WO2005098502A1 - 合焦情報取得用検出装置及びそれを用いた撮像装置 - Google Patents
合焦情報取得用検出装置及びそれを用いた撮像装置 Download PDFInfo
- Publication number
- WO2005098502A1 WO2005098502A1 PCT/JP2005/004997 JP2005004997W WO2005098502A1 WO 2005098502 A1 WO2005098502 A1 WO 2005098502A1 JP 2005004997 W JP2005004997 W JP 2005004997W WO 2005098502 A1 WO2005098502 A1 WO 2005098502A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- information acquisition
- focus
- luminance information
- sensor
- sub
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
Definitions
- the present invention relates to a focus information acquisition detecting device that forms an image of a subject via an optical element, and acquires focus information from a plurality of pieces of luminance information obtained in different blur states, and such focus information.
- the present invention relates to an imaging device using an acquisition detection device.
- Japanese Patent Publication No. 3-52607 discloses that an object image is projected onto a pair of light receiving elements arranged with a predetermined optical path difference before and after a plane to be focused, and obtained image information is obtained.
- a method of detecting a focused state of an object based on a predetermined evaluation function As a basic method of using this method, there is a camera equipped with a focus determination device. In this method, a so-called front focus and a rear focus are determined by obtaining object information on two surfaces separated by the same distance with respect to a plane to be focused. The result of the judgment is useful for driving, for example, a focusing lens of the focusing optical system in a correct adjustment direction.
- USP 4,965,840 image information is obtained at two locations having different optical path lengths in order to calculate a spread parameter by performing arithmetic processing on a plurality of images having different blur states and determine focus.
- the spread parameter is a representative value indicating the blur state of the image information, which is related to the point spread function of the optical system, and the point on the image plane passes through a number of paths of the optical system.
- the variance in the case where the image is formed as a region instead of as a region is represented as follows.
- a spread parameter is finally calculated under conditions of different optical path lengths, that is, based on first image information and second image information having different blur states.
- the calculation may fail in the spread parameter calculation, and an accurate value may not be obtained.
- the optical path length for which the focus is determined is too different from the imaging plane on which the focus is to be determined, the In this case, the blur state may be too different, and the focusing accuracy on the imaging surface may be reduced.
- the present invention has been made in view of the above points, and is capable of being arranged in a limited space and capable of acquiring high-precision focus information. It is an object of the present invention to provide an imaging device that has been used.
- light that has passed through at least a part of an optical system that forms light from a target object on a plane to be focused at a predetermined position is transmitted to the above-mentioned plane to be focused by the optical system.
- Light-guiding means for guiding light so as to form an image on an equivalently-focused surface which is substantially equivalent to the light, and at least two of a plurality of images having different blurs formed by the light guided by the light-guiding means.
- Brightness information obtaining means for obtaining brightness information of mutually corresponding regions in an image, wherein at least one of the obtaining positions of the brightness information is the above-mentioned plane to be equivalently focused.
- a focus information acquisition detection device is provided.
- an optical system for imaging light of an object force on the surface to be focused such as the focus information acquiring detection device according to one aspect of the present invention
- an imaging device including: a focus information acquisition detection device; and an imaging device arranged on the surface to be focused.
- FIG. 1 is a schematic diagram showing a configuration of a single-lens reflex digital camera as an imaging device using a focus information acquisition detection device according to a first embodiment of the present invention.
- FIG. 2 is a diagram showing a configuration of a focus information acquiring detection device according to a first embodiment.
- FIG. 3 is a diagram showing schematic steps of a focus determination method for calculating a spread parameter and determining focus.
- FIG. 4 illustrates a positional relationship between a focusing lens and an imaging position, and two focus determination image luminance information and two captured images for the same portion P of the same subject based on the positional relationship.
- FIG. FIG. 5 is a diagram showing a configuration of a first modification of the focus information acquiring detection device according to the first embodiment.
- FIG. 6 is a diagram showing a configuration of a second modification of the in-focus information acquiring detection device according to the first embodiment.
- FIG. 7 is a diagram showing a configuration of a focus information acquisition detecting device according to a second embodiment of the present invention.
- FIG. 8A is a diagram showing a relationship between a first equivalent in-focus plane and a main luminance information acquiring sensor when a focusing lens is at a first position.
- FIG. 8B is a diagram showing a relationship between the first equivalent in-focus plane and the main luminance information acquiring sensor when the focusing lens is at the second position.
- FIG. 8C is a diagram showing a relationship between a first equivalent focusing expected plane and a main luminance information acquisition sensor when the focusing lens is at a third position.
- FIG. 4 is a diagram illustrating a relationship with a first equivalent in-focus plane.
- FIG. 9 is a diagram showing a configuration of a focus information acquiring detection device according to a third embodiment of the present invention.
- FIG. 10 is a diagram showing a configuration of a focus information acquiring detection device according to a fourth embodiment of the present invention.
- FIG. 11 is a diagram showing a configuration of a first modified example of the focus information acquiring detection device according to the fourth embodiment.
- FIG. 12 is a diagram showing an optical configuration for describing a focus information acquisition configuration system of a general phase difference detection method.
- FIG. 13 is a diagram showing a configuration of a focus information acquiring detection device according to a fifth embodiment of the present invention.
- FIG. 14A is a diagram showing a relationship between an image sensor and a plane to be focused when the image sensor is at a first position.
- FIG. 14B is a diagram showing a relationship between the image sensor and the plane to be focused when the image sensor is at the second position.
- FIG. 14C is a diagram showing the image sensor and the plane to be focused when the image sensor is at the third position.
- the term “planned surface to be focused” is used to determine the position of the light receiving surface of the image pickup element from the reference position force on the image pickup device when the image pickup device is configured, and at the same time, Is also assumed to be located at a predetermined position from the imaging device reference point.
- the “planned plane position” is perpendicular to the optical axis set in the optical system with a certain width in the existing range. It is assumed that it is determined as a surface.
- the “equivalent in-focus plane” is an optically equivalent position to such an in-focus plane and takes into account optical characteristics including aberrations of all optical elements interposed in the middle, manufacturing and assembly errors.
- the optical axis is determined to be a plane perpendicular to the optical axis equivalent to the optical axis that can also be predetermined with respect to the plane to be focused, at an optically equidistant position corresponding to the existence range of the plane to be focused.
- the "luminance information" indicates the obtained sensor signal information itself.
- signal information for each color band obtained by each color filter for example, signal information for each of R, G, and B may be used! It may be single signal information obtained by combining.
- the signal information itself is also area-type sensor force.General image information that has acquired two-dimensional arrangement, one-dimensional rearrangement of this two-dimensional image information, and line-type sensor force There is no restriction on the format of the signal information, such as the acquired one-dimensional thing, the image sensor itself is one segment and the information of one point.
- a single-lens reflex digital camera as an imaging device using a focus information acquisition detection device has an interchangeable lens 12 detachably attached to a camera body 10.
- the interchangeable lens 12 is composed of multiple lenses, lens groups, apertures, lens barrels, etc., and can adjust the focal length, focusing lens position, light amount, etc. It is something.
- such a configuration of the interchangeable lens 12 is illustrated by exemplifying only the focusing lens 14 for simplification, and other illustrations are omitted.
- a part of the quick return mirror 18 is a transmission mirror, and a part of the subject light transmitted through this light transmission part is reflected by a total reflection type sub mirror 24 and is transmitted to a transmission type mirror 26.
- the light beam transmitted through the transmission mirror 26 is imaged on the main luminance information acquisition sensor 30 arranged on the first equivalent focusing surface 28-1.
- the light beam reflected by the transmission mirror 26 passes through the second equivalent focusing surface 28-2, and is located on the non-subject side from the equivalent focusing surface on the optical path. Imaged at 32.
- an appropriate calculation is performed by a calculation unit (not shown), so that a command for moving the focusing lens position of the focusing lens 14 to the focusing position is obtained. A value is generated.
- At least two pieces of focus determination image luminance information 100 of the same part P of the same subject are captured by an imaging parameter that affects the blurred state of the captured image 102. Obtained by changing at least one parameter.
- the photographing parameters include a focusing lens position, an aperture amount, a focal length, and the like.
- the description will be limited to a case where only the optical path length between the plane to be focused and the object is changed.
- the focusing lens 14 is moved to prescribed first and second locations in order to change the optical path length between the plane to be focused and the subject.
- Step S10A, step S10B) to obtain the first and second image luminance information, respectively step S12A, step S12B.
- Each of the acquired images is subjected to normalization processing such as image magnification and luminance distribution (steps S14A and S14B), and if necessary, selects an area in the acquired image information for which focus determination is to be performed (step S14A).
- S16A, step S16B The selection is made for one of the image information, and the corresponding area is selected for the other image information.
- a preprocessing operation such as smoothing for calculating a spread parameter is performed on the focus determination area of the selected first and second image information (steps S18A and S18B).
- the spread parameter of the captured image in the present method is calculated by integrating the two preprocessing calculation results (step S20). It should be noted that a database corresponding to the spread parameter and the focusing lens position at which the focus state can be obtained for the spread parameter is obtained in advance. Therefore, by referring to the obtained spread parameters in this correspondence database, a movement command value of a focusing lens driving actuator (not shown) for obtaining a focused state is generated (step S22). ).
- the sensors by arranging the sensors as shown in FIG. 1 and FIG. 2, at least one of the images for acquiring the focusing information is to be focused on the plane to be focused (the first equivalent focusing scheduled). Since it is obtained on the surface 28-1), the first and second image luminance information can be obtained only by one imaging without moving the focusing lens 14, and a good focus determination can be made.
- the above-described sensor arrangement is effective when the imaging sensor 16 has more space than the thickness of the bottom floor of the camera dark room.
- a simple design change is performed to add the front focus state to the first equivalent focusing target plane 28-1. It is possible to dispose the luminance information acquiring sensor 32 and dispose the main luminance information acquiring sensor 30 on the second equivalent focusing expected plane 28-2.
- the transmittance may be any value, such as 33% or 66%, depending on the algorithm or processing. Good transmittance. No restrictions are placed on the transmittance.
- the reflection optical system is provided on the optical path for acquiring the focus information.
- an arbitrary optical element such as a concave lens, a convex lens, and an ND filter may be interposed.
- the main and sub luminance information acquiring sensors 30 and 32 are, for example, an area CCD of about 640 ⁇ 480 pixels or an area readable CMOS sensor, or a dedicated sensor in which a plurality of line sensors are arranged in an island shape.
- Various forms are possible. Further, those specialized for color, black and white, infrared wavelength, and ultraviolet wavelength may be used. There is no restriction on the type of sensor.
- the acquired sensor information is used as it is as luminance information.
- a color sensor for example, among the R, G, and B luminance information, only the G component is used. It may be used as information, or luminance information may be obtained by combining R, G, and B at a fixed ratio.
- the main and sub luminance information acquisition sensors 30, 32 are respectively provided on the respective planes 28-1 and 28-2, which are to be equivalently focused, with normals set on the respective planes. It is also possible to arrange so that the direction is oblique. It is desirable to arrange so as to face in the same direction from the viewpoint of uniform light reception.
- the inclinations of the equivalent focusing expected surfaces 28-1 and 28-2 are determined. Can be adjusted according to the sensor arrangement space. If the equivalent focal planes 28-1 and 28-2 are designed to be perpendicular to each other, the default force for the positional relationship between the primary and secondary luminance information acquisition sensors 30, 32 is easy to manufacture, with high accuracy, and Assembly is easily possible.
- the spread parameter is calculated with higher accuracy on the in-focus plane where the final focus state is obtained. There is a need. If the blur amount is too large, the accuracy of the spread parameter calculation will decrease due to the algorithm.
- the focus information acquiring detection device and the imaging device according to the present embodiment use one of the plurality of focus information as information on the plane to be focused. Therefore, it is easy to limit the spread parameter information to an appropriate range, and as a result, it is possible to reach the focused state most efficiently without causing a breakdown in the calculation. Also, the brightness information required for focus determination is the most narrowed down on the plane to be focused!
- the AF coverage area on the imaging surface is the same, the sensor area and size required for acquiring luminance information can be small. This effect is the same even on the plane to be equivalently focused, so that it is possible to provide a focus information acquisition detection device and an imaging device that can be compactly mounted as a whole.
- the sensor placement margin for obtaining the focus information on the non-subject side with respect to the main luminance information obtainment position is effectively used, and the amount of focus with respect to the focusing lens is monotonically changed without an inflection point. Therefore, there is no need for situational measures to select the correct solutions that exist when referencing the database.
- the luminance information of a plurality of images having different blurs can be easily acquired due to the different optical path lengths.
- the sensor arrangement as shown in FIG. 2 can be variously changed according to the shape of the part or the vignetting state of the light beam.
- the sensor 32 for acquiring the sub-brightness information may be arranged on the subject side from the second equivalent in-focus plane 28-2 on the optical path. Such an arrangement is effective when there is no sensor arrangement allowance on the imaging sensor 16 side.
- the focus information acquiring detection device when the focusing information acquisition detecting device is installed in the imaging device, the planned focusing surface or the planned focusing surface provided in the imaging device is provided. If the location of the focus information acquisition detection device around the optically equivalent position is possible without the problem of space and vignetting on the subject side in the vicinity of the optically equivalent position, use the extra space on the subject side to combine A focus information acquisition detection device can be installed.
- the sensor arrangement margin for obtaining focus information on the subject side with respect to the main luminance information obtainment position is effectively used, and the amount of focus with respect to the focusing lens increases or decreases monotonically. It is easy to select the correct solution when referring to the database.
- only one sub-luminance information acquisition sensor 32 is provided, but the number of the sub-luminance information acquisition sensors 32 may be two or more.
- the second equivalent in-focus plane 28 — A transmission type mirror 34 is further arranged rearward from 2 so that the transmitted light has an optical path length different from that of the first sub-brightness information acquisition sensor 32-1, and the reflected light has an optical path length different from the first sub-brightness information acquisition sensor 32-1
- the second sub-brightness information acquisition sensor 32-2 is arranged at the position.
- both the sub-brightness information acquisition sensors 32-1 and 32-2 are arranged on the optical path closer to the non-subject side than the second equivalent in-focus plane 28-2.
- the second equivalent focal plane 28-2 on the optical path, such as all on the subject side, at least one on the subject side, at least one on the non-subject side, and all on the non-subject side. It is possible.
- the difference in the blur state is small due to the presence of a plurality of luminance information acquisition positions, and sometimes the blur state is smaller than the combination of images with a further difference. If the difference between the states is too large, it is possible to select a combination of images having a larger difference, and as a result, it is possible to calculate a robust spread parameter with respect to external light, the situation of the subject, and the like.
- a combination of a plurality of sensor information for obtaining sub-brightness information and sensor information for obtaining main brightness information usually increases monotonously.
- focus information is obtained in a wide adjustment range using spread parameter characteristics having a monotonous decreasing tendency.
- the two closest sub-brightness information acquisition sensors sandwiching the main brightness information acquisition sensor are used. This makes it possible to acquire highly accurate focusing information.
- Such a configuration is advantageous when there is enough room to arrange many sub-luminance information acquisition sensors on the subject side.
- the combination of the plurality of sub-brightness information acquisition sensor information and the main luminance information acquisition sensor information is usually used. Focus information is acquired in a wide adjustment range using spread parameter characteristics that have a monotonically increasing or monotonically decreasing tendency. Then, at the stage of approaching the true focus state, it is possible to obtain highly accurate focus information by using the two closest sub-brightness information acquisition sensors with the main brightness information acquisition sensor in between. Become. Such a configuration is preferable when there is room to arrange many sub-luminance information acquisition sensors on the non-subject side.
- a part of the subject light is set on the first equivalent focusing expected plane 28-1 via the sub mirror 24. It is configured to be guided to the obtained main luminance information acquisition sensor 30.
- the focusing lens 14 is moved back and forth to change the optical path length in order to obtain a plurality of pieces of image luminance information having different blur states.
- the first equivalent focusing surface 28-1 is moved forward and backward along the optical path with respect to the main luminance information acquisition sensor 30 toward the subject side and the non-subject side. I do. That is, the main luminance information acquisition sensor 30 can be used as the same as the sub luminance information acquisition sensor 32 in FIG. 5 in the case of FIG. 8B, and the sub luminance information acquisition sensor in FIG. 2 in the case of FIG. 8C. It can be used as an equivalent to the sensor 32. Therefore, by acquiring the image luminance information when the focusing lens 14 reaches a predetermined position, the focus determination information described above is acquired.
- the focusing information can be acquired by installing one sensor specially developed for acquiring the focusing information, which is useful for saving power and space at a low cost.
- the focus information acquiring detection device as shown in FIG.
- the imaging sensor 16 is used as a degree acquisition sensor.
- a light transmissive mirror is used as the submirror 24 'used in this configuration.
- the light beam reflected by the sub-mirror 24 ' is guided to a sub-brightness information acquisition sensor 32 installed on the subject side with respect to the equivalent focusing surface 28 on the optical path.
- the light beam transmitted through the sub-mirror 24 ' is guided to the image sensor 16 which also serves as a main luminance information acquisition sensor.
- the sub-brightness information acquisition sensor 32 and the imaging sensor 16 can acquire luminance information having different blur states at the same time, and can achieve focusing by adding one luminance information acquisition sensor to the camera. Information can be obtained.
- a shirt (not shown) needs to be opened at least for an imaging area.
- sub-brightness information acquisition sensor 32 may be installed on the non-subject side with respect to the equivalent focusing surface 28 along the optical path.
- the focus information acquiring detection device since the imaging device of the imaging device is used, it is not necessary to separately provide a focus determination image acquisition sensor. Space saving and low cost can be realized. Also, since the focus is determined at the position where the image is to be taken, a highly accurate focused state can be obtained.
- the focus information acquisition detecting device uses only the image sensor 16 as a sensor for acquiring main luminance and sub-luminance information, and has a quick transmissivity having an overall transparency.
- the return mirror 18 ' is arranged.
- the focus cinder lens 14 is moved back and forth in parallel to the optical axis to change the optical path length and to take an image.
- the initial position of the imaging sensor 16, which is the plane to be focused along the optical path moves back and forth to the subject side and the non-subject side along the optical path with respect to the imaging sensor 16.
- moving the focusing lens 14 enables the imaging sensor 16 to acquire images with different blur states as described with reference to FIGS. 8A to 8C. Is the same as
- the quick return mirror 18 ′ Since the quick return mirror 18 ′ has transparency, the quick return mirror 18 ′ does not And sub-brightness information. Therefore, it is possible to acquire focusing information while securing image observation with the optical viewfinder. It is also possible to take an image as it is with the second release after securing the in-focus state with the quick return mirror 18 'lowered with the first release, and the quick return mirror 18' with the second release. It is possible to secure a sufficient amount of light and capture an image. If the quick return mirror 18 'cannot be flipped up, it functions effectively when capturing a high-speed subject with no delay in the quick return mirror's flip-up at the second release and no recoil.
- a low-cost, high-performance focusing system can be configured because there are few components that do not use the dedicated sensor.
- the sensor imaging area since there is no restriction on the sensor imaging area from the viewpoint of a submirror of a designable size, it is possible to set a focus determination area for the entire area of the imaging sensor.
- the focus information acquisition detection device includes a focus sensor optical system 36 and a focus sensor 38. Then, usually, they are used to determine the focus by the conventional phase difference detection method.
- the focus determination of the conventional phase difference detection method is disclosed in the above-mentioned Japanese Patent Publication No. 3-52607. That is, as shown in FIG. 12, the light beam emitted from the subject passes through the focusing lens 14, the equivalent focusing expected surface 28, the condenser lens 36 A, the pupil dividing lenses 36 B, 36 C arranged with parallax, An image is finally formed on a focus sensor 38 which also has a force such as a plurality of line CCDs via a focus sensor optical system 36 which also has a force such as a field mask (not shown).
- the expected value of the phase difference information at the time of focusing of the subject image signal obtained by the focusing sensor 38 via the pupil dividing lenses 36B and 36C, and the phase difference information actually acquired The movement command value of the focusing lens 14 until the image picked up by the image sensor 16 is brought into the focused state is calculated from the difference.
- the focus information is acquired as in the fourth embodiment by switching the mode. That is, the quick return mirror 18 is flipped up and the position of the focusing lens 14 is moved back and forth in parallel with the optical axis, so that the image sensor 16 acquires the main and sub luminance information.
- the initial position of the imaging sensor 16, which is the plane to be focused moves back and forth to the subject side and the non-subject side along the optical path with respect to the imaging sensor 16. Therefore, it is the same as in FIGS. 8A to 8C that images having different blur states can be acquired by the imaging sensor 16 and the focus sensor 28 for detecting a phase difference.
- a fixed light-transmitting mirror may be used instead of the quick-return mirror 18 'having overall transparency.
- the focus information acquisition detection device uses the actuator 40 having the camera shake prevention function to move the image sensor 16 in a direction parallel to the optical axis. It is characterized by having a degree of freedom to move. As a result, a plurality of images having different blur states can be captured by a slight modification of the camera shake prevention function actuator 40 and the drive circuit without moving the forcing lens 14.
- an electrostatic actuated actuator disclosed in JP-A-2001-9796 and JP-A-2001-9797 is used. can do. That is, if a large number of such electrostatic actuators are arranged on the surface and the imaging sensor 16 is supported, the imaging sensor 16 is moved substantially horizontally in the plane from the initial position plane of the imaging sensor 16 and is moved relative to the plane. It is also possible to move back and forth in a vertical direction. As a result, as shown in FIGS. 14A to 14C, the imaging sensor 16 is moved to the subject side and the non-subject side with respect to the equivalent focusing expected plane and the expected focusing plane which are the initial positions of the imaging sensor 16. Becomes possible.
- the moving sensor 16 by moving the image sensor 16, the luminance information having different blur states is obtained.
- an actuator to the main luminance information acquisition sensor 30 in FIG. 7, the same function can be realized by moving back and forth along the optical path. It is possible.
- the moving sensor is not limited.
- the focus information acquiring detection device by providing one luminance information acquiring sensor, it is possible to determine the focus, which leads to space saving.
- the present invention is not limited to the application to the digital single-lens reflex camera as described in the above embodiments, a non-digital camera, a compact digital camera without an interchangeable lens, a quick return mirror, etc., a microscope It can be diverted to a focus information acquisition detection device of any type of imaging device such as an endoscope and a telescope.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Optics & Photonics (AREA)
- Studio Devices (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004100435A JP2005284133A (ja) | 2004-03-30 | 2004-03-30 | 合焦情報取得用検出装置及びそれを用いた撮像装置 |
JP2004-100435 | 2004-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005098502A1 true WO2005098502A1 (ja) | 2005-10-20 |
Family
ID=35125222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/004997 WO2005098502A1 (ja) | 2004-03-30 | 2005-03-18 | 合焦情報取得用検出装置及びそれを用いた撮像装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2005284133A (ja) |
WO (1) | WO2005098502A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007139894A (ja) * | 2005-11-15 | 2007-06-07 | Olympus Corp | 撮像装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002296493A (ja) * | 2001-03-30 | 2002-10-09 | Fuji Photo Optical Co Ltd | ピント状態検出装置 |
JP2002365710A (ja) * | 2001-06-04 | 2002-12-18 | Fuji Photo Optical Co Ltd | ピント表示装置 |
JP2003279846A (ja) * | 2002-03-25 | 2003-10-02 | Fuji Photo Optical Co Ltd | 撮影レンズのピント状態検出装置 |
JP2003295050A (ja) * | 2003-03-03 | 2003-10-15 | Fuji Photo Optical Co Ltd | ピント状態検出装置 |
-
2004
- 2004-03-30 JP JP2004100435A patent/JP2005284133A/ja not_active Withdrawn
-
2005
- 2005-03-18 WO PCT/JP2005/004997 patent/WO2005098502A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002296493A (ja) * | 2001-03-30 | 2002-10-09 | Fuji Photo Optical Co Ltd | ピント状態検出装置 |
JP2002365710A (ja) * | 2001-06-04 | 2002-12-18 | Fuji Photo Optical Co Ltd | ピント表示装置 |
JP2003279846A (ja) * | 2002-03-25 | 2003-10-02 | Fuji Photo Optical Co Ltd | 撮影レンズのピント状態検出装置 |
JP2003295050A (ja) * | 2003-03-03 | 2003-10-15 | Fuji Photo Optical Co Ltd | ピント状態検出装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2005284133A (ja) | 2005-10-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101395015B1 (ko) | 카메라, 초점 검출방법, 및 제어방법 | |
JP5901246B2 (ja) | 撮像装置 | |
JP5168798B2 (ja) | 焦点調節装置および撮像装置 | |
JP5168797B2 (ja) | 撮像装置 | |
JP4972960B2 (ja) | 焦点調節装置および撮像装置 | |
JP2007248782A (ja) | 焦点調節装置およびカメラ | |
JP2010026177A (ja) | 位相差検出装置、撮像装置、位相差検出方法、位相差検出プログラム | |
JP4054422B2 (ja) | カメラ及び交換レンズ装置 | |
JP5164707B2 (ja) | 位相差検出装置、撮像装置、位相差検出装置の信号レベル補正方法、信号レベル補正プログラム | |
JP2010160312A (ja) | 可視光・赤外光撮影用レンズアダプタ | |
JP4708970B2 (ja) | 焦点検出装置及び当該焦点検出装置を有する撮像装置 | |
JP2006197406A (ja) | 撮像装置 | |
JP5850627B2 (ja) | 撮像装置 | |
JP2617965B2 (ja) | 一眼レフレックスカメラのファインダー光学系 | |
JP6271911B2 (ja) | 撮像装置及びその制御方法、デフォーカス量算出方法 | |
JP5157073B2 (ja) | 焦点調節装置および撮像装置 | |
US6477327B1 (en) | Camera having image pick-up device | |
JP4125176B2 (ja) | デジタルカメラ付地上望遠鏡 | |
JP2010102281A (ja) | 可視光・赤外光撮影用レンズアダプタ | |
WO2005098502A1 (ja) | 合焦情報取得用検出装置及びそれを用いた撮像装置 | |
JP2015034859A (ja) | 自動焦点調節レンズ装置および撮影装置 | |
WO2005098500A1 (ja) | 合焦情報取得用検出装置及びそれを用いた撮像装置 | |
JP2017219791A (ja) | 制御装置、撮像装置、制御方法、プログラム、および、記憶媒体 | |
JP2005284134A (ja) | 合焦情報取得用検出装置及びそれを用いた撮像装置 | |
JP2756413B2 (ja) | 視線検出装置を備える光学装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |