JP2013250362A - 撮影レンズ、撮像装置、及び光学素子 - Google Patents
撮影レンズ、撮像装置、及び光学素子 Download PDFInfo
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Abstract
【解決手段】撮像装置に用いられる撮影レンズを構成する光学素子であって、像側に凹面R2を有し、前記凹面R2の端部を面取りする面取り部Tを有するとき、条件式を満足することを特徴とする光学素子。
【選択図】図1
Description
(1) n1>n2
(2) 0<θ1<{arcsin(n2/n1)−arccos(h/R)}/2+π/4
θ1:面取り部Tと光軸とがなす角度
h:面取り部Tで反射した光線HLが凹面R2に入射した位置の光線高
R:凹面R2の曲率半径
n1:光学素子の屈折率
n2:光学素子の周辺を充填する媒質の屈折率
(1) n1>n2
(2) 0<θ1<{arcsin(n2/n1)−arccos(h/R)}/2+π/4
θ1:面取り部Tと光軸Aとがなす角度
h:面取り部Tで反射した光線HLが凹面R2に入射した位置の光線高
R:凹面R2の曲率半径
n1:光学素子の屈折率
n2:光学素子の周辺を充填する媒質の屈折率
(a) θ2=arccos(h/R)
(b) θc=−π/2+2θ1+θ2
(c) θc<arcsin(n2/n1)
ただし、
(1) n1>n2
(d) −π/2+2θ1+arccos(h/R)<arcsin(n2/n1)
(e) 0<θ1
(1) n1>n2
(2) 0<θ1<{arcsin(n2/n1)−arccos(h/R)}/2+π/4
θc=−90°+2θ1+θ2
=−90°+2θ1+arccos(h/R)
=−90°+2×45°+arccos(0/14.42)
=90°
θm=arcsin(n2/n1)
=arcsin(1.000/1.883)
=32.1°
(1)n1>n2
(2)0<θ1<{arcsin(n2/n1)−arccos(h/R)}/2+π/4
0<θ1<(32.1°−90°)/2+45°
0<θ1<16.1°
θc=−90°+2θ1+θ2
θc=−90°+2×15°+arccos(0/14.42)
=30°
L2 第2レンズ群
L3 第3レンズ群
L4 第4レンズ群
G4 第4レンズ
S 開口絞り
I 像面
TL 接線
HL 光線
A 光軸
R1 物体側の面
R2 像側の面
θ1 面取り部Tと光軸とがなす角度
θ2 接線TLと光軸とがなす角度
θc 面取り部Tで反射した光線HLの凹面R2への入射角
h 面取り部Tで反射した光線HLが凹面R2に入射した位置の光線高
Claims (3)
- 撮像装置に用いられる撮影レンズを構成する光学素子であって、
像側に凹面R2を有し、
前記凹面R2の端部を面取りする面取り部Tを有するとき、以下の条件式(1)及び(2)を満足することを特徴とする光学素子。
(1) n1>n2
(2) 0<θ1<{arcsin(n2/n1)−arccos(h/R)}/2+π/4
θ1:面取り部Tと光軸とがなす角度
h:面取り部Tで反射した光線HLが凹面R2に入射した位置の光線高
R:凹面R2の曲率半径
n1:光学素子の屈折率
n2:光学素子の周辺を充填する媒質の屈折率
- 請求項1記載の光学素子を有する撮影レンズ。
- 請求項1記載の光学素子を有する撮像装置。
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JP2012123916A JP6062160B2 (ja) | 2012-05-31 | 2012-05-31 | 光学素子の設計方法 |
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JP2012123916A JP6062160B2 (ja) | 2012-05-31 | 2012-05-31 | 光学素子の設計方法 |
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JP2013250362A true JP2013250362A (ja) | 2013-12-12 |
JP6062160B2 JP6062160B2 (ja) | 2017-01-18 |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03211030A (ja) * | 1990-01-17 | 1991-09-13 | Hitachi Ltd | プラスチックレンズ |
JPH05164905A (ja) * | 1991-12-11 | 1993-06-29 | Hitachi Ltd | レンズ玉 |
JPH0720366A (ja) * | 1993-06-29 | 1995-01-24 | Nikon Corp | レンズ部品 |
JP2007114378A (ja) * | 2005-10-19 | 2007-05-10 | Ricoh Co Ltd | ズームレンズ、撮像装置および撮影装置 |
JP2008064851A (ja) * | 2006-09-05 | 2008-03-21 | Fujinon Corp | レンズ装置 |
JP2009282071A (ja) * | 2008-05-19 | 2009-12-03 | Fujinon Corp | レンズ組立体および撮像装置 |
JP2010169971A (ja) * | 2009-01-23 | 2010-08-05 | Olympus Corp | 光学素子とその加工方法、及び面取り兼研削砥石 |
JP2010276755A (ja) * | 2009-05-27 | 2010-12-09 | Konica Minolta Opto Inc | 超広角アナモルフィックレンズ |
-
2012
- 2012-05-31 JP JP2012123916A patent/JP6062160B2/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03211030A (ja) * | 1990-01-17 | 1991-09-13 | Hitachi Ltd | プラスチックレンズ |
JPH05164905A (ja) * | 1991-12-11 | 1993-06-29 | Hitachi Ltd | レンズ玉 |
JPH0720366A (ja) * | 1993-06-29 | 1995-01-24 | Nikon Corp | レンズ部品 |
JP2007114378A (ja) * | 2005-10-19 | 2007-05-10 | Ricoh Co Ltd | ズームレンズ、撮像装置および撮影装置 |
JP2008064851A (ja) * | 2006-09-05 | 2008-03-21 | Fujinon Corp | レンズ装置 |
JP2009282071A (ja) * | 2008-05-19 | 2009-12-03 | Fujinon Corp | レンズ組立体および撮像装置 |
JP2010169971A (ja) * | 2009-01-23 | 2010-08-05 | Olympus Corp | 光学素子とその加工方法、及び面取り兼研削砥石 |
JP2010276755A (ja) * | 2009-05-27 | 2010-12-09 | Konica Minolta Opto Inc | 超広角アナモルフィックレンズ |
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