JPH04273776A - Reproducing device of recording medium - Google Patents

Abstract

PURPOSE:To perform the focusing of a reproducing image, registering adjustment and to prevent the decrease of the reproducing light quantity concerning the reproducing device of recording medium. CONSTITUTION:Separation three-color light is read from a recording medium 26 by a reading light from a light source 24, these reproducing lights are synthesized by a three-color synthesizing optical system 28, the synthesized light is supplied through a total reflection mirror 46 to an optical view finder 48, focusing, etc., are adjusted, after that, the total reflection mirror is moved to the outside of the light path and supplied to an image sensor.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium reproducing apparatus that performs focusing and the like using an optical viewfinder.

0002

2. Description of the Related Art FIGS. 4 and 5 show an example of a recording system and a reproducing system of a recording and reproducing apparatus already submitted by the applicant (Japanese Patent Application No. 187786/1999). According to FIG. 1
is applied through the imaging lens 2, the optical shutter 3, and the three-color separation optical system 4, and an optical image of each color in which the optical image of the subject 1 is separated into three colors is stored on the recording medium 5. The configuration is such that images are formed in a juxtaposed state. Further, according to the reproduction system shown in FIG. 5, reference numeral 5 denotes a reading light source, and the reading light emitted from this light source 7 irradiates the recording medium 5, and the transmitted light is focused on the lens system 8 to perform main scanning. Three line image sensors 10, 11 whose directions are vertical
, 12. the line image sensor 10,
The output signals from 11 and 12 are each amplified by an amplifier (not shown) in the signal processing circuit 14, and then subjected to signal processing such as gamma correction and clipping in the Psellos circuit, and then output to a viewfinder, monitor receiver, etc. It is configured to be supplied to the device 16.

0003

Therefore, in the conventional apparatus described above, when there is a focusing shift or a registration shift of the reproduced image from the recording medium 5, the operator has to adjust the line image sensors 10, 11. , 12 on the viewfinder, it is necessary to make adjustments while checking the images, and it takes time to scan the line, making the adjustment that much more time-consuming. In addition, a translucent reflector is provided in front of the image sensor without going through these image sensors 10, 11, and 12, and an image is obtained on an optical viewfinder through this reflector for focusing and registration. Known methods for making adjustments and the like are also conceivable. However, in this case, since the reproduced light is supplied to the image sensors 10, 11, and 12 through the reflector, the amount of light is attenuated by the reflector, resulting in poor utilization efficiency of the reproduced light. . SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide an apparatus that can adjust focusing, registration, etc. of a reproduced image using a simple method, and does not reduce the amount of reproduced light. do.

0004

Means for Solving the Problems In order to achieve the above object, the present invention provides an apparatus having the following configurations 1) to 3). That is, 1) a three-color combining optical system that combines and outputs the three-color reproduction light that enters separately from the recording medium as simultaneous reproduction light; In a recording medium reproducing apparatus, the recording medium reproducing apparatus includes a reflecting mirror positioned on an optical path of light and reflecting the light in a direction leading to an optical viewfinder, and a photoelectric conversion element converting the combined light into an electrical signal. 1. A reproducing device for a recording medium, characterized in that the device is configured to move the recording medium between a position on an optical path and a position outside the optical path. 2) In the recording medium reproducing apparatus according to claim 1,
A recording medium reproducing device characterized in that a zoom lens system is disposed between a three-color synthesis optical system and a photoelectric conversion element. 3) A three-color synthesis optical system that combines and outputs the three reproduced light beams that enter separately from the recording medium as simultaneous reproduced light, and a three-color synthesis optical system that reflects the reproduced light related to the three color lights and leads to the optical viewfinder. a reflecting mirror for reflecting in the direction;
In a recording medium reproducing device comprising a photoelectric conversion element that converts combined light from a color combining optical system into an electric signal, at least one of the three color lights is combined with a different color light in the three color combining optical system. A reflecting surface is provided to reflect light in a direction in which the one-color light is reflected, while transmitting light in a complementary color to the one-color light in a direction leading to the reflecting mirror, and the reflecting mirror is fixed at a position outside the optical path of the composite light. Features: A recording medium playback device.

[0005]

[Operation] A reflector that reflects the reproduction light from the recording medium.
It can be moved to positions in and out of the optical path, or it can be fixed outside the optical path to obtain a reproduced image on the optical viewfinder, making it easier to perform focusing and registration adjustments. Prevents a decrease in the amount of playback light.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the information recording medium reproducing apparatus of the present invention will be described with reference to the drawings. FIG. 1 shows a playback device 20
This is a schematic diagram with the casing removed, in which a recording medium 26 is irradiated with read light from a light source 24 provided on a mounting board 22. This recording medium 26 has images of three primary colors (red: R, green:
G. The three-color synthesis optical system 28 is irradiated with reproduction light read out by the readout light. In this three-color synthesis optical system 28, the recording medium 26
The red reproduced light passes through the optical path correction prism 30 and is corrected in the optical path toward the prism 34 by the total reflection surface 32. Similarly, the blue reproduction light from the recording medium 26 also passes through the optical path correction prism 36 and is corrected in its optical path toward the prism 34 by the total reflection surface 38 . These optical path-corrected red reproduction light and blue reproduction light are combined with the green reproduction light that is irradiated straight onto the prism 30 from the recording medium 26, and are emitted to the projection lens system 42. The reproduced light from the projection lens system 42 is magnified to a predetermined magnification by a zoom lens system 44 at the next stage, and is irradiated onto a total reflection mirror 46 . The reproduction light is approximately 9 in Figure 1.
The light is reflected in the 0 degree direction and enters the optical viewfinder 48.

[0007] The operator uses this optical viewfinder 48
While checking the reproduced image, for example, by using an operation button (not shown) or the like, move the recording medium 26 in a predetermined direction via a motor, worm gear, etc. (not shown) to adjust focusing or registration, etc. The system is configured to move to obtain an image of a desired size. The total reflection mirror 46 is connected to support rods 50, 5 by a support shaft 49.
1, and is configured to be moved in a click-like manner between a position where the reproduction light is reflected and a position outside the optical path of the reproduction light by the action of a torsion spring 53. A lever 55 that is integrally formed with the support shaft 49 after the adjustment is completed.
When the total reflection mirror 46 is rotated in the direction of the arrow, the total reflection mirror 46 is held in a click-like manner by the action of the torsion spring 53 at the position shown by the dashed line outside the optical path. As a result, the reproduced light from the zoom lens system 44 is directly incident on the image sensor 59 consisting of a CCD (photoelectric conversion element) in the circuit unit 57 without being obstructed by the total reflection mirror 46.

FIG. 2 is a block diagram of the circuit unit 57.
The reproduction light is imaged on the image sensor 59, where:
It is photoelectrically converted into an electrical signal. This image sensor 59 is equipped with line sensors for each of the three primary colors.
．． G. B. It outputs a signal. R. from the image sensor 59. G. B. The signals are transmitted through amplifiers 61 and 6, respectively.
2 and 63, respectively, and the R signal is supplied to the next stage process circuit 65 via this amplifier 61. On the other hand, since the image sensor 59 is provided with a predetermined interval in the sub-scanning direction, A time delay corresponding to this interval will occur, and the G signal and B signal are supplied to the process circuit 65 via delay circuits (DL) 67 and 68 in order to synchronize them. The process circuit 65 performs signal processing such as gamma correction, matrix, clip, and setup, and outputs the signal to a recording/reproducing device 70 equipped with a frame memory, a monitor receiver 72, a printer 74, etc. It has become.

Therefore, according to this embodiment, since the optical viewfinder 48 receives the reproduced light from the previous stage that is supplied to the image sensor 59 for focusing, registration adjustment, etc., the line output of the image sensor 59 is Compared to a configuration in which focusing, register adjustment, etc. are performed by receiving a signal from an electronic viewfinder, adjustments can be made quickly without any image delay due to adjustment, and synthesized reproduced light is provided to the optical viewfinder 48. This makes it possible to adjust color misalignment, etc. Furthermore, since the total reflection mirror 46 is moved out of the optical path after adjustment,
There is no reduction in the amount of playback light. Furthermore, since the zoom lens system 44 is arranged after the three-color synthesis optical system 28, the line sensors provided corresponding to the respective primary color reproduction lights in the image sensor 59 respond to the movement of the zoom lens system 44. It has an extremely simple configuration as there is no need to move it.

FIG. 3 is a schematic block diagram of a reproducing apparatus 80 according to a second embodiment, in which the same components as those of the previous embodiment are denoted by the same reference numerals and detailed explanations will be omitted. In the same figure, the red reproduction light from the recording medium 26 is incident on the optical path correction prism 84 of the three-color combining optical system 82, and the red reproduction light is transmitted to the reflecting surface 8.
6 in the direction of the prism 88, while the complementary color reproduced light such as magenta passes through the reflective surface 86 and is reflected by the total reflection mirror 9.
It is emitted in the 0 direction. Similarly, the blue reproduction light from the recording medium 26 is reflected toward the prism 88 by the optical path correction prism 92. In this prism 88, the red reproduced light and the blue reproduced light are combined with the green reproduced light that is reproduced straight from the recording medium 26 to the prism 88, and the projection lens system 42
It is emitted to The total reflection mirror 90 is fixedly provided outside the optical path of the reproduction light synthesized and output from the prism 88, and the total reflection mirror 90 reproduces the complementary color of the red reproduction light transmitted from the reflection surface 86. The configuration is such that the light is reflected in a direction of approximately 90 degrees in FIG. 3 and is emitted to the optical viewfinder 48. Therefore, according to this embodiment, adjustments such as focusing can be performed without having to take the trouble to drive the total reflection mirror 90 and without reducing the amount of reproduced light.

[0011]

According to the apparatus according to claim 1, since the reproduced three-color light is supplied to the optical viewfinder before being supplied to the electric conversion element for focusing, registration adjustment, etc., the line sensor, etc. Compared to a configuration in which focusing, registration adjustment, etc. are performed by obtaining the output signal from an electronic viewfinder, the adjustment can be made quickly without any image delay due to adjustment, and color shift can be adjusted. Become. Further, since the reflecting mirror is moved out of the optical path after adjustment, the amount of reproduced light is not reduced. According to the apparatus according to claim 2, in addition to the effects of the apparatus according to claim 1, it is not necessary to move the image sensor etc. according to the movement of the zoom lens system, and it is possible to obtain a desired size with an extremely simple configuration. A reproduced image is obtained. According to the apparatus according to the third aspect of the present invention, adjustments such as focusing and registration can be quickly performed without reducing the amount of reproduction light without using the reflecting mirror leading to the optical viewfinder as a driving structure.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a playback device according to an embodiment of the present invention with the casing removed.

FIG. 2 is a block diagram of a circuit unit of a playback device according to an embodiment of the present invention.

FIG. 3 is a diagram showing another embodiment of the playback device according to the present invention.

FIG. 4 shows a schematic block diagram of a recording system of a recording medium.

FIG. 5 shows a schematic block diagram showing a conventional recording medium reproducing apparatus.

[Explanation of symbols]

20 Reproducing device 24 Light source 26 Recording medium 28, 82 Three-color synthesis optical system 30, 36, 84, 92 Optical path correction prism 3
2, 38 Total reflection surface 44 Zoom lens system 46, 90 Total reflection mirror 48 Optical viewfinder 59 Image sensor 65 Process circuit

Claims (3)

[Claims] 1. A three-color combining optical system that combines and outputs three reproduced light beams input separately from a recording medium as simultaneous reproduced light; A recording medium reproducing device comprising a reflecting mirror positioned on an optical path of the combined light and reflecting the combined light in a direction leading to an optical viewfinder, and a photoelectric conversion element converting the combined light into an electrical signal, wherein the reflecting mirror is A reproducing device for a recording medium, characterized in that the recording medium is moved between a position on the optical path and a position outside the optical path. 2. The recording medium reproducing apparatus according to claim 1, further comprising a zoom lens system disposed between the three-color combining optical system and the photoelectric conversion element. 3. A three-color synthesis optical system that combines and outputs the three-color reproduction light that enters separately from the recording medium as simultaneous reproduction light, and an optical viewing system that reflects the reproduction light related to the three-color light. In the recording medium reproducing apparatus, the recording medium reproducing apparatus includes a reflecting mirror that reflects the light in a direction leading to the finder, and a photoelectric conversion element that converts the combined light from the three-color combining optical system into an electrical signal. A reflecting surface is provided that reflects at least one colored light in a direction where it is combined with light of a different color, while transmitting light of a complementary color to the one color light in a direction leading to the reflecting mirror, and the reflecting mirror is connected to the combining light. 1. A reproducing device for a recording medium, characterized in that the device is fixedly provided at a position outside the optical path of the recording medium.