CN201269967Y

CN201269967Y - Back projection splicing display screen without edge joint on external surface

Info

Publication number: CN201269967Y
Application number: CN 200820133015
Authority: CN
Inventors: 金跃刚; 管怀明; 王彦雄
Original assignee: Beijing Huanyu Lanbo Technology Co Ltd
Current assignee: Beijing Huanyu Lanbo Technology Co Ltd
Priority date: 2008-07-29
Filing date: 2008-07-29
Publication date: 2009-07-08
Anticipated expiration: 2018-07-29

Abstract

The utility model relates to a rear projection splicing display screen with no edge joint on the outer surface, which comprises at least two Fresnel lenses with relatively small size, a large-sized cylindrical lens, a piece of large-sized anti-glare optical glass, a piece of large-sized high-transparency ultra-white glass and a screen frame, wherein, butt-jointed surfaces among the Fresnel lenses are connected by coggea or cementation; the butt-jointed Fresnel lenses and the large-sized cylindrical lens are clamped between the large-sized anti-glare optical glass and the large-sized high-transparency ultra-white glass; the Fresnel lenses are fixed with the cylindrical lens by a positioning lock; the positioning lock is connected with the screen frame and fixed on the screen frame by a steel locking-function spring. The rear projection splicing display screen has the advantages of low cost, having no edge joint misplacement of the large-screen splicing screen under the temperature variation, and keeping the surface being leveling.

Description

The back projection splicing display screen of outside surface seamless

Technical field

The utility model relates to a kind of rear projection screen, especially a kind ofly forms by a plurality of Fresnel Lenses, and the super large rear projection screen of offscreen surface seamless.

Background technology

At present, by the video wall that the rear-projection casing is formed, the physics splicing seams is between 0.5-1mm, and the optics splicing seams also can only be controlled at this scope, therefore, in order to reduce splicing seams to a greater extent, invent a kind of many Fresnels rear projection screen, make its outside surface imaging layer not have splicing seams (promptly not having the physics splicing seams), thereby reach the optics splicing seams and be controlled at the superfine level of 0.1mm, during display image, behind the certain distance that frames out, can't see splicing seams is the place of purpose of the present invention at all.

The utility model content

The technical problems to be solved in the utility model provides a kind ofly to be made up of a plurality of Fresnel Lenses, and the super large rear projection screen of offscreen surface seamless.Make its outside surface imaging layer not have splicing seams (promptly not having the physics splicing seams), be controlled at the superfine level of 0.1mm thereby reach the optics splicing seams.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: it comprises that at least two reduced sizes are (as 50,60,67 inches) Fei Nier lens, a large scale cylinder mirror (as 100,120,134 inches), a large scale (as 100,120,134 inches) glare proof glass, large scale (as 100,120,134 an inches) high printing opacity ultra-clear glasses and a screen frame; Interface between the described polylith Fresnel Lenses is tenon butt joint (or bonding), polylith Fresnel Lenses after the described butt joint and large scale cylinder mirror are clamped between large scale glare proof glass and the high printing opacity ultra-clear glasses of large scale, described Fresnel Lenses and cylindrical mirror are fixed by positioning locking, described location lock is connected with screen frame by rigidity locking function spring, and is fixed on the screen frame; Described rigidity locking function spring has certain retractility, can be according to the expansion coefficient of screen and telescopic variation, thus the piece of inner Fei Nier lens can be abutted against together all the time, can not occur piece because of the variation of temperature and humidity and become big and dislocation.

When the utility model had solved the multi-screen splicing, splicing seams was bigger, and has physical-gap at the outside surface edge joint position, behind employing the present invention, and the splicing slit of having eliminated outside surface, during display image, the optics piece is superfine, and the piece display effect is present highest level.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail

Fig. 1 is the utility model splicing back one-piece construction synoptic diagram;

Fig. 2 is the A portion structure enlarged diagram of Fig. 1;

Fig. 3 is the B-B face cut-open view of Fig. 1;

Fig. 4 is the A portion structure enlarged diagram of Fig. 3;

Fig. 5 is the B portion structure enlarged diagram of Fig. 3;

Fig. 6 is the utility model projecting light path principle schematic;

Fig. 7 is a kind of embodiment structural representation of the present utility model;

Fig. 8 is the Mosaic face splicing synoptic diagram of Fresnel Lenses of the present utility model.

Embodiment

Shown in Fig. 1-8, with 2X2 (2 row 2 row) for example, the utility model comprise 1 large scale rear projection screen cylindrical mirror 1, be complementary undersized 4

Fresnel Lenses

2,3,1 large scale glare proof glass 4 of screen frame and the high printing opacity ultra-clear glasses 5 of large scale; Interface between described 4 Fresnel Lenses 2 is the tenon butt joint, described 1 rear projection screen cylindrical mirror 1 and Fresnel Lenses 2 are clamped between 1 large scale glare proof glass 4 and the 1 high printing opacity ultra-clear glasses 5 of large scale, described rear projection screen cylindrical mirror 1 and Fresnel Lenses 2 are fixing by location lock 6, described location lock 6 is connected with screen frame 3 by rigidity locking function spring 7, and is fixed on the screen frame 3; Described rigidity locking function spring 7 has certain retractility, can be according to the expansion coefficient of (organic) screen cylindrical mirror and (organic) Fei Nier lens and telescopic variation, thereby the piece of organic luxuriant and rich with fragrance Neil lens can be abutted against together all the time, the piece slit can not occur and change and inconsistent phenomenon, thereby influence the picture splicing effect.

Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give exhaustive to all embodiments.Everyly belong to the row that conspicuous variation that the technical solution of the utility model extends out or change still are in protection domain of the present utility model.

Claims

1, the back projection splicing display screen of outside surface seamless is characterized in that: it comprises the Fei Nier lens of at least two reduced sizes, a large scale cylinder mirror, a large scale glare proof glass, a high printing opacity ultra-clear glasses of large scale and a screen frame; Interface between the described polylith Fresnel Lenses is the tenon butt joint, polylith Fresnel Lenses after the described butt joint and large scale cylinder mirror are clamped between large scale glare proof glass and the high printing opacity ultra-clear glasses of large scale, described Fresnel Lenses and cylindrical mirror are fixed by positioning locking, described location lock is connected with screen frame by rigidity locking function spring, and is fixed on the screen frame.