Nā kānana hoʻopaʻa haʻahaʻa hoʻoheheʻe / noʻonoʻo

Hōʻike ʻo Optical density (OD) i ke kumu attenuation i hāʻawi ʻia e kahi kānana optical, ʻo ia hoʻi ka nui o ka hoʻemi ʻana i ka mana ʻikea o kahi kukuna hanana.Pili ka OD i ka lawe ʻana.ʻO ke koho ʻana i kahi kānana ND me kahi kiʻekiʻe optical density e unuhi i ka haʻahaʻa haʻahaʻa a me ka hoʻonui ʻana o ka mālamalama hanana.No ka hoʻouna kiʻekiʻe a me ka liʻiliʻi o ka absorption, kūpono ka haʻahaʻa optical haʻahaʻa.E like me ka laʻana, inā loaʻa kahi kānana me kahi OD o 2 i ka waiwai hoʻoili o 0.01, ʻo ia ke ʻano o ka kānana e hoʻemi i ke kukui i 1% o ka mana hanana.ʻElua mau ʻano o ka ND filiters: absorptive neutral density filters, reflective neutral density filters.

Loaʻa kā mākou kānana absorptive neutral density (ND) i nā nui like ʻole me ka optical densities (OD) mai ka 0.1 a i ka 8.0.ʻAʻole like me kā lākou mea hoʻohālikelike, nā mea hao, ua hana ʻia kēlā me kēia kānana ND mai kahi substrate o ke aniani Schott i koho ʻia no kāna ʻāpana hoʻoheheʻe spectrally flat ma ka ʻāina ʻike ʻia mai 400 nm a 650 nm.

Loaʻa nā kānana hoʻohaʻahaʻa kūʻokoʻa me ka N-BK7 (CDGM H-K9L), UV Fused Silica (JGS 1), a i ʻole Zinc Selenide substrate ma nā pae spectral like ʻole.N-BK7 (CDGM H-K9L) nā kānana i loko o ka N-BK7 aniani substrate me ka metala (Inconel) uhi waihoia ma kekahi aoao, Inconel mea he mea hao hao e hōʻoiaʻiʻo flat spectral pane mai ka UV i ka kokoke IR;ʻO nā kānana silica fused UV he substrate UVFS me ka uhi nickel i waiho ʻia ma kekahi ʻaoʻao, e hāʻawi ana i kahi pane spectral pālahalaha;ʻO nā kānana mānoanoa kūʻokoʻa ʻo ZnSe kahi substrate ZnSe (nā mānoanoa optical mai ka 0.3 a i ka 3.0) me ka uhi nickel ma kekahi ʻaoʻao, e alakaʻi ana i kahi pane kikoʻī pālahalaha ma luna o 2 a 16 µm ka lōʻihi hawewe, e ʻoluʻolu e ʻike i ka pakuhi aʻe no kāu mau kuhikuhi.

Nā hiʻohiʻona:

Nā mānoanoa Optical:

Hoʻomau a i ʻole ʻanuʻu ND

Nā Koho Absorptive a me Reflective:

Loaʻa nā ʻano kānana ʻelua o ND (Neutral Density).

Nā koho ʻano:

Poe a i ʻole ʻAha

Nā koho koho:

ʻAʻole i kau ʻia a i kau ʻia i loaʻa

Nā kikoʻī maʻamau:

Nā ʻāpana

Nā pae a me nā hoʻomanawanui

Mea Papahana

Absorptive: Schott (Absorptive) Glass / Reflective: CDGM H-K9L a i ʻole nā mea ʻē aʻe
ʻAno

kānana hoʻopaʻa haʻahaʻa / hoʻomaʻamaʻa
Ka hoʻomanawanui ʻana

+0.0/-0.2mm
mānoanoa

± 0.2 mm
Palahalaha

< 2λ @ 632.8 nm
Hoʻolikelike

< 5 arcmin
Chamfer

Palekana< 0.5 mm x 45°
OD Hoomanawanui

OD ± 10% @ ka lōʻihi nalu
ʻAno ʻili (ʻeli ʻuʻuku)

80 - 50
Mākaʻikaʻi Aperture

> 90%
Ka uhi ʻana

Absorptive: AR i uhi ʻia / Reflective: Metallic reflective coating