diffuser-zsj-t29.scad

   1 // Diffuser for ZHISHUNJIA ZSJ-T29 LED flashlight (dx.com SKU #317226).
   2 infty = 100;
   3 eps = 0.01;
   4
   5 diaphragm = 0.5; // diaphragm thickness
   6 wall = 1.5;
   7
   8 ring_h = 12; // the height of the body
   9 ring_d = 34.3 + 1.0; // the lens ring diameter + tolerance
  10
  11 clip_h = 7.3 + 1.0; // height of the clip above the diaphragm
  12 clip_dist = 1.5;
  13 clip_size = 1.2;
  14
  15
  16 module diffuser() {
  17         difference() {
  18                 cylinder(r = ring_d/2 + wall, h = ring_h);
  19                 translate([0, 0, diaphragm])
  20                         cylinder(r = ring_d/2, h = ring_h);
  21                 for (angle = [0:120:360]) rotate([0,0,60+angle]) {
  22                         translate([0, 0, 20+clip_h])
  23                         rotate([0, 90, 0])
  24                                 cylinder(r=20, h=infty);
  25                 }
  26         }
  27         for (angle = [0:120:360]) rotate([0,0,angle]) {
  28                 intersection() {
  29                         hull() {
  30                                 translate([ring_d/2-clip_dist, -infty/2, clip_h])
  31                                         cube([infty, infty, clip_size]);
  32                                 translate([ring_d/2+wall/2, -eps/2, ring_h+wall])
  33                                         cube([eps, eps, eps]);
  34                         }
  35                         cylinder(r = ring_d/2 + wall/2, h = ring_h);
  36                 }
  37         }
  38 }
  39
  40 diffuser();
  41