1.56 Bifocal Flat top / Round Top / Blended HMC optical lens

Kufotokozera Kwachidule:

Magalasi a Bifocal ndi magalasi owonera omwe ali ndi malo owongolera ndipo amagwiritsidwa ntchito makamaka pokonza presbyopia. Malo omwe magalasi a bifocal amawongolera masomphenya akutali amatchedwa dera la masomphenya akutali, ndipo malo omwe amawongolera masomphenya apafupi amatchedwa dera la masomphenya apafupi ndi malo owerengera. Nthawi zambiri, malo akutali ndi akulu, motero amatchedwanso gawo lalikulu, ndipo malo apafupi ndi ang'onoang'ono, otchedwa sub slice.

Tumizani imelo kwa ife

Tsatanetsatane wa Zamalonda

Ma tag a Zamalonda

Tsatanetsatane wa Kupanga

Malo Ochokera:	Jiangsu	Dzina la Kampani:	BORIS
Nambala ya Chitsanzo:	BifocalLenzi	Zipangizo za Magalasi:	NK-55
Zotsatira za Masomphenya:	Bifocal	Filimu Yophimba:	UC/HC/HMC
Mtundu wa Magalasi:	Choyera	Mtundu Wokutira:	Chobiriwira/Buluu
Mndandanda:	1.56	Mphamvu Yokoka:	1.28
Chitsimikizo:	CE/ISO9001	Mtengo wa Abbe:	38
M'mimba mwake:	70mm	Kapangidwe:	Lathyathyathya/Lozungulira/Losakanikirana

Pali madigiri awiri okha pa lenzi ya bifocales, zomwe zimagawidwa m'magawo awiri: kuwala kwapamwamba ndi kuwala kotsika. Kuwala kwapamwamba ndi kuwala kotsika kumatha kukhala myopia, hyperopia, astigmatism, ndi zina zotero, koma kuwala kwapamwamba kumakhala kozama kuposa kuwala kwapamwamba kwa myopia ndi kosaya kwambiri kwa kuwona patali.

Progressive imapangidwa pogwiritsa ntchito kuwala kwawiri. Sikuti imangokhala ndi mawonekedwe a kuwala kwawiri, kuphatikizapo kuwala kwapamwamba ndi kuwala kwapansi, komanso imakhala ndi njira yocheperako pakati. Mlingo pakati pa kuwala kwapamwamba ndi kuwala kwapansi ndi njira yosinthira pang'onopang'ono.

Pamwamba, n'zoonekeratu kuti pali kusiyana pakati pa kuwala kawiri. Mzere wolekanitsa kapena malo olumikizirana pakati pa kuwala kwapamwamba ndi kuwala kotsika umaoneka, koma pamwamba pa lenzi yopita patsogolo sipangathe kuwona kusiyana kulikonse.

Ndi malo osinthira, palibe vuto la kulumpha kwa njovu. Izi zikutanthauza kuti, pang'onopang'ono kuchokera kutali kupita pafupi, kuchokera pafupi kupita kutali, ngati palibe malo osinthira, kuchokera pafupi kupita kutali, kuchokera kutali kupita pafupi, palibe buffer overshoot.

Chiyambi cha Kupanga

Bifocal imatanthauza mphamvu ziwiri zosiyana za dioptric pa lenzi imodzi, mphamvu ziwiri za dioptricndi dMalo omwe amagwiritsidwa ntchito poona patali, omwe amapezeka m'malo osiyanasiyana a lenzi, amatchedwa dera lakutali, lomwe lili kumtunda kwa lenzi; malo omwe amagwiritsidwa ntchito poona pafupi amatchedwa dera lapafupi, lomwe lili kumunsi kwa lenzi.

Ubwino wa ma bifocal: Mutha kuona zinthu patali kudzera m'dera la masomphenya akutali a ma lens awiriawiri, ndipo mutha kuwona zinthu patali kudzera m'dera la masomphenya apafupi a ma lens awiriawiri omwewo. Simukuyenera kunyamula magalasi awiriawiri, ndipo simukuyenera kusintha pakati pa mtunda ndi pafupi ndi magalasi pafupipafupi.

Zoyipa za ma bifocal: Malo owonera ndi ochepa poyerekeza ndi a magalasi owonera kamodzi, makamaka pafupi ndi maso. Mwachitsanzo, kuwerenga mabuku ndi manyuzipepala kuyenera kugwirira ntchito limodzi ndi mayendedwe a mitu. Pali zolakwika za maso zomwe zimachitika chifukwa cha kulumpha ndi kusuntha kwa chithunzi, ndipo pali mzere wolekanitsa, womwe ndi wosavuta kuwona. Onetsani ukalamba ndi ma bifocal.