CN2219528Y

CN2219528Y - Large optical fibre display screen

Info

Publication number: CN2219528Y
Application number: CN 94247122
Authority: CN
Inventors: 朱镐
Original assignee: XI'AN COLOUR SCREEN HIGH-SCIENCE AND TECHNOLOGY ELECTRONIC Co
Current assignee: XI'AN COLOUR SCREEN HIGH-SCIENCE AND TECHNOLOGY ELECTRONIC Co
Priority date: 1994-12-03
Filing date: 1994-12-03
Publication date: 1996-02-07
Anticipated expiration: 2004-12-03

Abstract

The utility model relates to a large-sized optical fibre display screen, which is characterized in that an optical fiber bundle adopts contact type dense arrangement on one side of a face which receives light and adopts sparse arrangements on one side of the display screen. The arrangement positions of the optical fiber bundle on the display screen are corresponding to the positions of the optical fiber bundle on the light receiving surface one by one. The magnification of separation distance can reach two times to eight times. The display screen adopts the plastic optical fiber bundle, and has the advantages of small light loss, high brightness, real colors, small image distortion, low cost of manufacture, and easy maintenance, is provided with transition colors, can be made into a large-sized display screen with a few square meters or tens of square meters, can play video signals, and can be used as a large-sized advertising boards.

Description

The large-scale optical fiber display screen

The utility model relates to a kind of light transmitting fiber display screen.

The present rear-projection display screen that generally uses, if obtain enough big picture, light source must be put to 5 meters of display screens, according to light intensity formula E=L/r ²=1/25 * L=0.04L, light intensity has than high attenuation as can be known, does not reach due brightness.Tangible square frame is then arranged on the picture of screen test, cause discontinuous or every the sensation of splitting.Light emitting diode (LED) display screen 6 is blue coloured light etc. and do not have intermediate color for want of, so no true color, picture is stiff.Existing light transmitting fiber display screen, the sensitive surface of its fibre bundle and display surface all adopt uniform distances to arrange, so image does not generally have enlarge-effect.Usually people have a kind of technology prejudice, think that fibre-optic pixel is sparse more on the display screen, and aliasing is big more.With regard to certain limit, even draw back sizable distance between the fiber on the display screen, amplification ratio reaches 2～8 times, still has image effect preferably in fact, and distortion is very little, and this provides just for manufacturing large-scale optical fiber display screen may.

The purpose of this utility model is the above-mentioned shortcoming that will overcome prior art, and a kind of optical fibre display screen with amplification effect is provided, thereby makes the large-scale optical fiber display screen.

Solution of the present utility model is: fibre bundle is taked the contact dense arrangement in sensitive surface one side; And take sparse arrangement in display screen one side, and its arrangement position is corresponding one by one with the position on the sensitive surface, and spacing enlargement factor H is 2～8 times.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the spread pattern of fibre bundle in sensitive surface one side.

Fig. 2 is the spread pattern of fibre bundle in display screen one side.

Fig. 3 is the side view of above-mentioned display screen.

Referring to Fig. 1, fibre bundle 1 is closely arranged by row and row in sensitive surface 2 one sides, contacts with each other, and firmly sticks to one with glue, so that the spacing of fibre bundle is as far as possible little.Sensitive surface both can adopt the mistake row mode among the figure, also can adopt other forms such as in-line arrangement.Used fibre bundle 1 should adopt the plastic optical fiber bundle.

A luminous optical fiber is called a pixel on the fibre bundle display screen.Each pixel among Fig. 2 on the display screen is corresponding one by one with sensitive surface on the position, and promptly the pixel on the sensitive surface 1 is corresponding with 1 ＇ on the display screen, and 2 is corresponding with 2 ＇, A, B, C ... respectively with A ＇, B ＇, C ＇ ... corresponding, so analogize.Like this, utilize the principle of fiber optic conduction visible light, the figure on the sensitive surface just can reflect on display screen exactly.Institute's difference only is that the distance between pixel is bigger on the display screen, thereby image amplifies to some extent.Among the figure on the display screen on the distance L between two pixels and the sensitive surface ratio of respective distance d be the enlargement factor H of display screen, H=L/d.

Display screen 3 is an orifice plate by row and row arrangement, the corresponding layout with the optic fibre hole of sensitive surface in the hole on it.Penetrate an optical fiber in each hole, fix with glue.The fibre diameter of making large display screen is generally 1～3mm, and its spacing enlargement factor is 2～8 times.The Lights section of display screen should adopt high-brightness projection machine 4, to strengthen effect.Every optical fiber light-receiving end is accepted the light of what color, and display end is promptly emitted the light of same color, thereby in full accord with the color maintenance of mapped picture.

Fibre bundle 1 shown in Fig. 3 is the plastic optical fiber bundle.

This optical fibre display screen is made of the high brightness plastic optical fiber, and its light loss is only about 10%.Because optical fiber can make the light curve propagate, so light source can be put into apart from the nearer distance of display screen, make optical fiber short as far as possible, in 2 meters, light loss is very little, compares to 5 meters outer screens of back projection type and can significantly improve brightness.Plastic optical fiber material can be realized full spectrum decay, so can reflect the true color of picture.Display screen part at optical fiber on average has 30,000 pixels for every square metre, and each pixel of picture is corresponding one by one with sensitive surface, thus picture reflects on display screen accurately, true, do not have distortion.Adopt design of the present utility model can make the display screen of several square metres or tens of square metres, and have the brightness height, intermediate color is arranged, but broadcast video signal, all-weather, easy-maintaining, advantage such as cheap is suitable to large board.

Claims

1, a kind of large-scale optical fiber display screen comprises fibre bundle (1), sensitive surface (2) and display screen (3), it is characterized in that: fibre bundle (1) is the contact dense arrangement in sensitive surface (2) one sides; In display screen (3) one sides is sparse arrangement, and its arrangement position is corresponding one by one with the position on the sensitive surface, and spacing enlargement factor H is 2～8 times.

2, optical fibre display screen as claimed in claim 1 is characterized in that said display screen (3) is an orifice plate by row and row arrangement, and fibre bundle is fixed in the hole with glue.

3, optical fibre display screen as claimed in claim 1 or 2 is characterized in that said fibre bundle (1) is the plastic optical fiber bundle.