Kev lag luam keeb kwm yav dhau thiab nqe lus hais txog teeb meem
Nrog rau qhov kev xav tau ntau ntxiv rau qhov kev nthuav qhia pom tseeb hauv zaj duab xis thiab TV virtual ntau lawm (XR), cov kws tshaj lij studios, thiab cov kev ua yeeb yam loj -, LED cov duab tau maj mam hloov cov tshuaj ntsuab / xiav, dhau los ua tus neeg nqa khoom tseem ceeb rau kev tua keeb kwm yav dhau. Lawv "qhov koj pom yog qhov koj tau txais" tiag tiag- lub sijhawm sib xyaw kom zoo dua txo cov nqi xa tawm- cov nqi tsim khoom thiab txhim kho kev ua haujlwm tua.
Txawm li cas los xij, thaum siv cov cuab yeej siv yees duab los tua cov ntxaij vab tshaus LED, ob qho "tuag tsis zoo" feem ntau tshwm sim: moiré qauv thiab "scanning qauv." Cov yav tas los manifests raws li cov dej tsis sib xws ripple cuam tshuam, thaum lub tom kawg tshwm raws li kab rov tav dub kab txaij, ncaj qha ua rau cov duab zoo thiab txawm ua rau cov duab siv tsis tau. Cov no tau dhau los ua cov txheej txheem tseem ceeb hauv kev txwv tsis pub siv dav dav ntawm LED virtual tua.
Qhia meej txog qhov teeb meem tseem ceeb: Qhov kev sib txawv ntawm cov qauv moiré thiab cov qauv scanning
Hauv kev xyaum, ob qho yooj yim tsis meej pem, tab sis lawv yog qhov sib txawv ntawm cov yam ntxwv ntawm kev pom, tsim cov txheej txheem, thiab kev daws teeb meem. Cov ncauj lus kom ntxaws sib piv yog qhia hauv cov lus hauv qab no:
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Sib piv Dimensions |
Moiré qauv (dej ripple qauv) |
Scanning kab ( kab rov tav dub kab txaij) |
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Cov yam ntxwv pom |
Irregular arc/grid-zoo li diffusion, xim txawv nrog lub kaum sab xis shooting / tsis |
Tsau kab rov tav dub kab txaij, kab txaij sib txawv nrog tus nqi refresh, tsis muaj xim cuam tshuam. |
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Qhov tseem ceeb Mechanism |
Kev cuam tshuam tshwm sim ntawm ob lub sijhawm pixel arrays (LED screen pixels vs. camera sensor pixels) |
Synchronization sib txawv tshwm sim los ntawm mismatch ntawm lub koob yees duab shutter ceev thiab LED screen nce scan zaus |
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Core txhais |
1. Tsis txaus LED npo refresh npaum li cas; 2. Mismatch ntawm lub koob yees duab tsis (aperture, kwv nrug, focal ntev) thiab LED pixel ceev; 3. Lub kaum sab xis ntawm lub pixel arrays ntawm ob lub cuab yeej yog ze rau 0℃. |
1. LED npo refresh npaum li cas <1000Hz (progressive scan tsav); 2. Lub koob yees duab siv lub kaw lus nce qib. |
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Kev lag luam misconceptions |
"Nws tuaj yeem kho tau yooj yim los ntawm kev kho lub koob yees duab lub kaum ntse ntse" (Qhov tseeb, nws tsuas tuaj yeem txo cov tsos mob, tsis tshem tawm lawv). |
"Flickering yog qhov tsis pom ntawm tib neeg lub qhov muag, txhais tau tias tsis muaj cov qauv scanning" (lub koob yees duab kaw qhov ntsuas zaus thiab LED scanning zaus tsis synchronized, yog li qhov muag liab qab tsis tuaj yeem pom nws, tab sis lub koob yees duab tuaj yeem ntes nws). |
Targeted Solutions: Ib txoj hauv kev thev naus laus zis los ntawm "Relief" mus rau "Kho"
Moiré Pattern Solution: Dual -End Optimization, nrog Zaub Screen raws li cov tub ntxhais kawm
Cov cuab yeej tua phom: Parameter hloov kho (Kev ntsuas txo qis)
Lub hauv paus ntsiab lus: Los ntawm kev hloov pauv qhov kev sib raug zoo ntawm kev sib raug zoo ntawm lub koob yees duab thiab lub vijtsam LED, lub kaw lus nrhiav kev sib xyaw ua ke nrog kev cuam tshuam tsis muaj zog tshaj plaws, feem ntau los ntawm kev zam qhov resonance ntau ntawm ob pixel array frequencies / kaum. Cov txheej txheem kev ua haujlwm tshwj xeeb thiab cov txheej txheem thev naus laus zis yog raws li hauv qab no:
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Kho qhov ntsuas |
Cov lus qhia ua haujlwm |
Technical Logic |
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Aperture |
Ua ntej siv cov apertures loj (xws li F2.8-F4.0) thiab zam qhov apertures me (F8.0 thiab siab dua). |
Lub aperture loj ua rau qhov tob tob ntawm thaj tsam, qhov muag plooj ntawm cov npoo ntawm LED pixels ntawm lub koob yees duab sensor thiab txo qis kev cuam tshuam ib ntus; ib qho aperture me me ua rau qhov tob tob ntawm thaj teb, cov duab pixel ntse, thiab muaj kev cuam tshuam ntau ntxiv. |
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Qhov deb |
Kho qhov kev ncua deb ntawm lub koob yees duab thiab lub vijtsam LED (piv txwv li, nce ntawm 4m mus rau 6m) kom tsis txhob muaj qhov khoom ncua deb. |
Cov kev hloov pauv hauv cov khoom nyob deb hloov pauv "cov duab pixel suab" ntawm LED pixels ntawm lub sensor. Thaum lub suab tsis yog ntau qhov ntau ntawm cov sensor pixel suab, cuam tshuam tsis muaj zog. |
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Focal Length |
Tsis txhob siv lub koob yees duab telephoto (xws li 105mm), thiab ua ntej qhov dav -lub kaum sab xis rau qhov ntev focal ntev (24mm-50mm). |
Telephoto lo ntsiab muag amplify lub sij hawm ntawm LED pixel array, exacerbating cuam tshuam; wide- lub kaum sab xis muaj qhov dav ntawm qhov pom, txo qhov pixel ntom ntawm cov duab thiab ua rau muaj kev cuam tshuam tsis zoo. |
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Shooting lub kaum sab xis |
Ua kom lub kaum sab xis ntawm lub koob yees duab optical axis thiab LED npo qhov qub 5℃-15℃(tsis yog-perpendicular shooting). |
Los ntawm kev hloov lub kaum sab xis ntawm ob lub pixel arrays, lub xeev "parallel resonance" tawg, txo cov tiam ntawm kev cuam tshuam fringes nrog alternating lub teeb thiab tsaus. |
Cov kev txwv: Qhov kev daws teeb meem no tsuas yog "txo" cov qauv moiré thiab ua rau muaj ntau yam kev txwv ntawm kev tua- xws li tsis muaj peev xwm ntawm aperture loj kom tau raws qhov tob- ntawm - cov kev xav tau (cov neeg ua yeeb yam hauv pem hauv ntej thiab tom qab LED cov ntxaij vab tshaus yuav tsum tau ntes kom meej), thiab tsis yog - lub kaum sab xis perpendicular cuam tshuam kev sib raug zoo ntawm lub virtual scene. Nws muaj kev ua haujlwm tsawg hauv kev tua tiag tiag thiab tsis tuaj yeem siv los ua cov tshuaj radical.
Zaub Screen: Technological Innovation (Root Cause Solution)
Lub hauv paus ntsiab lus: Pib los ntawm lub hauv paus ntawm moiré qauv (lub sij hawm ncua sij hawm thiab refresh npaum li cas ntawm lub vijtsam LED nws tus kheej), tshem tawm "kev cuam tshuam qhov chaw" los ntawm kev nce tus nqi refresh thiab optimizing pixel qauv yog kev lag luam - paub daws teeb meem.
Cov txheej txheem tseem ceeb yog raws li nram no:
1. Ultra-siab refresh npaum li cas: LED npo refresh npaum li cas yuav tsum siab dua los yog sib npaug rau 7680Hz (kev lag luam lo lus "shooting-qib refresh rate"). Los ntawm kev ua kom lub teeb liab tso zis ntau zaus ntawm tus tsav tsheb IC, lub voj voog ntawm / tawm ntawm LED pixels tau nrawm dua li lub koob yees duab kaw lub voj voog, ua rau lub hauv paus tsis muaj zog rau kev cuam tshuam ib ntus.
2. Pixel density optimization: Siab- ntim ntim tshuab xws li MiniCOB (piv txwv li, pixel suab P1.2 thiab hauv qab) yog siv los txo cov LED pixel suab, ua rau "periodic zaus" ntawm pixel array deb ntawm pixel zaus ntawm lub koob yees duab sensor (piv txwv li, ib lub koob yees duab puv {7} x 6 pixels) zaus ntawm kwv yees li 200dpi), yog li zam resonance ntawm theem zaus.
3. Flicker-dawb tsav: "PWM (Pulse Width Modulation) flicker-free technology" yog siv los hloov cov "duty cycle drive," kom ntseeg tau tias cov khoom siv hluav taws xob tsis tu ncua thiab ruaj khov LED pixel ci ntsa iab thiab zam cov qauv moiré ntxiv vim qhov ci ntsa iab.
Scanning Texture Solution: Tsom rau ntawm "Refresh Rate + Shutter Synchronization"
Lub ntsiab lus ntawm cov kab scan yog "synchronization sib txawv ntawm lub koob yees duab kaw thiab LED nce qib scan". Qhov kev daws teeb meem yog ncaj qha, tsom mus rau "nce tus nqi refresh" thiab "optimizing synchronization mechanism".
Kev daws teeb meem tseem ceeb: nce tus nqi rov qab ntawm lub vijtsam LED
1. Thaum lub LED npo refresh npaum li cas yog ntau dua los yog sib npaug rau 1000Hz, lub "kab hloov lub sij hawm" ntawm cov kev vam meej scan yog shortened mus rau tsawg tshaj li 1ms. Lub koob yees duab qhov nrawm nrawm (xws li 1/50s lossis 1/60s) tsis tuaj yeem ntes qhov sib txawv ntawm cov kab, thiab cov kab scan ploj lawm.
2. Rau kev tshaj tawm - qib koob yees duab, nws raug pom zoo tias LED screen refresh npaum li cas ntau dua lossis sib npaug rau 7680Hz, uas tuaj yeem phim lub koob yees duab "lub ntiaj teb kaw" hom, tshem tawm tag nrho cov kab scan thiab flicker..
Kev Pabcuam Technology: Shutter-Refresh Synchronization
Qee qhov siab - kawg LED tswj tshuab (xws li Bangteng) txhawb "lub koob yees duab kaw lub teeb liab tawm tswv yim". Los ntawm kev kho qhov ntsuas zaus ntawm lub vijtsam LED hauv lub sijhawm tiag tiag los synchronize nrog lub koob yees duab shutter ceev (xws li teeb tsa LED refresh tus nqi mus rau qhov sib npaug ntawm 500Hz thaum lub shutter ceev yog 1/50s), scanning qauv yog ntxiv zam. Qhov no yog qhov tsim nyog rau cov xwm txheej zoo tshaj plaws virtual tua (xws li lub koob yees duab nrawm zoom-hauv thiab zoom- tawm, thiab loj- teev cov neeg ua yeeb yam txav).
