JPS6429615U - - Google Patents
Info
- Publication number
- JPS6429615U JPS6429615U JP9859588U JP9859588U JPS6429615U JP S6429615 U JPS6429615 U JP S6429615U JP 9859588 U JP9859588 U JP 9859588U JP 9859588 U JP9859588 U JP 9859588U JP S6429615 U JPS6429615 U JP S6429615U
- Authority
- JP
- Japan
- Prior art keywords
- zone
- zones
- photometric
- detection device
- photographic lens
- 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 3
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 2
- 238000005375 photometry Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Focusing (AREA)
Description
第１図は本考案のゾーン式オートフオーカス検
出装置の原理を説明するための図、第２図は信号
処理回路を示す回路結線図、第３図は本考案装置
をコンパクトカメラに実装した場合の正面図、第
４図は本考案装置の他の実施例を示す断面図、第
５図は本考案装置を撮影レンズ周囲に配置した場
合の斜視図および第６図は第５図実施例の正面図
をそれぞれ示す。
Ｌ０ないしＬ４……結像レンズ、Ｐ０ないしＰ
４……受光素子、１ないし５……プリアンプ、６
ないし１０……可変抵抗、１１ないし１４……比
較回路、３０……赤外線発光器、３１……フアイ
ンダー、３３……閃光器、３５…レリーズボタン
、４０ないし４５……反射ミラー、５１ないし５
７……受光手段、５１′ないし５７′……受光手
段。
Fig. 1 is a diagram for explaining the principle of the zone type autofocus detection device of the present invention, Fig. 2 is a circuit connection diagram showing the signal processing circuit, and Fig. 3 is a diagram showing the case where the device of the present invention is implemented in a compact camera. 4 is a sectional view showing another embodiment of the device of the present invention, FIG. 5 is a perspective view of the device of the present invention arranged around the photographic lens, and FIG. 6 is a cross-sectional view showing another embodiment of the device of the present invention. Each shows a front view. L 0 to L 4 ...imaging lens, P 0 to P
4 ...Photodetector, 1 to 5...Preamplifier, 6
to 10...variable resistor, 11 to 14...comparison circuit, 30...infrared emitter, 31...finder, 33...flash device, 35...release button, 40 to 45...reflection mirror, 51 to 5
7... Light receiving means, 51' to 57'... Light receiving means.
Claims (1)
分割された各ゾーンの被写体輝度をそれぞれ測光
するために各ゾーン数に対応した結像光学系およ
び受光素子からなる測光手段を撮影レンズ近傍に
配設し、前記各ゾーンを測光する測光手段のそれ
ぞれの測光出力の差が最小値を示すゾーンをもつ
て合焦位置となすように構成したことを特徴とす
るゾーン式オートフオーカス検出装置。 The optical axis of the photographic lens is divided into a plurality of zones, and in order to measure the brightness of the subject in each of the divided zones, a photometry means consisting of an imaging optical system and a light receiving element corresponding to the number of zones is arranged near the photographic lens. A zone type autofocus detection device characterized in that the zone type autofocus detection device is configured such that the zone in which the difference between the photometric outputs of the photometric outputs of the photometric means for photometrically measuring each zone is the minimum value is set as the focal position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988098595U JPH026430Y2 (en) | 1988-07-26 | 1988-07-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988098595U JPH026430Y2 (en) | 1988-07-26 | 1988-07-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6429615U true JPS6429615U (en) | 1989-02-22 |
| JPH026430Y2 JPH026430Y2 (en) | 1990-02-16 |
Family
ID=31325010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988098595U Expired JPH026430Y2 (en) | 1988-07-26 | 1988-07-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH026430Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50138825A (en) * | 1974-03-29 | 1975-11-06 | ||
| JPS51134438U (en) * | 1975-04-21 | 1976-10-29 |
-
1988
- 1988-07-26 JP JP1988098595U patent/JPH026430Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50138825A (en) * | 1974-03-29 | 1975-11-06 | ||
| JPS51134438U (en) * | 1975-04-21 | 1976-10-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH026430Y2 (en) | 1990-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2000171687A (en) | Range-finder | |
| JPS6429615U (en) | ||
| JP2000171246A (en) | Range finder | |
| US4459003A (en) | Zone-type range-detecting devices for cameras | |
| JPS606114U (en) | focus detection device | |
| JPS6314113U (en) | ||
| JPH0245537U (en) | ||
| JPS5834414A (en) | Focus detector | |
| JPH0271828U (en) | ||
| JPS63259624A (en) | Range finder | |
| JPS63259625A (en) | Range finder for camera | |
| JPH0714810Y2 (en) | Rangefinder | |
| JPS62121506U (en) | ||
| JP2588406B2 (en) | Apparatus and method for determining shape | |
| JPS63259626A (en) | Range finder for camera | |
| JPS606115U (en) | Ranging or focus detection device | |
| JPS61129609A (en) | Optical system for automatic focus detection | |
| JPS5896519U (en) | camera photometry device | |
| JPH01245210A (en) | Range-finder for camera | |
| JPH0340503U (en) | ||
| JPS587113A (en) | Autofocusing device due to multipoint photometry | |
| JPH0295324U (en) | ||
| JPS6299034U (en) | ||
| JPS62120717U (en) | ||
| JPS61113466U (en) |