CN2439676Y

CN2439676Y - Edge belt mirror

Info

Publication number: CN2439676Y
Application number: CN 00240566
Authority: CN
Inventors: 王保安; 罗晓延
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-09
Filing date: 2000-10-09
Publication date: 2001-07-18
Anticipated expiration: 2010-10-09

Abstract

The utility model discloses an edge belt mirror, which makes use of a principle that light deviates by passing through a non-planar surface optical prism for realizing a corresponding triangular prism. The triangular prism is processed in the form of miniaturization and extended to form a special edge belt mirror. The edge belt mirror can carry out different altered designs for edge angles and can cause the light to disperse or concentrate. Another section light concentrates or generates total reflection when a part of light is dispersed. The range of variation is large. The utility model can be widely used for the lighting and the light condense of stage search lights, and the edge belt mirror can be controlled to realize the deflection of lighting, etc.

Description

Rib band level crossing

The utility model relates to a kind of optical element, especially relates to a kind of rib band level crossing that is used to throw light on.

In artificial light source illumination, its importance is an illumination uniformity, and it is even that the desk lamp of using always as people will seek out the illumination of workplace, also do not have fine solution at present both at home and abroad.Scientific experimentation shows, illumination is equally distributed good and bad, not only directly influence visual effect, and can produce notable difference to visual fatigue, scientific experimentation also shows, when the Illumination Distribution homogeneity reaches 60% when above, the adaptability of human eye and visual effect influence are little, and when its homogeneity less than 50% the time, the visual effect of human eye and visual fatigue can obvious variation and are increased the weight of.The existing domestic and international senior desk lamp that appears on the market is carried out test shows, do not have the illumination of a kind of desk lamp in Φ 400mm scope evenly can surpass 50%.As seen this drawback of artificial light source also is difficult to solve.

The purpose of this utility model provides the big rib band level crossing of all even sensitive surface of a kind of illumination.

For achieving the above object, the utility model rib band level crossing is when utilizing light to pass through the on-plane surface optical prism, deviation can take place, and the size of its deviation angle beta is relevant with the light of refractive index η that passes in and out prism two interplanar angle α, prism material and different wave length.The incident angle í of the incident light of deviation outgoing prism planes described here should be less than Brewster angle ì ₀According to this principle, just can calculate the triangular prism that corresponding angle is α by deflection of light angle β on demand.

In order to increase sensitive surface and to reduce the loss of light luminous energy in prism as far as possible,, promptly constitute a kind of special optical element with the triangular prism miniaturized of above-mentioned gained and with its continuous extension---rib band level crossing.

Above-mentioned rib band level crossing, according to single artificial light source, always high in the middle of its luminous energy and the Illumination Distribution, the edge is low, with the increase of its distance illuminance but by square speed double to weaken, it is even uneven illumination to occur, influences visual effect.This rib band level crossing can allow light generation deviation by changing rib band angle, the part that high-light-energy in the middle of the single artificial light source is distributed allows its deviation to the weak zone of edge luminous energy relative thin effectively, it is same as long as the conversion adjustment is carried out at rib band angle, light to the peripheral outgoing of light source can allow its light away from the centre that deviation inwardly takes place again, and those are fully used away from the light of showing up, effect is hopeless carries out interior gathering.Realized that rib band level crossing has played the effect of adjusting to the distribution of luminous energy illumination, thereby improved the homogeneity of illuminance.

Described rib band level crossing is according to the needs of using up, can carry out different change designs to corner angle, it both can allow divergence of beam, can allow convergence of rays again, when can allow simultaneously not only a part of divergence of beam but also allow another part convergence of rays or total reflection takes place, it changes very greatly, can be widely used in the optically focused of lighting and stage searchlight and control this rib band level crossing realization luminal art deflection etc.

Described rib band level crossing is made with the method for injection mo(u)lding usually, in order further to reduce the loss of luminous energy on the interface, can with go into, the corresponding light-transmissive film of exit facet plating, reach with few optical energy loss, and allow light that deviation takes place as required.

The utility model is explained as follows below in conjunction with accompanying drawing:

Fig. 1 is the synoptic diagram of the utility model rib band level crossing.

Fig. 2, Fig. 3 and Fig. 4 are the synoptic diagram of the utility model rib band level crossing embodiment.

Rib band level crossing as shown in Figure 1, on minute surface substrate 1, be provided with many triangular prisms 2 and form the rib band, rearrange the rib band level crossing of an integral body by some rib bands, corner angle on these rib bands can carry out different change designs to corner angle according to using up needs and obtaining better luminous energy distribution or obtain better optics picture element.

Fig. 2 is the embodiment that the utility model is used for the rib band level crossing of pointolite (as incandescent lamp).

Fig. 3 is the embodiment that the utility model is used for the rib band level crossing of band light source (as fluorescent lights such as straight pipe type, U, H types).

Fig. 4 is the embodiment that the utility model is used for the rib band level crossing of annular light source.

Show that by Fig. 2 and Fig. 3 embodiment when this rib band level crossing can be 300mm with the perpendicular light source centre-height, the illuminance uniformity of Φ 500mm scope intraoral illumination visual field improved 20%-30%; As adopt the illuminance uniformity behind the rib band level crossing of Fig. 4 embodiment can reach 80%.

Claims

1, a kind of rib band level crossing, it comprises: one together with the substrate that prism is arranged on the surface, and the prism on this substrate surface is used for light generation deviation, it is characterized in that: above-mentioned on-chip prism is a triangular prism.

2, according to the described rib band of claim 1 level crossing, it is characterized in that: the corner angle on the rib band are to design different angles with the deviation needs.

3, according to the described rib band of claim 1 level crossing, it is characterized in that: prism go out the corresponding light-transmissive film of plane of incidence plating.

4, according to the described rib band of claim 1 level crossing, it is characterized in that: substrate together with prism by the injection mo(u)lding manufacturing.