JP3018319B2 - Photo equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a photographic device. BACKGROUND OF THE INVENTION In recent years, in addition to cameras using silver halide (silver halide) films, electronic cameras using image sensors called solid-state image sensors have been developed.
MOS or CCD (Charge Coupled Device) is used. However, at present, the total number of pixels in one screen is 400,000 pixels in an electronic camera, but this is good for a video camera for viewing on a TV or the like. Can't get as sharp a picture as a silver halide film camera. In other words, even if the total number of pixels of the image sensor becomes several times to ten times or more due to the progress of semiconductor technology, the number of pixels (silver halide particles) of the silver halide film camera is 20,000
It is not enough to realize something like 240,000 to 240 million,
It was a big challenge for the future. On the other hand, in the case of a silver halide film camera, as described above, a high-quality image can be obtained. However, handling is troublesome because of the photosensitivity, and the cost is high because it is a consumable. After the photographing, the photographed contents could not be confirmed without developing and printing on photographic paper. Therefore, if a photograph that failed to be taken is printed, the cost is further increased, and at least unless the image is developed, the degree of copying is not known. For example, when taking a photograph in which failure is not permitted, the aperture, shutter speed, etc. There was a drawback that the same subject had to be photographed several times with different shutter conditions. [Object of the Invention] The present invention has been made in the background of the above-described circumstances,
It is an object of the present invention to provide a photographic apparatus capable of easily and accurately confirming photographed contents without performing film development and printing. SUMMARY OF THE INVENTION In order to achieve the above-described object, the present invention provides a method for performing an image transfer to a photosensitive film and a solid-state image pickup device by operating a shutter switch, and It is a gist of the invention that the photographing conditions are automatically changed by a predetermined amount determined by a predetermined condition between the imprinting of the image and the imprinting of the subject image on the solid-state imaging device. First Embodiment Hereinafter, a first embodiment of the present invention will be specifically described with reference to FIGS. This embodiment is applied to a single-lens reflex camera, and FIG. 1 is an external perspective view of the same. 1 in the figure
Is a camera body, 2 is a taking lens, 3 is a distance ring, 4 is an aperture ring, 5 is a self-timer lever, 6 is a shutter switch, 7 is a winding lever, 8 is a shutter speed dial, 9 is a film rewind knob, 10 Are film speed dials, which have the same configuration as a normal camera. FIG. 2 shows the back surface of the camera, in which 11 is a finder, 12 is a window for displaying the number of films, and 13 is a back cover. In this case, a liquid crystal display device 14 and a keyboard 15 are mounted on the back cover 13 in this embodiment. The liquid crystal display device 14 is driven by, for example, a 120 × 160 dot matrix display system, is used as a reproduction function of an electronic camera, and can display an image of one screen. Also, on the keyboard 15, various keys for appropriately specifying, for example, image data for 36 screens, which are recorded on the recording medium of the electronic camera, and displaying the image data on the liquid crystal display device 14, that is, image numbers to be displayed. ten keys K ₁ to enter, this display key to display an image corresponding to the image number entered by K _2, plus key K ₃ for sequential display the next image, the minus key K ₄ for the previous image sequentially display In addition, there are provided a display ON key K ₅ and an OFF key K ₆ for specifying whether or not to display an image on the liquid crystal display device 14. FIG. 3 is a sectional view taken along the line AA in FIG. The internal structure of this camera is such that light from a subject is reflected by a reflecting mirror 16 installed at an angle of 45 ° through the taking lens 2 along the optical path L, and passes through the pentaprism 17 to the fanner 11. In addition to this, the reflection mirror 16 automatically pops up in conjunction with the opening operation of the shutter curtain ST, and has a single-lens reflex structure to be sent to the silver halide film 18. On the back cover 13, a flexible circuit board 19 is formed. On the circuit board 19, a liquid crystal display device 14 is electrically connected via an interconnector 20, and the keyboard 15 is electrically connected. Connected. In the figure, 21
Is a frame on which the liquid crystal display device 14 and the keyboard 15 are mounted. A spectral prism 22 is provided on the optical path between the pentaprism 17 and the finder 11. The spectroscopic prism 22 distributes light from the reflection mirror 16 to the center of the finder 11 through the focus glass 22 and the pentaprism 17, and is orthogonal to the incident light of the finder 11 in the same plane as shown in FIG. The light is split in one direction and sent to the image sensor 25 via the condenser lens 24. Here, if the light amount sent to the finder 11 is 80% of the whole, about 20% of the light amount enters the image sensor 25. Therefore, the fan becomes darker than that of a normal camera, but the problem is solved by performing automatic aperture adjustment described later. The image sensor 25 constitutes a solid-state imaging device,
In this embodiment, a CCD is used as an image sensor,
A large number of CDs are arranged in a matrix, for example, if the total number of pixels is 40
The resolving power is increased by configuring the pixel to be 10,000 pixels. Then, an image of a subject for one screen is imprinted on the image sensor 25, and by detecting the distribution of shading of the subject image, the image formed thereon is converted into an electric signal. Note that as a process for extracting a signal from the image sensor 25, a CCD sensor is known as a frame transfer type or an interline type, but any of them may be employed. Then
The image sensor 25 is formed on a film wiring board 26, and a semiconductor chip 27 constituting an LSI (Large Scale Integrated Circuit) is mounted on the film wiring board 26. The sensor 25 and the semiconductor chip 27 are electrically connected. FIG. 5 shows a block circuit diagram of this camera, which has a one-chip microcomputer as its core. In the figure, reference numeral 31 denotes a control unit for controlling various operations in accordance with a microprogram stored in advance. Signals corresponding to operations of the shutter switch 6, the shutter speed dial 8, and the film sensitivity dial 10 are input thereto. In response, it outputs control signals a ₀ , b ₀ , c ₀ , and d ₀ . Here, the control signal a ₀ is sent to the optical system control mechanism 32, a diaphragm by driving the diaphragm mechanism signal by a predetermined amount open. Also control signal
b ₀ is the electronic camera driving signal is sent to the electronic camera control circuit 33. In this case, the control circuit 33 sequentially reads data corresponding to the subject image received by the image sensor 25 through the photographing lens 2, the reflection mirror 16, the focus lens 24, and the like as image data for one screen, and as an image recording medium. And display it on the liquid crystal display device 14 via the display control unit 35. The semiconductor memory 34 is constituted by a RAM (random access memory) and is capable of storing imaging data for 36 screens. The writing and reading operations are executed under the control of the control circuit 33. The control circuit 33 is supplied with a key input signal output from a key input unit 36 corresponding to an operation key on the keyboard 15, and in response to this, the control circuit 33 performs a display operation on the liquid crystal display device 14, a semiconductor memory. Controls write and read operations for 34. Also, the control circuit 33 outputs a signal e ₀
Is output to the control unit 31 to cause the control unit 31 to sequentially output the control signals c ₀ and d ₀ . This signal c ₀ is transmitted to the mirror controller 3
7 is a signal for controlling the flip-up operation of the reflection mirror 16. The signal d ₀ is sent to the shutter control unit 38, a signal for controlling the opening operation of the shutter curtain ST. Next, the operation of the above embodiment will be described. When the photographing lens 2 is pointed at the subject during photographing, the subject image is formed by the photographing lens 2, the reflection mirror 16, the pentaprism 17, and the spectral prism 22.
Is focused on the finder 11 through the distance ring 3
The focus is adjusted with the aperture ring 4 and the aperture is adjusted with the aperture ring 4. When the shutter switch 6 is pressed after the focus and the aperture are adjusted by manual operation in this manner, the operation signal is transmitted to the control unit 31.
Sent to Thereby, the control unit 31 firstly outputs the signal a ₀
Is output to the optical system control mechanism 32. Then, the optical system control mechanism 32 operates, and the aperture amount adjusted by the manual operation as described above is further automatically opened by a predetermined amount.
In this case, the light sent from the pentaprism to the finder 11 is split by the splitting prism 22 and sent to the image sensor 25 through the focusing lens 24. Determined by the amount of spectral power of the spectral prism 22 and the sensitivity of the image sensor 25, the image finder 25 is sufficiently irradiated with light without darkening the finder. Thus the diaphragm is a predetermined amount open, is then the signal b ₀ from the control unit 31 outputs given to the electronic camera control circuit 33. In this case, since the light separated by the spectral prism 22 is transmitted to the image sensor 25 through the focusing lens 24, the control circuit 33 controls the image for one screen corresponding to the subject image received by the image sensor 25. The data is sequentially read and sent to the semiconductor memory 34 and sent to the display control unit 35. Therefore, the image sensor 25
The image data for one screen read from is written into the semiconductor memory 34 and converted into a display drive signal by the display control unit 35, and then displayed on the liquid crystal display device 14. When reading of the image data for one screen is completed in this way,
Signal e ₀ from the control circuit 33 is sent to the control unit 31 is outputted. As a result, the optical system control mechanism 32 operates to return to the original state before the diaphragm pressed the shutter. Then, the output signal c ₀ from the control unit 31, the mirror control unit 37 flip up the reflection mirror 16, followed signal d ₀ from the control unit 31 is outputted, a shutter control unit 38 to open the shutter curtain ST. For this reason, the subject image from the photographing lens 2 is sent to the silver halide film 18 when the shutter curtain ST is opened, and is captured. Thus, when the shutter is pressed during shooting,
The subject image is transferred to the image sensor 25 and recorded in the semiconductor memory 34, and then transferred to the silver halide film 18. In this case, the above-described operation is repeated each time the shutter is pressed, so that the image data for 36 screens is sequentially recorded in the semiconductor memory 34 in the order in which the image data was captured. Since the photographed contents are displayed on the liquid crystal display device 14, it is possible to confirm whether or not the photographed object has been successfully photographed by looking at the display. The subject can be taken again. Also, 36
After or ended before the screen shot is completed, in the case of confirming the contents already captured, the image number using the numeric keys K ₁ on the keyboard 15, as an image number If you want to see an image of, for example, 10 th " Enter `` 10 '' and press the display key K ₂
Operate. As a result, the address of the semiconductor memory 34 is specified, and the tenth image data is read out and displayed on the liquid crystal display device 14. Here, when checking the following 11-th image, if operating the plus key K ₃ once, 11 th image data from the semiconductor memory 34 is read and displayed by further one operation Then, the twelfth image data is read and displayed. The next image every time the plus key K ₃ is operated so that it can be sequentially displayed. On the other hand,
For example, in a state where 10-th image is displayed, when the minus key K ₄ is operated once, the image data of the 9 th are read and displayed in the semiconductor memory 34, an additional 1
By performing the operation twice, the eighth image data is read out and displayed. Thus it is possible to sequentially display the previous image every time the minus key K ₄ is operated. Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. In the first embodiment, the spectral prism is provided between the pentaprism and the finder. In the second embodiment, as shown in FIG.
A movable mirror 41 is provided between the pentaprism 17 and the finder 11, and the light reflected by the movable mirror 41 is
Is sent to the image sensor 25 via the. The movable mirror 41 is driven by the drive mechanism 42 and is set at a position (a broken line position in the figure) inclined by 45 ° from a position (solid line position in the figure) with respect to a light path L incident on the finder 11. FIG. 7 shows this circuit configuration, which has the same configuration as that of FIG. 5 shown in the first embodiment. However, in the second embodiment, the signal b output from the control unit 31 in response to the shutter operation. ₁
Is input to the control circuit 33 and also to a mirror control unit 43 that drives the movable mirror 41. The mirror control unit 43 drives the movable mirror 41 in accordance with signals b _1, or to set the movable mirror 41 in broken line in the drawing position, and controls the position or is set at the solid line position. In addition,
Signal b ₁ which is input to the control circuit 33 is a signal for executing the same function as the signal b ₀ shown in the first embodiment. Before the shutter is operated, the movable mirror 41 is set at the position indicated by the solid line in FIG. Therefore, the light from the pentaprism 17 is directly incident on the finder 11. When the shutter is pressed in this state, from the control unit 31 first signal b ₁ is output and input to the mirror control unit 43 and the control circuit 33. As a result, the movable mirror 41 enters between the pentaprism 17 and the finder 11, and is set at a position inclined by 45 ° with respect to the optical path L, that is, at a position indicated by a broken line in the figure. Therefore, at the same time when the shutter is pressed, all the light from the pentaprism 17 is reflected, the course of which is changed by 90 °, and is incident on the image sensor 25 via the focusing prism 24. On the other hand, input by a control circuit of the signal b ₁ 33 It is the same as in the first embodiment to be displayed on the liquid crystal display device 14 with is recorded in the semiconductor memory 34 reads the image data from the image sensor 25. As described above, in the second embodiment, the movable mirror 41 interlocked with the shutter operation is moved to the pentaprism 17 and the finder 11.
The light from the pentaprism 17 enters the finder 11 before the shutter is pressed, and is not sent to the finder 11 after the shutter is pressed, but is reflected by the movable mirror 41 and is reflected by the movable mirror 41 before the shutter is pressed. 25. As a result, in this embodiment,
As in the first embodiment, there is no need to control the aperture to open or return the aperture by a predetermined amount after the shutter operation. In other respects, the configuration is the same as that of the first embodiment, so that the same effects as those of the first embodiment can be obtained. Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIG. The third embodiment is a modification of the second embodiment, in that the shutter switch 51 is constituted by a two-stage switch. That is, the shutter switch 51 has a two-stage push structure, and includes a push button 52 and a coil spring housed therein.
53 and a switch contact piece 54 fixed to the lower end of the push button 52
And an operation shaft 55 inserted into the push button 52 via the switch contact piece 54 and abutting on the coil spring 53, and a switch contact piece 56 fixed to a lower end portion of the operation shaft 55. I have. The switch contact 56 contacts the switch contact 57, and the switch contact 54 contacts the switch contact 58,
The corresponding switches S ₁ and S ₂ output signals a and b,
Give to 31. In this case, the control unit 31 outputs a signal a ₁ in response thereto when the signal a is input, given respectively to the control circuit 33 and the mirror control unit 43, also when the signal b is an input signal
b _x, and outputs a b _y gives the corresponding AND gates 59, 60.
Note that the AND gate 59 and 60 are signal e ₀ is respectively inputted from the control circuit 33, and outputs the shutter control unit 38 of the AND gate 59, the output of the AND gate 60 is a mirror control unit
This is an operation signal input to 37. Otherwise, the configuration is the same as that of FIG. 7 of the second embodiment. Normally, the shutter switch 51 is at the position indicated by the broken line in the figure, and in this state in which either the upper or lower switch S ₁ or S ₂ is OFF, when the shutter switch 51 is depressed one stage, only the lower switch S ₁ is turned ON and the signal a Is input to the control unit 31. This signal a ₁ is output from the control unit 31 by, the movable mirror 41 is set to the broken line position, the image data from the image sensor 25 is imprinted in the semiconductor memory 34 is read.
In addition pushed in this state, the upper switch S ₂ remains lower switch S ₁ is set to ON is ON, the signal b is input to the control unit 31. As a result, the signals b _x and by are output from the control unit 31 to the shutter control unit 58 and the mirror control unit 57 via the corresponding AND gates 59 and 60 from which the signals b _x and by _y are output, so that the reflection mirror 16 is raised. The shutter curtain ST is opened. In addition,
If the finger is released in this state, it automatically returns to the position indicated by the broken line in the figure. Therefore, in the present embodiment, since the imprinting on the image sensor 25 and the imprinting on the silver halide film 18 can be performed with a time lag by operating the switch, the photographing displayed on the liquid crystal display device 14 can be performed. After confirming the contents, it can be copied to the film 18.
In other respects, the same effects as those of the first and second embodiments can be obtained. Fourth Embodiment Next, a fourth embodiment of the present invention will be described with reference to FIGS. The fourth embodiment is applied to a single-lens reflex camera having an active autofocus function using an infrared beam. FIG. 9 is a perspective view showing the appearance of the camera.
1,62 are provided, inside which an infrared light emitting diode,
An infrared sensor is provided. Further, in the present embodiment, camera liquid crystal display device 14 on the upper surface of the main body 1, Pulaski K _3, has a structure in which a minus key K _4, ON key K _5. The shutter switch 51 has a two-stage structure shown in FIG. FIG. 10 is a sectional view taken along the line AA in FIG. 9, and 64 is a TTL
The photometry reflected by the sub-mirror 64 by the automatic exposure sub-mirror is incident on the CCD 65. In the present embodiment, a spectral prism 66 is disposed between the shutter curtain ST and the silver halide film 18. This spectral prism 66
Is actually a square and, as shown in FIG. 11, the light incident upon the opening operation of the shutter is introduced into the silver halide film 18, and a part of the light is dispersed in a direction orthogonal thereto.
The light is introduced into the reflection prism 67. And this reflection prism 67
Reflects the light from the spectral prism 66 at a right angle, guides the light in the direction opposite to the optical path incident on the silver halide film 18, and
Through the image sensor 25. In the drawing, reference numeral 68 denotes a film winding shaft, and 69 denotes a sprocket. FIG. 12 shows this circuit arrangement, the control unit 31 signals a is inputted from the shutter switch 51, provided to the autofocus function 68 outputs a signal a _1, light from the subject is an autofocus function 68 Input as signal a ₂ via
In response to this, signals a ₃ and a ₄ are output and given to the corresponding focus control unit 69 and aperture control unit 70. The focusing control unit
Reference numeral 69 controls the optical system (photographing lens) 2 to perform focusing, and an aperture control unit 70 adjusts the aperture 71. Further, in response to the signal b from the shutter switch 51, the control unit 31 outputs the signals b ₁ and b ₂ to output the mirror control unit 37 and the shutter control unit 3
Give to 8. Further, the signal b ₂ from the control unit 31 is
And performs an operation of reading an image from the image sensor 25. Note that a signal output from the CCD 65 according to the reflected light from the sub mirror 64 is sent to the aperture control unit 70. Thus, in the present embodiment configured as described above, when the signal a output by pressing the shutter switch 51 one step is input to the control unit 31, the auto focus function 68
Works, and focusing is performed automatically. Next, the aperture control unit 70 operates based on the illuminance of the TTL CCD 65, and automatic exposure is performed. In this case, in this embodiment, in addition to the silver halide film 18,
Since it is divided into 25, the opening is increased accordingly. For example, assuming that the amount of light sent from the spectral prism 66 to the silver halide film 18 is 80% of the whole, the aperture is opened to increase the amount of light by 25%. Next, when a signal b output by pressing the shutter switch 51 in two steps is input to the control unit 31, the reflection mirror 16 is raised, and the shutter curtain ST is opened. At the same time when the shutter is opened, the subject image is transferred to the silver halide film 18 and the image sensor 25. As described above, in the present embodiment, since the subject image is simultaneously captured on the silver halide film 18 and the image sensor 25, exactly the same image is obtained. In addition, the same effects as in the first embodiment can be obtained. Fifth Embodiment Next, a fifth embodiment of the present invention will be described with reference to FIGS. This embodiment has a configuration in which the optical system of the silver halide film camera and the optical system of the electronic camera are provided separately, and FIG. 13 is a perspective view of the appearance. In the figure, reference numeral 71 denotes an optical system of a silver halide film camera, 72 denotes a distance ring thereof, and 73 denotes an aperture ring thereof. 74 is an optical system of the electronic camera, 75 is a distance ring, and 76 is an aperture ring.
The distance rings 72 and 76 are arranged side by side in the lateral direction, and teeth parallel to the axis are formed on the outer periphery thereof, so that they mesh with each other so that the rotation of the distance ring 72 is transmitted to the distance ring 75. Has become. A finder 11 is provided on the upper surface of the camera body 1 at a position corresponding to the optical system 71 of the silver halide film camera. Therefore, the optical system 74 of the electronic camera is provided at a position shifted laterally from the finder 11. A liquid crystal display device 14 is provided on the upper surface of the camera body 1, and a dashed line 77 indicating the shooting range of the silver halide film camera is printed on the liquid crystal display device 14.
The photographing range of the electronic camera is a range including the range of the silver halide film camera. FIG. 14 is a cross-sectional view taken along the line BB of FIG. 13, and the silver halide film camera is a single-lens reflex camera having a TTL automatic exposure function, and includes a reflection mirror 16, a sub mirror 64, a shutter curtain ST, a silver halide film 18, and the like. It has a normal configuration. On the other hand, the electronic camera arranges the image sensor 25 so that its center coincides with the optical axis of the optical system 74, and the image sensor 25 is electrically connected to the semiconductor chip 27 via the film wiring board 26. I have. In this embodiment, a silver halide film camera, an electronic camera, and a back cover 78, 79 are separately provided, and a rear portion of the camera body 1 on the back cover 79 side of the electronic camera is provided. A magnetic disk 80 called a mavi pack is provided detachably. The magnetic disk 80 is a recording medium of an electronic camera, which can be removed and displayed on a CRT screen, for example. Thus, according to the present embodiment configured as described above,
When focusing is performed by operating the distance ring 72 of the silver halide film camera, the distance ring 75 of the electronic camera rotates in conjunction therewith, and the electronic camera is automatically focused. Then, when the shutter switch 6 is pressed, the subject image is simultaneously projected on the silver halide film 18 and the image sensor 25. Further, since the optical systems 71 and 74 are provided separately, an optical system corresponding to a silver halide film camera or an electronic camera can be used, and the same effects as those of the first embodiment can be obtained. In the above embodiment, the CCD is used as the image sensor of the solid-state imaging device.
A semiconductor memory and a magnetic disk may be used as the recording medium of the electronic camera, but a magnetic bubble memory may be used as a nonvolatile solid-state memory. In addition, the electronic camera may be a color camera. In this case, for example, this can be realized by disposing a color filter called a mosaic filter in which three primary colors are scattered in a mosaic form immediately before the image sensor. [Effects of the Invention] As described in detail above, the present invention, when executing printing on a photosensitive film and printing on a solid-state imaging device by operating a shutter switch, performs the process of imaging a subject image on a photosensitive film. The photographing conditions are automatically changed by a predetermined amount determined by the predetermined conditions between the imprinting and the imprinting of the subject image on the solid-state image sensor. Since the inserted contents can be easily and accurately checked, useless photographing, film development, and printing can be significantly reduced. Further, the film and the electronic image are stored as they are, and the electronic image is reproduced and checked as necessary, and then submitted to film development.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 5 show a first embodiment of the present invention, FIG. 1 is an external perspective view of a single-lens reflex camera to which the present invention is applied, FIG. FIG. 3 is a sectional view taken along the line AA of FIG. 1, FIG. 4 is a sectional view of an essential part, FIG. 5 is a block circuit diagram, and FIGS. 6 and 7 show a second embodiment of the present invention. 6 is a sectional view of a main part, FIG. 7 is a block circuit diagram, FIG. 8 is a block circuit diagram showing a third embodiment of the present invention, and FIGS. 9 to 12 show a fourth embodiment of the present invention. FIG. 9 is an external perspective view,
FIG. 10 is a sectional view taken along the line AA in FIG. 9, and FIG.
FIG. 12 is a block circuit diagram, FIG. 13 and FIG.
FIG. 13 shows a fifth embodiment of the present invention. FIG. 13 is an external perspective view, and FIG. 14 is a sectional view taken along the line BB of FIG. 6 ... Shutter switch, 18 ... Silver film, 25 ...
... Image sensor.

   ────────────────────────────────────────────────── ─── Continuation of front page        Panel     Referee Masayuki Mori     Judge Akira Watanuki     Referee Masao Kashiwazaki                (56) References JP-A-58-35522 (JP, A)                 JP-A-57-78281 (JP, A)

Claims (1)

(57) [Claims] A photosensitive film on which a subject image is projected; a solid-state imaging device on which the subject image is projected; a shutter switch; and a switch operation of the shutter switch allows the projection on the photosensitive film and the projection on the solid-state imaging device. Photographing control means to be executed, and photographing condition change control means for automatically changing photographing conditions by a predetermined amount determined by a predetermined condition between imprinting on the photosensitive film and imprinting on the solid-state imaging device. A photographic device, comprising: 2. 2. The photographic apparatus according to claim 1, wherein said photographing condition change control means varies photographing conditions by varying a mechanical aperture amount. 3. 2. The photographic apparatus according to claim 1, wherein the predetermined condition includes a sensitivity of the solid-state imaging device. 4. 2. The photographic apparatus according to claim 1, wherein the photographing control means executes the printing on the photosensitive film and the printing on the solid-state imaging device at different timings by operating the shutter switch. .