tier-4-gp2y0d413k / google/gemma-4-e2b

```openscad
// Sharp GP2Y0D413K0F Distance Sensor Outline Model
// Coordinate System: Center of body is (0, 0, 0). +Z is up. +Y is front. Units are mm.

// --- Dimensions based on the provided datasheet outline ---

// Main Body Case Dimensions (Approximate bounding box based on diagram)
main_width = 17.5;         // Total width/length approximation
main_height = 4.15;        // Height approximation
main_depth = 3.8;          // Depth approximation

// Front Protrusion / Lens Case Dimensions (relative to the main body)
protrusion_width = 6.3;    // Width of the front protrusion
protrusion_length = 7.1;   // Length/depth of the front part

// Lens Placement and Size (Based on the diagram's internal structure)
lens_center_x = 0;         // Center alignment assumed at X=0 for simplicity
lens_center_y = protrusion_length / 2 + main_height / 2; // Y position of the front face

// Lens/Window dimensions (approximated based on typical layout and provided reference)
light_lens_radius = 3.1;   // Approximate radius for one lens
receive_lens_width = 4.15; // Approximate width for the receiver area

// PWB Dimensions (Underneath attachment)
pwb_width = main_width;
pwb_depth = main_depth - 0.1; // Allowing minimal space for mounting

// Connector Footprint (3-pin JCTC connection approximation)
connector_size_x = 5;
connector_size_y = 2;


// --- Modeling the Sensor ---

module sharp_sensor() {
    // 1. 本体ケース (Main Body Case - Carbonic ABS, Rectangular block centered at origin)
    color("gray") {
        cube([main_width, main_height, main_depth], center = true);
    }

    // 2. 前面に飛び出すレンズケース (Front Lens Case / Protrusion)
    // This part protrudes forward (+Y direction) and slightly upward/downward depending on exact geometry.
    translate([0, 0, -main_depth / 2]) {
        color("gray") {
            cube([protrusion_width, main_height, protrusion_length], center = true);
        }
    }

    // 3. 発光部レンズ (Light Lens - Circular Window)
    // Positioned on the front face of the protrusion.
    translate([protrusion_width / 2, main_height / 2, -main_depth / 2]) {
        color("cyan") { // Light source approximation
            cylinder(r = light_lens_radius, h = 1, center = true);
        }
    }

    // 4. 受光部レンズ (Receive Lens - Rectangular Window)
    // Positioned on the front face of the protrusion.
    translate([protrusion_width / 2 + light_lens_radius, main_height / 2, -main_depth / 2]) {
        color("yellow") { // Receive area approximation (rectangle)
            cube([receive_lens_width, light_lens_radius * 2, 1], center = true);
        }
    }

    // 5. 下部に取り付けられる PWB (Printed Circuit Board - Thin plate underneath)
    translate([0, 0, -main_depth / 2]) {
        color("darkblue") {
            cube([pwb_width, pwb_depth + 0.1, 1], center = true); // Slightly thicker than the case
        }
    }

    // 6. 底面の 3 ピンコネクタ (3-Pin Connector - Simplified footprint)
    translate([main_width / 2 - connector_size_x/2, main_height / 2 + 1.5, -main_depth / 2 - 0.5]) {
        color("red") {
            cube([connector_size_x, connector_size_y, 1], center = true);
        }
    }
}

sharp_sensor();
```