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加固是使用於嚴苛環境的成像鏡頭的必要製程 |
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但不是所有加固都相同 |
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新興應用需要更先進的加固製程 |
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加固需求:減少像素偏移,維持指向穩定性 |
使用於嚴峻環境的成像鏡頭有著比標準成像鏡頭更特殊的需求。使用於工廠自動化、機器人和工業檢查的鏡頭經常暴露於振動、撞擊、溫度變化和汙染。加固也就是強化鏡頭的動作,能讓鏡頭抵抗嚴峻環境,且隨著全球像是機器人、自動化和自主系統等新興市場的崛起,加固的重要性也不斷攀升。多數標示加固、強化或嚴峻環境的成像鏡頭都是採用工業加固來降低成本,及避免因撞擊和振動而使焦點改變。這可透過簡化機構的方式來達成。但是,工業加固無法滿足對保持成像系統校準的嚴苛要求。另一種更為堅固的加固,稱之為穩定性加固,其能減少像素偏移,真正保護鏡頭抵抗撞擊和振動。
工業加固後的鏡頭機構經過簡化,將可調光圈換成固定孔徑光欄,將不可轉動的雙螺紋鏡筒換成簡易的單螺紋,以及夾具、螺帽或固定螺絲等堅固的鎖定機構。減少可動零件的數量,進而降低鏡頭成本,使其擁有比標準成像鏡頭更高的穩定性,如此鏡頭焦點便不容易因為輕微的撞擊和振動而改變。但力道過大的撞擊和振動仍可能使透鏡內個別的光學元件偏心並造成像素偏移,也就是讓物體在圖像傳感器上映射到不正確的位置(請參閱圖 1 和圖 2)。
穩定性加固比工業加固更能保護鏡頭抵抗強力撞擊和振動,同時保持光學元件的指向性和定位。穩定性加固鏡頭擁有與工業加固相同的簡化機構,像是去除光圈,使用較簡單的對焦,且鏡頭組內所有的獨立元件均黏著定位,以免其在外框內移動。如此焦點在強力撞擊和振動下仍能保持不變,同時避免像素偏移,這對經過校準的成像系統來說尤其重要。請參閱圖 3 和圖 4,瞭解消除像素偏移對成像效能的影響。穩定性加固可讓校準的裝置在某一處組裝,然後再運送到另一處,且校準不會偏離。多數標示加固的鏡頭均採用工業加固,無法享有穩定性加固所能提供的額外優點。
若要詳細瞭解各種成像鏡頭加固,請觀看由愛特蒙特光學®成像事業部主管 Greg Hollows 主持的網路研討會。
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愛特蒙特光學®是全球領先的穩定性加固成像鏡頭供應商,還能依需求提供客製化的鏡頭加固。這些鏡頭極適合容易受撞擊和振動的嚴峻環境,也適用於經過校準的成像應用,包括自動駕駛車、視覺導引機器人、測量和計測,以及物體追蹤。
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經過穩定性加固,可將受撞擊和振動後的像素偏移降到最低 |
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各鏡頭元件均黏著固定,以保持光學元件的指向穩定性 |
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簡化對焦機構,有多種固定光圈選項 |
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不鏽鋼鎖定 C 接環夾具 |
是的,愛特蒙特光學®具有在光學領域經驗豐富的人員和機械設計師,加上擁有世界級的製造技術,能支援原型設計,為您提供符合應用要求的鏡頭。如需詳細資訊,請聯絡我們的技術支援工程師。
是的,我們除了能加固鏡頭,還提供其他多項修改,像是外框修改、工作距離調整、濾鏡或液體鏡頭整合、光圈更換等等。如需詳細資訊,請聯絡我們的技術支援工程師。
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