JPH08179227A - Magnified display device - Google Patents

Abstract

PURPOSE: To suppress an outer scenery to be impressed on the surface of a lens and to enhance the display quality of a displayed picture by arranging a plano-convex lens so that the surface thereof on a viewer side becomes a plane surface. CONSTITUTION: The plano-convex lens 12 for magnified display is arranged opposedly to the display surface of a display unit 11. The lens 12 is arranged so that the convex surface thereof faces the display surface of the display unit 11 and the plane surface side faces the viewer 13 side. Besides, smoke-tone mixing agent for lowering light transmissivity as much as about 30% is mixed in the lens 12. In such a case, since the plane surface side of the lens 12 faces the outside (the viewer 13 side), the outside scenery is suppressed to be impressed on the convex lens. Besides, since the smoke-tone mixing agent is mixed in the lens 12, the transmitted light quantity of the lens 12 is suppressed. As the result, since the transmitted quantity of external light in the direction of the display unit 11 is suppressed, the external light is prevented from being reflected on the display unit 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnifying display device in which a magnifying display lens is arranged in front of a display such as a CRT or LCD to magnify and display a display image (image) on the display.

[0002]

2. Description of the Related Art As this kind of conventional enlarged display device,
For example, as shown in FIG. 1, a plano-convex lens 2 is arranged on the display surface side of a display device 1 made of a cathode ray tube or liquid crystal so that the display image of the display device 1 seen by a viewer 3 can be projected.
It is possible to magnify the image by seeing through it, and it is expected that a large display image can be obtained while using a small display.

[0003]

However, in the magnified display device having such a conventional structure, the curved surface of one convex lens 2 arranged in front of the display 1 faces the viewer 3 side, that is, the convex lens. Since the convex curved surface 2 is oriented so as to be outside the display, the external scene is reflected on the convex curved surface, which causes the display image on the display 1 and the external scene to overlap with each other. There was a problem that it was hard to see.

When an attempt is made to magnify a display image with one convex lens, the size and thickness of the convex lens inevitably increase, the weight of the entire display device increases, and the display image is distorted. There was also a problem that the quality deteriorated.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and a first object thereof is to arrange one or a plurality of plano-convex lenses on the viewer side of a display. , A display device for enlarging and displaying an image displayed by the display device, and arranging the plano-convex lens so that the viewer's side surface is on the flat side to suppress the reflection of the outside scene on the lens surface, thereby displaying It is to improve the display quality of images.

A second object is to suppress the distortion of the magnified display image by combining a plurality of convex lenses, and to obtain the magnified display image excellent in visibility also by this.

A third object is to provide a light transmission amount regulating means for reducing the light transmittance of the plano-convex lens which is arranged closest to the viewer among the plano-convex lenses which are superposed on each other.
This is to reduce the reflection of external light and improve the visibility of the displayed image.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments shown in the drawings.

Embodiment 1 In FIG. 2, reference numeral 11 denotes a self-luminous display device such as a CRT or LCD, and a plano-convex lens 12 for magnifying display is arranged so as to face the display surface of the display device 11. There is.
The plano-convex lens 12 is arranged such that its convex curved surface faces the display surface of the display unit 11 and the plane side of the plano-convex lens 12 faces the viewer 13 side. The smoked admixture for reducing about 30% is mixed.

Thus, in this embodiment, the display 1
Since the plane side of the plano-convex lens 12 arranged on the front surface of No. 1 faces the outside (viewer side), the reflection of the outside scene on the convex lens is suppressed. In addition, since the smoke-like admixture is mixed in the plano-convex lens 12,
The transmitted light amount of the plano-convex lens 12 is attenuated, and as a result,
Since the amount of external light transmitted in the direction of the display is suppressed, external light is not reflected on the surface of the display, and the display quality of the display image on the display is significantly improved. In addition, since the smoke admixture is mixed in the plano-convex lens 12 to attenuate the transmitted light amount, when the display on the display is not displayed, the inside of the plano-convex lens cannot be seen and an effective black face type display is obtained. To be

Embodiment 2 In FIG. 3, in this embodiment, a display image by a self-luminous display device 11 such as a CRT or LCD is reflected by a reflecting mirror 14 toward a viewer 13 and this reflected image is magnified.
This is a structure for displaying 5 in an enlarged manner. Further, the magnifying glass 15 is composed of a combination of two plano-convex lenses 16 and 17, and is arranged such that the curved surfaces of the two plano-convex lenses face each other. The plano-convex lens 16 located on the side is the one in which a smoke-like admixture is mixed as in Example 1 to reduce the light transmittance by about 30%. The other plano-convex lens 17 is transparent.

As described above, also in this embodiment, since the viewer's side surface of the magnifying glass 15 is a flat surface, the reflection of the outside scene is suppressed. Further, since the plano-convex lens 16 on the viewer side is provided with the light transmission amount regulating means, the amount of external light transmitted through the magnifying glass is regulated, and the visibility is improved.

Further, in this embodiment, since two plano-convex lenses are combined, a magnified image with less distortion can be obtained, and accordingly, a magnified display image with good display quality can be obtained.

Embodiment 3 In FIG. 4, in this embodiment, a magnifying glass 15 is composed of two Fresnel lenses 18 and 19, and the Fresnel lens 18 is arranged outside so that its lens forming surfaces face each other. Is formed by mixing a smoked admixture.

Therefore, also in this embodiment, it is possible to obtain the same effect as that of the second embodiment, and further, since the magnifying glass 15 is formed of the Fresnel lens, a thin and lightweight magnifying glass can be obtained. You can By setting the vortex center of the Fresnel lens to the lens outer edge instead of the lens center, it is possible to eliminate the reflection of the standing wall of the Fresnel when observed off the lens optical axis and to make the vortex center inconspicuous. The quality can be improved.

Although the light transmission amount regulating means shown in each of the above embodiments is a smoke-like admixture mixed in the lens, it is not limited to this, and the plano-convex lens 12 or the magnifying glass 15 is not limited thereto. The object of the present invention is to provide a film for controlling the amount of light transmission on the outer surface of the lens, for example, by vapor deposition or coating, or to attach a film or a plate material capable of controlling the amount of light transmission to the outer surface of the plano-convex lens or magnifying glass. Can be achieved.

[0017]

As described above, according to the present invention, a plano-convex lens or a plurality of plano-convex lenses having a flat surface facing the viewer are provided in the display system path between the display and the viewer viewing the image displayed by the display. According to this, a magnifying glass which is a combination of plano-convex lenses is arranged, and the plano-convex lens or the plano-convex lens located on the viewer side of the magnifying glass is provided with a light transmission amount regulating means. Since the plano-convex lens or the magnifying glass has a flat side surface to the viewer, the reflection of the outside scene is suppressed. Further, since the plano-convex lens on the viewer side is provided with the light transmission amount regulating means, the amount of external light transmitted through the magnifying glass is regulated, and the visibility is improved.

Further, by combining a plurality of lenses, a magnified image with less distortion can be obtained and the display quality can be improved.

Further, if a Fresnel lens is used as the plano-convex lens, it is expected that the magnified display device can be made smaller and lighter.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a conventional enlarged display device.

FIG. 2 is an explanatory view showing an enlarged display device of the first embodiment of the present invention.

FIG. 3 is an explanatory view showing an enlarged display device of a second embodiment of the present invention.

FIG. 4 is an explanatory view showing an enlarged display device of a third embodiment of the present invention.

[Explanation of symbols]

11 ... Indicator 12 ... Plano-convex lens 13 ... Viewer 14 ... Reflective mirror 15 ... Magnifying glass 16 ... Plano-convex lens 17 ... Plano-convex lens 18 ... Fresnel lens 19 ... Fresnel lens

Claims (3)

[Claims] 1. A magnifying display device having a self-luminous display device and a plano-convex lens for enlarging and displaying a display image in a display system path of the display device, wherein a plane side of the plano-convex lens is a viewer side. The enlarged display device is characterized in that the plano-convex lens is provided with a light transmission amount regulating means. 2. A display system comprising a self-luminous display device, wherein
A magnifying glass characterized by arranging a plano-convex lens with curved surfaces facing each other, and arranging a magnifying glass in which a plano-convex lens arranged on the viewer side is provided with light transmission amount regulating means. Display device. 3. The magnified display device according to claim 2, wherein the plano-convex lens is a Fresnel lens.