili nangesemva akhiwe ngapha nangapha lalo umgama yinqontsonqa ukusuka kwindawo lens yinqununu.

Zokwakha lens

• glass zwi. Zibonisa ukuxhathisa lobushushu eliphezulu kwaye bandwidth yelanga eyingozi. Njengoko egalelwe ukuba iikhemikhali ezininzi;

• electronic. Le nto idibanisa usasazeko eliphezulu ukuba ixabiso elikhulu elililo index zokunganyangeki kuluhlu lwe infrared, Ibar ngokupheleleyo kuluhlu obubonakalayo spectrum;

• neeplastikhi organic. Xa ukulolonga sinako ukwenza engaxabisi lens aspherical, asetyenziswa mihla. lens contact Soft asetyenziswa zamehlo, ezenziwe ngezinto zokuba indalo biphasic. Abicah-gidrolievye linzyblagodarya ioksijini permeability kunye neempawu aphezulu esibamba yomthonyama ethi idibanise zingasetyenziswa ngokuqhubekayo inyanga;

• nezinye izinto.

iintlobo lens

lens Ukuqokelela ziye zohlulwa ngokwendidi 3:

• biconcave;

• plano-khaxa;

• a phakathi-khaxa.

lens Ukunaba nazo zohlulwa ngokwendidi 3:

• biconcave;

• plano-phakathi;

• khaxa-phakathi.

Iilensi ingaba elula, kwaye zinokudityaniswa ukusuka ezininzi - ukwakha ezinye uhlobo iinkqubo ezintsonkothileyo okubonakalayo. inkqubo Lens, amalungiselelo mgama, ogama nezamazembe kukhomba sibizwa embindini.

Ukusetyenziswa lenses

Kuba iyimfuneko ezivelisa ngeeteleskopu, iimikroskopu, omabonakude, iikhamera, iiprojektha, izinto enombala , njl Ezi lens zisetyenziswa kakhulu zamehlo, njengoko kufuneka ukuba abantu abaneziphene umbono ezifana ukubona kunye hyperopia. Ngaphezu koko, lens yokuqokelela enye isetyenziswa iglasi.