CN2305549Y - Side light source stripe luminous body - Google Patents

Abstract

The utility model relates to a side light source stripe luminous body providing a light source for a non self-emitting display screen or a facsimile machine CIS. The utility model is characterized in that the light source is only arranged on one side or both sides of the luminous body, which changes the former manner of array arrangement of decades of light source, and a plastic rod is used for guiding light. One side of a long axis along the plastic rod is provided with a light outlet slot. Transparent medium is coated on the light outlet slot to make each position along the axis of the slot emit homogeneous light or to make the depth or the space of the light outlet slot different or to make the depth and the space totally equal. The utility model has the advantages of simple design and simple production.

Description

Sidelight source strip illuminator

The utility model relates to the light source that a kind of non-self light emitting display panel is used and facsimile machine CIS uses.

Existing non-self light emitting display panel is used, the light source used of facsimile machine CIS particularly, its light source all is a strip, previously all adopt perpendicular to going out the striation major axis light-source type of arranging, this form go out striation along the major axis uniform light that is easy to get, but its needed light source number is many, with regard to CIS, generally need all to be 40 mostly with 20 to 40 light sources, this does not show its shortcoming to monochromatic CIS, but just there is a serious problem in colored CIS, be that cost is very high, because blue color light source price height, so much make the new illuminator that the enterprise of CIS all uses on exploitation CIS.What stand in the breach is some Japanese enterprises, it has developed the new illuminator of several forms, these new illuminators all adopt the side light-source type, promptly parallel light-source type with the light-emitting section major axis, have one-sided and the bilateral light-source type, light guidance board type is arranged, the leaded light bar type is arranged, two cover three-color light sources are only adopted in both sides like this, even one-sided employing one cover three-color light source, significantly reduced the use number of light source, the corresponding cost that also significantly reduced, and there is such shortcoming in the existing new illuminator of developing, design and manufacturing are difficult, it makes a kind of new illuminator of size, must must redesign, and it passes through the test of a large amount of complexity again when redesign.Can design and make a kind of illuminator of new form, its design and preparation method and technology all easily realize the illuminator of various sizes.

The purpose of the utility model sidelight source strip illuminator just provides a kind of new illuminator, and its design and make all corresponding simply all easily redesigns and makes the illuminator of different size.

Design philosophy and scheme that the utility model purpose realizes are as follows: any type of sidelight source strip illuminator, its principle all is total reflection when utilizing light to propagate from the optically denser medium to the optically thinner medium, so that light passes to the other end from an end, this is just the same with the optical fiber leaded light, take certain measure then, make along the axial light of propagating of illuminator constantly from spreading out of perpendicular to the certain face of the direction of axle, take to destroy total reflection condition, light is spread out of from the face perpendicular to the direction of axle, and crucial problem is exactly how to make the light that spreads out of from the face perpendicular to the direction of axle even.The utility model adopts pole leaded light strips, and along opening groove in certain zone, side of rod, light source can be similar to regards spot light as, and it gives off with cosine, and the light intensity near the light source end slot spreads out of weakens to the other end gradually.In order to be spread out of light uniformly, the method for processing is a lot, and one, groove depth and equate at interval an in addition additional LGP (the light source bar that a Japanese producer is produced is exactly in this way); Two, the degree of depth of groove from source ends to other end difference; Three, the interval difference of groove; Four, the degree of depth of groove and all identical at interval is coated with from the source ends to the other end then and applies the different transparent medium of thickness.The utility model adopts back three kinds of modes, and wherein the advantage of last a kind of mode is some more.

Below in conjunction with a specific embodiment the utility model is described, figure one is the schematic diagram of embodiment, and by figure one as can be known, the utility model sidelight source strip illuminator is made up of lamp guide 1, light source 2, light output groove 3, its key feature is, the degree of depth difference of light output groove 3; Or light output groove 3 is unequal along the interval of the side of lamp guide; Or the interval of light output groove 3 and the degree of depth all equate, but to the transparent medium of light output groove 3 coating, and the applied thickness of medium from source ends to lamp guide center difference, reduce gradually, the effect of the change in depth of this processing and groove or the interval variation of groove is the same, just it goes out according to experimental design easily, moreover, during the light-emitting section length variations, can not change the molding manufacture mould tool and the technology of lamp guide, only change coated technique and get final product, can shorten the lead time like this, and the trial-production funds etc.Its leaded light process is such, light source 2 electrified light emittings, import lamp guide 1 by union end earlier, because light output groove 3 transparent mediums that are shallow or big at interval or coating near light source 2 ends are thick, the corresponding light that spreads out of is just than the degree of depth of groove and all equate at interval and don't to add any processing less, and the light that the groove of back spreads out of increases with regard to corresponding.To the strip illuminator of one-sided light source, the other end has reflector 4, and its light that does not spread out of continues to spread out of from light output groove 3 in the backspace lamp guide 1 again; To the strip illuminator of bilateral light source, the processing of two end slots should symmetry.

More than be exactly design philosophy of the present utility model and embodiment, the use number that it has reduced light source has reduced cost, and its design and making are simple in addition, and certain popularization value is arranged.

Claims (3)

1, sidelight provided by the utility model source strip illuminator, it is made up of lamp guide 1, light source 2, light output groove 3, it is characterized in that: the degree of depth difference of light output groove 3; Or the interval of light output groove 3 is unequal; Or the interval of light output groove 3 and the degree of depth all equate, but to the transparent medium of light output groove 3 coatings.

2, according to the sidelight source strip illuminator that claim 1 provided, it is characterized in that: when adopting single side face light source 2, the other end of its lamp guide 2 has reflector 4.

3, according to the sidelight source strip illuminator that claim 1 provided, it is characterized in that: to the transparent medium of light output groove 3 coating from source ends to the attenuation gradually of lamp guide 1 center.

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