JPH1048509A5

JPH1048509A5 -

Info

Publication number: JPH1048509A5
Application number: JP1996202195A
Authority: JP
Filing date: 1996-07-31
Publication date: 2004-08-19
Anticipated expiration: 2016-07-31

Description

【００１２】
［３］視差を有する複数のレンズと、これら複数のレンズのそれぞれの焦点位置に置かれた複数の受光素子列とを備え、それぞれの受光素子列に入射する光量分布に基づいて被写体までの距離を測距する第１測距手段と、この第１測距手段の複数のレンズとこの複数の受光素子列との間に配され、入射した光線を分割する光路分割手段と、この光路分割手段によって得られる光路を介して、該被写体に向けて測距用の光束を投射する投射手段と、この投射による該被写体からの反射光を受光する受光手段とを備え、更に、受光した反射光の光路長に基づき該被写体までの距離を測距する第２測距手段と、所定の測距条件に応じて、この第１測距手段または前記第２測距手段のいずれか一方を選択的に作動させる制御手段とを具備することを特徴とするカメラの測距装置を提供する。
［４］被写体からの光を異なる位置に設けた第１と第２のレンズにて受光し、それぞれの透過光の光分布を検出する受光素子列を具備し、第１、第２のレンズを介してこの受光素子列で検出したそれぞれの透過光の光分布の相対位置に基づいて、被写体までの距離を検出するカメラの測距装置において、これら第１、第２のレンズと受光素子列との間に、光路を分割する分割光学系を設けたことを特徴とするカメラの測距装置を提供する。
［５］これら第１、第２のレンズの一方を通過した光の一部が、カメラのファインダ光学系に入射し、他方のレンズを透過した光の一部が、カメラの露出制御用の測光センサに入射することを特徴とする［４］に記載のカメラの測距装置を提供する。
［６］被写体に対して測距用の光束を投射する投光手段をさらに具備し、これら第１、第２のレンズの一方を通過した光の一部が、この受光素子列とは別体に設けられた、この測距用の光束による被写体からの反射光を受光するためのセンサに入射することを特徴とする［４］に記載のカメラの測距装置を提供する。
［７］被写体に対して測距用の光束を投射する投光手段と、この被写体からの反射光を受光し、その反射光の入射位置を検出する光位置検出手段と、この被写体の像を視差を有する複数の光路を介して検出し、それぞれの被写体像の相対位置差を検出する複数のセンサアレイと、この光位置検出手段の出力、またはこれら複数のセンサアレイ上の被写体像の相対位置差に基づいて、この被写体までの距離を演算する演算制御手段とを具備し、このセンサアレイによる受光時にもこの投光手段を作動させることを特徴とするカメラの測距装置を提供する。
［８］被写体の輝度が高く、コントラストが低いときには、前記光位置検出手段を優先して用いることを特徴とする［７］に記載のカメラの測距装置を提供する。
［９］ストロボ装置を有するカメラにおいて、被写体に対し測距用の光束を投射するための発光素子と、撮影画面内の複数の点を測距する第１の測距用受光素子と、画面内の一点を測距する第２の受光素子とを具備し、第１の受光素子を用いるときはストロボ装置を発光させ、第２の受光素子を用いるときは発光素子を作動させるように制御することを特徴とするカメラの測距装置を提供する。 [0012]
[3] Provided is a distance measuring device for a camera, comprising: a first distance measuring means having a plurality of lenses with parallax and a plurality of light receiving element arrays placed at the focal positions of each of the plurality of lenses, and measuring the distance to a subject based on the distribution of light intensity incident on each of the light receiving element arrays; an optical path splitting means arranged between the plurality of lenses of the first distance measuring means and the plurality of light receiving element arrays and splitting the incident light beam; a projection means for projecting a light beam for distance measuring toward the subject through the optical path obtained by the optical path splitting means; and a light receiving means for receiving light reflected from the subject by this projection; a second distance measuring means for measuring the distance to the subject based on the optical path length of the received reflected light; and a control means for selectively operating either the first distance measuring means or the second distance measuring means according to predetermined distance measuring conditions.
[4] A camera distance measuring device is provided which receives light from a subject with first and second lenses arranged at different positions and has a light receiving element array which detects the light distribution of each transmitted light, and detects the distance to the subject based on the relative positions of the light distribution of each transmitted light detected by this light receiving element array through the first and second lenses, and which is characterized in that a split optical system which splits the optical path is provided between the first and second lenses and the light receiving element array.
[5] Provided is a distance measuring device for a camera as described in [4], characterized in that a portion of the light that passes through one of the first and second lenses is incident on the viewfinder optical system of the camera, and a portion of the light that passes through the other lens is incident on a photometric sensor for exposure control of the camera.
[6] Provided is a distance measuring device for a camera as described in [4], further comprising a light projecting means for projecting a light beam for distance measurement onto the subject, and a portion of the light passing through one of the first and second lenses is incident on a sensor provided separately from the light receiving element array for receiving reflected light from the subject by the light beam for distance measurement.
[7] A distance measuring device for a camera is provided, which comprises a light projection means for projecting a light beam for distance measurement onto a subject, a light position detection means for receiving reflected light from the subject and detecting the incident position of the reflected light, a plurality of sensor arrays for detecting images of the subject via a plurality of optical paths having parallax and detecting the relative position difference between each of the subject images, and an arithmetic control means for calculating the distance to the subject based on the output of the light position detection means or the relative position difference between the subject images on the plurality of sensor arrays, and which is characterized in that the light projection means is operated even when light is received by the sensor array.
[8] The distance measuring device for a camera according to [7] is characterized in that when the brightness of the subject is high and the contrast is low, the light position detecting means is used preferentially.
[9] A distance measuring device for a camera having a strobe device is provided, which comprises a light emitting element for projecting a light beam for distance measurement onto a subject, a first light receiving element for distance measurement that measures distances to multiple points within the photographic screen, and a second light receiving element that measures distances to a single point within the screen, and is controlled so that the strobe device is illuminated when the first light receiving element is used, and the light emitting element is activated when the second light receiving element is used.

Claims

A distance measuring device having a plurality of lenses having parallax and a plurality of light receiving element arrays placed at the focal positions of the plurality of lenses, the distance measuring device measuring a distance to a subject based on a distribution of light intensity incident on each of the light receiving element arrays,
A distance measuring device for a camera, characterized in that an optical path splitting means for splitting incident light rays on the plurality of lenses is disposed between the plurality of lenses and the plurality of light receiving element arrays, and the plurality of optical paths obtained by this optical path splitting means are also used as optical paths for purposes other than distance measurement.

The optical path for purposes other than distance measurement includes at least
The viewfinder optical path for the viewfinder field of view,
The light receiving path of the photometric sensor for photometry,
A light projection optical path of a light emitting means for emitting light to a subject, or
2. The distance measuring device for a camera according to claim 1, wherein the distance measuring device is a receiving optical path for a remote control light beam from a remote control device.

a first distance measuring means including a plurality of lenses having parallax and a plurality of light receiving element arrays placed at the focal positions of the plurality of lenses, the first distance measuring means measuring the distance to the subject based on the distribution of the amount of light incident on each of the light receiving element arrays;
an optical path splitting means disposed between the plurality of lenses of the first distance measuring means and the plurality of light receiving element arrays, for splitting an incident light beam;
a second distance measuring means including a projection means for projecting a light beam for distance measurement toward the subject through an optical path obtained by the optical path splitting means, and a light receiving means for receiving light reflected from the subject by the projection, and for measuring the distance to the subject based on the optical path length of the received reflected light;
a control means for selectively operating either the first distance measuring means or the second distance measuring means in accordance with a predetermined distance measuring condition;
A distance measuring device for a camera, comprising:

a light receiving element array for receiving light from a subject by first and second lenses provided at different positions and detecting the light distribution of each transmitted light;
The transmitted light beams detected by the light receiving element array through the first and second lenses are A distance measuring device for a camera that detects a distance to a subject based on a relative position of a light distribution of
a splitting optical system for splitting an optical path provided between said first and second lenses and said light receiving element array;

5. A distance measuring device for a camera as described in claim 4, wherein a portion of the light that passes through one of the first and second lenses is incident on the viewfinder optical system of the camera, and a portion of the light that passes through the other lens is incident on a photometric sensor for exposure control of the camera.

A camera distance measuring device as described in claim 4, further comprising a light projecting means for projecting a light beam for distance measurement onto the subject, and a portion of the light passing through one of the first and second lenses is incident on a sensor, provided separately from the light receiving element array, for receiving reflected light from the subject by the light beam for distance measurement.

a light projection means for projecting a light beam for distance measurement onto an object;
a light position detecting means for receiving the reflected light from the subject and detecting the incident position of the reflected light;
a plurality of sensor arrays that detect images of the subject via a plurality of optical paths having parallax and detect relative position differences between the respective subject images;
an arithmetic and control means for calculating a distance to the subject based on an output of the light position detection means or a relative position difference between subject images on the plurality of sensor arrays;
Equipped with
A distance measuring device for a camera, characterized in that the light projecting means is activated even when the sensor array receives light.

8. The distance measuring device for a camera according to claim 7, wherein when the brightness of the subject is high and the contrast is low, the light position detecting means is used preferentially.

In a camera having a strobe device,
A light-emitting element for projecting a light beam for distance measurement onto a subject, a first light-receiving element for distance measurement that measures the distance to a plurality of points within the photographic screen, and a second light-receiving element that measures the distance to a single point within the screen. and,
When the first light receiving element is used, the strobe device is caused to emit light;
A distance measuring device for a camera, characterized in that when the second light receiving element is used, the light emitting element is controlled to be activated.