JP2005331923A - Optical device and photographing apparatus using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily switch between a direct observation by an naked eye and photographing by a camera in various kinds of optical equipment having an eye piece. <P>SOLUTION: By using an optical device having an eye piece part attachment holder 6 which is attached to an eye piece part 3 of the optical equipment 4 and a lens barrel 7 disposed such that an imaging lens can be moved in the optical axis direction, a virtual image of the distance of distinct vision is photographed by the camera or is observed by a monitor via a CCD. By making it possible to detachably attach the eye piece part attachment holder and the lens barrel by a one-touch attaching/detaching mechanism, it is possible to easily and quickly switch among an naked eye observation, a monitor observation and photographing by the camera. Especially, it is possible to eliminate continuous observation via a microscope which may hurt health and it is easy to switch the same to a naked eye observation of high accuracy. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an optical device for enabling an image viewed with an optical device having an eyepiece lens to be directly photographed by a camera and a photographing device using the same.

Conventionally, there are telescopes, binoculars, astronomical telescopes, riflescopes, rangefinders, etc. for the purpose of observing distant objects close and magnified, as viewed with the naked eye using eyepieces in optical equipment, There are further endoscopes such as a microscope and loupe for enlarging and observing a small object or an optical viewfinder of a camera for visually recognizing the field of view regardless of the size of the image. These are so-called clear distances (a distance of about 250 to 300 mm from the naked eye) by using an eyepiece to create an image or an object itself created by an optical system mounted on the object side to be observed from the eyepiece. In other words, the image is designed to be connected to a position that can be most easily observed by the human eye. Among these optical devices, for example, a camera device is connected to a surveying instrument so that an image can be displayed on a monitor for visual recognition and observation (see, for example, Patent Document 1).
JP 11-337336 A (page 4, FIG. 1)

  However, in the above optical apparatus, an eyepiece is used for visual observation and observation, and in order to photograph it with a camera, an optical system that refracts the optical axis for the camera as in the above document. There was a problem that the device became complicated, such as adding.

  In addition, there are several methods such as a so-called collimator method for taking an image through the eyepiece of each optical device described above, but a general ordinary camera other than a compact type digital camera (especially including a digital type). Many single-lens reflex cameras and video cameras add so-called clear vision distance to the shooting range. For this reason, the position of the eyepiece lens has been changed significantly so as not to interfere with the camera, or the eyepiece lens has been changed to be used for shooting in accordance with the camera. In particular, when observation with the naked eye is desired, such as bird watching, it will be changed to the shooting state as necessary while observing with the naked eye, but there is a problem that switching takes time and the shooting timing is lost. there were.

  Also, because the camera was combined and photographed using a device specially designed for each type of optical device, or a special connector that can be used only for that model, the versatility is low. There was a problem.

  Furthermore, microscopes are used in inspections for finding fine wrinkles in many fields. However, in the case of inspection with a microscope, human eyes are overworked, and long-time inspections are harmful. Furthermore, the work of performing the microscopic inspection is limited to about 3 years for the same person, and continuing for more than that may harm health. There is a strong desire to improve such problems, especially in the industry that requires microscopy.

  As a technique for avoiding the above-mentioned adverse effects caused by looking directly into the microscope, an enlarged image is projected on a monitor (CRT or liquid crystal monitor) using a video camera, and a wrinkle detection inspection is performed by the monitor. is there. According to this method, since an enlarged image on a visualized monitor can be observed in a normal state with both eyes, the degree of fatigue given to the eyes is almost zero compared to microscopic examination.

  However, in the case of inspection using a monitor, since the detection accuracy depends on the resolution of the monitor, the detection accuracy is inferior to that of microscopic inspection. For example, a wrinkle that can be clearly detected by microscopic inspection and can be judged as good or bad may be displayed in a slightly unclear state on the monitor. In this way, even in a monitor inspection that is easy to observe (inspect) at the present time and that does not affect the health of the eyes, it is necessary to consider the health of the eyes, but it is a microscopic inspection that enables high-precision inspection. Even if there are, there are advantages and disadvantages.

  In addition, there are differences in visual acuity among viewers such as myopia and hyperopia, and even the same person may have different visual acuity on the left and right. To cope with such differences in visual acuity, optics such as microscopes and telescopes are used. Some devices make it possible to adjust the position of the eyepiece in the direction of the optical axis (in the case of a microscope, the position of the objective lens may be adjusted). Thus, when the position of the eyepiece is adjusted due to the difference in visual acuity, a difference occurs in the distance of clear vision that is the position of the image formation (virtual image) visually recognized through the eyepiece. When taking a picture with a single-lens reflex camera including a digital type or projecting it on a monitor with a video camera (hereinafter referred to as "shooting with a camera unless otherwise noted"), the camera side corresponding to the adjusted eyepiece is used. It is necessary to align the position of the imaging surface (imaging surface of the film or image sensor), and it is necessary to adjust the position each time the camera is switched to the shooting state. There was a problem that the switching was complicated.

  By solving these problems, it is possible to easily switch between direct visual observation (observation) and photographing with a camera without requiring optical and mechanical adjustments for various optical devices having eyepieces. Therefore, in the present invention, an eyepiece mounting holder that is fixed to an optical device having an eyepiece at a position corresponding to the eyepiece by retrofitting, and the eyepiece mounting holder integrally. And a lens barrel that holds a photographic lens for forming an image that can be viewed with the naked eye through the eyepiece, and the camera is mounted on the lens barrel on the side opposite to the eyepiece mounting holder side. Camera mounting means for mounting, and the imaging lens to match the imaging point of the imaging lens in a state adjusted for visual recognition of the eyepiece lens with the imaging position of the camera A focus mechanism for adjusting the optical axis direction position of the assumed to be provided.

  In particular, a positioning mechanism for determining the position of the lens barrel in the optical axis direction with respect to the eyepiece lens between the eyepiece mounting holder and the lens barrel, and the eyepiece for maintaining the positioning state It is preferable that a one-touch attachment / detachment mechanism for coupling and releasing the part mounting holder and the lens barrel by a one-touch operation is provided. Further, it is preferable that the range of movement of the photographic lens in the optical axis direction by the focus mechanism is a range that can be focused on a subject from infinity to a very close distance shorter than the distance of clear vision.

  Alternatively, an eyepiece mounting holder that is fixed to an optical device having an eyepiece by retrofitting at a position corresponding to the eyepiece, and provided integrally with the eyepiece mounting holder and visually recognized through the eyepiece A lens barrel for holding a photographing lens for forming an image to be formed, and an imaging point by the photographing lens in a state in which the eyepiece is adjusted to be visually recognized by the naked eye on the lens barrel. In order to photograph the image formed by the photographing lens and output the image output to the monitor in an optical device provided with a focus mechanism for adjusting the position of the photographing lens in the optical axis direction so as to coincide with the imaging position It is preferable that the imaging device is provided integrally with the imaging element.

  In the photographing apparatus, a positioning mechanism for positioning the photographing lens with respect to the eyepiece between the eyepiece mounting holder and the lens barrel, and the eyepiece for maintaining the positioning state It is preferable that a one-touch attachment / detachment mechanism for coupling and releasing the attachment holder and the lens barrel by one-touch operation is provided. Further, it is preferable that the range of movement of the photographic lens in the optical axis direction by the focus mechanism is a range that can be focused on a subject from infinity to a very close distance shorter than the distance of clear vision.

  As described above, according to the present invention, images that can be visually recognized by the naked eye with all optical devices (microscopes, telescopes, ranging finder, etc.) that are visually recognized through the eyepiece of the optical device are photographed by the camera (digital type). (E.g., taking a picture with a single-lens reflex camera including a video camera or projecting a picture onto a monitor with a video camera), it is possible to easily switch between visual observation of an optical device and photographing with a camera. In particular, with an optical instrument such as a commercially available microscope or telescope, the eyepiece lens can be adjusted to cope with the difference in visual acuity, while the camera is adjusted for the eyepiece adjusted according to the difference in viewers. Once, the viewing and photographing can be performed arbitrarily without re-adjustment when switching between viewing with the naked eye and photographing with the camera for the adjusted eyepiece.

  According to the first aspect, the eyepiece mounting holder integrally provided with the lens barrel is fixed to the eyepiece portion of the optical apparatus, and the camera barrel is provided as a camera mounting means on the lens barrel provided integrally with the eyepiece mounting holder. For example, by providing a camera mount (for example, bayonet type) having the same structure as the camera mount in an interchangeable lens for a single-lens reflex camera, it is possible to shoot an image viewed with the naked eye through an eyepiece through a camera through a photographing lens. For this reason, it is possible to easily look through the eyepiece lens and visually recognize the image, or to capture the visually recognized image with the camera by attaching and detaching the eyepiece attachment holder. In addition, when the eyepiece is adjusted according to the visual acuity of the viewer, once the position of the taking lens is set corresponding to the adjusted eyepiece, the subsequent switching between the viewing state and the camera photographing state is performed. Visual recognition with the naked eye and photographing of the visually recognized video can be performed without resetting the eyepiece and the photographing lens.

  For optical devices that are viewed (observed) with an eyepiece, the distance of clear vision is determined by adjusting the eyepiece according to the visual acuity of the viewer, and the position of the photographic lens is adjusted accordingly. The imaging position by the lens can be positioned on the imaging surface of the camera. As a result, it is possible to shoot images that can be viewed with the naked eye, which is the original observation mode in optical instruments, so that the range of use is not limited to academic, medical, and educational fields, but can be used for creating materials, for example. It can be used effectively. For example, in an educational setting or a lecture, when a teacher or lecturer looks directly into an optical device and wants to focus the image with his / her eyes on a large screen on a TV or monitor, a camera is attached to the optical device. Since many students can view and view the same screen at the same time, the lecture can be performed in real time and the contents of the lecture can be enhanced. When shooting with a camera via an optical device attached to the telescope, a virtual image in which a distant image is magnified at a clear distance is formed by the eyepiece of the telescope, and the magnified image is photographed with the camera. A telescope can be used instead of a long focus telephoto lens.

  According to the second aspect of the present invention, a positioning mechanism (for example, a seal splicing structure) for positioning the eyepiece unit mounting holder and the lens barrel is provided, and the positioning and holding can be coupled and released by one-touch operation. By providing a one-touch attachment / detachment mechanism (for example, an attachment structure using a bayonet type or an elastic engagement piece), the lens barrel can be attached / detached with a one-touch operation while the eyepiece attachment holder is attached to the optical device. Therefore, adjust the eyepiece lens according to your eyesight so that you can look directly into the optical equipment and adjust the position of the taking lens according to the adjusted eyepiece so that you can shoot with the camera. Once, you can switch between viewing with the naked eye and shooting with the camera without making any adjustments after that, and switch between appropriate viewing according to each easily and quickly. be able to.

  According to the third aspect of the present invention, the photographing lens includes a distance from the infinity to the clear vision of the optical device (a distance of about 250 to 300 mm that can be most easily observed by the human eye) and is closer to the nearest distance (about 150 mm). ), A subject within the above range can be photographed with only the present optical device mounted on the camera. In this case, since the present optical device can be used as an interchangeable lens for a camera suitable for photographing from infinity to a close range including a so-called clear vision distance, versatility is enhanced.

  Alternatively, according to a fourth aspect of the present invention, there is provided a photographing apparatus in which an imaging device for photographing an image formed by a photographing lens is integrally provided in the optical device, and a video output from the imaging device is output to a monitor. According to the conventional technique, the image signal from the image sensor is output to the monitor in the microscopic inspection work that has been problematic in that the eye is deteriorated by viewing and observing the eyepiece lens directly with the naked eye for a long time. Therefore, the visual deterioration can be prevented by projecting the visual recognition / observation target on the monitor for visual recognition / observation. Even in this case, when the eyepiece is adjusted according to the visual acuity of the viewer, once the position of the photographing lens is set corresponding to the adjusted eyepiece, the subsequent viewing state and photographing by the image sensor are performed. Visual switching with the naked eye and imaging of the visually recognized image can be performed without resetting the eyepiece lens and the photographing lens in switching between the states.

  For example, in continuous microscopic examination or observation of wild animals that gradually change over a long period of time, if such inspection and observation are continuously looked into optical equipment, eye strain is accompanied. In some cases, there is a risk of damaging your health, but if you use the imaging device to display the object to be inspected and the object to be observed on the monitor, you can perform inspections and observations in a natural or easy posture, easily and easily. Inspection and observation can be performed. In addition, the resolution of the monitor is inferior to that obtained by directly looking into the optical device, and when the limit of visual recognition on the monitor is limited, the present photographing device can be removed from the optical device. High-precision inspection and observation can be performed by direct visual recognition of optical devices. When the direct visual recognition is over, the imaging device can be attached to the optical equipment again to continue the inspection and observation by the monitor, and the direct visual recognition can be made temporary, so most of it is natural and impossible. It is possible to maintain health with a posture free from the above, and it is possible to perform high-precision inspection and observation as described above. In addition, telescopes etc. can be obtained at low cost as optical equipment using eyepieces, and by installing it outdoors and mounting this photographing device, images of optical equipment installed outdoors can be viewed on an indoor monitor. More easily, it can be observed on a general television, and the above-described observation can be performed more easily.

  According to the fifth aspect of the present invention, a positioning mechanism (for example, a seal splicing structure) is provided between the eyepiece mounting holder and the lens barrel, and the positioning and holding can be coupled and released by one-touch operation. By installing a one-touch attachment / detachment mechanism (for example, an attachment structure using a bayonet type or an elastic engagement piece), the camera can be attached and removed arbitrarily and easily with the eyepiece attachment holder attached to the optical device. This is effective for continuous inspection (observation). In that case, the inspection (observation) is usually performed on the monitor by the photographing apparatus, and when it is desired to inspect in more detail, the lens barrel and the image pickup device side can be removed and the microscope can be directly observed with the naked eye. By doing so, there is no problem of damaging health by continuously looking into the microscope with the naked eye, and there is no problem that detailed observation cannot be performed only by an inspection only on a monitor whose resolution is limited.

  According to the sixth aspect of the present invention, the photographing lens includes a distance from the infinity to the clear vision of the optical device (a distance of about 250 to 300 mm that can be most easily observed by human eyes) and is closer to the closest distance (about 150 mm). ), The subject within the above range can be photographed by the optical device alone.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an overall side view of an example in which an optical device according to the present invention is mounted on a telescope. In the figure, a telescope 2 is fixed on a pan head 1 a of a tripod 1, and one end of the optical device 4 in the axial direction is coaxially attached to an eyepiece portion 3 of the telescope 2. A single-lens reflex camera 5 is coupled to the other axial end of the optical device 4.

  FIG. 2 shows an overall side sectional view of the optical device 4. The optical device 4 includes an eyepiece mounting holder 6 and a lens barrel 7. The eyepiece mounting holder 6 is provided at the axial end opposite to the eyepiece part 3 side of the cylindrical body 6a and the cylindrical body 6a having an inner peripheral surface that is the same or enlarged in diameter as the outer diameter of the eyepiece part 3. It is formed in a shape having an outward flange 6b. One end in the axial direction of the lens barrel 7 is detachably coupled to the outward flange 6b. The lens barrel 7 has a diaphragm mechanism, and may simply be an opening 14b on the camera 5 side of a lens support 14 that supports the photographing lens 13 as shown in the drawing. A camera mount 8 is coaxially and integrally provided on the side opposite to the eyepiece attachment holder 6 side of the lens barrel 7.

  The cylindrical body 6 a of the eyepiece mounting holder 6 is coaxially mounted on the eyepiece portion 3, and the camera mount 8 is coupled to the interchangeable lens coupling portion 5 a of the single lens reflex camera 5. The camera mount 8 has a bayonet-type structure similar to a coupling portion of a general interchangeable lens for a single-lens reflex camera. In addition, what is necessary is just to prepare and replace the camera mount 8 which can respond to the difference in a dimension etc.

  As shown in FIG. 3, the cylindrical body 6a of the eyepiece attachment holder 6 has a pair of slits 6c cut in the axial direction (optical axis C) from the opening end at two locations in the diameter direction. And a circumferential groove 6d extending in the circumferential direction at a position crossing the slit 6c. A C-shaped fixing band 9 is wound around the outer peripheral surface of the eyepiece mounting holder 6 so as to fit in the circumferential groove 6d. Opposite projecting pieces 9a are formed at both ends of the C-shaped fixing band 9, and a disc-shaped fixing dial knob 11 is sandwiched between the projecting pieces 9a. ing.

  The fixing dial knob 11 is integrally provided with screw shafts 11a and 11b that are coaxial and project outward from both sides. The screw shafts 11a and 11b are formed with male threads in different directions and are formed on both projecting pieces 9a. Screwed. Accordingly, when the fixing dial knob 11 is turned to one side, the two protruding pieces 9a approach each other, and when the fixing dial knob 11 is turned to the other side, the two protruding pieces 9a move away from each other, and thus the fixing band 9 is wound or loosened. In this way, the eyepiece attachment holder 6 can be attached and detachably fixed to the eyepiece 3 of the optical device.

  In the illustrated example, a pressing ring (adapter) 12 having a C-shaped cross section is provided on the inner peripheral surface of the eyepiece mounting holder 6 and within the range in which the slit 6c extends. A plurality of types having a size in which the inner diameter d of the holding ring 12 is the same as the outer diameter of an eyepiece portion (an outer peripheral portion provided with an eyepiece lens) of various optical devices or expanded to a limit adjustable by the width of the slit 6c By preparing (for example, three types in 25-38 mm), it can be mounted on almost all eyepieces of various optical instruments that are commercially available.

  Then, with the fixing band 9 loosened, the eyepiece mounting holder 6 (cylindrical body 6a) is externally mounted on the eyepiece portion 3 and set at an appropriate position in the optical axis direction. The eyepiece attachment holder 6 (cylindrical body 6a) can be in close contact with the eyepiece 3 and fixed.

  The lens barrel 7 is provided with a photographing lens 13 coaxially with the eyepiece mounting holder 6. In the illustrated example, the photographing lens 13 is supported by a lens support 14 that is slidably contactable in the axial direction on the inner peripheral surface of the lens barrel 7. A radially outward lead pin 14 a is integrally provided at a suitable position on the outer peripheral surface of the lens support 14. The lens barrel 7 is provided with an axial slot 7a for receiving the lead pin 14a in a penetrating state and guiding it axially, and a focus adjusting cam cylinder 15 can be rotated coaxially on the outer periphery thereof. The exterior. On the inner peripheral surface of the cam cylinder 15, a cam groove 15 a having a width in which the protruding end portion of the lead pin 14 a can be immersed is formed.

  The cam groove 15a is formed to cooperate with the axial slot 7a so as to guide the lead pin 14a in the axial direction when the cam cylinder 15 is rotated in the circumferential direction. Accordingly, the photographing lens 13 can move by a predetermined amount in the optical axis direction by rotating the cam cylinder 15, and thus the focus mechanism is configured. The fixed position of the photographic lens 13 may be due to sliding contact resistance of the cam barrel 15 with respect to the lens barrel 7. In addition, a positioning member 10 is provided between the lens barrel 7 and the cam barrel 15. For example, the positioning member 10 is provided so that it can stand up and down on one side and a circumferential groove is provided on the other side. You may make it provide the elastic engagement nail | claw engaged with a direction groove | channel. Further, an anti-slip material is preferably attached to the outer peripheral surface of the cam cylinder 15 for easy operation by hand. In this way, the lens barrel 7 integrally including the photographing lens 13 is configured.

  The optical device thus configured is attached to the eyepiece portion 3 of the telescope 2 as shown in the above-described example and coupled to the single-lens reflex camera 8 so that an image taken by the eyepiece lens 3a can be seen through the photographing lens 13 with a single lens. An image can be formed on the film surface F of the reflex camera 8. In this case, for example, a mark is written on the cam cylinder 15 and a scale corresponding to the distance of clear vision is written on the lens barrel 7 so that the scale is adjusted in accordance with the optical device, and in this state, the optical of the lens support 14 is adjusted. An image that is substantially in focus can be taken simply by attaching the front end on the device side to the outer end surface 3b in the axial direction of the eyepiece portion 3 for attachment. In the case of the single-lens reflex camera 8, focusing can be confirmed by looking through the viewfinder. In the case of a digital camera with a monitor, it can be confirmed on the monitor.

  The distance of clear vision by an eyepiece lens in various optical devices is designed to form an image at a position that can be most easily observed by human eyes, and is approximately 250 to 300 mm. In general, since the eye is close to the eyepiece portion 3 for visual recognition and observation, the distance (L in FIG. 2) between the eyepiece lens and the end surface 3b of the eyepiece portion in the optical apparatus is substantially constant. Therefore, shooting for focusing on the film surface F of the camera 5 based on the distance and distance L of the clear vision in a state where the optical apparatus combined with the camera 5 is mounted on the eyepiece portion 3 as described above. The position of the lens 13 can be set in advance. The position can be made almost constant when mounted on a general optical apparatus.

  Even when the image is not formed on the film surface F just by being attached, the image is aligned on the film surface F by rotating the cam cylinder 15 forward and backward to move the photographing lens 13 as indicated by an imaginary line in the figure, for example. Can be burnt. Alternatively, the diopter adjustment mechanism on the optical device side may be adjusted. In a single-lens reflex digital camera, focusing can be confirmed in the same manner as a film type single-lens reflex camera, and if a monitor is provided, the image can be confirmed on a monitor immediately after shooting.

  In addition, a lens used in a general single-lens reflex camera requires a back focus (distance from the final lens surface to the focus position) of at least about 40 mm due to the single-lens reflex mechanism (the mirror operates in the body). Any lens with any focal length can be used if the condition is satisfied. However, if the focal length is increased, the overall mechanism is also increased, which makes it difficult to handle. Therefore, in the illustrated example, a single focus lens having a focal length of 50 mm and a brightness (maximum aperture ratio) of 1: 3.5 is used as the photographing lens 13. As long as the imaging condition on the film surface F is satisfied, the photographing lens 13 can be a single focus lens or, if necessary, a zoom lens. In the illustrated example, a single focus lens is used for simplicity.

  When this optical apparatus is mounted on a telescope, it is effective as a telephoto lens. As an effect thereof, when the focal length of the lens used is multiplied by the magnification of the telescope mounted, that is, when a 20 × telescope is mounted, the above-mentioned taking lens 13 will be described as an example, 1000 mm (= 50 mm × 20 This is an effect as a telephoto lens of approximately 1000 mm. In general, a telescope of 10 times or more can be seen. For example, in the case of 10 times, a 500 mm telephoto lens is conceived. However, since the magnification is still high, if it is desired to use as a telephoto lens with a lower magnification, for example, a telescope of about 5 times may be created and provided. Even in this case, when combined with the 50 mm photographing lens 13, a magnification effect equivalent to that of the 250mm telephoto lens can be obtained. Further, for example, if a wide-angle mirror having a reduction magnification of 2.5 times (a field image is reduced and a wide range is shown) is mounted, in the case of the photographing lens 13 of 50 mm, the super wide-angle lens of 1 / 2.5 times, that is, 20 mm. Shooting with the same field of view is possible.

  Further, when the optical device 4 is provided with a camera mount 8 and used as an interchangeable lens, the camera to be coupled is not limited to the single-lens reflex camera 5 (including a digital camera) illustrated in the drawing. Some video cameras have a mount structure that can correspond to an interchangeable lens for a single-lens reflex camera, and can be applied to such a video camera.

  Further, by rotating the fixing dial knob 11 in the reverse direction, the fixing band 9 can be loosened and the optical device 4 can be easily removed from the optical apparatus. It can be done easily. This is an advantage of the present apparatus because it cannot be easily performed by removing the eyepiece part and attaching an adapter or the like and shooting with a camera. Furthermore, it is possible to take a picture without attaching it to the eyepiece. In this case, the eyepiece attachment holder 6 is not required, so that the eyepiece attachment holder 6 and the lens barrel 7 can be attached to and detached from each other. The eyepiece attachment holder 6 can be removed to take a picture. As the detachable mechanism, various forms are conceivable, and for example, a bayonet type may be used.

  The optical device 4 is not limited to being mounted on the telescope. FIG. 4 shows an external view of the optical device 4 mounted on the microscope 21. In addition, the same code | symbol is attached | subjected to the part similar to the said example of illustration, and the detailed description is abbreviate | omitted. As described above, in the optical device 4 according to the present invention, the optical device to be mounted may be an optical device in which the eyepiece portion provided with the eyepiece protrudes in a cylindrical shape, and the telescope / microscope of the above illustrated example may be used. In addition, the present invention can be applied to, for example, binoculars, astronomical telescopes, riflescopes, ranging probes, loupes, optical finders of cameras, and endoscopes. Since the attachment procedure to them is the same as in the above illustrated example, the illustration is omitted. The effect is also the same.

  Next, a photographing apparatus 31 using the optical device will be described. FIG. 5 shows an example in which the telescope 2 is mounted. The same parts as those in the illustrated example are given the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 6, the structure of the eyepiece mounting holder 6 in the photographing apparatus 31 is the same as that in the illustrated example, and the structure of the lens barrel 7 and the photographing lens 13 is moved. It may be the same as the above-mentioned example of illustration, and those explanations are omitted.

  In the present photographing device 31, a CCD 32 as an image pickup device is disposed in a portion corresponding to the film surface F of the single-lens reflex camera 8 in the illustrated example. Even with the CCD 32 having a small light receiving area, a sufficient resolution for visual recognition and observation can be secured. For example, in the case of a CCD of about 1/3 to 1/4 inch, the photographing lens 13 has a focal length of 8 A lens of about ˜12 mm can be used. Similarly to the above example, a zoom lens may be used as necessary.

  Further, a substrate 33 provided with a control circuit including its power supply is connected to the CCD 32. The CCD 32 and the substrate 33 are fixed through a support member in a cylindrical casing 34, and thus a CCD camera similar to a video camera is configured. Note that one end side of a power cord 35 connected to an external power source and one end side of a video cord 37 for connecting to an external monitor 36 as shown in FIG. Has been.

  In the photographing apparatus 31, an image formed by the eyepiece 3a is formed on the CCD 32, and an electronic image received by the CCD 32 is transmitted to the monitor 36 and displayed on the screen 36a of the monitor 36. As a result, the visual observation / observation using the telescope 2 enables visual observation / observation on a large screen by the monitor 36. Eye deterioration can be prevented. Look at the image displayed on the monitor 36 even when you take an unreasonable posture looking into the eyepiece 3a for a long time, such as when observing wild animals or observing objects that gradually change over time. Therefore, continuous observation and monitoring can be performed very easily and easily. In the main photographing apparatus 31 that performs photographing with the CCD 32, an aperture is not necessary.

  Further, the present photographing apparatus 31 is not limited to being attached to the telescope, and FIG. 7 shows an external view of the photographing apparatus 31 attached to the microscope 21. In addition, the same code | symbol is attached | subjected to the part similar to the said example of illustration, and the detailed description is abbreviate | omitted. As described above, in the photographing apparatus 31 according to the present invention, the optical device to be mounted may be an optical device in which the eyepiece portion provided with the eyepiece protrudes in a cylindrical shape, and the telescope / microscope of the above illustrated example may be used. In addition, the present invention can be applied to, for example, an optical finder of binoculars, an astronomical telescope, a rifle scope, a rangefinder, a loupe, and a camera, and can also be applied to an endoscope. Since the attachment procedure to them is the same as in the above illustrated example, the illustration is omitted. The effect is also the same.

  In some cases, the eyepiece of the optical device is observed with the naked eye. In this case, since the observer is nearsighted or farsighted, the distance of clear vision differs depending on the observer. The adjustment can be performed by the eyepiece lens 3a on the optical device side, but when the position of the eyepiece lens 3a is changed, the image forming position through the eyepiece lens 3a is changed.

  In this optical apparatus, the focus position can be adjusted by the photographing lens 13 as described above. By adjusting the focus position of the photographic lens 13, the difference in the clear vision distance can be corrected. Specifically, the observer looks into the eyepiece lens 3a and performs optical adjustments suitable for visual recognition with an optical device, and in that state, the camera 5 and the photographing device 31 are mounted. In the case of the photographing device 31, the focus position can be adjusted by the photographing lens 13 so as to focus while looking at the monitor.

  Thus, once the observer adjusts the position of the eyepiece lens 3a according to his / her vision, and adjusts the focus position of the photographing lens 13 according to the position of the eyepiece lens 3a, he then looks directly into the optical device. Visual observation with the naked eye and observation with a monitor by attaching the photographing device 31 can be arbitrarily switched without being adjusted again. This is particularly effective in, for example, inspection with the microscope 21. It is not preferable to look directly into the microscope 21 with the naked eye for a long time because it may be harmful to health. Therefore, the photographing apparatus 31 is usually mounted on the microscope 21 and the inspection is performed on the monitor. In the monitor inspection, the eye position is free and the inspection is performed in an easy posture such that the eye can be viewed from a distant position, and the degree of fatigue is extremely small. However, it may be difficult to judge fine wrinkles due to the limit of the resolution of the monitor. In this case, since the present optical device and the photographing device 31 can be detached from the microscope 21, the microscope 21 can be directly observed with the naked eye and an accurate determination can be made. When the inspection is completed, the optical device and the imaging device 31 can be attached to the microscope 21 again to return to observation on the monitor. As described above, since the direct observation with the naked eye on the microscope 21 can be performed only when necessary, health is not impaired.

  In addition, since the photographing device 31 can cope with the adjustment position of the eyepiece 3a, even if observers with different visual acuities change, if the focus positions of the eyepiece and the photographing lens by the observer are adjusted, then Similar to the above, visual recognition with the naked eye and photographing with a camera can be performed without any problem.

  Then, no optical adjustment is required in attaching and detaching the optical device and the photographing device 31, and the above operation can be easily performed. Furthermore, since the fixing band 9 can be wound or loosened by a simple operation of simply rotating the fixing dial knob 11 in the attachment / detachment, the different observation modes can be selected by a one-touch operation. The same applies to the case where the single-lens reflex camera 5 is used, and the same applies to other optical devices such as a telescope.

  In addition, normal shooting can be performed without being attached to an optical device. In this case as well, as in the case of the example of the optical device described above, it is possible to project the desired subject from the infinity to the very close distance by setting necessary conditions in the same manner as a normal camera.

  Furthermore, it is possible to output a video output in parallel with the monitor output and record it on a magnetic recording medium or the like. This is convenient when there is no need to view and observe on time. It is also possible to shoot alone without attaching to an optical device.

  Next, another example of the optical device is shown in FIGS. In addition, the same code | symbol is attached | subjected to the part similar to the said example of illustration, and the detailed description is abbreviate | omitted.

  The optical device 41 is provided with a lens 13 made of, for example, three balls, which is integrally held by a lens support 14. The three-lens lens 13 has no special meaning, and other plural-lens lenses may be used. The lens support 14 is supported by a first lens barrel 42 that surrounds the lens support 14 so as to be movable in the axial direction (optical axis direction). The first lens barrel 42 is provided with a slot 42a along the axial direction to guide the lead pin 14a of the lens support 14 in the optical axis direction. On the outer periphery of the first lens barrel 42, a cam cylinder 15 for focus adjustment is externally provided.

  A second lens barrel 43 having an L-shaped cross section is coaxially fixed to the end surface in the axial direction of the first lens barrel 42 on the optical device side. Approximately half of the cam barrel 15 on the optical device side is surrounded by the cylindrical portion of the second lens barrel 43. The engaging member 15a is integrated with the outer peripheral surface of the cam cylinder 15 that is substantially half of the camera side, and the optical device side end of the engaging member 15a enters the inner peripheral side of the second lens barrel 43. This prevents the cam cylinder 15 from falling off. A rubber grip, for example, is provided on the outer peripheral surface of the engagement member 15a so as to be gripped by hand and to make it easy to turn the cam cylinder 15.

  An eyepiece mounting holder 45 is detachably coupled to the end surface in the axial direction of the second lens barrel 43 on the optical device side. In this attachment / detachment mechanism, various structures can be applied, but in the illustrated example, a bayonet type example is shown for simplicity. As shown in FIG. 8, a pair of fixing pins 59 are provided on the end face in the axial direction of the second lens barrel 43 so as to protrude, for example, at symmetrical positions in the radial direction. The protruding portion of the fixing pin 59 includes a shaft portion and a head portion whose diameter is increased at the protruding end. An annular rear end plate 44 is provided on the second lens barrel 43 side of the eyepiece mounting holder 45, and the outer peripheral portion of the rear end plate 44 is formed in an outward flange shape. As shown in FIG. 9, a pair of arc-shaped slots 44 a that cooperate with the fixing pin 59 to form a bayonet type coupling mechanism are provided. In this way, the eyepiece attachment holder 45 and the lens barrels 42 and 43 are detachable.

  When the eyepiece mounting holder 45 is rotated in the direction indicated by the arrow A in FIG. Positioned as indicated by the imaginary line, the bayonet coupling between the two can be released. Then, as shown in FIG. 10, the eyepiece attachment holder 45 can be easily detached from the lens barrels 42 and 43. When the optical device 41 is used as an interchangeable lens, the eyepiece attachment holder 45 is not necessary, and thus the eyepiece attachment holder 45 can be removed and photographed as shown in FIG. Thus, by making the lens barrels 42 and 43 and the eyepiece mounting holder 45 integrally provided with the photographing lens 13 detachable, the handleability is improved.

  The eyepiece attachment holder 45 in the illustrated example is spanned along the axial direction between a front end plate 46 provided opposite to the rear end plate 44 and both end plates 44 and 46, and at a symmetrical position in the radial direction. A pair of pivots 47 arranged, a block-shaped gripping member 48 supported by each pivot 47, a cam ring 49 that surrounds both gripping members 48, and each gripping member 48 facing the inner peripheral surface of the cam ring 49 And a return spring 50 for energizing and energizing the ball.

  As shown in FIG. 10, the gripping member 48 is formed with a bifurcated claw portion 48 a that sandwiches the pivot 47. FIG. 10 shows a state in which the eyepiece portion 3 is gripped by both gripping members 48 in which the respective claw portions 48 a are brought into contact with the outer peripheral surface of the eyepiece portion 3. The claw portion 48a has a shape divided with a gap in the axial direction of the pivot 47, and a return spring 50 made of a torsion coil spring is wound around the pivot 47 so as to be positioned in the gap. Both ends of the return spring 50 extending in opposite directions are engaged with the left and right ends of the gap of the gripping member 48 as shown in FIG.

  Further, a pair of cam surfaces 49 a that are in sliding contact with the back portion 48 b on the side opposite to the claw portion 48 a of the gripping member 48 are formed on the inner peripheral portion of the cam ring 49. The cam surface 49 a is formed of a semi-arc-shaped slope as viewed from the axial direction having a height difference in the radial direction over the half circumference of the cam ring 49. The gripping member 48 is elastically biased outward in the radial direction by the return spring 50, and as shown in FIG. 12, the deepest portion of the cam surface 49a with respect to the radial outward direction and the back portion 48b of the gripping member 48 are in contact with each other. In the contacted state, the gripping member 48 is in a state of maximum separation with respect to the eyepiece portion 3.

  By rotating the cam ring 49 in the circumferential direction, the radial height of the cam surface 49a changes, and the gripping member 48 can reciprocate in the radial direction accordingly, so that the gripping member 48 is moved inward in the radial direction. By rotating the cam ring 49, the eyepiece portion 3 can be gripped in the radial direction by both gripping members 48 (FIG. 11). The gripping state can be held by the frictional engagement force between the cam surface 49a and the back portion 48b. By rotating the cam ring 49 in the direction of loosening the gripping state, it is possible to perform insertion / extraction at the time of attachment / detachment with respect to the eyepiece portion 3. According to the eyepiece attachment holder 45 of the illustrated example configured as described above, the optical device can be easily attached to and detached from the eyepiece 3. The fixing mechanism using the eyepiece mounting holder is not limited to the illustrated example, and any mechanism that can be arbitrarily fixed and released can be used.

  Since the outer diameters of the eyepiece portion 3 are different in various optical instruments, it is preferable to be able to cope with the difference in diameter. The difference in diameter can be dealt with by the radial movement mechanism of the gripping member 48 described above. For example, the outer diameter of the eyepiece part of various optical devices currently on the market is about 28 to 42 mm as described above. What is necessary is just to set the radial direction moving amount | distance of the holding member 48 so that it may obtain.

  In the case of a special eyepiece 3 having a smaller diameter, for example, as shown in FIG. 13, it is C-shaped when viewed from the axial direction, and the axial length is set to the corresponding length of the gripping member 48. This can be dealt with by using a very small diameter adapter 51 formed together. In this case, the adapter 51 for the small diameter is previously mounted on the eyepiece portion 3, and the outer peripheral surface thereof is gripped by the both gripping members 48 as the outer peripheral surface of the eyepiece portion 3. In this way, the present optical device 41 can be mounted on the eyepiece portion of any optical device, and is highly versatile.

  By keeping the eyepiece attachment holder 45 fixed to the eyepiece portion 3 of the optical device as in this illustrated example, the eyepiece attachment holder 45 can be positioned with respect to the optical device only once, with the naked eye to the optical device. Switching between direct observation and photographing using a camera or photographing device can be performed. As a result, the coupling and centering (optical axis alignment) can be performed simultaneously, such as the bayonet coupling in the illustrated example, so that the adjusted state can be easily reproduced. Although the optical axis deviation between the optical apparatus and the present optical apparatus can be allowed to some extent, the structure in which the eyepiece mounting holder 45 and the lens barrel 7 are bayonet-coupled allows the camera 5 and the photographing apparatus 31 to be connected. It is not necessary to check the optical axis adjustment every time the is installed.

  Further, in the present optical device 41, a diaphragm mechanism is provided on the camera side of the photographing lens 13. This diaphragm mechanism does not need to have a special structure, and may be an opening (aperture) of an arbitrary size at the center of the optical axis using a plurality of commercially available general diaphragm blades 52. . In the illustrated example, each diaphragm blade 52 is pivotally supported on the lens support 14 so that the diaphragm blade 52 is supported in the axis (optical axis) direction by a diaphragm blade presser 53. A lead pin 52 a protruding from a position different from the pivot position of the diaphragm blade 52 is engaged with the diaphragm blade presser 53 in a penetrating state. Further, a diaphragm blade ring 54 is provided so as to surround the diaphragm blade holder 53, and the diaphragm blade ring 54 is coaxially supported by the inner peripheral surface of the first lens barrel 41 so as to be rotatable. It is integrated with the interlocking ring 55.

  The first lens barrel 41 is provided with an annular aperture switching frame 56, and the aperture switching frame 56 and the aperture interlocking ring 55 are connected via a pin 57. An axial groove 55a is provided on the inner peripheral surface of the diaphragm interlocking ring 55, and a lead pin 54a projecting radially outward on the outer peripheral surface of the diaphragm blade ring 54 is axially formed by the axial groove 55a. To be guided. Thereby, when the photographic lens 13 is moved in the optical axis direction, the aperture blade 52 and its opening / closing mechanism can be moved together with the photographic lens 13.

  Then, as shown in FIG. 8, it is preferable to provide a cushioning material 58 at a portion that contacts the eyepiece portion 3 of the lens support 14. Thereby, it is possible to protect the eyepiece portion 3 and to some extent in the optical axis direction. As described above, in an optical apparatus having an eyepiece and visually observing and observing with the naked eye, the distance of clear vision is determined to some extent, and the positioning in the optical axis direction described above is effective. Normally, the eyepiece is attached at a position where the cushioning material 58 contacts the eyepiece 3 in a state where the photographing lens 13 is positioned at a predetermined position (a state where the rotation position of the cam cylinder 15 is set to a predetermined mark position). By fixing with the holder 45, in-focus shooting can be performed within the range of the depth of field. The setting of the distance of clear vision by the eyepiece on the optical device side is not particularly standard, and there may be cases where the focus is not achieved. This can be handled by adjusting the optical axis direction.

  In the illustrated example, the diaphragm interlocking ring 55 is rotated by turning the diaphragm switching frame 56, and the diaphragm blade ring 54 is also rotated through the engagement between the axial groove 55a and the lead pin 54a. To do. Since the lead pin 52a moves in the circumferential direction by the rotation of the aperture blade ring 54, the aperture blade 52 rotates around the pivot position with respect to the lens support 14 as a rotation center. Depending on the amount of rotation, the aperture area to be a diaphragm by each diaphragm blade 52 can be changed. As an aperture, for example, it is preferable to be able to set an F value of 1:32 or 1:44, which is a small aperture further exceeding an F value of 1:16 or 1:22, which is a minimum aperture normally used in a general camera. It should be noted that, on the open side of the stop, it is set to 1: 3.5 of the photographing lens 13 described in the above illustrated example.

  As a result, in addition to shooting from infinity to the closest distance in normal shooting with the camera 5 when not used by being mounted on an optical device, shooting at an extremely close distance of about 200 mm from the shooting lens 13 to the subject is possible. Become. In such extremely close-up shooting, the depth of field becomes extremely shallow, and therefore, for example, as a very deep stop that is not used in a normal shooting environment to increase the depth of field, for example, When shooting a moving subject by setting the aperture with an F value of 1:44 by rotating the aperture switching frame 56, a strobe is forced on the camera 5 side to compensate for an extreme shortage of light due to extreme aperture reduction. Shoot with flash. In this case, it is possible to shoot only when the flash is fired, so the peak time of the flash fires as a substitute for the shutter speed, which provides an instantaneous shutter effect and shoots a subject that is moving violently can do.

  When the aperture is made very dark as described above, the viewfinder of a single-lens reflex camera becomes very dark and it is difficult to set conditions for looking through the viewfinder. In that case, it is only necessary to set the conditions under a bright image with the aperture wide open, and shoot as a small aperture as described above when it is time to shoot. Note that since the reach of the strobe light is limited, the background of the photographed subject may be dark. If you want to prevent this and the subject is a stationary object, you can shoot with a slower shutter speed without using a strobe.

  Note that the eyepiece mounting holder 41 in this example is not limited to the optical device 4 coupled to the camera in the illustrated example, but can be applied to a corresponding portion of the photographing device 31 provided with the CCD 32 described above. is there. In this case, the mounting procedure for the eyepiece portion 3 and the operation and effects thereof are the same as those described above.

  In the above illustrated example, the bayonet type is shown as a detachable mechanism between the eyepiece mounting holder 41 and the photographic lens 13 portion (lens barrel 43, 44), but it is not limited to the bayonet type and is equivalent in convenience. Needless to say, any other attachment / detachment mechanism may be used. By doing so, in addition to the good handling with respect to the difference in the above-mentioned photographing modes, the eyepiece mounting holder 45 can be used as a common lens barrel for a camera and a lens barrel provided with a CCD. Further, since it becomes possible to take a picture by recombining appropriately according to the picture taken by the camera or the CCD, the cost as an optical device corresponding to both can be reduced.

  FIG. 14 is a fragmentary sectional side view showing a state in which the photographing apparatus is attached to the microscope. In the figure, for example, an eyepiece attachment holder 71 is attached to an eyepiece sleeve 21 a as an eyepiece portion of the microscope 21. The eyepiece attachment holder 71 is formed in a cylindrical shape having an inner diameter of a size that can be inserted and removed with almost no gap with respect to the outer peripheral surface of the eyepiece sleeve 21a. The eyepiece attachment holder 71 has an outer shape in which a large-diameter portion 71a is formed at the front end portion on the optical device side and a small-diameter portion 71b is formed at the rear end portion on the camera side. A circumferential groove 71c having a bottom surface that is smaller in diameter than the small-diameter portion 71b is formed in a portion that becomes a step portion between the large-diameter portion 71a and the small-diameter portion 71b.

  The large-diameter portion 71a is provided with a fixing screw 72 that is screwed so as to penetrate inward in the radial direction at, for example, three locations at equal angular pitches in the circumferential direction. Further, a part of the inner peripheral surface of the portion provided with the fixing screw 72 in the large diameter portion 71a is recessed, and a thin cylindrical spacer is provided between the recessed portion and the outer peripheral surface of the eyepiece sleeve 21a. 73 is provided.

  The spacer 73 prevents the tip of the fixing screw 72 from hitting the outer peripheral surface of the eyepiece sleeve 21a and being damaged when the fixing screw 72 is screwed to fix the eyepiece mounting holder 71 to the optical device as a retrofit. Therefore, it is preferable that the surface is formed of an elastic material that is hardly damaged. By using an elastic material, for example, as shown in the figure, even when the frame of the eyepiece lens 3a is larger than the outer diameter of the eyepiece sleeve 21a, the spacer 72 can be mounted with a certain extent.

  A radial inward flange 71d is formed at the camera side end of the eyepiece mounting holder 71 so as to cover a portion surrounding the opening on the axial end surface (portion viewed with the naked eye) of the eyepiece sleeve 21a. ing. Thus, when the eyepiece attachment holder 71 is attached to the eyepiece sleeve 21a, the radial inward flange 71d contacts the eyepiece sleeve 21a, so that the eyepiece attachment holder 71 is positioned in the optical axis direction with respect to the eyepiece sleeve 21a. . Thereafter, it can be fixed with a fixing screw 72.

  A cylindrical camera frame 74 is fitted to the small-diameter portion 71b of the eyepiece mounting holder 71 so as to be freely inserted and removed. A camera case 75 is coupled to the camera frame 74 coaxially and integrally. In the example shown in the drawing, a part of the camera case 75 is joined into the camera frame 74 by a predetermined amount, and both are coupled. In the camera case 75, a photographing lens 13 and a CCD camera 76 having a built-in CCD 32 are provided in the same manner as in the illustrated example. The photographing lens 13 also forms a virtual image formed at a clear vision distance on the CCD camera 76 by the eyepiece lens 3a.

  In the illustrated example, the eyepiece mounting holder 71 and the camera frame 74 as a lens barrel are detachable by a one-touch operation, and the structure thereof will be described below.

  As described above, the camera frame 74 is fitted to the eyepiece mounting holder 71. Note that the inner diameter of the camera side portion of the camera frame 74 is smaller than the frame of the eyepiece 3a. Thereby, the small diameter part of the camera side part of the camera frame 74 contacts the radially inward flange 71d.

  The camera frame 74 is provided with a pair of lock levers 77 that are symmetrical in the radial direction in the illustrated example. The lock lever 77 is pivotally supported at its intermediate portion so that it can swing in the radial direction of the camera frame 74. The front end (on the optical device side) of the camera frame 74 does not overlap with the circumferential groove 71 c when attached to the eyepiece attachment holder 71. An engaging projection 77a having a triangular cross-section projecting toward the circumferential groove 71c is formed at one longitudinal end of the lock lever 77, and the camera frame 74 is attached to the eyepiece mounting holder 71. When the engaging protrusion 77a engages with the circumferential groove 71c, the camera frame 74 is prevented from coming off in the optical axis direction, and the camera frame 74 is combined with the contact of the camera frame 74 with the radially inward flange 71d. Is positioned in the optical axis direction.

  The other end of the lock lever 77 in the longitudinal direction is slightly bent outward in the radial direction with respect to the camera frame 74. A spring body 78 is interposed between the other end of the lock lever 77 and the camera frame 74. Since the lock lever 77 is elastically biased by the spring body 78 in such a direction that the engaging protrusion 77a is immersed in the circumferential groove 71c, the attachment state of the camera frame 74 to the eyepiece attachment holder 71 is maintained. .

  Even in the illustrated example, a slot is provided in the camera frame 74 in the optical axis direction so as to be able to cope with a difference in clear vision distance in the optical apparatus, and the slot is passed through the slot and screwed into the camera case 75. An adjustment knob 79 is provided. By loosening the adjustment knob 79, the camera case 75 can move in the optical axis direction according to the length of the slot with respect to the camera frame 74 (arrow B in the figure). Since the camera case 75 is fixed to the camera frame 74 by tightening the adjustment knob 79 at the position where the eye point is adjusted by the movement, the photographing lens 13 is fixed at the adjustment position. By this adjustment, the virtual image can be formed on the CCD camera 76 even if the distance of clear vision is moved by moving the eyepiece 3a in accordance with the visual acuity of the observer.

  An adjustment dial 80 similar to the diaphragm switching frame 56 in the illustrated example is provided so as to surround the camera case 75. By turning the adjustment dial 80 in the circumferential direction, the diaphragm can be adjusted by a diaphragm adjusting mechanism (not shown) which may have the same structure as the above-described example.

  As described above, since the locking protrusion 77 swings in the radial direction of the camera frame 74 with respect to the circumferential groove 71c as the locking lever 77 swings, both locking levers resist the spring force of the spring body 78. By pushing down the other longitudinal end of 77 toward the camera frame 74 in the direction indicated by the arrow C in the figure, the engaging protrusion 77a can be detached from the circumferential groove 71c. Thereby, the engagement (immersion state) of the engagement protrusion 77a with respect to the circumferential groove 71c can be released, and the camera frame 74, that is, the camera frame 74, that is, the one-touch operation of removing the camera frame 74 from the eyepiece attachment holder 71 in this state. The imaging device can be removed from the optical device.

  Further, when the camera frame 74 is attached to the eyepiece attachment holder 71, as shown in FIG. 15, the camera frame 74 is aligned substantially coaxially with the eyepiece attachment holder 71 in the optical axis direction ( Just plug it into the arrow D). As shown in the drawing, the inclined surface on the optical device side of the engaging projection 77 a having a triangular cross-sectional shape hits the outer peripheral edge of the eyepiece mounting holder 71 in a state where it is elastically biased by the spring body 78. By forming in this way, the engagement protrusion 77a side of the lock lever 77 is pushed and expanded as shown by the arrow E in the drawing along with the movement at the time of attachment. Then, when the protruding end of the engaging protrusion 77a rides on the outer peripheral surface of the eyepiece mounting holder 71 and reaches the circumferential groove 71c in the riding state, it elastically enters the circumferential groove 71c. The engaged state shown in FIG. 14 is obtained. As described above, the photographing apparatus can be integrally attached to the optical apparatus by a one-touch operation of inserting the camera frame 74 into the eyepiece attachment holder 71 in the optical axis direction.

  As described above, since the photographing apparatus can be attached to and detached from (coupled to and released from) the optical device by one-touch operation, the inspection on the monitor in the above-described inspection with the microscope and the inspection directly looking through the microscope (visual inspection) can be easily performed. And can switch quickly. In addition, since the eyepiece mounting holder 71 is fixed in advance to the optical device, the matching between the eyepiece mounting holder 71 and the camera frame 74 is based on the mechanical coupling structure as described above. Since it is easily reproducible and it is not necessary to perform optical axis alignment and focus adjustment on the optical device again in the above attachment / detachment, the workability when using the monitor inspection (and camera photographing) and the visual inspection together is good. In particular, as described above, inspection is performed by looking directly into the microscope only when it is desired to perform detailed inspections. In normal inspections, monitoring can be performed without harming the health, and switching can be performed easily and quickly. Therefore, it is effective in such an inspection.

  Moreover, although the example using the CCD camera 76 is shown in the illustrated example, the same applies to the case of using a single-lens reflex camera as shown in FIG. In that case, the same camera mount 8 as in FIG. 2 is attached to the camera frame 74, and the camera frame 74 is attached to the single-lens reflex camera.

  In the case of bird watching using an optical device as a telescope, the eyepiece attachment holder 71 is attached to the eyepiece of the telescope, and the eyepiece 3a whose position is adjusted according to the visual acuity of the observer is measured with a camera. The camera is once attached and the position of the photographic lens 13 is adjusted so as to focus. Usually, observation is performed by directly looking into the telescope with the naked eye, and when photographing a subject (bird), a camera frame 74 is attached and photographed by the camera.

  At this time, since the camera can be quickly attached to the telescope by the one-touch operation described above, it is possible to prevent an important photo opportunity from being missed in bird watching. In addition, since it is not necessary to continue observation through the camera viewfinder with the camera attached at all times in order not to miss a photo opportunity, observation with a normal telescope can be performed except during shooting, making observation and shooting easy. It can be carried out.

  Further, the one-touch attaching / detaching mechanism capable of one-touch operation is not limited to the above-described illustrated example, and various mechanisms are possible. For example, a mechanism as shown in FIG. 16 may be used. In addition, the same code | symbol is attached | subjected about the part similar to the said example of illustration, and the detailed description is abbreviate | omitted.

  In FIG. 16, a support plate 81 is fixed to the eyepiece mounting holder 71, and the support plate 81 is provided with a radial recess 81a having an opening sufficient to pass light passing through the eyepiece 3a. ing. One end (upper side in the figure) of the radial recessed portion 81a in the longitudinal direction is opened in a part of the outer peripheral surface of the support plate 81, and the other end is closed. A slide engagement plate 82 that is slidably engaged with the radially recessed portion 81a in the longitudinal direction is fixed to the end surface of the camera case 75 on the optical device side.

  The slide engagement plate 82 is formed in a substantially rectangular shape, and the lengths in the longitudinal direction and the width direction are larger than the outer diameter of the camera frame 74, respectively. The width of the radially recessed portion 81a is sized to be movable in the longitudinal direction while supporting the camera frame 74. The radial recessed portion 81a is provided with left and right guide grooves 81b for guiding both side edges in the width direction of the slide engagement plate 82 in the longitudinal direction. In addition, a hole for allowing light passing through the eyepiece lens 3 a to the photographing lens 13 is provided in a substantially central portion of the slide engagement plate 82.

  To attach the camera frame 74 to the eyepiece attachment holder 71, both side edges of the slide engagement plate 82 are aligned with both guide grooves 81b, and the slide engagement plate 82 is radially recessed as shown by the arrow F in the figure. Insert it into 81a. Both side edges of the slide engagement plate 82 are guided by the guide grooves 81b, whereby the slide engagement plate 82 is positioned in the optical axis direction.

  Further, the slide engagement plate 82 is positioned in the direction perpendicular to the optical axis of the slide engagement plate 82 by abutting the end in the insertion direction of the slide engagement plate 82 to the bottom formed continuously with the both guide grooves 81b. 13 is aligned with the optical axis. Although there is a shift due to a gap between the slide engagement plate 82 and the guide groove 81b, it can be within an allowable range.

  According to this mechanism, the photographing apparatus can be attached to the optical device only by sliding the slide engagement plate 82 in accordance with the guide groove 81b of the radial recessed portion 81a. Also, when removing, it is only necessary to slide in the opposite direction. The other functions and effects are the same as in the illustrated example.

It is the whole side view of the example which mounted | wore the telescope with the optical apparatus based on this invention. It is a whole sectional side view of an optical device. It is the principal part expanded sectional view seen along the arrow III-III line of FIG. It is a whole side view of the example which mounted | wore the microscope with the optical apparatus based on this invention. It is the whole side view of the example which mounted | wore the telescope with the imaging device based on this invention. It is a whole sectional side view of an imaging device. It is a whole side view of the example which mounted | wore the microscope with the imaging device based on this invention. It is a whole side view at the time of mounting | wearing the eyepiece part which shows the other example of an optical apparatus. It is a figure which shows the structure of the bayonet type seen along the arrow IX-IX line | wire of FIG. It is a side view which shows the isolation | separation state of an eyepiece part attachment holder and a photographic lens part. It is the longitudinal cross-sectional view seen along the arrow XI-XI line of FIG. FIG. 10 is a diagram corresponding to FIG. 9 illustrating the maximum separation state of the gripping member. It is a figure corresponding to FIG. 9 which shows the holding | grip state using an adapter. It is principal part fracture | rupture side sectional drawing which shows the other example of the one-touch attachment / detachment mechanism. It is a figure which shows the attachment point of FIG. It is a principal part perspective view which shows another example of the one-touch attachment / detachment mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Eyepiece part, 3a Eyepiece lens 4 Optical apparatus 6 Eyepiece part attachment holder, 6a Cylindrical body, 6c Slit 7 Lens barrel, 7a Axial direction slot 6a
8 Camera mount 9 Fixing band 11 Fixing dial knob 12 Holding ring 13 Shooting lens 14 Lens support, 14a Lead pin 15 Cam barrel, 15a Cam groove 21 Microscope 31 Imaging device 32 CCD
36 Monitor 37 Video code 48 Grip member, 48a Claw portion 49 Cam ring, 49a Cam surface 50 Return spring 52 Diaphragm blade 71 Eyepiece mounting holder, 71c Circumferential groove 74 Camera frame 75 Camera case 77 Lock lever, 77a Engagement protrusion 78 Spring body

Claims (6)

An eyepiece mounting holder that is fixed to a position corresponding to the eyepiece by an optical device having the eyepiece by retrofitting, and an eyepiece that is provided integrally with the eyepiece mounting holder and that directly looks into the eyepiece with the naked eye A lens barrel that holds a photographic lens for forming an image to be viewed;
A camera mounting means for mounting the camera on the side opposite to the eyepiece mounting holder side on the lens barrel, and an imaging point by the photographing lens in a state adjusted for visual observation of the eyepiece lens An optical apparatus comprising: a focus mechanism for adjusting an optical axis direction position of the photographing lens so as to coincide with an imaging position of the camera.   A positioning mechanism for determining a position of the lens barrel in the optical axis direction with respect to the eyepiece between the eyepiece mounting holder and the lens barrel, and the eyepiece mounting for maintaining the positioning state The optical apparatus according to claim 1, further comprising a one-touch attaching / detaching mechanism that performs coupling and release of the holder and the lens barrel by one-touch operation.   The range of movement of the photographic lens in the optical axis direction by the focus mechanism is a range in which focusing can be performed on an object from infinity to a very close distance shorter than a distance of clear vision. 2. The optical device according to 2.   An eyepiece mounting holder fixed to a position corresponding to the eyepiece on an optical device having the eyepiece by retrofitting, and an eyepiece that is provided integrally with the eyepiece mounting holder and directly looking into the eyepiece A camera barrel that holds a photographic lens for forming an image to be visually recognized, and an imaging point formed by the photographic lens in a state in which the eyepiece is adjusted to be visually recognized by the naked eye on the camera barrel. An optical device provided with a focus mechanism for adjusting the position of the photographic lens in the optical axis direction so as to coincide with the imaging position of the photographic lens shoots the image formed by the photographic lens and outputs the image output to the monitor. An imaging device using an optical device, characterized in that an image pickup device is integrally provided.   A positioning mechanism for positioning the photographing lens with respect to the eyepiece lens between the eyepiece portion mounting holder and the lens barrel, and the eyepiece portion mounting holder and the mirror for maintaining the positioning state The photographing apparatus using the optical device according to claim 4, further comprising a one-touch attachment / detachment mechanism that performs coupling and release of the body with a one-touch operation.   The range of movement of the photographic lens in the optical axis direction by the focus mechanism is a range in which focusing can be performed on an object from an infinite distance to a very close distance shorter than a distance of clear vision. 5. An imaging device using the optical device according to 5.

Images