JP2000075403A - Film image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device where an image reader and a display device are integrated into one body. SOLUTION: A sleeve-like 35 mm film 2 is inserted between an incorporated light source A and a sensor 11 so as to reach a desired image position. It is allowed to insert the film 2 up to a corresponding position to each image and it is also allowed to directly insert the film into a slit 1b arranged on the side face of the display device main body 1. Light H1 emitted from the light source A is transmitted through the film 2 and guided to the sensor 11, it is preferable to use a scanning type imaging device such as an imaging tube and a CCD, etc., as the sensor 11. As for the light H1, the effect that the light received at the outermost part is the light transmitted through a perforation P among the light received by the sensor 11 after being transmitted through the film 2 is previously set in an image processing circuit. When the device power source is turned on, the luminance from the light source A in an absence of the film 2 is previously measured, and then, the ratio of the aforesaid luminance to the luminance of the light HP transmitted through the perforation P is calculated, then, the transmissivity of the perforation P is calculated by the image processing circuit 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device, and more particularly to a projector for projecting an image photographed by a negative film or a reversal film on a screen arranged in front of the display device.

[0002]

2. Description of the Related Art There are various methods for viewing an image recorded on a silver halide film such as a negative film or a positive film. For example, in the case of a generally used negative film, a method of printing on a photographic paper or the like and viewing it is used.

[0003] In the case of a positive film, as in the case of a negative film, there is also a method of viewing by enlarging and projecting with a projector, in addition to a method of printing on a photographic paper or the like for viewing.

Further, an image recorded on a film is converted into video information operated by using an operation type image device such as an image pickup tube or a CCD, and the converted information is input to a display device such as a CRT or a liquid crystal panel and displayed. Equipment is already commercially available.

[0005]

However, in the method of printing out a film image on a photographic paper or the like and appreciating it,
A print size generally used is not suitable for viewing by a plurality of people.

As shown in FIG. 7, a commonly used projector for enlarging and projecting a mounted film is suitable for use by a plurality of persons.
As shown in FIG. 8A, since an enlarged projection image is created optically, only an image recorded on a positive film can be used as an image recording medium. If a negative film is enlarged and projected by a projector, FIG. Since a negative image is naturally displayed as shown in FIG.

Therefore, as a method of viewing a negative film by enlarging and projecting it, there is a method of copying it onto a positive film and enlarging and projecting it with a projector. However, with this method,
It takes time and effort to copy a negative film to a positive film.

In addition, when a film image having an unbalanced color due to underexposure or overexposure due to a deviation from an optimum exposure condition during photographing, or illumination such as a fluorescent lamp or sunset, is enlarged and projected by the above-described projector, an output image is obtained. Since it is not possible to adjust the image quality such as brightness and color balance, there is also a problem that it is often difficult to appreciate the image as it is.

[0009] Further, as shown in FIG.
In a method of viewing an image on a large CRT or the like using an image reading device that converts image information into video information using a scanning image device such as D, in addition to the image reading device,
A separate display device must be prepared, and there is a problem that it is troublesome to easily carry the display to a desired place and display it.

[0010]

According to a first aspect of the present invention, there is provided a first light source for projecting a film, a sensor for receiving an image obtained by passing light from the light source through the film, and a sensor for receiving an image. An image processing circuit for processing the image data obtained from the image processing circuit, a display control circuit for displaying the image data processed by the image processing circuit, and a liquid crystal panel for displaying an image according to a signal from the display control circuit And a second light source for projecting the liquid crystal panel, and an optical system for enlarging and projecting an image obtained by the light projected from the second light source through the liquid crystal panel.

According to this configuration, the image obtained through the liquid crystal panel by the light emitted from the second light source is:
Enlarged projection display can be performed through an optical system. Further, by integrating the image reading device and the image output (display) device, it is possible to easily carry the image to a desired place and display the image.

Further, according to the invention of claim 2 of the present application, the image processing circuit determines whether the film is negative or positive from the transmittance obtained by measuring the perforation between adjacent frames of the film, In this case, the display screen is converted into a positive image by the image processing circuit and displayed.

According to this configuration, the negative film can be directly loaded on the display device without being copied onto the positive film, and the positive image can be enlarged and projected.

According to a third aspect of the present invention, there is provided a first light source for projecting a film, a sensor for receiving an image in which light from the light source passes through the film, and image data obtained from the sensor. An image processing circuit for processing
A display control circuit for displaying image data processed by the image processing circuit, a liquid crystal panel for displaying an image according to a signal from the display control circuit, and a second light source for projecting the liquid crystal panel. An optical system for enlarging and projecting an image obtained from the second light source through the liquid crystal panel, and further comprising a sensor for determining the type of the film, This sensor stops the negative / positive inversion function.

According to this configuration, an image can be displayed on the mounted film without any problem.

According to a fourth aspect of the present invention, there is provided a first light source for projecting a film, a sensor for receiving an image obtained from the light source through the film, and image data obtained from the sensor. An image processing circuit for processing
A display control circuit for displaying image data processed by the image processing circuit, a liquid crystal panel for displaying an image according to a signal from the display control circuit, and a second light source for projecting the liquid crystal panel. And an optical system for enlarging and projecting an image obtained from the second light source through the liquid crystal panel, and further having an image adjustment operation unit.

According to this configuration, when the read image is too bright or too dark, the luminance data of the image data and the output values of each of the RGB colors can be arbitrarily adjusted.

Further, the invention according to claim 5 of the present application uses the ferroelectric liquid crystal for the liquid crystal panel, and the invention according to claim 6 relates to the liquid crystal panel using the ferroelectric liquid crystal. In the panel, the image data once written by the image processing circuit does not undergo a rewriting process until another image data is written next.

According to these configurations, the liquid crystal can have a memory property.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail with reference to the drawings. FIG. 1 is an external perspective view of a film image display device according to a first embodiment of the present invention.

In FIG. 1, a film image display device 1
Has a slit 1b for inserting the developed 35 mm film 2 in the side surface 1a of the apparatus main body. An opening 1 into which a roll film 3 containing a cartridge can be inserted is provided on the top surface 1c.
d, a slit 1 f into which the film 5 mounted frame by frame can be inserted, and an image adjustment operation unit 15. A lens optical system 1e for magnifying and projecting an image is provided on the front surface of the apparatus, and can magnify and project the image on a screen 4 which is a display unit disposed in front of the apparatus.

Next, the operation of the present embodiment will be described with reference to FIG.
This will be described with reference to FIG. The 35 mm film 2 in a sleeve state is inserted between the light source A incorporated in the apparatus main body and the sensor 11 to a desired image position. At this time, the film 2 may be loaded and inserted into a carrier (not shown) having a square window hole at a position corresponding to each image, or may be provided directly on a side surface of the display device main body 1. May be inserted into the slit 1b. The light H1 emitted from the light source A passes through the film 2 and is guided to the sensor 11. At this time, a scanning image device such as an image pickup tube or a CCD may be used as the sensor 11. Then, the area irradiated from the light source A to the film 2 is slightly wider than the area where the image is projected as shown in FIG. 6, and the light from the light source A is also applied to the perforation P between the frames of the film. H1 is applied.

The light H1 that has passed through the film 2 is
Out of the light received in step (a), the light received in the outermost part is set in the image processing circuit in advance as the light passing through the perforation P. In addition, the luminance from the light source A without the film 2 is measured in advance when the power of the apparatus is turned on, and the ratio with the luminance value of the light HP that has passed through the perforation P is calculated. The calculation is performed by the processing circuit 12. If the transmittance is 10% or more, the image processing circuit 12 determines that the film 2 is a negative film, and inverts the image data sent to the image processing circuit 12 to a positive image.

The image data converted into the positive image is temporarily stored in an image memory 16 interposed between the display control circuit 13 and the display control circuit 13 stores the image data in a liquid crystal panel 14 built in the apparatus main body. The image is displayed. At this time, the liquid crystal panel 14 may be composed of a liquid crystal and a pair of substrates sandwiching the liquid crystal. For example, a ferroelectric liquid crystal having a memory property may be used. A light source B is disposed on the rear surface of the liquid crystal panel 14, and light H2 emitted from the light source B passes through the liquid crystal panel 14 and passes through a lens optical system 1e disposed on the front surface of the liquid crystal panel 14.
The image is magnified and projected on a screen 4 arranged in front of the apparatus main body.

When adjusting the brightness or color balance of an image, a signal is transmitted to the image processing circuit 12 by operating an image adjustment operation unit 15 disposed on the surface of the apparatus as shown in FIG. Can be The image processing circuit 12 can adjust the image by shifting the luminance value of the image data and the output value of each color of RGB up and down based on the signal sent from the image adjustment operation unit 15.

In the case of enlarging and projecting the film 5 mounted frame by frame, as shown in FIG. 1, the film 5 is loaded into a slit 1f provided on the top surface 1c of the apparatus. This position is located between the light source A and the sensor 11 and is in a sleeve state.
It corresponds to the same place as when the mm film 2 was inserted.
Further, a sensor 2 as shown in FIG.
0 is disposed to detect that the mounted film 5 has been inserted. Normally, a mounted film is a positive film, so when the sensor 20 detects the mounted film 5, the negative / positive reversal function is stopped. The procedure for displaying an image is the same as that of the above-described sleeve state except that the negative / positive inversion function is stopped.
The procedure is the same as the procedure for displaying the m film 2 in an enlarged projection display, so that the description is omitted.

When the roll film 3 at the entrance of the cartridge is enlarged and projected, the roll film 3 at the entrance of the cartridge is inserted through the hole 1d provided on the top surface of the apparatus shown in FIG.
Is loaded. Then, as shown in FIG. 5, the sensor 21 provided inside the apparatus is used to set the roll film 3 containing the cartridge.
Is detected, and the detected signal is sent to the roll film drive mechanism control circuit 24 to drive the drawer roller 22,
The roll film is drawn out between the light source A and the sensor 11, and is fed to a place where the roll film in the cartridge is loaded and a winding roller 23 provided on the opposite side of the light source A and the sensor 11 therebetween. In the case where a frame on which a desired image is projected is transmitted, when a frame feed button 25 for a roll film provided in the image adjustment operation unit 15 as shown in FIG. 2 is operated, a signal is transmitted to a roll film drive mechanism control circuit. Is sent to drive the pull-out roller 22 and the take-up roller 23, and the frame feed is completed.

In the case of the roll film 3 housed in the cartridge, both the negative film and the positive film may be used. The positive reversal function works in a similar procedure. The procedure for displaying the subsequent image is the same as the procedure for enlarging and displaying the 35 mm film 2 in the sleeve state described above, and thus a description thereof is omitted.

Next, as a second embodiment, a display device in which a ferroelectric liquid crystal is used for the liquid crystal panel 14 will be described.

The procedure until the image data is sent to the liquid crystal panel is the same as that of the first embodiment, and the description is omitted. As a liquid crystal panel, a nematic liquid crystal is often used, but the display of the nematic liquid crystal disappears unless an image signal for display is continuously sent. At the time of this rewriting display, flicker occurs, and a burden is imposed on the eyes of the observer.

However, in the case of a liquid crystal panel using a cholesteric liquid crystal such as a ferroelectric liquid crystal, since the liquid crystal panel has bistability due to the polarization action of the liquid crystal molecules, a signal for display is once sent to the liquid crystal panel to perform display. Thus, the display can be maintained without continuously sending an image signal for rewriting display.

Utilizing this property, in FIG. 2, an image is displayed on a liquid crystal panel 14 composed of a ferroelectric liquid crystal and a pair of substrates by the image data sent from the display control circuit 13. The image data is not sent to the liquid crystal panel 14 until the next new image data is sent from the image processing circuit 12 via the image memory 16. The display image is retained by utilizing the memory property of the. In other words, in a film image display device such as a projector, the displayed image is a still image, and is not rewritten by taking advantage of the memory property of the ferroelectric liquid crystal. Therefore, flicker that occurs at the time of rewriting does not occur. It is possible to provide a high quality image.

[Correspondence between the Invention and the Embodiment] The first light source in the present invention corresponds to the light source A in the embodiment, and the second light source in the present invention corresponds to the light source B in the embodiment. Equivalent to.

[0034]

According to the invention described in each claim of the present application, by integrating the image reading device and the image output (display) device, it is possible to easily carry the camera to a desired place and display an image photographed on a film. It is possible to arbitrarily adjust the brightness data of the image data and the output values of each color of RGB by operating the image processing circuit and the image adjustment operation unit connected to the image processing circuit unit. Thus, it has become possible to obtain an optimal image according to the purpose.

When the film is arranged between the first light source and the sensor, the transmittance of perforation between adjacent frames is measured, and a negative film or a positive film is judged by an image processing circuit, and the negative film or the positive film is judged. In this case, the image data obtained from the sensor is converted into a positive image in the image processing circuit, so that the negative film is not copied to the positive film, and is directly loaded into the display device.
Positive images can be enlarged and projected.

If a ferroelectric liquid crystal is used for the liquid crystal panel, the image data is sent once to the liquid crystal panel and displayed, and then the rewriting is not performed by utilizing the memory property of the ferroelectric liquid crystal. For example, it is possible to obtain an image of extremely high image quality without flicker.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of the overall structure of a film image display device according to the present invention.

FIG. 2 is a diagram illustrating an example of an image adjustment operation unit.

FIG. 3 is a diagram for explaining an example of the operation of the film image display device for enlarging and displaying a 35 mm film in a sleeve state according to the present invention.

FIG. 4 is a diagram for explaining an example of the operation of the film image display device for enlarging and displaying a mounted film according to the present invention.

FIG. 5 is a diagram for explaining an example of an operation of a film image display device for enlarging and displaying a roll film stored in a cartridge of the present invention.

FIG. 6 is a diagram for explaining a recorded image area, a perforation, and an irradiation area of light from a light source of a 35 mm film in a sleeve state according to the present invention.

FIG. 7 is a diagram of a conventional projector.

FIG. 8 is a diagram for explaining a conventional problem.

FIG. 9 is a diagram when an image reading apparatus using a conventional scanning image device is used.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Projector 1a Side of apparatus main body 1b Slit for inserting 35mm film in sleeve 1c Top of apparatus main body 1d Opening for inserting roll film contained in cartridge 1e Lens optical system 1f Slit for inserting mounted film 2 35mm in sleeve Film 3 Roll film housed in cartridge 4 Screen 5 Mounted film 11 Sensor 12 Image processing circuit 13 Display control circuit 14 Liquid crystal panel 15 Image adjustment operation unit 16 Image memory 20 Mounted film detection sensor 21 Housed in cartridge Roll film detection sensor 22 Extraction roller for roll film stored in cartridge 23 Roll-up roller for roll film stored in cartridge 24 Stored in cartridge Drive mechanism control circuit for roll film 25 Frame advance operation unit provided in parallel with image adjustment operation unit H1 Light emitted from light source A H2 Light emitted from light source B Light passed through HP perforation P Perforation

Claims (6)

[Claims] A first light source for projecting a film, a sensor for receiving an image obtained from the light source through the film, an image processing circuit for processing image data obtained from the sensor, A display control circuit for displaying image data processed by the image processing circuit, a liquid crystal panel for displaying an image according to a signal from the display control circuit, and a second light source for projecting the liquid crystal panel. An optical system for enlarging and projecting an image obtained through the liquid crystal panel with the light projected from the second light source. 2. The image processing circuit determines whether the film is negative or positive from the transmittance obtained by measuring the perforation between adjacent frames of the film. In the case of a negative film, the display screen is displayed by the image processing circuit. 2. The film image display device according to claim 1, wherein the film image display device is converted into a positive image and displayed. 3. A first light source for projecting a film, a sensor for receiving an image obtained from the light source through the film, and an image processing circuit for processing image data obtained from the sensor; A display control circuit for displaying image data processed by the image processing circuit, a liquid crystal panel for displaying an image according to a signal from the display control circuit, and a second light source for projecting the liquid crystal panel. An optical system for enlarging and projecting an image obtained from the second light source through the liquid crystal panel, and further comprising a sensor for determining the type of the film, A film image display device wherein the negative / positive reversal function is stopped by this sensor. 4. A first light source for projecting a film, a sensor for receiving an image obtained from the light source through the film, an image processing circuit for processing image data obtained from the sensor, A display control circuit for displaying image data processed by the image processing circuit, a liquid crystal panel for displaying an image according to a signal from the display control circuit, and a second light source for projecting the liquid crystal panel. An optical system for enlarging and projecting an image obtained from the second light source through the liquid crystal panel, and further comprising an image adjustment operation unit. Film image display device. 5. The film image display device according to claim 1, wherein a ferroelectric liquid crystal is used for the liquid crystal panel. 6. In the liquid crystal panel using the ferroelectric liquid crystal, image data written once by the image processing circuit is not subjected to rewriting processing until another image data is written next. Claim 5 characterized by the following:
The film image display device according to the above.