KR200252576Y1 - Image enlargement device of the television - Google Patents

Abstract

The present invention enlarges the image of the television using only the brightness of the television itself, without using a separate lamp like a projector, and enlarges the image on the screen in homes, public institutions, hospitals, and other educational institutions to view the television image on a large screen. It relates to an image enlargement device of a television.

The present invention is a device that allows to enlarge and view the image of the television, a conventional television with a plurality of locking jaw is fixed on the top, and a plurality of locking holes that can be fixed to the locking jaw is fixed to the top The first enlarged body and the first enlarged body are installed to be moved back and forth, and the first lens and the second lens are fixed to the opposite sides at predetermined intervals, and the predetermined distances are fixed to the first and second lenses (0.25). The toothed surface is formed of a second enlarged body which is arranged to be disposed on the television and the screen, respectively.

Description

Image enlargement device of the television

The present invention relates to an image enlargement apparatus of a television, and in particular, to enlarge the image of the television using only the brightness of the television itself, without using a separate lamp like a projector, and to display the image on the screen in homes, public institutions, hospitals, and other educational institutions. Zoomed in so that you can watch television images on a large screen.

Recently, large screen televisions are preferred, and large screen televisions are widely used in public places as well as general homes.

However, such large televisions have a drawback in that the manufacturing cost increases, a lot of space is required for installation in a home or a public place, and a lot of electricity is used, which causes a burden on the use.

In order to solve this drawback, the conventional proposal was to enlarge the screen of the television so that the image of the television can be projected on a large screen (aka projector). In this case, a separate projector lamp and an expensive lens must be used. There was a flaw.

The present invention is to solve such a conventional problem, an object of the present invention is to close and secure a device capable of enlarging the image on the television screen to enlarge the image of the television on the screen without using a separate lamp, etc. The present invention provides a TV image enlargement apparatus that can project the effect of a large television even with a small telephony.

1 is an exploded perspective view of an image enlargement device of the present invention

2 is a view showing the overall installation state of the subject image expansion device

3 is a cross-sectional view of the subject innovation lens.

<Description of Signs of Major Parts of Drawings>

1: television 2: jam jaw

3: catching mouth 4: first enlarged body

5: 2nd magnification main body 5A: 1st lens

5B: Second lens 6: Screen

The present invention for achieving the above object is fixed to the television screen side is provided with a plurality of image magnification main body having a fixing means for concentrating and projecting the screen, and the image magnification main body of the inside of the image magnification body at regular intervals It is characterized by including two Fresnel Lens (Fresnel Lense) for enlarging the image of the television.

A feature of the present invention is that one of the two lenses is disposed so that its tooth face faces toward the television, and the other lens is arranged so that its tooth face faces toward the screen.

Another feature of the present invention is characterized in that the circle of the lens is formed with a predetermined circle depth at an interval of 0.25.

Another feature of the present invention is to install a third lens in addition to the first and second lenses, the third lens between the first lens and the television to receive the brightness of the television as it is, the image of the television in a much brighter state It is characterized in that it is made to enlarge and project.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a schematic configuration of the present invention, a conventional television (1) having a locking jaw (2) is fixed on the top, and a locking hole (3) that can be fixed to the locking jaw (2) is fixed at the top The first magnified body 4 and the first magnified body 4 are movable to the inside, and the first lens 5A and the second lens 5B are fixed at predetermined intervals on both sides thereof and fixed to the outside. It is configured to include a second enlarged main body 5 coupled to be movable through the handle portion 5C, the screen 6 is provided at a predetermined distance on the second enlarged main body 5 side.

However, since the latch 3 is usually slightly inward from the edge of the television screen, it is installed to be coupled to the string for a perfect close contact.

In addition, it is also possible to move the second enlarged body 5 back and forth through the gear portion provided therein by means of rotating the handle by means of rotating the handle portion in place of the fixed handle portion 5C.

Figure 2 shows the overall installation state of the image magnification device of the television of the present invention, the distance between the television 1 and the first lens 5A is 196mm, the distance between the lenses 5A and 5B is 262.8mm, second The distance between the lens 5B and the screen 6 is preferably 1903 mm.

3 shows a lens of the present invention, and a plurality of circles are formed at regular intervals (here, 0.25), and one side of the lenses 5A and 5B is formed in a fine tooth shape, respectively.

When described in detail with reference to the accompanying drawings an embodiment of the present invention configured as described above.

First, the present invention is preferably applied to the case of a normal television (for example, a 14-inch small television), the locking jaw (2) is provided on the upper end of the television 1, the first enlarged body (4) The upper end of the engaging hole (3) is installed so that the engaging opening (3) is fitted to the locking jaw (2), the first enlarged body (4) is firmly fixed to the front of the television (1).

In this case, the non-woven fabric may be used instead of the locking step 2 or the locking port 3, and the fixing means is not limited and may be applied in various cases.

Accordingly, when the television is screened while the first magnifying body 4 is fixed to the television 1, the second magnifying body 5 is movably coupled to the inside of the first magnifying body 4. Slide back and forth to adjust the image on the television to appear clearly on the screen, and at this time, you can adjust the screen size from 40 inches up to 200 inches.

Here, the first lens 5A and the second lens 5B are Fresnel lenses, and the material is made of PC (polycarbonate), acrylic, or PMMA, and the thickness of the lens is constant. It is composed of a plurality of concentric circles with the same curvature and may have the same refractive power as a thin but thick lens, and it can be seen that the hardness is high and transparent to have a good resolution.

The experiment shows that the PC has a refractive index of 1.59 and a light transmittance of 85-91%.

The Fresnel lens is a concentric circular shape with a flat design of a convex lens that provides a clear image to the viewer so that the center gain and the edge gain are uniform by horizontally moving all light sources magnified by the CRT or monitor. It is a lens.

As shown in FIG. 3, the first and second lenses 5A and 5B of the present invention are formed with a plurality of circles having a predetermined interval, wherein the depth y of the circle is expressed by Equation 1 as follows. Is done.

Where r is the radius of curvature, k is the conic constant, h is the concentric spacing, and a, b, and c are aspheric coefficients.

It can be seen that the lens formed by the above equation is represented by the empirical formula shown in Table 1 below.

h y y- 0.00 0 0 0.25 0.000146 0.000103 0.50 0.00438 0.000309 0.75 0.000730 0.000515 1.00 0.001021 0.000721 1.25 0.001313 0.000926 1.50 0.001605 0.001132 1.75 0.001897 0.001338 2.00 0.002189 0.001544

On the other hand, according to another embodiment of the present invention, another third lens is installed on the front surface of the first lens 5A to receive the luminance of the television 1 as it is and the first lens 5A and the second lens 5B. By projecting on the screen (6) through it will be able to see the image of the television in the state of brightness brightened.

Since the lens of the present invention is made of pure optical lens, it can be used permanently, and because the brightness of the television itself is used, the screen cannot be seen in the fully lit state, but the screen can be seen in the taillight or semi-illuminated state.

In addition, the performance of the screen 6 depends on the reflectance and the viewing angle, and in particular, in the case of an LCD projector or the present invention, it is important to select a correct screen to view a clear and lively screen.

As described above, the present invention has an effect of enlarging an image of a television by using the brightness of the television itself without using a separate lamp so that the image can be enlarged and viewed in a home or other necessary place.

In addition, the present invention has no phenomenon that the screen particles, which are disadvantages of low-cost projectors, do not appear on the screen as it is, and when the screen is enlarged, there is an effect that the screen of the television CRT can be displayed as it is without the phenomenon that the screen particles become coarse or narrow horizontally.

In addition, if the screen is enlarged more than 100 inches, the image quality is not degraded at all. Even in the screen size and the distance between the projectors, the distance between the projector and the screen is required more than 3m to see the screen larger than 100 inches. The effect is that you can see the screen.

In particular, there is an effect of showing a high resolution which is almost inferior to an expensive projector in resolution.

Claims (3)

In the device to enlarge and view the image of the television, A normal television with a plurality of locking jaws fixed at the top, A first enlarged main body having a plurality of locking holes coupled to an upper end thereof and fixed to the locking jaw; The first enlarged body is installed to be movable back and forth, and the first lens and the second lens are fixed to the opposite sides at predetermined intervals, and the tooth surfaces formed at the predetermined intervals on the first and second lenses are respectively And a second magnifying body which is arranged on the screen and is coupled to be movable through the outer grip part. The depth of each circle of the first and second lenses, The image enlargement apparatus of the television, characterized in that formed by. The apparatus of claim 1, further comprising a third lens in front of the first lens to increase the luminance of the television image.