WO2004097494A1 - デジタルカメラ付地上望遠鏡 - Google Patents
デジタルカメラ付地上望遠鏡 Download PDFInfo
- Publication number
- WO2004097494A1 WO2004097494A1 PCT/JP2004/006320 JP2004006320W WO2004097494A1 WO 2004097494 A1 WO2004097494 A1 WO 2004097494A1 JP 2004006320 W JP2004006320 W JP 2004006320W WO 2004097494 A1 WO2004097494 A1 WO 2004097494A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- optical path
- imaging
- half mirror
- optical axis
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
- G02B23/04—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors for the purpose of beam splitting or combining, e.g. fitted with eyepieces for more than one observer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0875—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
Definitions
- the present invention relates to a terrestrial telescope with a digital camera using an optical path splitting means for splitting an optical path into an image pickup device and an observation optical system.
- Terrestrial telescopes with a magnification of about 20 to 60 times are widely used to observe wild animals such as wild birds.
- a terrestrial telescope consists of a Galilean telescope consisting of a positive (convex) lens and a negative (concave) lens that functions as an erecting system, or a Kepler system consisting of only a positive (convex) lens. It is known to add a prism or the like as an erecting system to the basic configuration of a telescope.
- a terrestrial telescope is one that is configured so that a user can observe an erect image.
- the applicant has disclosed a configuration of a terrestrial telescope with a digital camera capable of observing a clear and bright image for observing an aerial image, even though the system is already capable of capturing an observation image. 0 0 3 2 4 8 2 6 6).
- Patent Document 1 The structure of the terrestrial telescope with a digital camera in Patent Document 1 is similar to the structure of a general single-lens reflex digital camera except for the structure of the observation optical system.
- the quick return mirror is used.
- single-lens reflex digital cameras unlike silver-salt single-lens reflex cameras, use the light flux transmitted through the photographic lens for the optical path between the observation optical system and the image sensor.
- a structure in which a fixed eighteenth mirror for splitting is used as an optical path splitting unit has the advantage that the imaging device can always be imaged for monitor display, autofocus processing, exposure calculation, etc., and the structure can be made very simple and inexpensive because a movable mirror is not used. There is a problem that light loss cannot be avoided.
- Patent Document 2 Japanese Unexamined Patent Application Publication No. 2000-162495
- the quick mirror is a half mirror that guides the device. This half mirror is always located at the observation position that guides a part of the luminous flux of the subject to the observation light system, and is controlled to retreat from the imaging optical path during shooting.
- Patent Document 2 when the half mirror is at the observation position, the objective lens is focused on the subject when the half mirror is retracted by the photoelectric conversion output of the subject light beam incident on the image sensor via the eighty-one mirror when the half mirror is at the observation position. The position is calculated and stored, and when the half mirror is actually retracted to the shooting position, the objective lens is moved to the calculated focusing position to focus.
- Patent Document 2 has an advantage that loss of light quantity at the time of photographing a subject can be prevented, and furthermore, when the half mirror is retracted, the defocus of an image incident on the image sensor can be corrected by moving the photographing lens.
- a processor and a memory for calculation and storage of focusing are required, and the manufacturing cost is increased.
- An object of the present invention is to solve the above-mentioned problems, to constantly perform imaging of an imaging device, to eliminate the loss of light quantity at the time of shooting, and to correct the focus position of the imaging device with a simple and inexpensive configuration. Is to do.
- an objective lens group an imaging element disposed behind the objective lens group and constituting an imaging optical system together with the objective lens group, and the objective lens as optical path dividing means.
- a retractable optical path dividing unit disposed between a group and the image pickup device, an observation optical system for observing a light image divided outside the optical path of the imaging optical system by the optical path dividing unit, and the optical path division
- the optical element that corrects a change in the imaging position accompanying the retraction of the optical path division unit in conjunction with the retraction of the optical path division unit is replaced with the imaging optical system.
- a configuration in which an imaging position correcting means inserted into the optical axis of the optical disk is provided was adopted.
- the optical element is a flat glass having a thickness that corrects a change in the imaging position in the optical axis direction accompanying the retreat of the optical path dividing unit.
- the imaging position correcting means is provided with a guide lever member supporting the optical path dividing means at one end and the optical element at the other end, so that the optical path dividing means is retracted and the optical element is retracted.
- a configuration for controlling import is adopted.
- the transmission surface of the optical path splitting unit from an inclined plane inclined with respect to the reflection surface of the optical path splitting unit, the center optical axis of the image sensor with respect to the image sensor when the optical path splitting unit is inserted and when the optical path splitting unit is separated therefrom is formed.
- a configuration that corrects the imaging position shift in the direction crossing the optical axis due to the shift was adopted.
- a configuration is adopted in which the optical path dividing means is a half mirror.
- FIG. 1 is an explanatory view showing the overall configuration of a ground telescope with a digital force lens according to a first embodiment of the present invention
- FIG. 2 is a diagram showing the main optical system during observation with the apparatus of FIG.
- FIG. 3 is an explanatory view showing an inserted QR half mirror
- FIG. 3 is an explanatory view showing a flat glass inserted into a main optical system at the time of imaging in the apparatus of FIG. 1
- FIG. FIG. 5 is a table showing the amount of image shift caused by the quick return half mirror of the apparatus of FIG. 1 and the calculation result of the thickness of the flat glass for correcting the image shift.
- FIG. 5 shows the second embodiment of the present invention.
- FIG. 1 is an explanatory diagram showing a configuration of a main part of a terrestrial telescope with a digital camera according to an embodiment.
- FIG. 1 shows a configuration of a main part of a terrestrial telescope with a digital camera employing the present invention.
- the luminous flux transmitted through the objective lens group 1 consisting of the fixed lens group 1a and the movable force lens group 1b is always the main optical axis (the optical axis of the objective lens group 1).
- a quick return mirror hereinafter abbreviated as a QR half mirror 2 arranged so as to intersect at an angle of.
- the movable focus lens group 1 b is held by a lens frame 17, and can be moved in the main optical axis direction by an AF camera 16.
- the luminous flux transmitted through the QR half mirror 2 is incident on an image sensor (CCD, CMOS image sensor, etc.) 3 placed on the focal plane.
- image sensor CCD, CMOS image sensor, etc.
- the light beam reflected by the QR half mirror 2 enters the observation optical system, and is conjugated with the focal plane via a pen-and-eye roof prism (not shown) or an erecting optical system combining the reflection mirror 4 and the relay lens 5.
- An aerial image is formed at the position of the focusing screen 6 placed at the position. The user sets this image upright through the eyepiece 7. It can be observed as an image.
- the reflectivity of the QR half mirror 2 is arbitrary. For example, if the reflectivity of the QR half mirror 2 is set to about 80% to 90% and the amount of light directed to the observation optical system is set to be larger, the user can easily observe.
- the QR 81 mirror 2 is fixed to a mirror holder 18a provided at one end of a mirror guide lever 18 made of metal, plastic, or the like.
- the mirror guide lever 8 is rotatably supported on the rotation shaft 12, and a flat glass holder 18 b is provided at the end of the mirror guide lever 8 opposite to the rotation shaft 12.
- the flat glass 9 is fixed to the flat glass holder 8b.
- the transmittance of the flat glass 9 is approximately 100%.
- the QR half mirror 2 and the flat glass 9 are 90.
- the holders 8a and 8b are held so as to form an angle of.
- a tension spring 10 is stretched on the mirror holder 8a, and the tension spring 10 rotates the mirror holder 8a and the QR half mirror 2 around the rotation axis 12 clockwise (in the figure). (To retract from the optical path for shooting).
- the QR half mirror 2 is set at 45 with respect to the main optical axis against the tension of the tension spring 10. It is the regulating lever 11 that is positioned at the angle of. A notch 11b is provided at the tip of the horizontally illustrated side arm of the regulating lever 11 and the notch 11b engages with a pin 8c implanted in the mirror guide lever 8. I have.
- the restricting lever 11 is L-shaped and is rotatably supported at its bent portion on a rotating shaft 11a so that a user can perform a photographing operation during observation (not shown). Sole linked with) Maintain the position of the solid line by means of a node or other mechanical means.
- the QR half mirror 2 is 45 with respect to the main optical axis. Hold the position of.
- the holding of the regulating lever 11 is released, and the mirror guide lever 8 is rapidly rotated clockwise by the urging force of the tension spring 10.
- the mirror holder 18a and the QR half mirror 2 move to the positions indicated by the dotted lines, respectively.
- the QR half mirror 2 and the flat glass 9 are exactly 90 as described above.
- the QR half-mirror 2 moves to the horizontal position as indicated by the dotted line
- the flat glass 9 moves 90 ° with respect to the optical axis of the objective lens group 1 because the mirror holders 8a and 8b are held by the mirror holders 8a and 8b. .
- the robot moves to a position where it is inserted immediately before the image sensor 3.
- the position of the flat glass 9 (the QR half mirror 2) at the time of this photographing is determined by the locking of the flat glass holder 18 b on the stopper 15.
- the entire amount of light transmitted through the objective lens group 1 reaches the image sensor 3, and a light image of a subject enters the image sensor 3 without loss of light by the QR half mirror 2.
- the image sensor 3 is driven by a CCD driver 13, and an image output of the image sensor 3 is input to a control circuit 14 including a microprocessor, a memory, and the like via the CCD driver 13.
- the control circuit 14 records the image data obtained from the image sensor 3 at the time of photographing on a recording medium (not shown) such as a memory card.
- a recording medium not shown
- Monitor display on the display unit auto focus processing (AF Processing such as control of the movable focus lens group 1b via 6), exposure calculation (exposure amount control by half-pressing the release button, etc.) can be executed.
- AF Processing such as control of the movable focus lens group 1b via 6
- exposure calculation exposure amount control by half-pressing the release button, etc.
- the circuit 14 detects the brightness based on the photoelectric conversion output of the subject light beam incident on the imaging device 3 via the QR half mirror 2, and detects the contrast by a known contrast detection method.
- the control circuit 14 determines the electronic shutter opening time of the image sensor 3 according to the detected brightness of the subject light flux, and drives the AF module 16 according to the detected contrast information. Then, the autofocus control can be performed by moving the movable focus lens group 1b held by the lens frame 17 in the optical axis direction. That is, the control circuit 14 drives the AF motor 16 so that the contrast of the image captured by the image sensor 3 is maximized in accordance with a change in the contrast of the subject imaged on the image sensor 3. Move the focus lens group 1 b to the focus position.
- the focus position at this time is based on the photoelectric output of the subject light image transmitted through the QR half mirror 2 and incident on the image sensor 3, when the QR half mirror 2 is flipped up and retracted, the flat glass If 9 is not inserted, the in-focus position at that time will be different.
- the position of the image formed through the QR half mirror 1 2 having the thickness d is A, the QR half mirror 2 and the flat glass 9
- the deviation of the imaging position (B-A) when there is no QR half-mirror 2 and when there is neither QR half-mirror 2 nor flat glass 9 in Fig. 2 is the center light 10 on the optical axis and the peripheral light 1 1 Focusing on the movement of the imaging position due to, this geometric relationship can be expressed by the following equation (1).
- the refractive index of the glass (or other suitable material) of the QR half mirror 12 is n
- the incident angle of the central light 10 on the QR half mirror 12 is 45.
- the incident angle of the ambient light 1 1 to the QR half mirror 2 is ⁇ . a ⁇ / 2 ⁇ 2 -1-1. Ha,. cos 0 sin0 ⁇ ,
- the deviation ⁇ of the imaging position formed by the central light 10 and the peripheral light 11 at this time is as follows.
- the refractive index n 'of the flat glass 9 (the same value of n as above can be used if the flat glass 9 and the glass of the QR 181 mirror 2 are the same), below the thickness d' of the flat glass 9 It can be approximated as in equation (2) above.
- ⁇ d '(l-—) (2)
- n 'equation (2) is derived from Snell's law and geometrical considerations. As shown in Fig. 3, when the plane glass 9 is inserted so as to intersect the optical axis at 90 °, The term related to the incident angle 0 «of the ambient light 11 in FIG. 3 as shown in equation (2) can be ignored as a small term, and the image shift amount ⁇ is the thickness d ′ of the flat glass 9 and its refractive index n Is determined by
- Figure 4 shows the result of this calculation.
- the shift amount ⁇ of the image to be corrected depends on the incident angle 0 of the ambient light 11 in FIG. 2, and is not constant. QR half mirror 2 4 5.
- the amount of shift in the optical axis direction due to the correction glass is, as is clear from equation (2), Not affected by ⁇ .
- the central field of view is more important than the peripheral area. (Close to °)
- the calculation result of the nearest neighbor is used, that is, 1.77 mm is used as the thickness d ′ of the flat glass 9 for eliminating the image shift.
- the effect of inserting the flat glass 9 can be evaluated as follows as compared with the case where the flat glass 9 is not provided.
- the image forming position that occurs when the QR half mirror 2 is inserted is shifted.
- the imaging position can be corrected by that amount. Therefore, even if the auto focus control conditions calculated during the introduction of the QR half mirror 2 are used as they are, the degree of image quality deterioration is reduced.
- the flat glass 9 is inserted perpendicularly to the optical axis, so that the effect of correcting the imaging position of the flat glass 9 is uniform for all photographing rays having various directions. (See the point that equation (2) does not depend on the incident angle of ambient light ⁇ '), and as shown in Fig. 4, image formation occurs depending on the direction of the side light involved in image formation. There is no degradation of the image due to the displacement of the image position during shooting.
- the change in the imaging position (focusing position) caused by the retreat of the QR half mirror 2 from the optical axis can be corrected by inserting the flat glass 9.
- the image sensor 3 captures a subject image for the electronic shutter release time determined when the release button is half-pressed.
- the control circuit 14 drives a drive mode (not shown) to return the QR half mirror 2 and the flat glass 9 to the standby position.
- the optical path splitting means QR half mirror 2
- the optical path splitting means by the half mirror is removed from the main optical system, and an optical element (flat glass 9) for correcting the shift of the imaging position caused by the optical path splitting means by the half mirror is inserted into the main optical system.
- an optical element flat glass 9 for correcting the shift of the imaging position caused by the optical path splitting means by the half mirror is inserted into the main optical system.
- the deviation of the focus position can be corrected by a very simple and inexpensive configuration using a simple optical element such as the flat glass 9 as the optical element.
- the imaging device can acquire imaging data for a predetermined purpose such as exposure adjustment, monitor display, and auto focus adjustment during the observation period. .
- the QR half mirror 2 and the flat glass 9 constituting the optical path splitting means are not held on separate levers, but are rigid one guide lever member (mirror guide lever). 8) are held at both ends, respectively.
- the mirror guide lever 8 positions the QR mirror 12 or the flat glass 9. For this reason, it is very easy and inexpensive to carry out with a small number of parts, the positioning error of the QR half mirror 2 or the flat glass 9 is extremely small, and there is an excellent effect that accurate imaging position correction can be performed.
- the QR half mirror 2 is 45 for ease of explanation.
- the angle of the flat glass 9 is 90.
- the angle between the QR half mirror 2 and the flat glass 9 is 90.
- the relative angle between the two can be set to an angle other than 90 ° depending on the configuration of the drive mechanism and the space in the device.
- the configuration has been described in which the flat glass 9 is inserted at the time of shooting when the QR half mirror 2 is retracted, and the imaging position shift ⁇ in the optical axis direction is corrected.
- what can be corrected by inserting the flat glass 9 is the imaging position shift d in the optical axis direction, and the shift of the imaging optical axis is not considered.
- the insertion of the QR half-mirror 12 at an angle causes an imaging position shift ⁇ in a direction (perpendicular) crossing the optical axis, but the configuration shown in the first embodiment This alone cannot correct this imaging position shift ⁇ .
- the transmission surface of the QR half mirror as an optical path splitting means is constituted by an inclined plane inclined with respect to the reflection surface (semi-transmission surface). Is shown.
- a structure in which the transmission surface as the optical path splitting means is constituted by an inclined plane inclined with respect to the reflection surface (semi-transmission surface) is, for example, a vertical cross-sectional shape of the QR 81 mirror 18 shown in FIG. It should be shaped like a cross section.
- the configuration in FIG. 5 will be described as a second embodiment, but in the following description, the configuration other than FIG. 5 is the same as in the first embodiment.
- the same or corresponding components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
- the QR half mirror 18 is supported by the mirror holder 8 together with the flat glass 9 as in FIG. 1 so that the QR half mirror 18 enters the optical path during observation, and the QR half mirror 18 retreats during shooting.
- the flat glass 9 is controlled to enter the optical path.
- the configuration shown in Fig. 5 is based on the fact that the light flux shifted by the law of refraction by the reflective surface (semi-transmissive surface) on the surface of the QR 81-mirror 18 It is characterized in that the image sensor 3 is returned to the vicinity of the center by tilting. As a result, during observation, the path of the light beam passing near the center of the It can be corrected to be almost the same as when the mirror 18 is not installed.
- the calculation method of the angle ⁇ formed by the transmission surface (inclined plane) on the back of the QR half mirror 18 with respect to the reflection surface (semi-transmission surface) of the surface of the QR half-mirror 18 at the angle of Fig. 5 is a schematic representation, and the scale is not taken into account.
- autofocus control is performed in the state shown in Fig. 5, but at this time, the above-mentioned calculation is applied only to ambient light near the optical axis. If it is set near the center of the imaging range of the imaging element 3, the autofocus processing can be performed in a state equivalent to the absence of a vertical shift of the imaging optical axis.
- the deviation of the imaging position along the optical axis is corrected by retracting the QR half mirror 18 at the time of photographing and inserting the flat glass 9 configured in the same manner as in the first embodiment.
- the QR half mirror 18 retreats from the optical axis, the image forming position shifts by ⁇ from the image sensor 3 in the optical axis direction, but the image forming position is shifted by inserting the flat glass 9 perpendicularly to the optical axis. Is corrected so as to be on the image sensor 3 with the above.
- the thickness of the correction glass 9 may be 1.77 mm, which is the same as that when a flat QR half mirror is used.
- the wedge-shaped optical path splitting means (QR half mirror 18) as shown in FIG. 5 is a half mirror, which is formed by shaping a material such as glass, and providing a reflection Z transmission / filter characteristic. Can be manufactured relatively easily and inexpensively (similarly for the QR half mirror 2 of the first embodiment).
- an objective lens group, an imaging element disposed behind the objective lens group and constituting an imaging optical system together with the objective lens group, and the objective lens as optical path dividing means A retractable optical path dividing unit disposed between a lens group and the image pickup element; an observation optical system for observing a light image divided outside the optical path of the imaging optical system by the optical path dividing unit; and the optical path dividing unit.
- an optical element that corrects a change in an imaging position caused by the retraction of the optical path dividing unit in conjunction with the retraction of the optical path dividing unit is provided in the imaging optical system.
- the optical element can be made of flat glass having a thickness that corrects a change in the imaging position in the optical axis direction accompanying the retreat of the optical path splitting unit.
- a simple optical element is used.
- the deviation of the focus position can be corrected by using a very simple and inexpensive configuration.
- the flat glass is positioned with respect to an optical axis of the imaging optical system.
- the effect of correcting the imaging position of the flat glass can be applied evenly to all imaging rays having various directions, and autofocus control operates under the optimal conditions. It is possible to obtain an excellent effect that the image quality can be prevented from deteriorating.
- the transmission surface of the optical path splitting unit from an inclined plane inclined with respect to the reflection surface of the optical path splitting unit, the center optical axis of the image sensor with respect to the image sensor when the optical path splitting unit is inserted and when the optical path splitting unit is separated therefrom is formed.
- the optical path splitting means can be constituted by a half mirror. In this case, by shaping a material such as glass and applying a coating for giving reflection / transmission / filtration characteristics, it is relatively simple and inexpensive. Can be manufactured.
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- Optics & Photonics (AREA)
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- Astronomy & Astrophysics (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602004007129T DE602004007129T2 (de) | 2003-05-02 | 2004-04-30 | Mit digitaler kamera ausgestattetes teleskop |
EP04730724A EP1621913B1 (en) | 2003-05-02 | 2004-04-30 | Digital camera-equipped ground telescope |
US10/551,062 US20060203350A1 (en) | 2003-05-02 | 2004-04-30 | Digital camera-equipped ground telescope |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-126834 | 2003-05-02 | ||
JP2003126834A JP4125175B2 (ja) | 2002-11-25 | 2003-05-02 | デジタルカメラ付地上望遠鏡 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004097494A1 true WO2004097494A1 (ja) | 2004-11-11 |
Family
ID=33410354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/006320 WO2004097494A1 (ja) | 2003-05-02 | 2004-04-30 | デジタルカメラ付地上望遠鏡 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060203350A1 (ja) |
EP (1) | EP1621913B1 (ja) |
CN (1) | CN100350291C (ja) |
DE (1) | DE602004007129T2 (ja) |
WO (1) | WO2004097494A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010049134A (ja) * | 2008-08-25 | 2010-03-04 | Sony Corp | 撮像装置 |
JP5448715B2 (ja) * | 2009-10-22 | 2014-03-19 | キヤノン株式会社 | 撮像装置及びその制御方法 |
CN103792656A (zh) * | 2014-01-26 | 2014-05-14 | 中国科学院长春光学精密机械与物理研究所 | 适合白天目标观测的地基高分辨力红外成像望远镜 |
CN104635331A (zh) * | 2015-03-07 | 2015-05-20 | 杨向勇 | 一种分光式实时拍照望远镜 |
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JPS62237870A (ja) * | 1986-04-09 | 1987-10-17 | Les-The- Tec Kk | 撮像装置 |
JPH09281407A (ja) * | 1996-04-10 | 1997-10-31 | Olympus Optical Co Ltd | 双眼鏡 |
JPH09281595A (ja) * | 1996-04-10 | 1997-10-31 | Olympus Optical Co Ltd | カメラ |
JPH10294888A (ja) * | 1997-04-18 | 1998-11-04 | Asahi Optical Co Ltd | 一眼レフ式デジタルスチルカメラ |
JP2000019575A (ja) * | 1998-07-02 | 2000-01-21 | Olympus Optical Co Ltd | 防振機能付きカメラ |
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JPS55106424A (en) * | 1979-02-09 | 1980-08-15 | Ricoh Co Ltd | Single-lens reflex camera |
JPS57146229A (en) * | 1981-03-06 | 1982-09-09 | Canon Inc | Optical splitter |
US4682237A (en) * | 1984-05-07 | 1987-07-21 | Canon Kabushiki Kaisha | Photographic optical apparatus |
JPS6290087A (ja) * | 1985-10-15 | 1987-04-24 | Minolta Camera Co Ltd | 一眼レフレツクスタイプの電子スチ−ルカメラ |
US4943155A (en) * | 1987-12-22 | 1990-07-24 | Hughes Aircraft Company | Color projection system with a color correction wedge |
JP3465997B2 (ja) * | 1995-04-28 | 2003-11-10 | 株式会社ニデック | 眼底カメラ |
US6741284B1 (en) * | 1998-09-25 | 2004-05-25 | Pentax Corporation | SLR digital still camera |
JP2000162495A (ja) * | 1998-09-25 | 2000-06-16 | Asahi Optical Co Ltd | 一眼レフ式デジタルスチルカメラ |
US6643460B2 (en) * | 2000-01-27 | 2003-11-04 | Nikon Corporation | Camera and focal point detection apparatus |
US6407766B1 (en) * | 2000-07-18 | 2002-06-18 | Eastman Kodak Company | Method and apparatus for printing to a photosensitive media using multiple spatial light modulators |
US6822802B2 (en) * | 2002-11-25 | 2004-11-23 | Kowa Company Ltd. | Terrestrial telescope with digital camera |
JP4125141B2 (ja) * | 2003-01-22 | 2008-07-30 | 興和株式会社 | デジタルカメラ付地上望遠鏡 |
-
2004
- 2004-04-30 US US10/551,062 patent/US20060203350A1/en not_active Abandoned
- 2004-04-30 EP EP04730724A patent/EP1621913B1/en not_active Expired - Lifetime
- 2004-04-30 WO PCT/JP2004/006320 patent/WO2004097494A1/ja active IP Right Grant
- 2004-04-30 CN CNB2004800094836A patent/CN100350291C/zh not_active Expired - Fee Related
- 2004-04-30 DE DE602004007129T patent/DE602004007129T2/de not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62237870A (ja) * | 1986-04-09 | 1987-10-17 | Les-The- Tec Kk | 撮像装置 |
JPH09281407A (ja) * | 1996-04-10 | 1997-10-31 | Olympus Optical Co Ltd | 双眼鏡 |
JPH09281595A (ja) * | 1996-04-10 | 1997-10-31 | Olympus Optical Co Ltd | カメラ |
JPH10294888A (ja) * | 1997-04-18 | 1998-11-04 | Asahi Optical Co Ltd | 一眼レフ式デジタルスチルカメラ |
JP2000019575A (ja) * | 1998-07-02 | 2000-01-21 | Olympus Optical Co Ltd | 防振機能付きカメラ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1621913A4 * |
Also Published As
Publication number | Publication date |
---|---|
DE602004007129D1 (de) | 2007-08-02 |
DE602004007129T2 (de) | 2008-02-21 |
EP1621913A4 (en) | 2006-10-04 |
EP1621913A1 (en) | 2006-02-01 |
CN1771453A (zh) | 2006-05-10 |
CN100350291C (zh) | 2007-11-21 |
US20060203350A1 (en) | 2006-09-14 |
EP1621913B1 (en) | 2007-06-20 |
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