IC697CPM924RR

所需的視場(chǎng)與鏡頭的焦距有一個(gè)簡(jiǎn)單的關(guān)系。利用這個(gè)關(guān)系可選擇適當(dāng)?shù)溺R頭。

估計(jì)或?qū)崪y(cè)視場(chǎng)的最大寬度；估計(jì)或?qū)崪y(cè)量攝像機(jī)與被攝景物間的距離；使用1／3”鏡頭時(shí)使用圖2，使用1／2鏡頭時(shí)使用圖3，使用2／3”鏡頭時(shí)使用圖4，使用1鏡頭時(shí)使用圖5。具體方法：在以W和L為座標(biāo)軸的圖示2—5中，查出應(yīng)選用的鏡頭焦距。為確保景物完全包含在視場(chǎng)之中，應(yīng)選用座標(biāo)交點(diǎn)上，面那條線指示的數(shù)值。例如：

視場(chǎng)寬50m,距離40m,使用1／3”格式的鏡頭，在座標(biāo)圖中的交點(diǎn)比代表4mm鏡頭的線偏上一點(diǎn)。這表明如果使用4mm鏡頭就不能覆蓋50m的視場(chǎng)。而用2．8mm的鏡頭則可以完全覆蓋視場(chǎng)。

f=vD／V或f=hD／H

【公　司】： 廈門泰尼電氣有限公司
【主　營(yíng)】： AB、GE、施耐德等各類PLC產(chǎn)品
【價(jià)　格】： 電議
【發(fā)布人】： 張亮
【電  話】： 18030028083
【所在地】： 福建 - 廈門
【座　機(jī)】： 0592-6809819
【來(lái)　源】： 供應(yīng)信息 > 電工、電氣 > PLC
【Q　  Q】： 2314094943

其中，f代表焦距，v代表CCD靶面垂直高度，V代表被觀測(cè)物體高度，h代表CCD靶面水平寬度，H代表被觀測(cè)物體寬度。

舉例：假設(shè)用1／2”CCD攝像頭觀測(cè)，被測(cè)物體寬440毫米，高330毫米，鏡頭焦點(diǎn)距物體2500毫米。

由公式可以算出：

焦距f=6．4X2500／440c 36毫米或

焦距f=4．8X2500／330c 36毫米FT12JRS - FOXBORO
E69FT13JRS - FOXBORO
E69R-I2 - FOXBORO
E69RI2 - FOXBORO
E93B - FOXBORO
E96PHA - FOXBORO
E96PIA - FOXBORO
E96PIAB - FOXBORO
E96PIABE - FOXBORO
E96PIAK - FOXBORO
E96R-HA - FOXBORO
E96RHA - FOXBORO
E96S - FOXBORO
E96S-IA-C-CS-E/XN-F - FOXBORO
E96SIA - FOXBORO
E96SIACCSEXNF - FOXBORO
ECA60Z - FOXBORO
ECA60ZKITA - FOXBORO
EH4-D - FOXBORO
EH4D - FOXBORO
EP402A2B2T1 - FOXBORO
F0100SW - FOXBORO
F0101AF - FOXBORO
F0105TL - FOXBORO
F221/331GA - FOXBORO
F221331GA - FOXBORO
F7863A-BE - FOXBORO
F7863ABE - FOXBORO
FBP10 - FOXBORO
FWSKBA3E - FOXBORO
FWSKBB1 - FOXBORO
FX-130F-N4 - FOXBORO
FX-135TG - FOXBORO
FX130FN4 - FOXBORO
FX135TG - FOXBORO
G0108JV - FOXBORO
G0113CV - FOXBORO
G0113ES - FOXBORO
G0113HK - FOXBORO
G0113HX - FOXBORO
G0114FL - FOXBORO
H0103AY - FOXBORO
H0103AY - FOXBORO
HCU1492AO-CC - FOXBORO
HCU1492AOCC - FOXBORO
HCU149SAI-CC - FOXBORO
HCU149SAICC - FOXBORO
IAP10-D22C1F-M1 - FOXBORO
IAP10-D22C1F-M1 - FOXBORO
IAP10D22C1FM1 - FOXBORO
IAP10D22C1FM1 - FOXBORO
IAP20T22B01FM2L1 - FOXBORO
IAP20T22B01FM2L1 - FOXBORO
IDP10-TF1B01F-S0R4L1 - FOXBORO
IDP10-TS3B01F-S01-FAR4M1L1 - FOXBORO
IDP10A22B21FM1 - FOXBORO
IDP10AF1C01F - FOXBORO
IDP10D22B21FM1L1 - FOXBORO
IDP10DS1B01F - FOXBORO
IDP10T22C21EM2L1 - FOXBORO
IDP10TF1B01FS0R4 - FOXBORO
IDP10TS3B01FS01F - FOXBORO
IGP10-120D1F - FOXBORO
IGP10-120D1F - FOXBORO
IGP10-T22B21F-M1L1 - FOXBORO
IGP10-T22B21F-M1L1 - FOXBORO
IGP10-T22D1F-M1L1 - FOXBORO
IGP10-T22D1F-M1L1 - FOXBORO
IGP10120D1F - FOXBORO
IGP10120D1F - FOXBORO
IGP10A20D1FM1 - FOXBORO
IGP10A20D1FM1 - FOXBORO
IGP10A22D1FM1 - FOXBORO
IGP10A22D1FM1 - FOXBORO
IGP10A22E1F - FOXBORO
IGP10A22E1F - FOXBORO
IGP10T22B21FM1L1 - FOXBORO
IGP10T22B21FM1L1 - FOXBORO
IGP10T22D1FL1V2 - FOXBORO
IGP10T22D1FL1V2 - FOXBORO
IGP10T22D1FM1L1 - FOXBORO
IGP10T22D1FM1L1 - FOXBORO
IGP20-D34D21F-M2L1 - FOXBORO
IGP20-D34D21F-M2L1 - FOXBORO
IGP20A22D21FM1 - FOXBORO
IGP20A22D21FM1 - FOXBORO
IGP20A22E21FM1 - FOXBORO
IGP20A22E21FM1 - FOXBORO
IGP20D34D21FM2L1 - FOXBORO
IGP20D34D21FM2L1 - FOXBORO
IMT20-PA13FGZ - FOXBORO
IMT20-PA23FGZ - FOXBORO
IMT20-SA10FNS-G - FOXBORO
IMT20PA10FGZ - FOXBORO
IMT20PA13FGZ - FOXBORO
IMT20PA23FGZ - FOXBORO
IMT20SA10FNSG - FOXBORO
IMT25-PEATB20N-A - FOXBORO
IMT25IEATB10NAB - FOXBORO
IMT25PDADB10ZG - FOXBORO
IMT25PEATB10NAB - FOXBORO
IMT25PEATB20NA - FOXBORO
K0118BE - FOXBORO
K0118BP - FOXBORO
K0143AA - FOXBORO
K0144SZ - FOXBORO
K014BD-C - FOXBORO
K014BDC - FOXBORO
K0200YF - FOXBORO
KG4NLRH20MN22S - FOXBORO
KIT-C-E27-A-C - FOXBORO
KITCE27AC - FOXBORO
KO143AA - FOXBORO
KO143AK-E - FOXBORO
KO143AKE - FOXBORO
L0100BW - FOXBORO
L0111KZ - FOXBORO
L0111UT - FOXBORO
L0112PX - FOXBORO
L0113CP - FOXBORO
L0113VH - FOXBORO
L0114AG - FOXBORO
L0117AG - FOXBORO
L0117AN - FOXBORO
L0117BS - FOXBORO
L0118RA - FOXBORO
L0118UG - FOXBORO
L0118UJ - FOXBORO
L0119NP - FOXBORO
L0119SH - FOXBORO
L0119TR - FOXBORO
L0119VD - FOXBORO
L0120LA - FOXBORO
L0121CJ - FOXBORO
L0122AR - FOXBORO
L0122JU - FOXBORO
L0122JW - FOXBORO
L0122JY - FOXBORO
L0122RJ-B - FOXBORO
L0122RJB - FOXBORO
L0122TU-A - FOXBORO
L0122TUA - FOXBORO
L0123AL - FOXBORO
L0123CK - FOXBORO
M0122AC - FOXBORO
M0132PN - FOXBORO
M0152KE - FOXBORO
M0153YB - FOXBORO
M0154TR - FOXBORO