1, Mokhoa oa ho khetha?
Ha ho bapisoa likhalase, ha u fihla ho khetha sehokelo sa Lens, Glasses Party ha e lahlehe?Ha u tsebe ho khetha Lense.Mona ke mokhoa oa ho khetha lense e nepahetseng bakeng sa degree ea hau.
2, index ea refractive
Lenane la refractive ke karo-karolelano ea lebelo la ho hasana la leseli sebakeng se le seng ho ea ho leseli la lisebelisoa tsa lense.
Ho phahama ha index ea refractive, ho fokotseha ha Lense, ke hore, botenya bo ts'oanang ba bohareng ba Lense, palo e lekanang ea likhato tsa Lense ea thepa e ts'oanang, e phahamisa index ea refractive ho feta tlase botenya ba Lense Edge.Ha index ea refractive ea lintho e phahame, matla a ho fetola leseli la ketsahalo a matlafala.
Hajoale, index ea mantlha ea refractive ea lilense tse marakeng ke: 1.56,1.61,1.67,1.74.
Hangata paramethara ea pele eo batho ba bangata ba kopanang le lense ke index ea refractive.Ebe ke setšoantšo se hlakileng ka ho fetesisa sa Lense ke: The Higher The refractive index, the thin Lens.
Bakeng sa litlhoko tsa botle le boima, lilense tse tšesaane ke khetho e ntle.
3, Nomoro ea Abbe
Ha u khetha lilense, lentsoe le leng la bohlokoa la data le amanang le lilense ke nomoro ea abbe.Joale nomoro ea Abelian ke eng?
Nomoro ea Ernst Abbe e bua ka "dispersion factor", e sebelisetsoang ho lekanya bohale ba lense ea setšoantšo.Ha palo ea ABBE e phahame, ho fokotseha ha ho hasana, ho hlakile haholoanyane le ho ba le phello ea sebele ea pono.
Leihlo la motho le na le nomoro ea abbe ea 58.6, 'me ha palo ea Ernst Abbe ea Lens e ntse e atamela, lense e tla phutholoha haholoanyane.
4. Refractive index index value
A, haeba degree e le likhato tse 0-200, re khothaletsa tšebeliso ea lilense tsa index tsa 1.56.
B, haeba tekanyo ea likhato tse 200-350, re khothaletsa tšebeliso ea lilense tsa index tsa 1.61.
C, haeba tekanyo ea likhato tse 350-550, re khothaletsa tšebeliso ea lilense tsa index tsa 1.67.
D, haeba tekanyo ea likhato tse 550-800 le likhato tse fetang 800, re khothaletsa tšebeliso ea lilense tsa index tsa 1.74.
5. Litlhahiso
Haeba sebaka sa moithuti se le nyane haholo, kapa boholo ba foreimi e khethiloeng e le kholo haholo, ho kgothaletswa ho eketsa index ea refractive.
Ha u khetha foreimi, motho o lokela ho nahana ka ho sebelisana le Lense:
Ha foreimi e le kholoanyane, bophara ba Lense bo ba kholoanyane, 'me mathōko a foreime a ba tenya.
U se ke ua nahana hore khetho ea e phahameng refractive index Lense, etsa bohale ba likhalase tla ba tšesaane haholo, sena ke phoso, hobane palo e tšoanang ea lilense entsoe hobane botenya ba morutoana sebaka, astigmatism, axis, foreimi boholo. le tse fapaneng.
Ka hona, ha re khetha lense e loketseng tekanyo ea rona, re lokela ho nahana ka likarolo tsohle, e le hore likhalase li ka phutholoha ho apara.
Nako ea poso: Jul-28-2021