From: Lukáš Jiřiště <redacted>
Date: Wed, 12 Aug 2026 16:07:46 +0000 (+0200)
Subject: First version of lens holder
X-Git-Url: https://git.ljiriste.work/?a=commitdiff_plain;h=d129ada6594fedaa9b02c04ddf807fc07fad2941;p=telescope.git

First version of lens holder
---

d129ada6594fedaa9b02c04ddf807fc07fad2941
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1567411
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.stl
diff --git a/telescope.scad b/telescope.scad
new file mode 100644
index 0000000..bdbe608
--- /dev/null
+++ b/telescope.scad
@@ -0,0 +1,62 @@
+$fn = 20;
+
+hole_slope = 0.037;
+hole_size = 12;
+
+wall_thickness = 5;
+
+screw_diameter = 3;
+
+frame_thickness = 5;
+frame_height = 20;
+
+compliance_length = wall_thickness + sqrt(2) * hole_size + 20;
+compliance_thickness = 2.5;
+
+holder_height = frame_height + 2 * wall_thickness;
+holder_length = compliance_length + 2 * wall_thickness + frame_thickness;
+holder_width = hole_size * sqrt(2) + 2 * wall_thickness;
+
+epsilon = 0.1;
+
+module holding_hole()
+{
+	height = holder_height + 2 * epsilon;
+	translate([hole_size / sqrt(2) + wall_thickness, holder_width / 2, -epsilon])
+		rotate(45, [0, 0, 1])
+			linear_extrude(height = height, scale = 1 - hole_slope * height / hole_size)
+				square(hole_size, center = true);
+}
+
+module frame_hole()
+{
+	translate([holder_length - wall_thickness - frame_thickness, -epsilon, wall_thickness])
+		cube([frame_thickness, holder_width + 2 * epsilon, frame_height]);
+}
+
+module compliance_hole()
+{
+	translate([0, (holder_width - compliance_thickness) / 2, -epsilon])
+		cube([compliance_length, compliance_thickness, holder_height + 2 * epsilon]);
+}
+
+module screw_hole()
+{
+	translate([wall_thickness / 2, holder_width / 2 - epsilon, holder_height / 2])
+		rotate(90, [1, 0, 0])
+			cylinder(holder_width + 2 * epsilon, d = screw_diameter, center = true);
+}
+
+module lens_holder()
+{
+	difference()
+	{
+		cube([holder_length, holder_width, holder_height]);
+		frame_hole();
+		holding_hole();
+		compliance_hole();
+		screw_hole();
+	}
+}
+
+lens_holder();
\ No newline at end of file