JPH0662287A - Video camera and video display device - Google Patents

Abstract

PURPOSE:To miniaturize the device by moving the arranging position of a liquid crystal panel to the optical system positions of two systems and freely attaching/detaching a projector light. CONSTITUTION:This device is provided with the optical system to observe pictures from an eye cup 9 through an eyepiece lens, light crystal panel and back light and the optical system to project a light 10 through the liquid crystal panel and a projection lens. As a projector, an engage part 11 of the light 10 is fitted to a terminal part 16 of a view finder 8, a flange part 15a is pushed, a cover member 15 is moved, a switch 20 is turned off, and connecting terminals 12 and 14 are turned to the state of enabling electrification. The finder 8 is raised from a main body 1 at 90 deg. and a reproducing mode is set. At such a time, a light source 32 is turned on, light condensed by a reflection mirror 33 and a condenser lens 34 projects the display of the liquid crystal panel. Thus, the fitting space of the light in the camera or view finder is not required, and the video camera can be miniaturized although a projector function is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video camera having a projector function and an image display device having a transmissive screen used when the projector function is used.

[0002]

2. Description of the Related Art As a conventional image display device using this type of video camera and projector function, for example, the structure disclosed in Japanese Utility Model Application Laid-Open No. 1-137171 of the same applicant is well known. In this conventional example, a backlight of a color liquid crystal panel at the time of video recording and a light source for a projector are respectively provided, and these light sources are provided in a video camera.

The image display device is arranged in front of the projection lens of the projector, and is composed of a pyramidal member having a funnel shape as a whole, and is arranged on the bottom surface of the pyramidal member. Project the image on the transmissive screen that you set up,
The image is viewed from the outside (back side).

[0004]

In the above-mentioned conventional example, a backlight for illuminating a color liquid crystal panel and a light source for the projector are separately provided for use as a video camera and as a projector, respectively. As a result, these light source storage portions become relatively large, and the projections of these portions increase the size of the video camera itself, which is inconvenient to handle and carry.

Further, since the image display device attached to the eyepiece is configured so that an image is formed on the transmissive screen provided on the bottom surface and the image is viewed from the outside, that is, the back side, There is a problem that the image becomes a left-right inverted image. In order to correct this reversed image to the correct image, it is necessary to reverse the sweep of the image element of the video projector between the projection on the wall surface and the projection on the transmissive screen. Configuration becomes complicated.

Further, in the image display device, in order to form an image of the light transmitted from the light source through the color liquid crystal panel and projected onto the transmissive screen to a certain size, the distance between the projection lens and the transmissive screen is set to some extent. However, there is a problem in that the funnel-shaped image display device has to be formed in a slender shape, which inevitably increases the size of the display device.

Therefore, the conventional example has a problem that the video camera and the image display device must be downsized in order to facilitate the handling and carrying thereof.

[0008]

As a concrete means for solving the above-mentioned problems of the prior art, the present invention is provided with a viewfinder having a built-in liquid crystal panel, and two systems of optical systems are provided inside the viewfinder through the liquid crystal panel. Provided is a camera having a system and capable of exhibiting a video camera function and a projector function respectively by moving the liquid crystal panel, wherein at least a light for a projector is detachably attached. Further, by changing the mounting direction of the light, the light for the projector can also be used as the light for the video, and when the optical system of the liquid crystal panel is switched, the corresponding optical A part of the system is a video camera that automatically switches.

Further, in a video display device detachably mounted on the front surface of a projection lens of a video camera having a projector function, the magnifying lens and the projection light transmitted through the magnifying lens are changed in direction by about 90 °. The present invention provides an image display device provided with an odd number of reflecting mirrors for reflecting the reflected light and a transmissive screen for forming an image of the reflected light, and also serves to protect the transmissive screen on the transmissive screen side. And a hood for blocking at least light from above is provided so as to be openable and closable, and a magnifying lens is provided so as to be freely inserted into and removed from the hood.

[0010]

The arrangement of the liquid crystal panel can be moved to the positions of the two optical systems, and the light for the projector can be attached and detached, so that the video camera can be downsized and the image display device can be provided with a reflecting mirror. The projection light by 90 °
By changing the direction and reflecting the light, it is possible to reduce the size and display a normal image.

[0011]

The invention will now be described in more detail by means of several illustrated embodiments. In the first embodiment shown in FIGS. 1 to 5, reference numeral 1 denotes a video camera body, which is equipped with a lens section 2, a microphone 3, and a power source section 4 such as a battery.

The video camera body 1 has a lid 5 for loading and unloading a video tape cassette, and a changeover switch 6 for the video camera and VTR and an operation button group 7 for each function when used as a VTR. There is. A viewfinder 8 is rotatably attached to the side surface of the video camera body 1.

An eyecup 9 is attached to the free end side of the viewfinder, and a light 10 dedicated to the projector is detachably attached to the vicinity of an intermediate portion through an engaging portion 11, and the vicinity of the engaging portion 11 is provided. Connection terminal 1
2, the power is supplied from the viewfinder 8 side.

Mounting portion 1 on the viewfinder 8 side
3 is composed of a pair of rail portions that are raised in a hook shape, a connection terminal 14 is provided inside thereof, and a lid member 15 is slidably arranged, and a flange is provided on one end side of the lid member 15. A portion 15a is formed by being raised, and a terminal portion 16 for mounting and dismounting the light 10 is formed on the flange portion side.

Further, the viewfinder 8 is provided with a speaker 17, a lens block 18 for a projector and a focus adjusting section 19 in the vicinity of its central portion, and a switch is provided at an end portion on the side opposed to the terminal portion 16. 20 is provided, and a stopper member 21 that also serves as a cover of the switch is formed. This stopper member regulates the end position when the cover 15 slides.

Inside the viewfinder 8, as shown in FIGS. 2 and 3, a drive board 22 for a liquid crystal driver / speaker which is turned on / off by the switch 20, a power source 23, a backlight 24 and a color. A liquid crystal panel 25 is provided, and a frame 26 of the color liquid crystal panel 25 is rotatably attached by a shaft 27, and a part of the frame is projected to the outside so that an action piece 26 is formed.
The action piece 26a is engaged with the notch portion 15b of the lid member 15.

Further, the viewfinder 8 is provided with a window portion 28 at a portion where the lid member 15 is located, that is, a side facing the lens block 18 for the projector, and a protective glass 29 is fitted into the window portion. Has been. still,
Reference numeral 30 is a projection lens for a projector, and 31 is an eyepiece lens for a viewfinder.

In the above structure, an image viewed from the color liquid crystal panel 25 and the backlight 24 from the eyecup 9 through the eyepiece lens 31 is the first optical system, and the light 10 is attached to the window 28 and the light 10 is attached. Through the color liquid crystal panel 25 rotated from the projection lens 3
What is projected through 0 is the second optical system.

Inside the light 10, a light source 32 such as a halogen lamp, a reflecting mirror 33, and a condenser lens 34 are arranged, and if necessary, a protective glass 35 may be attached to the front side. Then, the light from the light source 32 is condensed and projected by the reflecting mirror 33 and the condenser lens 34.

When the video camera having such a structure is used as a projector, the light 10 for the projector needs to be attached to a predetermined position of the viewfinder 8. In this case, the engaging portion 11 side of the light 10 is fitted into the terminal portion 16 and the light 10 is moved in the direction of the arrow, thereby pushing the flange portion 15a and moving the cover member 15 together.

By this movement, the action piece 26a receives the action of the cutout portion 15b, the color liquid crystal panel 25 rotates to a position to cover the window portion 28, and the cover member 15 moves until it comes into contact with the stopper member 21. The cover member 15 turns off the switch 20 to turn off the first optical system element, that is, the backlight 24, and at the same time, displays necessary for the viewfinder, for example, a mode display such as time counter, reproduction, fast forward, etc. The display and the like that are combined with are also lost.

At this position, the connection terminal 12 of the light 10 and the connection terminal 14 of the mounting portion 13 come into contact with each other to be in a state capable of conducting electricity. Then, as shown in FIG. 4, when the viewfinder 8 is raised up to about 90 ° from the camera body 1 and the video camera is switched to the reproduction mode, the light source 32 of the light 10 is turned on, and the reflecting mirror 33 and the condensing light are collected. The light condensed by the lens 34 projects the display of the color liquid crystal panel 25 through the window 28 onto, for example, a wall surface or a screen to display an image.

When the image is projected on the wall surface or the screen as described above, it is time for a large number of people to dim the room and watch it slowly. When the room is bright and two or three people want to see it,
The image display device 37 as shown in FIG. 5 is used.

The image display device 37 can be seen from the side when it is attached to the lens block 18 of the viewfinder 8, and the posture for looking at it is somewhat unreasonable. Therefore, the camera body 1 is slightly tilted. Better.
Therefore, the camera body 1 is equipped with the tilt adjusting means 36. The tilt adjusting means is, for example, a leg that can be freely taken in and out, and the tilt angle of the camera body can be arbitrarily set depending on the pulling-out state of the leg. The specific configuration of the video display device will be described later.

A second embodiment is shown in FIGS. The same parts as those in the first embodiment are designated by the same reference numerals, and their details are omitted. In the second embodiment, the light 10 is not exclusively used for the projector, but serves as both the video light and the light source for the projector.

This light 10 is different from the above embodiment in that an engaging portion 11 is provided in a direction substantially perpendicular to the light projecting direction, but a connecting terminal 12 is provided in the engaging portion. And the point that the protective glass 35 is provided on the front surface, having a light source, a reflecting mirror, a condenser lens, etc. inside.
This is similar to the above embodiment.

The mounting portion 13 provided on the viewfinder 8 on the side of the video camera main body 1 is provided not at a position facing the lens block 18 but rather at the front thereof, and the light 10 is attached to the mounting portion 13. Engagement part 1
It is attached by inserting 1 from the front side. Of course, this is the same as the above embodiment in that the connection terminal 14 is provided inside the mounting portion 13.

The mounting of the light 10 is used for illumination when it is mounted frontward, and is used for projector when it is mounted rearward. The contact terminal 12, whichever direction it is attached to,
14 can come into contact and supply power to the light 10.

The lid member 15 is mounted at a position facing the lens block 18 in the same manner as in the above embodiment, but the lid member 15 is opened and closed without sliding, which is different from the embodiment. . That is, as shown in FIGS. 7 to 8, the lid member 15 is attached via the shaft 38 so as to be openable and closable, and the flat reflecting mirror 39 is attached to the inside thereof.

The lid member 15 has skirt portions 15 on both sides.
d and 15e are formed by extension, and the skirt portions 15d,
15e are located on both sides so as to straddle the upper part of the viewfinder 8, one end of the crank arm 40 is pivotally attached to one skirt portion 15e, and the other end of the crank arm 40 is pivoted to the free end side of the frame 26. To wear. One end of the crank arm 40 attached to the skirt portion 15e faces the slit portion 8a provided on the side surface of the viewfinder 8 so that opening and closing of the lid member 15 is not hindered. Has become.

In the video camera having such a structure,
When shooting a video in a room or in a dark place, as shown in FIG. 7, if the light 10 is attached to face forward, it can be used as an illumination lamp for shooting, and when the video camera is used as a projector. The lid member 15 may be opened and the light 10 may be attached to the rear side.

When the lid member 15 is opened, the crank arm 40
By this, the color liquid crystal panel 25 is pulled up together with the frame 26 and positioned at the window portion 28, as shown in FIG. By pulling up the color liquid crystal panel 25, the switch 20 is turned off, the backlight 24 is turned off, and various displays as a viewfinder disappear. That is, the switch 20 is turned on / off by operating the lid member 15, and this switch is merely provided in the viewfinder 8.

When the light 10 is turned on by switching the video mode of the video camera body 1 to the projector mode, the light from the light 10 is reflected by the plane reflecting mirror 3.
The light is reflected at 9, and is projected to the outside from the projector projection lens 30 through the color liquid crystal panel 25, and is imaged on, for example, a wall surface or a predetermined screen. Further, as in the first embodiment, the image display device 37 is attached to the lens block 18.
You can attach and watch the video. This point will be described later.

In each of the first and second embodiments, the light 10 is detachable, so that the light 10 can be easily attached and used anytime and anywhere when necessary.
Therefore, the light 10 needs to be carried with the video camera body 1.

As shown in FIGS. 9 to 10, the strap belt 41 attached to the video camera body 1 is attached to the case 42.
Is attached, and the light 10 is housed in the case so that it can be carried with the video camera. Incidentally, 43 is a non-slip.

The case 42 has a size capable of accommodating the light 10, and a pocket portion 44 formed of a transparent sheet-like material is formed inside the lid portion 42a, and the spare halogen bulb is provided in the pocket portion. 32 can be stored. In any of the embodiments, the light 10 is detachable, and normally the light 10 is detached for carrying, so that the video camera body 1 is not bulky and is easy to carry.

Next, the image display device 37 will be described. 11 to 12 show a first embodiment of the video display device. The image display device 37 has a rectangular box shape as a whole, and has an attachment portion 45 for fitting and attachment to the lens block 18 of the video camera body 1 on one side surface of the short side, and the inside of the attachment portion 45. A magnifying lens 46 is disposed in the optical axis, a plane reflecting mirror 47 is disposed in the optical path of the magnifying lens 46, and the transmissive screen 4 is provided on the side where the reflected light is projected.
8 are provided.

In this case, the focal length of the magnifying lens 46 is fixed, and the focus adjusting section 19 in the lens block 18 may adjust the focus.
Further, the plane reflecting mirror 47 is arranged at an angle of about 45 ° with respect to the optical path so as to convert the optical path into a lateral direction of about 90 °, and the transmissive screen 48 is positioned on the side surface of the box.

Further, since the mounting portion 45 is required to secure a proper position in the fitting and mounting with the lens block 18, for example, the concavo-convex portion is provided mutually with the lens block 18, and the concavo-convex portion is matched. When this is done, fitting and mounting can be done, and if the fitting position is not proper, it will not be possible to install. Since the lens block 18 in the attached state does not rotate even when focusing, the image display device 37 is always in a proper position,
A proper image can be displayed on the transmissive screen 48.

The image projected on the transmissive screen 48 is reflected by the flat reflecting mirror 47 in the middle of the optical path projected through the projection lens 30 and the magnifying lens 46, so that the image is inverted by 90 ° and is transmitted. An image is formed on the screen 48, so that a normal image can be seen even on a transmissive screen whose image is formed from the back side.

FIGS. 13 to 15 show a second embodiment of the image display device, in which a hood 49 which also protects the transmissive screen 48 is added. This shade or bar
For example, it is attached rotatably and vertically openably and closably via a hinge or a shaft portion 50, and the opening position can be arbitrarily set by the frictional resistance of the shaft portion 50. Further, in order to shield the light in the left-right direction, a hood having an opening can be attached to the left and right sides. The internal structure is similar to that of the first embodiment.

By mounting the light-shielding cover 49 in this manner, for example, when golf play is half finished, a relatively clear image can be projected even in a bright room such as a dining room when having lunch, and the box type transmissive type is used. Since it is a screen and the camera body 1 can be tilted by the tilt adjusting means 36 so as to be easily viewed, a plurality of people can enjoy watching it together.

16 to 26 show a third embodiment.
In the third embodiment, the shape of the hood 49 in the second embodiment is changed and other functions are added. That is, the hood 49 attached to the image display device 37 so as to be openable and closable is formed by extending side plates 49 a and 49 b on both sides, and a boss-like shaft portion 50 is provided between the side plate and the image display device 37. It is provided and rotatably attached.

A groove portion 51 is provided along the side edge at a position near the shaft portion 50 on the upper surface of the image display device 37. When the hood 49 is opened, the shaft side edge 49c of the hood is
Is fitted in the groove portion 51 so as not to generate a gap, and when the transmissive screen 48 is viewed, light leaked from the rear side of the transmissive screen 48 is shut so that the screen can be easily viewed.

A magnifying lens 52 made of a Fresnel lens or the like is rotatably mounted inside the hood 49. In this case, the magnifying lens 52 may be attached to a predetermined frame or plate member 53, and the plate member 53 may be rotatably attached between the side plates 49a and 49b by, for example, a shaft 54. Then, a part of the plate member 53 is extended to form a knob 53a, a part of the side surface plate 49b corresponding to the knob is cut off to form a cutout 49d, and the cutout 53d is formed from the cutout 49d. It is made to project to the outside so that it can be easily put in and taken out.

Further, a special screen 55 is integrally attached to the bottom surface of the image display device 37. The structure of this screen will be described later.

The image display device 37 of the third embodiment having the above-mentioned configuration, as shown in FIG.
The lens block 1 of the video camera body 1 as in the embodiment
Used by attaching to 8. In particular, in the third embodiment, since the hood 49 is formed by extending the side plates 49a and 49b, there is a circumstance that the mounting portion 45 cannot be projected to the outside, and therefore the hood 49 is formed to be recessed inward. A magnifying lens 46 is arranged inside the mounting portion 45, a plane reflecting mirror 47 is arranged in the optical path of the magnifying lens 46, and a transmissive screen 48 is arranged on the side where the reflected light is projected. The configuration is similar to that of the first and second embodiments.

Even in this case, since the mounting portion 45 is required to secure an appropriate position in the fitting and mounting with the lens block 18, the mounting portion 45 is provided between the mounting portion 45 and the lens block 18 as in the first and second embodiments. Proper concave and convex portions are provided so that the proper fitting position can be maintained. Then, focus adjustment is performed by the focus adjustment unit 19, the image is inverted by 90 °, and the transmissive screen 4 is displayed.
8 and an appropriate image can always be seen through the transmissive screen 48.

The image displayed on the transmissive screen 48 can be seen further enlarged as shown in FIG. In this case, the magnifying lens 52 arranged inside the hood 49 may be taken out and the transmissive screen 48 may be seen through the magnifying lens 52.

That is, when the hood 49 is opened, the tab 53a is pinched with a finger and lowered downward, so that the plate member 53 and the magnifying lens 52 are positioned in a state of being hung on the front surface of the transmissive screen 48, and magnified. The lens 52 and the transmissive screen 48 face each other with a predetermined gap, and when viewed through the magnifying lens 52, the image on the transmissive screen 48 appears enlarged.

This state is shown in FIG. That is,
When the transmissive screen 48 is viewed through the magnifying lens 52, the transmissive screen 48 is located at the focal length of the magnifying lens 52.
The virtual image 48a is positioned and can be enlarged and viewed accordingly.

The special screen 55 attached to the back surface of the image display device 37 is used as shown in FIGS. 24 and 26. That is, the hood 49 is used as a pedestal, and the image display device 37 is erected so that the back surface of the hood 49 faces the obliquely upper surface.

As shown in FIG. 25, the special screen 55 comprises a polarizing plate 55a and a diffusing member 55b. The diffusing member 55b is formed by, for example, spraying a coating material containing aluminum powder on the back surface of the polarizing plate 55a, or sticking a metal plate having a satin finish on the back surface of the polarizing plate 55a.

With this configuration, the screen 5
The surface of No. 5 looks like a satin finish as a whole, and by using a polarizing plate, as shown in FIG. 26, when an image is projected as a projector, it is not so affected by the surrounding brightness, You can see the image relatively clearly. The maximum brightness at which this screen 55 is used is the brightness corresponding to a cloudy sky or almost evening.

In any case, the video camera of the present invention is
It has a video function and a projector function, and by removing the light source when the projector function is used, it eliminates the extra protrusion on the video camera body. It is a display device that can be viewed by multiple people.

[0056]

As described above, the video camera according to the present invention is a concrete means for solving the above-mentioned problems of the prior art. The present invention is provided with a viewfinder having a built-in liquid crystal panel, and inside the viewfinder, A camera that has two optical systems via a liquid crystal panel and can exhibit a video camera function and a projector function by moving the liquid crystal panel, and at least a projector light is detachably attached. As a result, there is no need for a light installation space in the camera or viewfinder, and the video camera can be downsized despite having a projector function, which is extremely convenient to handle and carry. .

Further, by changing the mounting direction of the light so that the light for the projector can also be used as the light for the video, it is possible to quickly cope with video shooting in a room or in a dark place. This has an excellent effect that an image can be immediately displayed as a projector by using the same light for the photographed object.

Furthermore, when the optical system of the liquid crystal panel is switched, some of the elements of the optical system corresponding to the switching are automatically switched, so that the video shooting mode and the projector mode are switched. There is also an excellent effect that no malfunction occurs.

An image display apparatus according to the present invention is an image display apparatus detachably mounted on the front surface of a projection lens of a video camera having a projector function, and includes a magnifying lens and projection light transmitted through the magnifying lens. Is provided with an odd number of reflecting mirrors that change the direction by approximately 90 ° and reflects the light, and a transmissive screen that forms an image of the reflected light.
By projecting the projection light with a reflecting mirror and forming an image on the transmissive screen, the formed image is horizontally reversed, and when viewed from the back side, it can be seen as a normal image, so it was done conventionally. It has an excellent effect that circuit means such as left-right inversion of a troublesome sweep of a video element are completely unnecessary.

Further, a hood is provided on the transmissive screen side so as to protect the transmissive screen and at least shields light from above so that the hood can be opened and closed, and a magnifying lens can be freely taken in and out of the hood. By doing so, there is an excellent effect that the transmissive screen can be easily seen.

[Brief description of drawings]

FIG. 1 is a perspective view of a video camera showing a state in which a light according to a first embodiment of the present invention is removed.

FIG. 2 is an enlarged view showing a cross section of a viewfinder portion of the embodiment and mounting a light.

FIG. 3 is an enlarged view showing a viewfinder portion of the embodiment in a cross section and a state in which a light is attached.

FIG. 4 is a perspective view showing a state in which the video camera of the embodiment is used as a projector.

FIG. 5 is a perspective view showing a state in which an image display device is attached to the video camera of the embodiment.

FIG. 6 is a perspective view of the video camera showing a state in which the light of the second embodiment according to the present invention is removed.

FIG. 7 is an enlarged view of the viewfinder portion of the same embodiment shown in cross section and attached as a video light.

FIG. 8 is an enlarged sectional view of a viewfinder portion showing a state in which the video camera of the same embodiment is used as a projector.

FIG. 9 is a perspective view showing a situation in which the video camera of the embodiment is carried.

FIG. 10 is an enlarged perspective view showing a light storage portion of the video camera according to the embodiment in a mobile phone.

FIG. 11 is a schematic cross-sectional view showing a first embodiment of an image display device according to the present invention.

FIG. 12 is an explanatory diagram for explaining a reflection state of projection light in the example.

FIG. 13 is a perspective view showing a second embodiment of the image display device according to the present invention.

FIG. 14 is a perspective view showing a state where the hood of the embodiment is opened.

FIG. 15 is a perspective view showing a usage situation of the embodiment.

FIG. 16 is a perspective view showing a third embodiment of the image display device according to the present invention.

FIG. 17 is a perspective view showing a state where the hood of the embodiment is opened.

FIG. 18 is a perspective view of the lower surface side showing a state where the hood of the embodiment is opened.

FIG. 19 is a bottom perspective view showing a state in which the hood of the embodiment is opened and the magnifying lens is taken out.

FIG. 20 is a schematic cross-sectional view of the same embodiment.

FIG. 21 is an explanatory diagram for explaining a reflection state of projection light in the example.

FIG. 22 is a perspective view showing a state where the hood of the embodiment is opened and the magnifying lens is taken out to look into an image.

FIG. 23 is an explanatory diagram showing a principle of visually confirming an enlarged image of the same example.

FIG. 24 is a perspective view showing another example of use of the video display device of the embodiment.

FIG. 25 is a schematic cross-sectional view of a screen attached to the back surface of the image display device of the same example.

FIG. 26 is a perspective view showing an example in which the same embodiment is used as a screen of a projector.

[Explanation of symbols]

 1 Video Camera Main Body 2 Lens Part 3 Microphone 4 Power Supply Part 5 Lid Part 6 Switch 7 Operation Button Group 8 Viewfinder 8a Slit Part 9 Eyecup 10 Light 11 Engagement Part 12, 14 Connection Terminal 13 Attachment Part 15 Lid Member 15a Flange Part 15b Cutout portions 15c 15d, 15e Skirt portion 16 Terminal portion 17 Speaker 18 Lens block 19 Focus adjustment portion 20 Switch 21 Stopper member 22 Drive board 23 Power supply 24 Backlight 25 Color liquid crystal panel 26 Frame 26a Working piece 27 Axis 28 Window portion 29 Protection Glass 30 Projector lens for projector 31 Eyepiece for viewfinder 32 Light source 33 Reflector 34 Condenser lens 35 Protective glass 36 Tilt adjusting means 37 Image display device 38 Axis 39, 47 Plane Mirror 40 Crank arm 41 Strap belt 42 Case 43 Non-slip 44 Pocket part 45 Mounting part 46 Magnifying lens 48 Transmission screen 48a Virtual image 49 Hood 49a, 49b Side plate 49c Shaft side edge 49d Notch 50, 54 Shaft 51 Groove 52 magnifying lens 53 plate member 53a knob portion 55 screen 55a polarizing plate 55b diffusing member

Claims (5)

[Claims] 1. A viewfinder having a built-in liquid crystal panel, wherein the viewfinder has two optical systems via the liquid crystal panel, and by moving the liquid crystal panel, a video camera function and a projector function are provided. A video camera characterized by at least attaching a light for a projector detachably. 2. The video camera according to claim 1, wherein the light for the projector can also be used as the light for the video by changing the mounting direction. 3. The video camera according to claim 1, wherein when the optical system of the liquid crystal panel is switched, a part of the elements of the optical system corresponding thereto is automatically switched. 4. A video display device detachably mounted on the front surface of a projection lens of a video camera having a projector function, wherein a magnifying lens and projection light transmitted through the magnifying lens are changed in direction by approximately 90 °. An image display device comprising an odd number of reflecting mirrors for reflecting the reflected light and a transmissive screen for focusing the reflected light. 5. A hood for blocking at least light from above is also provided on the transmissive screen side so as to protect the transmissive screen so as to be openable and closable, and a magnifying lens can be installed in and out of the hood. The video display device described in.