JP2001083402A5 - - Google Patents

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Publication number
JP2001083402A5
JP2001083402A5 JP1999255661A JP25566199A JP2001083402A5 JP 2001083402 A5 JP2001083402 A5 JP 2001083402A5 JP 1999255661 A JP1999255661 A JP 1999255661A JP 25566199 A JP25566199 A JP 25566199A JP 2001083402 A5 JP2001083402 A5 JP 2001083402A5
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JP
Japan
Prior art keywords
light
photographing lens
optical
reflecting member
reflecting
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JP1999255661A
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Japanese (ja)
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JP4439626B2 (en
JP2001083402A (en
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Publication date
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Priority to JP25566199A priority Critical patent/JP4439626B2/en
Priority claimed from JP25566199A external-priority patent/JP4439626B2/en
Publication of JP2001083402A publication Critical patent/JP2001083402A/en
Publication of JP2001083402A5 publication Critical patent/JP2001083402A5/ja
Application granted granted Critical
Publication of JP4439626B2 publication Critical patent/JP4439626B2/en
Anticipated expiration legal-status Critical
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Description

【特許請求の範囲】
【請求項】 撮影レンズを通過した光束を複数の光束に分割し、撮像の際には撮像光束外へ退避する第1反射部材と、該第1反射部材からの光を反射させる第2反射部材とを有する光学機器において、
該第1反射部材と第2反射部材との間には該第1反射部材により分割された光束の射出角を小さくする方向に偏向させる光偏向部材が設けられていることを特徴とする光学機器。
【請求項】 前記第1反射部材は半透過面を利用して、前記撮影レンズからの光束を2つに分割していることを特徴とする請求項の光学機器。
【請求項】 前記光偏向部材は回折光学素子より成り、前記反射部材の半透過面を通過してきた光束を偏向していることを特徴とする請求項の光学機器。
[Claims]
1. A dividing a light beam passing through the photographing lens into a plurality of light beams, a first reflecting member which escaped to the image light Tabagai during imaging, the second reflective for reflecting light from the first reflecting member In an optical device having a member
An optical device characterized in that an optical deflection member for deflecting a light beam divided by the first reflection member in a direction of reducing the emission angle is provided between the first reflection member and the second reflection member. ..
2. The optical device according to claim 1 , wherein the first reflecting member uses a semi-transmissive surface to divide a light flux from the photographing lens into two parts.
Wherein the optical deflector is made of a diffractive optical element, the optical apparatus according to claim 2, characterized in that it deflects the light beam passed through the semitransparent surface of the reflective member.

【0007】
【課題を解決するための手段】
請求項1の発明の光学機器は、撮影レンズを通過した光束を複数の光束に分割し、撮像の際には撮像光束外へ退避する第1反射部材と、該第1反射部材からの光を反射させる第2反射部材とを有する光学機器において、
該第1反射部材と第2反射部材との間には該第1反射部材により分割された光束の射出角を小さくする方向に偏向させる光偏向部材が設けられていることを特徴としている。
0007
[Means for solving problems]
The optical device according to the first aspect of the present invention divides a light beam that has passed through a photographing lens into a plurality of light beams, and at the time of imaging, a first reflecting member that retracts to the outside of the imaging light beam and light from the first reflecting member. In an optical instrument having a second reflective member to reflect
Between the first reflecting member and the second reflecting member, a light deflecting member for deflecting the emission angle of the light flux divided by the first reflecting member in a direction to be reduced is provided.

請求項2の発明は請求項1の発明において、前記第1反射部材は半透過面を利用して、前記撮影レンズからの光束を2つに分割していることを特徴としている。 The invention of claim 2 is characterized in that, in the invention of claim 1, the first reflecting member uses a semi-transmissive surface to divide a light flux from the photographing lens into two parts.

請求項3の発明は請求項2の発明において、前記光偏向部材は回折光学素子より成り、前記反射部材の半透過面を通過してきた光束を偏向していることを特徴としている。 The invention of claim 3 is characterized in that, in the invention of claim 2, the light deflecting member is composed of a diffractive optical element and deflects a light flux that has passed through a semi-transmissive surface of the reflecting member.

【0022】
【発明の実施の形態】
図1は本発明の光学機器の実施形態1の要部概略図である。同図は焦点検出装置を有したカメラ等の光学機器を示している。図2は図1の焦点検出装置を構成する主要部分の要部概略図であり、焦点検出系に入射する光束の光路を示している。図中1は撮影レンズ、1aは撮影レンズ1の瞳である。2は撮影レンズ1の光軸(一点鎖線)、3はフィルム面や撮像素子等の撮像面である。4は撮影レンズ1の光軸2上に配置された回動可能な半透過面を有する主ミラー(反射部材)、5は焦点板であり、撮影レンズ1による被写体像が主ミラー4を介して結像している。6はペンタプリズム、7は接眼レンズである。焦点板5上の被写体像をペンタプリズム6と接眼レンズ7を介して観察している。
0022.
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a schematic view of a main part of the first embodiment of the optical device of the present invention. The figure shows an optical device such as a camera having a focus detection device. FIG. 2 is a schematic view of a main part constituting the focus detection device of FIG. 1, and shows an optical path of a light flux incident on the focus detection system. In the figure, 1 is a photographing lens, and 1a is a pupil of the photographing lens 1. Reference numeral 2 is an optical axis (dashed line) of the photographing lens 1, and 3 is an imaging surface such as a film surface or an image sensor. Reference numeral 4 denotes a main mirror (reflective member) having a rotatable semitransparent surface arranged on the optical axis 2 of the photographing lens 1, and 5 is a focal plate, and a subject image by the photographing lens 1 is transmitted through the main mirror 4. The image is formed. 6 pentaprism 7 Ru eyepiece der. The subject image on the focal plate 5 is observed through the pentaprism 6 and the eyepiece lens 7.

JP25566199A 1999-09-09 1999-09-09 Optical equipment Expired - Fee Related JP4439626B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25566199A JP4439626B2 (en) 1999-09-09 1999-09-09 Optical equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25566199A JP4439626B2 (en) 1999-09-09 1999-09-09 Optical equipment

Publications (3)

Publication Number Publication Date
JP2001083402A JP2001083402A (en) 2001-03-30
JP2001083402A5 true JP2001083402A5 (en) 2006-10-26
JP4439626B2 JP4439626B2 (en) 2010-03-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP25566199A Expired - Fee Related JP4439626B2 (en) 1999-09-09 1999-09-09 Optical equipment

Country Status (1)

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JP (1) JP4439626B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005195786A (en) * 2004-01-06 2005-07-21 Canon Inc Focus detector and optical apparatus using the same
US9936125B2 (en) 2016-01-06 2018-04-03 Canon Kabushiki Kaisha Image pickup apparatus including mirror unit and method of controlling the same

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