JP4148055B2 - 集光方法及びレンズ - Google Patents
集光方法及びレンズ Download PDFInfo
- Publication number
- JP4148055B2 JP4148055B2 JP2003272811A JP2003272811A JP4148055B2 JP 4148055 B2 JP4148055 B2 JP 4148055B2 JP 2003272811 A JP2003272811 A JP 2003272811A JP 2003272811 A JP2003272811 A JP 2003272811A JP 4148055 B2 JP4148055 B2 JP 4148055B2
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- receiving element
- lens
- light receiving
- condensing
- light
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
Description
2 発光素子
3 受光素子
31 検知面
9 平行光変換レンズ
10 集光レンズ
11 出射面
12 曲率が互いに相違している各部(直線部分)
12A 光軸に近い部位(内側円錐帯部)
12B 光軸から遠い部位(外側円錐帯部)
13 曲率が互いに相違している各部(凸形状)
14 曲率が互いに相違している各部(凹形状)
S 集光スポット
A 光軸
Claims (2)
- 雨滴検知装置において受光素子に集光する集光方法において、
集光スポット半径を前記受光素子のチップサイズの1/2〜3倍にし、かつ、
レンズの曲率を部分的に変えることによって、前記集光スポット半径が前記受光素子のチップサイズの1/2〜3倍になり、前記レンズにおいて曲率が互いに相違している各部は、光軸に近い部位で幅広に形成され、光軸から遠い部位で幅狭に形成されていることを特徴とする集光方法。 - 雨滴検知装置において受光素子に集光するためのレンズにおいて、
集光スポット半径を前記受光素子のチップサイズの1/2〜3倍にするよう構成され、かつ、レンズの曲率は部分的に異なり、また、前記レンズにおいて曲率が互いに相違している各部は、光軸に近い部位で幅広に形成され、光軸から遠い部位で幅狭に形成されていることを特徴とするレンズ。
Priority Applications (1)
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JP2003272811A JP4148055B2 (ja) | 2003-07-10 | 2003-07-10 | 集光方法及びレンズ |
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JP2003272811A JP4148055B2 (ja) | 2003-07-10 | 2003-07-10 | 集光方法及びレンズ |
Publications (2)
Publication Number | Publication Date |
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JP2005031016A JP2005031016A (ja) | 2005-02-03 |
JP4148055B2 true JP4148055B2 (ja) | 2008-09-10 |
Family
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JP2003272811A Expired - Fee Related JP4148055B2 (ja) | 2003-07-10 | 2003-07-10 | 集光方法及びレンズ |
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JP (1) | JP4148055B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202006000742U1 (de) * | 2006-01-18 | 2007-05-24 | Trw Automotive Electronics & Components Gmbh & Co. Kg | Optische Sensorvorrichtung |
JP5077780B2 (ja) | 2009-07-06 | 2012-11-21 | 株式会社デンソー | 光検出装置 |
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2003
- 2003-07-10 JP JP2003272811A patent/JP4148055B2/ja not_active Expired - Fee Related
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JP2005031016A (ja) | 2005-02-03 |
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