Ngā momo okarāhe ahumahiwhakairi

E whā ngā momo atanga matua, arā, ko te Maunga-F, ko te Maunga-C, ko te Maunga-CS me te Maunga-M12. He atanga whānui te Maunga-F, ā, he pai mō ngā karāhe he roa ake te arotahi i te 25mm. Mēnā he iti iho te roa o te arotahi o te karāhe arotahi i te 25mm, nā te iti o te karāhe arotahi, ka whakamahia te Maunga-C, te Maunga-CS rānei, ā, ko ētahi ka whakamahi i te atanga M12.

Te rerekētanga i waenga i te maunga C me te maunga CS

Ko te rerekētanga i waenga i ngā atanga C me CS ko te tawhiti mai i te mata pa o te arotahi me te kāmera ki te papa arotahi o te arotahi (te tūranga e tika ana kia noho te pūoko hiko CCD o te kāmera). Ko te tawhiti mō te atanga C-mount he 17.53mm.

Ka taea te tāpiri i tētahi mowhiti urutau C/CS 5mm ki tētahi arotahi mau-CS, kia taea ai te whakamahi me ngā kāmera momo-C.

Te rerekētanga i waenga i te maunga C me te maunga CS

Ngā tawhā taketake o ngā arotahi ahumahi

Te mara tirohanga (FOV):

Ko te FOV e pā ana ki te whānuitanga e kitea ana o te mea e tirohia ana, arā, te wāhanga o te mea i hopukina e te pūoko o te kāmera. (Ko te whānuitanga o te tirohanga he mea me mārama i roto i te kōwhiringa)

Te tirohanga whānui

Tawhiti Mahi (WD):

E pā ana ki te tawhiti mai i te taha mua o te arotahi ki te mea e whakamatautauria ana. Arā, ko te tawhiti mata mō te whakaahua mārama.

Whakataunga:

Ko te rahi o te āhuatanga iti rawa e taea te wehewehe i runga i te mea i tirotirohia ka taea te ine e te pūnaha whakaahua. I te nuinga o te wā, ko te iti o te tirohanga, ko te pai ake o te taumira.

Te hohonutanga o te tirohanga (DOF):

Ko te kaha o te arotahi ki te pupuri i te taumira e hiahiatia ana ina tata atu, ina matara atu rānei ngā mea i te arotahi pai rawa atu.

Te hohonu o te tirohanga

Ētahi atu tawhā ongā karaihe ā-ahumahi

Rahi maramara whakaahua-ārai:

Ko te rahi o te horahanga whai hua o te maramara pūoko kāmera, e pā ana ki te rahi whakapae. He mea tino nui tēnei tawhā hei whakatau i te tauine tika o te arotahi kia whiwhi ai i te tirohanga whānui e hiahiatia ana. Ko te ōwehenga whakanui tuatahi o te arotahi (PMAG) ka tautuhia e te ōwehenga o te rahi o te maramara pūoko ki te tirohanga whānui. Ahakoa kei roto i ngā tawhā taketake te rahi me te tirohanga whānui o te maramara whakaahua-tairongo, ehara te PMAG i te tawhā taketake.

Rahi maramara whakaahua-ātete

Roanga arotahi (f):

"Ko te roa arotahi he ine i te kukū, te rerekētanga rānei o te mārama i roto i tētahi pūnaha whatu, e pā ana ki te tawhiti mai i te pokapū whatu o te arotahi ki te arotahi o te kohikohinga mārama. Ko te tawhiti hoki mai i te pokapū o te arotahi ki te papa whakaahua pērā i te kiriata, te CCD rānei i roto i te kāmera. f={tawhiti mahi/mara tirohanga taha roa (taha poto rānei)}XCCD taha roa (taha poto rānei)

Te awe o te roa arotahi: ko te iti o te roa arotahi, ko te nui ake o te hōhonutanga o te mara; ko te iti o te roa arotahi, ko te nui ake o te hē; ko te iti o te roa arotahi, ko te kino ake o te āhuatanga vignetting, ka whakaiti i te māramatanga i te taha o te aberration.

Whakataunga:

E tohu ana i te tawhiti iti rawa i waenga i ngā pūwāhi e 2 ka kitea e tētahi huinga karāhe arotahi

0.61x te roangaru i whakamahia (λ) / NA = taumira (μ)

Ka taea e te tikanga tatau i runga ake nei te tatau i te taumira, engari kāore e whakauru i te whakapōturitanga.

※Ko te roanga ngaru e whakamahia ana ko te 550nm

Whakamāramatanga:

Ka kitea te maha o ngā rārangi pango me te mā i waenganui i te 1mm. Unit (lp)/mm.

MTF (Mahi Whakawhiti Whakarerekētanga)

MTF

Whakapōturi:

Ko tētahi o ngā tohu hei ine i te mahi a te arotahi ko te aberration. E pā ana ki te rārangi tika i waho o te tuaka matua i te papa o te kaupapa, ka huri hei kōpiko i muri i te whakaahuahia e te pūnaha whatu. Ko te hapa whakaahua o tēnei pūnaha whatu ka kiia ko te distortion. Ko ngā distortion aberrations ka pā ki te āhua o te ahua anake, ehara i te koi o te ahua.

Pūwhera me te Tau-F:

He taputapu te rau lenticular e whakamahia ana hei whakahaere i te nui o te mārama e whiti ana i roto i te arotahi, i roto i te arotahi. Ka whakamahia e mātou te uara F hei whakaatu i te rahi o te whakatuwheratanga, pērā i te f1.4, F2.0, F2.8, me ētahi atu.

Pūwero me te Tau-F

Whakanui whatu:

Ko te tātai i whakamahia hei tatau i te ōwehenga tauine matua koia tēnei: ​​PMAG = rahi o te pūoko (mm) / mara tirohanga (mm)

Whakaatu whakanui

E whakamahia whānuitia ana te whakanui whakaaturanga i roto i te karuārai. Ko te whakanui whakaaturanga o te mea i inehia e whakawhirinaki ana ki ngā āhuatanga e toru: te whakanui whatu o te arotahi, te rahi o te maramara pūoko o te kāmera ahumahi (te rahi o te mata ūnga), me te rahi o te whakaaturanga.

Whakanui whakaaturanga = whakanui whatu arotahi × rahi whakaaturanga × 25.4 / rahi whakarara rake

Ngā kāwai matua o ngā karaihe ā-ahumahi

Whakarōpūtanga

•Mā te roa o te arotahi: te matua me te whakanui

•Mā te whakatuwheratanga: te whakatuwheratanga pumau me te whakatuwheratanga rerekē

•Mā te atanga: atanga C, atanga CS, atanga F, me ētahi atu.

•Wehewehea mā te maha: karāhe whakanui pumau, karāhe whakanui tonu

•Ko ngā karāhe arotahi tino nui e whakamahia whānuitia ana i roto i te umanga tirohanga mīhini ko ngā karāhe arotahi FA, ngā karāhe arotahi-nui me ngā karu hiko ahumahi, me ētahi atu.

Ngā āhuatanga matua me whai whakaaro ki te whiriwhiri i tētahiarotahi tirohanga mīhini:

1. Te whānuitanga tirohanga, te whakanui whatu me te tawhiti mahi e hiahiatia ana: I te wā e whiriwhiri ana i tētahi arotahi, ka whiriwhiria e mātou he arotahi he nui ake te whānuitanga tirohanga i te mea e inehia ana, kia māmā ake ai te whakahaere i te nekehanga.

2. Ngā whakaritenga mō te hōhonutanga o te mara: Mō ngā kaupapa e hiahia ana ki te hōhonutanga o te mara, whakamahia he kōhao iti i te mea ka taea; i te wā e whiriwhiri ana i tētahi karāhe me te whakanui, whiriwhiria he karāhe me te iti o te whakanui e taea ana e te kaupapa. Mena he nui ake ngā whakaritenga mō te kaupapa, ka whiriwhiria e au he karāhe matatau me te hōhonutanga o te mara.

3. Rahi o te pūoko me te atanga kāmera: Hei tauira, ka tautokona e te arotahi 2/3″ te mata rake kāmera ahumahi nui rawa atu ko te 2/3″, kāore e taea te tautoko i ngā kāmera ahumahi nui atu i te 1 inihi.

4. Wāhi e wātea ana: Kāore e taea e ngā kaihoko te whakarerekē i te rahi o ngā taputapu ina he mea whiriwhiri te kaupapa.