Brightness improving structure of light-emitting module with an optical film surface layer

Brightness improving structure of light-emitting module with an optical film surface layer

  • CN 101,896,991 B
  • Filed: 11/30/2007
  • Issued: 10/29/2014
  • Est. Priority Date: 11/30/2007
  • Status: Active Grant
First Claim
Patent Images

1. a brightness improving structure for optical film surface layer luminescence component, is characterized in that:

  • it includes;

    One transparent shell, it is the ducted body of a hollow sphere, hollow part spherosome, spheroidal, and there is the first wall and the second wall that is positioned at relative position, and the first described wall has the first medial and lateral wall, and the second wall is adjacent at the first wall and have the second medial and lateral wall;

    One optical thin film, it is the multilayer film that a non-full angle has long-pass filtering functions, to be coated in first interior sidewall surface or outer side surface of described transparent shell the first wall, and account for the more than 30% of the first wall area, described optical thin film by least contain the ultraviolet light of fluorescence excitation or phosphorescent layer or the part of blue light or all light source reflect, and via described optical thin film, penetrate ejaculation by least containing the visible light source of visible wavelength in interior long-wave band;

    One illuminating part, it is a ball region or part ball region, be arranged on the inside of described transparent shell, make transparent shell and illuminating part be interval arrange and the two between be formed with a space, described illuminating part sends ultraviolet light or blue light, its be with at least one light-emitting diode that sends ultraviolet light or blue wave band or luminous tube or sparking electrode, be located at described illuminating part within;

    One visible photosphere, by fluorescence coating or phosphorescent layer, formed, to be coated in second interior sidewall surface or outer side surface of described transparent shell the second wall, by ultraviolet light or blue-light excited be visible light source, and the distance of described optical thin film and described illuminating part is greater than the distance of described visible photosphere and described illuminating part;

    On the reflector of described its circular arc of optical thin film, the A point of any point to the distance of the ball heart B of illuminating part is c, A is connected with B'"'"'s, be the normal at A point reflection angle, the distance that A point in reflector is projected to the tangent line place of described illuminating part outer peripheral edges is b, the radius r of described illuminating part, the incidence angle of the reflector A of optical thin film is set as α

    , and described incidence angle α

    is 0 degree to 60 degree, described illuminating part central point B is more than or equal to csc α

    * r to the distance c of reflector A, i.e. c >

    =csc α

    * r.

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