JPH0380406U - - Google Patents
Info
- Publication number
- JPH0380406U JPH0380406U JP14044089U JP14044089U JPH0380406U JP H0380406 U JPH0380406 U JP H0380406U JP 14044089 U JP14044089 U JP 14044089U JP 14044089 U JP14044089 U JP 14044089U JP H0380406 U JPH0380406 U JP H0380406U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- condenser lens
- condenser
- tapered surface
- conical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 1
- 210000001747 pupil Anatomy 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000011514 reflex Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Description
第１図は本考案によるコンデンサレンズの取付
構造を示した実施例断面図、第２図は一眼レフレ
ツクスカメラを対象とした本考案の焦点検出装置
の取付構造を示した実施例構成図、第３図は第２
図のＹ−Ｙ断面図、第４図は第３図のＺ方向から
見た説明図、第５図はコンデンサレンズが傾いて
取付けられた状態の説明図、第６図はコンデンサ
レンズが傾いた場合の作用説明図、第７図はコン
デンサレンズが平行移動した場合の作用説明図、
第８図は従来装置の構成図、第９図は従来のコン
デンサレンズの取付け構造説明図である。
主要部分の符号の説明、１００……焦点検出装
置、１０……撮影レンズ、２０……視野マスク、
３０……コンデンサレンズ、３４，９８……テー
パ面、４０……絞りマスク、４１，４２……絞り
開口部、５０……再結像レンズ、５１，５２……
レンズ部、６０……イメージセンサ、９０……ハ
ウジング、Ａ，Ｂ……センサアレイ。
FIG. 1 is a sectional view of an embodiment showing a mounting structure for a condenser lens according to the present invention, and FIG. 2 is a configuration diagram of an embodiment showing a mounting structure of a focus detection device of the present invention intended for a single-lens reflex camera. Figure 3 is the second
The Y-Y sectional view in the figure, Figure 4 is an explanatory diagram seen from the Z direction of Figure 3, Figure 5 is an explanatory diagram of the condenser lens installed at an angle, and Figure 6 is an explanatory diagram of the condenser lens installed at an angle. Fig. 7 is an explanatory diagram of the action when the condenser lens moves in parallel.
FIG. 8 is a block diagram of a conventional device, and FIG. 9 is an explanatory diagram of a conventional condenser lens mounting structure. Explanation of symbols of main parts, 100... focus detection device, 10... photographing lens, 20... visual field mask,
30... Condenser lens, 34, 98... Tapered surface, 40... Aperture mask, 41, 42... Aperture opening, 50... Re-imaging lens, 51, 52...
Lens section, 60...image sensor, 90...housing, A, B...sensor array.
Claims (1)
れたコンデンサレンズと、該コンデンサレンズの
後方に設けられ二つ以上の光透過部を有する絞り
手段と、該絞り手段の後方に設けられ前記撮影レ
ンズ上での瞳分割に対応した一対の二次像をライ
ンセンサ上に形成する再結像レンズとを備え、前
記コンデンサレンズをレンズ取付け部により支持
した構造の焦点検出装置に於いて、 前記コンデンサレンズは、レンズ部と、該レン
ズ部周辺に形成されレンズ光軸を軸中心とする円
錐体の円錐面で与えられるテーパ面を有し、 前記レンズ取付け部は、前記コンデンサレンズ
のテーパ面を与える前記円錐体と実質的に同軸な
円錐体の円錐面で与えられるテーパ面を有し、 前記コンデンサレンズのテーパ面とレンズ取付
け部のテーパ面の当接により前記コンデンサレン
ズの位置を規制することを特徴とする焦点検出装
置。 (2) 前記コンデンサレンズのテーパ面は、前記
撮影レンズ側に径が絞られるように形成されたこ
とを特徴とする請求項１記載の焦点検出装置。[Scope of Claim for Utility Model Registration] (1) A condenser lens disposed near the expected focal position of a photographic lens, an aperture means provided behind the condenser lens and having two or more light transmitting parts, and the aperture a re-imaging lens provided at the rear of the means for forming a pair of secondary images on the line sensor corresponding to the pupil division on the photographing lens, and a focal point having a structure in which the condenser lens is supported by a lens attachment part. In the detection device, the condenser lens has a lens portion and a tapered surface formed around the lens portion and formed by a conical surface of a cone centered on the optical axis of the lens, and the lens mounting portion includes: The condenser lens has a tapered surface provided by a conical surface of a conical body substantially coaxial with the conical body, and the condenser lens has a tapered surface provided by a conical surface of a conical body substantially coaxial with the conical body, and the condenser A focus detection device characterized by regulating the position of a lens. (2) The focus detection device according to claim 1, wherein the tapered surface of the condenser lens is formed so that its diameter is narrowed toward the photographic lens side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14044089U JP2503516Y2 (en) | 1989-12-04 | 1989-12-04 | Focus detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14044089U JP2503516Y2 (en) | 1989-12-04 | 1989-12-04 | Focus detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0380406U true JPH0380406U (en) | 1991-08-19 |
| JP2503516Y2 JP2503516Y2 (en) | 1996-07-03 |
Family
ID=31687415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14044089U Expired - Lifetime JP2503516Y2 (en) | 1989-12-04 | 1989-12-04 | Focus detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503516Y2 (en) |
-
1989
- 1989-12-04 JP JP14044089U patent/JP2503516Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2503516Y2 (en) | 1996-07-03 |
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