Patent ID: 11865784
Assignee: SHANGHAI FUSION TECH CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A light-curing printer display device, comprising:
a screen;
a light source assembly arranged on a back side of the screen,
the light source assembly comprising a plurality of Light Emitting Diode (LED) light sources independent of each other;

a shielding plate arranged between the screen and the light source assembly,
the shielding plate being provided with a plurality of light holes in the same quantity as the plurality of LED light sources, and
each of the plurality of light holes is arranged opposite to a corresponding LED light source; and

a controller electrically connected with the plurality of LED light sources,
the controller being configured to control at least one LED light source to emit light;

wherein:
a diameter of at least one of the plurality of light holes is, H
      ⁢
      1
     
     H
    
    ⨯
    2
   
   ⁢
   R
  
  ;
 

H1 is a first distance between an upper surface of the shielding plate and the plurality of LED light sources;
H is a second distance from the plurality of LED light sources to the screen;
R is a radius of a round light spot projected by at least one of the plurality of LED light sources through the at least one of the plurality of light holes; and
following constraint condition is satisfied:, H
   ⁢
   1
  
  <
  
   
    
     3
    
    2
   
   ⁢
   
    H
    .