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<h1>鱼眼镜头åQšè®²è§£å·¥ä¸šé•œå¤´çš„分类选型æ–ÒŽ³•</h1> <p>来源åQšhttp://www.whairstyle.com/news933803.html â”?发表旉™—´åQ?023/4/14 9:07:00 </p> </div> <div><p><br></p><p>      东莞鱼眼<a href="http://www.whairstyle.com" target="_blank"><strong>镜头</strong></a>讲述工业镜头的作用是光学成像。工业镜头是机器视觉¾pȝ»Ÿä¸­çš„重要¾l„成部分åQŒå¯¹æˆåƒè´¨é‡èµïL€å…³é”®ä½œç”¨ã€‚它å¯ÒŽˆåƒè´¨é‡çš„几个Z主要指标有媄响,包括åQšåˆ†è¾¨çŽ‡ã€å¯¹æ¯”度、景深和各种像差。工业镜头不仅种¾cȝ¹å¤šï¼Œè€Œä¸”质量差异很大。然而,一般用户在设计机器视觉¾pȝ»Ÿæ—Óž¼Œå¾€å¾€å¯¹å·¥ä¸šé•œå¤´ä¸å¤Ÿé‡è§†ï¼Œå¯ÆD‡´æ— æ³•èŽ·å¾—理想的图像,甚至å¯ÆD‡´¾pȝ»Ÿå¼€å‘失败ã€?a href="http://www.whairstyle.com" target="_blank"><strong>鱼眼镜头</strong></a>厂家描述了以下分¾c»ï¼Œé€‰æ‹©æ–ÒŽ³•åQ?/p><p>  一、工业镜头的分类:</p><p>  1、根据有效像场的大小分类åQ?/p><p>  可分为电视摄像镜å¤ß_¼›ç”µåª„摄像镜头åQŒç…§ç›¸æœºé•œå¤´ã€‚而其中电视摄像镜头又åˆ?/4英寸,1/3英寸,1/2英寸,2/3英寸,1英寸½{‰ã€?/p><p>  2、根据焦距分¾c»ï¼š</p><p>  æ ÒŽ®ç„¦è·èƒ½å¦è°ƒèŠ‚åQŒå¯åˆ†äؓ定焦距工业镜头和变焦距工业镜头两大类。定焦距工业镜头又可分äؓ<a href="/product183986.html" target="_blank"><strong>鱼眼镜头</strong></a>、短焦镜头、标准镜头、长焦镜头四大类。变焦距镜头又可分手动变焦电动变焦ã€?/p><p>  3、根据工业镜头接口类型划分:</p><p>  工业镜头和工业相æœÞZ¹‹é—´çš„接口有许多不同的¾cÕdž‹åQŒå·¥ä¸šç›¸æœºå¸¸ç”¨çš„包括C接口、CS接口、F接口、V接口、T2接口、徕卡接口、M42接口、M50接口½{‰ã€‚接口类型的不同和工业镜头性能及质量åƈ无直接关¾p»ï¼Œåªæ˜¯æŽ¥å£æ–¹å¼çš„不同,一般可以也扑ֈ°å„种常用接口之间的è{接口ã€?/p><p>  C接口和CS接口是工业工业相机Z常见的国际标准接口,ä¸?英寸åQ?2UN英制螺纹˜qžæŽ¥å£ï¼ŒC型接口和CS型接口的螺纹˜qžæŽ¥æ˜¯ä¸€æ ïLš„åQŒåŒºåˆ«åœ¨äºŽC型接口的后截距äؓ17.5mmåQŒCS型接口的后截距äؓ12.5mm。所以CS型接口的工业相机可以和C口及CS口的镜头˜qžæŽ¥ä½¿ç”¨åQŒåªæ˜¯ä‹É用C口镜头时需要加一ä¸?mm的接圈;C型接口的工业相机不能用CS口的镜头ã€?/p><p>  F接口镜头是尼康镜头的接口标准åQŒæ‰€ä»¥åˆ¿U°å°¼åº·å£åQŒä¹Ÿæ˜¯å·¥ä¸šå·¥ä¸šç›¸æœÞZ¸­å¸¸ç”¨çš„类型,一般工业相机靶面大äº?英寸旉™œ€ç”¨F口的镜头ã€?/p><p>  V接口镜头是著名的专业镜头品牌施奈德镜头所主要使用的标准,一般也用于工业相机靉™¢è¾ƒå¤§æˆ–特ŒDŠç”¨é€”的镜头ã€?/p><p>       å…¶ä»–ç‰ÒŽ®Šç”¨é€”的镜头åQ?/p><p>  昑־®é•œå¤´åQˆMicroåQ‰ï¼Œä¸€èˆ¬æ˜¯æŒ‡æˆåƒæ¯”例大äº?0:1的拍摄系¾lŸæ‰€ç”¨ï¼Œä½†ç”±äºŽçŽ°åœ¨çš„工业相机的像素尺寸已¾låšåˆ?微米以内åQŒæ‰€ä»¥ä¸€èˆ¬æˆåƒæ¯”例大äº?:1时也会选用昑־®é•œå¤´ã€?/p><p>  微距镜头åQˆMacroåQ‰ï¼Œä¸€èˆ¬æ˜¯æŒ‡æˆåƒæ¯”例äؓ2:1ï½?:4的范围内的特ŒDŠè®¾è®¡çš„镜头。在对图像质量要求不是很高的情况下,一般可采用在镜头和工业相机之间加近摄接圈的方式或在镜头前加˜q‘拍镜的方式辑ֈ°æ”‘Ö¤§æˆåƒçš„效果ã€?/p><p>  ˜qœå¿ƒé•œå¤´åQˆTelecentricåQ‰ï¼Œä¸»è¦æ˜¯äؓ¾U æ­£ä¼ ç»Ÿé•œå¤´çš„视差而特ŒDŠè®¾è®¡çš„镜头åQŒå®ƒå¯ä»¥åœ¨ä¸€å®šçš„物距范围内,使得到的囑փæ”‘Ö¤§å€çŽ‡ä¸ä¼šéšç‰©è·çš„变化而变化,˜q™å¯¹è¢«æµ‹ç‰©ä¸åœ¨åŒä¸€ç‰©é¢ä¸Šçš„情况是非帔R‡è¦çš„应用ã€?/p><p>  紫外镜头åQˆUltravioletåQ‰å’Œ¾U¢å¤–镜头åQˆInfraredåQ‰ï¼Œä¸€èˆ¬é•œå¤´æ˜¯é’ˆå¯¹å¯è§å…‰èŒƒå›´å†…çš„ä‹É用设计的åQŒç”±äºŽåŒä¸€å…‰å­¦¾pȝ»Ÿå¯¹ä¸åŒæ‡L长的光线折射率的不同åQŒå¯¼è‡´åŒä¸€ç‚¹å‘出的不同波长的光成像时不能会聚成一点,产生色差。常用镜头的消色差设计也是针对可见光范围的,紫外镜头和红外镜头即是专门针对ç‚÷外线和红外线˜q›è¡Œè®¾è®¡çš„镜头ã€?/p><p>  二、工业镜头的选型åQ?/p><p>  镜头按光圈分为手动光圈镜头和自动光圈镜头åQŒé€‰æ‹©ä¾æ®ä¸»è¦æ ÒŽ®çŽ¯å¢ƒçš„å…‰¾U¿æ˜¯å¦ç¨³å®šï¼ŒçŽ¯å¢ƒ½E›_®šçš„一般选用手动光圈åQŒä¸€‹Æ¡è°ƒè¯•OK后即å?反之选用自动光圈镜头(必须配以带有自动光圈镜头插åñ”的工业相æœ?åQŒè¿™æ ·ä¾¿å¯ä»¥å®žçŽ°ç”»é¢äº®åº¦çš„自动调节。对于自动光圈镜头的控制信号又可分äؓDC及VIDEO控制两种åQŒå³ç›´æµç”µåŽ‹æŽ§åˆ¶åŠè§†é¢‘ä¿¡åähŽ§åˆ¶ã€‚这在自动光圈镜头的¾cÕdž‹é€‰ç”¨ä¸Šï¼Œå·¥ä¸šç›¸æœºè‡ªåŠ¨å…‰åœˆé•œå¤´æ’åñ”的连接方式上åQŒä»¥åŠé€‰æ‹©è‡ªåŠ¨å…‰åœˆé•œå¤´çš„驱动方式开关上åQŒä¸‰è€…注意协调配合好卛_¯ã€?/p><p>  在镜头规æ ?镜头规格一般分ä¸?/3‟ë€?/2‛_’Œ2/3″等½{?一定的情况下,镜头焦距与镜头视åœø™§’çš„å…³¾pÖMؓåQšé•œå¤´ç„¦è·è¶Šé•¿ï¼Œå…‰™•œå¤´çš„视场角就­‘Šå°åQ›åœ¨é•œå¤´ç„¦è·ä¸€å®šçš„情况下,镜头规格与镜头视åœø™§’çš„å…³¾pÖMؓåQšé•œå¤´è§„æ ÆD¶Šå¤§ï¼Œå…‰™•œå¤´çš„视场角也­‘Šå¤§ã€‚在镜头物距一定的情况下,随着镜头焦距的变大,画面范围ž®Þp¶Šž®ï¼Œä½†ç”»é¢ç»†èŠ‚越来越清晰åQ›è€Œéšç€é•œå¤´è§„格的增大,画面范围ž®±å¢žå¤?但其画面¾l†èŠ‚­‘Šæ¥­‘Šæ¨¡¾pŠã€?/p><p>  定焦距:焦距固定不变åQŒå¯åˆ†äؓ有光圈和无光圈两¿Uã€‚有光圈åQšé•œå¤´å…‰åœˆçš„大小可以调节。根据环境光照的变化åQŒåº”相应调节光圈的大ž®ã€‚无光圈åQšå³å®šå…‰åœˆï¼Œå…‰™€šå…‰é‡æ˜¯å›ºå®šä¸å˜çš„。主要用于光源恒定或工业相机自带电子快门的情å†üc€‚变焦距åQšç„¦è·å¯ä»¥æ ¹æ®éœ€è¦è¿›è¡Œè°ƒæ•ß_¼Œä½¿è¢«æ‘„物体的囑փæ”‘Ö¤§æˆ–羃ž®ã€‚常用的变焦镜头为六倍、十倍变焦。三可变镜头åQšå¯è°ƒç„¦è·ã€è°ƒèšç„¦ã€è°ƒå…‰åœˆã€‚二可变镜头åQšå¯è°ƒç„¦è·ã€è°ƒèšç„¦ã€è‡ªåŠ¨å…‰åœˆã€‚在镜头规格及镜头焦距一定的前提下,CS型接口镜头的视场角将大于C型接口镜头的视场角ã€?/p><p>  在焦距能够固定的时候选用定焦镜头åQŒè¯¥é•œå¤´ä¸Šåªæœ‰ä¸€ä¸ªå¯æ‰‹åŠ¨è°ƒæ•´çš„对焦调整环åQˆçŽ¯ä¸Šæ ‡æœ‰è‹¥òq²è·¼›Õd‚考å€û|¼‰åQŒå·¦åÏx—‹è½¬è¯¥çŽ¯å¯ä½¿æˆåœ¨CCD靉™¢ä¸Šçš„像Z为清晎ͼŒæ­¤æ—¶åœ¨ç›‘视器屏幕上得到图像也Z为清晰。手动变焦镜头一般用在要求较ä¸ÞZ¸¥æ ÆD€Œç”¨å®šç„¦é•œå¤´åˆä¸æ˜“满­‘Œ™¦æ±‚的场合åQŒå˜ç„¦é•œå¤´ä¸€èˆ¬åº”æ ÒŽ®å·¥ä¸šç›¸æœºçš„规æ ég¸€è‡ß_¼Œæˆ–者镜头规格大于摄像头规格åQŒæ‰€æœ‰çš„摄象机镜头均是螺¾U¹å£çš„,åQ£ïÛEåQ¤æ‘„象机的镜头安装有两种工业标准åQŒå³åQ£å®‰è£…åñ”å’ŒïÛEåQ›_®‰è£…åñ”。两者螺¾Ušwƒ¨åˆ†ç›¸åŒï¼Œä½†ä¸¤è€…从镜头到感光表面的距离不同。ïÛE安装座:从镜头安装基准面到焦点的距离æ˜?7.526mm。ïÛEåQ›_®‰è£…åñ”åQšå…¶é•œå¤´å®‰è£…基准面到焦点的距¼›ÀL˜¯12.5mm。如果要ž®†ä¸€ä¸ªïÛE安装座镜头安装到一个ïÛEåQ›_®‰è£…åñ”摄象æœÞZ¸Šæ—Óž¼Œæ­¤æ—¶åº”将摄象机前部的垫圈取下再安装镜头。反之则需要ä‹É用镜头è{换器ã€?/p><p>       ä»¥ä¸Šæ˜¯ä¸œèŽžé±¼çœ¼é•œå¤´è®²˜q°çš„分类选型æ–ÒŽ³•åQŒå¸Œæœ›æ­¤æ–‡ç« å¯ä»¥å¸®åŠ©åˆ°æ‚¨ã€?/p><p><img src="/img.ashx?shopid=7700&file=2023041409102845.jpg" style="max-width: 100%;" data-filename="img"><br></p></div> <div class="newsnext"><div>上一条:<a href="news934688.html">了解鱼眼镜头åQˆäºŒåQ?/a></div><div>下一条:<a 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