Dip bilong fil bilong endoskop kamera sistem

Introdaksen bilong medikel endoskop optikal sistem

Nau yet, ol medikel endoskop i gat tripela kain: ol 'fiber electronic endoscope', ol 'rigid endoscope' na ol 'capsule endoscope'. Hard endoscope i save mekim bikpela wok long planti medikel eksam, painimaut sik na tritmen bikos em i gat gutpela piksa bilong en, em i no gat bikpela pe na em i gat bikpela resolusen bilong piksa.

Hard endoscope minimally invasive surgery em long putim wanpela hatpela endoscope insait long bodi bilong man (olsem hul bilong bel), yusim wanpela kol lait sos long lait i go insait long optical fiber, na salim piksa i go long dijitel kamera long rot bilong optical sistem, we i save kamap long hai-definisen displei long ril taim. Bihain dokta i skelim, skelim na operetim sik bilong sikman bihainim piksa bilong 'tissue organ' we i stap long displei.

Optikal sistem bilong medikel rigid endoskop i gat 4-pela hap: strongpela endoskop, kaupling lens, spliting prism na CMOS piksa sensa. Ol i ken brukim strongpela 'endoscope' i go long 'objective lens', 'relay system' na 'eyepiece'.

Objektif lens bilong medikel rigid endoskop i gat ol mak bilong sotpela 'focal length', bikpela 'field of view' na longpela 'optical length'. Olsem na, ol i save wokim dispela 'optical system' wantaim wanpela 'inverse telephoto objective lens structure'. Ol i yusim 'negative power lens group' olsem fran grup, na 'positive power lens group' em i 'rear group'. Taim 'parallel beam' i kamap, em i save go aut long fran grup na bihain em i kamap olsem wanpela piksa long 'focal plane'. Ol i rausim bikpela hap bilong dispela 'optical system' long 'objective lens' i go long baksait, na dispela i mekim na ol i kisim wanpela 'working distance' we i longpela moa long 'focal length'. Na tu, bihain long 'off-axis beam wantaim bikpela 'field angle' i go insait long 'negative power lens group', 'divergence angle' we i go insait long 'positive power lens group' i kamap liklik, na bai ol i ken winim mak bilong 'wide angle'.

Long go insait long bodi bilong man na lukim ol sua, ol i mas wokim 'medical rigid endoscope' wantaim wanpela kain longpela, olsem 'laparoscope', we i save longpela inap 30 sentimita. Dispela i nidim olsem antap long 'imaging objective lens', 'rigid endoscope' i nidim tu wanpela 'rod mirror' long mekim wok olsem wanpela 'relay image transmission system', wantaim wanpela 'magnification' bilong - 1. Yusim bilong ol 'odd group' inap long mekim sistem i kamap gutpela.
Wok bilong 'endoscope eyepiece' em long givim piksa we 'objective lens' na 'relay system' i wokim i go insait long 'eyepiece' na i go insait long ai bilong man long rot bilong 'parallel light'.

Nau, ol i putim 'adaptive lens' long 'visual endoscope', olsem na lait bilong aipis i ken go aut long CMOS mak long rot bilong 'adapter lens'. 'Exit pupil' bilong 'eyepiece' em i 'entrans pupil' bilong 'adapter'
Long pinisim, long sait bilong olgeta disain, as bilong 'endoscope' insait long olgeta 'optical system' em yumi ken skelim wantaim wanpela 'photographic objective'. Long lukluk long 'depth of field evaluation' insait long 'camera lens', 'depth of field' bilong 'endoscope imaging system' i lukluk long 'endoscope' yet, na i no long 'lens'.