pdf-page/gemini-3.1-pro / tier-4-gp2y0d413k

```openscad
// Sharp GP2Y0D413K0F Distance Sensor
// All dimensions in mm
// Center of the main case is at origin (0,0,0)
// +Z is up, +Y is front (lens side)

$fn = 64;

// --- Parameters ---
// 1. Main Case
case_w = 29.45;
case_h = 13.05;
case_d = 7.1;

// 2. PWB (Printed Wiring Board)
pwb_w = 29.45;
pwb_h = 1.2;
pwb_d = 7.1;

// 3. Connector
conn_w = 10.1;
conn_h = 4.65; // Total height 18.9 - 13.05(case) - 1.2(PWB) = 4.65
conn_d = 3.3;
// Connector position: based on bottom view, the center of the 4.15 opening 
// is 7.5 + 4.15/2 = 9.575 from the left edge.
conn_x = -case_w/2 + 9.575; 
// Aligned to the back (-Y) of the main case
conn_y = -case_d/2 + conn_d/2; 
conn_z = -case_h/2 - pwb_h - conn_h/2;

// 4. Lens Case (Protrusion)
// Width calculated to enclose both 7.2mm lens tubes
lens_case_w = 27.0; 
lens_case_h = 8.4;
lens_case_d = 6.3;

// Lens Tubes (Front-most 2mm protrusions)
lens_tube_w = 7.2;
lens_tube_h = 7.2;
lens_tube_d = 2.0;

// Lens Centers
lens1_x = -case_w/2 + 4.5;       // Left: Light emitter
lens2_x = lens1_x + 19.7;        // Right: Light detector
lens_case_x = (lens1_x + lens2_x) / 2;


// --- Modules ---

// 1. Main Case (Carbonic ABS)
color("#2c2c2c")
cube([case_w, case_d, case_h], center=true);

// 2. PWB
color("#2e472d")
translate([0, 0, -case_h/2 - pwb_h/2])
cube([pwb_w, pwb_d, pwb_h], center=true);

// 3. Connector
color("#e0e0e0")
translate([conn_x, conn_y, conn_z])
cube([conn_w, conn_d, conn_h], center=true);

// 3.1 Connector Pins (Simplified representation of JCTC 12001W90-3P-HF)
color("#a0a0a0")
for(i=[-1, 0, 1]) {
    translate([conn_x + i*1.25, conn_y, conn_z - conn_h/2 - 0.5])
    cylinder(h=1.0, r=0.25, center=true);
}

// 4. Lens Case Base
color("#2c2c2c")
translate([lens_case_x, case_d/2 + lens_case_d/2, 0])
cube([lens_case_w, lens_case_d, lens_case_h], center=true);

// 5. Light Emitter (Left)
// Tube
color("#2c2c2c")
translate([lens1_x, case_d/2 + lens_case_d + lens_tube_d/2, 0])
cube([lens_tube_w, lens_tube_d, lens_tube_h], center=true);

// Lens (Circular Window)
color("#1a1a2e")
translate([lens1_x, case_d/2 + lens_case_d + lens_tube_d, 0])
rotate([90, 0, 0])
cylinder(h=0.4, r=2.5, center=true);

// 6. Light Detector (Right)
// Tube
color("#2c2c2c")
translate([lens2_x, case_d/2 + lens_case_d + lens_tube_d/2, 0])
cube([lens_tube_w, lens_tube_d, lens_tube_h], center=true);

// Lens (Rectangular Window)
color("#1a1a2e")
translate([lens2_x, case_d/2 + lens_case_d + lens_tube_d - 0.2, 0])
cube([5.0, 0.4, 5.0], center=true);
```