CN2177313Y

CN2177313Y - TV Screen amplifying device

Info

Publication number: CN2177313Y
Application number: CN93236737U
Authority: CN
Inventors: 仲崇华
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-28
Filing date: 1993-04-28
Publication date: 1994-09-14
Anticipated expiration: 2003-04-28

Abstract

The utility model relates to a TV Screen amplifying device, which uses the principle of optical imaging of a spherical mirror. The utility model can conduct reflecting amplification towards a TV image, the TV image which is 13 cm to 14 cm in length can be amplified to 100 cm, the TV image which is 31 cm to 45 cm in length can be amplified to 100 cm to 200 cm, and the stereo perception and the color saturation of the TV image can be enhanced. The utility model is suitable for the screen amplification display of recreation activities, such as domestic cinemas, miniature computers, video recorders, electronic games, stereo-television sets, etc.

Description

TV Screen amplifying device

The utility model relates to the television image amplification sector, is specially adapted to the amplification of tv screen image.

Existing video screen magnifying glass adopts convex lens or Fresnel lens more, and image is positioned in the concave lens focus, produce and the television set homonymy, amplify the upright virtual image, be amplified to 31 centimetres 23 centimetres, 35 centimetres are amplified to 47 centimetres, and 47 centimetres are amplified to 55 centimetres etc.Because therefore the convex lens size must, increase the manufacturing process difficulty greater than phosphor screen, multiplication factor is restricted.Colour TV projector is the utilization convex lens, makes image between convex lens two focus length and focus, and to screen, the optics compound lens is very accurate, costs an arm and a leg with the television image enlarging projection.

To the objective of the invention is the view reception effect of watching television image in order improving, to provide compared with prior art, low price, multiplication factor is bigger, is applicable to a kind of video screen amplifying device that bright chamber is watched.

The present invention is achieved in that be in the screen amplifier of magnifying glass at one by concave mirror, adopts the combination of concave mirror or concave mirror and speculum, and in the time of in television image is positioned at two focus length, image becomes to amplify upright image by direct reflection.

Briefly narrate below in conjunction with accompanying drawing, concave mirror (1) is at materials such as glass, stainless steel, plastics aluminium sheets, adopt methods such as vacuum aluminum-coated, coating, polishing to form reflective surface on its surface, and be embedded on the aluminum alloy frame, support (5) is inverted T shape, and upper bracket (5) is fixed with the upper and lower frame of concave mirror.Concave mirror (1) is alike and right with video screen (2), spectators are in concave mirror (1) dead ahead, sight line is reflected on the screen through concave mirror (1), television set (2) moves forward and backward can be to the stepless amplification of image, because the visual angle is less, use rotation platform (6), A, the B part can relatively rotate, and makes things convenient for spectators freely to select concave mirror (1) or television set (2) to watch, for ease of watching, concave mirror turn forward 3 to 8 the degree, concave mirror can intercept the geometry that rectangularity is representative, can adopt wall-hanging, two kinds of versions of console mode, be fit to bore 40-250 centimetre, focal length 60-800 centimetre, 3 meters～6 meters of pinpointed focuses, multiplication factor is 3 to 9 times.

The present invention has the following advantages and effect: owing to adopt concave mirror reflection amplification mode, suit to make heavy caliber, and bigger multiplication factor is arranged, the luminance loss is little, is fit to bright chamber and watches, and makes simple, with low cost.

Accompanying drawing 1 is the concave mirror schematic diagram

1, concave mirror 5, support

Accompanying drawing 2 is television set and concave mirror combination schematic diagram

1, concave mirror 2, television set 5, support 6, rotating television frame

Accompanying drawing 3 is another kind of video screen amplifying device embodiment

1, concave mirror 2, television set 3, speculum 4, casing

Embodiment of the present utility model is by concave mirror (1), the image amplifying device that television set (2), rotation platform (6) are formed, see accompanying drawing (2), concave mirror is the concave mirror that adopts hyperbolicity, and promptly horizontal curved surface focus is short, be positioned at phosphor screen before, make television image between two times of focal lengths of concave mirror and focus, according to the spherical mirror amplification principle, through direct reflection, spectators can watch the anti-phase virtual image of level amplification by minute surface; After vertical curved surface focus is positioned at phosphor screen, make television image be positioned at the concave mirror focus, zoom into the upright virtual image through direct reflection.Be fit to bore at 60 centimetres to 200 centimetres, between 1 meter to 8 meters of focal lengths.Key problem in technology of the present utility model is to select vertical curved surface focus and horizontal curved surface focus, makes horizontal curved surface focal length equal 0.2～0.6 vertical curved surface focal length, and mobile television makes level, vertically amplification quantity is identical.

Another kind of embodiment of the present utility model is by concave mirror (1), TV (2), speculum (3), the image amplifying device that casing (4) is formed, when television image is positioned in concave mirror (1) focus, there is left and right sides phase place opposite problem in the virtual image of amplifying, can select for use the level crossing bigger slightly (3) to make speculum than video screen, by accommodation reflex mirror (3) inclination angle, television image is reflexed on the concave mirror (1), image phase remains unchanged, as Fig. 3, concave mirror (1) and the corresponding combining form of casing (4), television screen upwards, be inverted in the casing, have the rectangle window before the casing, the rear portion is provided with level crossing (3), and sight line reflexes on the screen through concave mirror (1) and level crossing (3); Perhaps by changing the line output sense of current, change television image left and right sides phase place, spectators watch by minute surface and amplify upright image.Be fit to bore 60-250 centimetre, focal length 60-800 centimetre, multiplication factor is 3 to 9 times.

The utility model is cheap, is fit to suitability for industrialized production, and good economic and social benefit is arranged.

Claims

1, a kind of video screen amplifying device, have magnifying glass (1), television set (2), support (5) and it is characterized in that magnifying glass (1) is a concave mirror, video screen is positioned in concave mirror (1) two focus length, and television image amplifies upright image through concave mirror (1) or concave mirror (1) with being reflected into of level crossing (3).

2,, it is characterized in that concave mirror (1) can intercept into the rectangle of 3:4 or 9:16 according to a kind of video screen amplifying device of claim 1.

3,, it is characterized in that said concave mirror (1) surface applied or be electroplate with one deck reflector layer according to a kind of video screen amplifying device of claim 1 or 2.