紅點鏡

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紅點鏡（red dot sight）也叫內紅點，是一类只使用一个发光二极管发光形成单一的红色（有时也会是绿色）瞄准点的反射式瞄具，是一種無放大率的光學瞄具。由於紅點鏡中射入眼睛的光點（光射）永遠與紅點鏡平衡，即使眼睛不在紅點鏡的中軸上，也能透過紅點準確瞄準，可提升高速移動或身體搖晃時的射擊精確度，因此被各國大量使用於軍事槍械甚至戰機的抬頭顯示器上。另外，特殊光線除了可由發光二極管生成外，亦可由自然光或極低放射性的放射物（半永久有效）提供。

與激光束瞄準差異
紅點鏡與激光瞄准器不同：激光指示器是一種能將一激光紅點投射於目標上的器材，而紅點鏡則把特殊光線由鍍膜鏡片（析光鏡）點狀反射進射手眼睛；所以目標無法發現自己身上有光點。

參見
*照準器
**机械瞄具 — 较为传统的瞄准装置
**全息瞄具 — 与红点镜类似的瞄准装置
**雷射瞄具 — 在目标上射点的瞄准装置

• ITL MARS一體化紅點鏡
• Aimpoint Comp M2紅點鏡
• Aimpoint Comp M4紅點鏡

參考資料
*[http://firearmsworld.net/sight/scope3.htm 反射式瞄准镜简介]

延伸閱讀

• [http://books.google.com/books?id=FZVBAAAAYAAJ&pg=PA552&dq=reflector+gun+sight+grubb&hl=en&ei=0-SLTYatDoPJgQfJyIyvDQ&sa=X&oi=book_result&ct=result&resnum=2&ved=0CDYQ6AEwAQ#v=onepage&q=reflector%20gun%20sight%20grubb&f=false Journal of the Military Service Institution of the United States: Volume 37 - Page 552 -THE GRUBB GUN SIGHT]
• [http://books.google.com/books?id=UPUQAAAAIAAJ&pg=PA118&img=1&zoom=3&hl=en&sig=ACfU3U2P7PrBCACw95acwK1lWUXY-cQOGw&ci=123%2C256%2C790%2C120&edge=0 The Mining engineer, Volume 23 By Institution of Mining Engineers (Great Britain). THE GRUBB SIGHT FOR SURVEYING INSTRUMENTS By Sir HOWARD GRUBB and HENRY DAVIS]
• [http://books.google.com/books?id=pIzpAAAAMAAJ&pg=PA353&lpg=PA353&dq=Transactions+of+the+Royal+Dublin+Society+March+20+1901&source=bl&ots=SoFiUSEcXx&sig=NG5Wek7LoxTHzY1hPxgw_Z076b0&hl=en&ei=wbGXTd-_MuGX0QGg0uz6Cw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBcQ6AEwAA#v=onepage&q=grubb&f=false The scientific transactions of the Royal Dublin Society By Royal Dublin Society - A NEW COLLIMATING TELESCOPE GUN SIGHT FOR LARGE AND SMALL ORDNANCE By SIR HOWARD GRUBB FRS Vice President Royal Dublin Society]
• [https://web.archive.org/web/20160624113424/http://www.patentgenius.com/patent/3942901.html John Arne Ingemund Ekstrand's U.S. Patent 3,942,901 for a "Optical sighting instrument with means for producing a sighting mark" filed December 7, 1973]

外部連結
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• [http://www.antiaircraft.org/quad50.htm Article on the WWII Maxon M45 machine gun mount with section on the Navy Mark 9 reflector sight]
• [http://findarticles.com/p/articles/mi_m0BTT/is_187_31/ai_n27177540/ May-June, 2007 CBS Interactive Business Network article: Seeing red: illuminated reticle sights]