Our aluminum optical lens heat sink barrel, also known as lens module housing with cooling fins, is a one-piece CNC machined precision optical structural part made from 6061 aluminum alloy. No assembly splicing. Adopting 5-axis and turn-mill composite CNC integrated machining technology, the whole part is directly milled from solid aluminum billet.

The upper cavity features inner steps, sealing grooves, mounting threaded holes and positioning pin holes to secure lens elements and spacers. The end face sealing groove realizes dust-proof and light-shielding performance. High positional tolerance control prevents lens eccentricity and image distortion. The core design lies in the middle dense cooling fins. These thin, long annular heat dissipation ribs are difficult to machine, prone to tool vibration and deformation during milling. We optimize cutting parameters and low feed rates to ensure uniform fin thickness without edge chipping, delivering excellent thermal conductivity. The bottom mounting flange is processed with multi-hole positioning. The flatness and parallelism of the reference surface are tightly controlled for stable assembly.

Our complete production workflow covers aluminum blank cutting, rough milling, semi-finish milling for inner cavity, flange and heat sink fins, finish milling of mating surfaces, threads and sealing grooves, deburring and ultrasonic cleaning. Hard anodizing in matte black is optional, widely used for optical components to eliminate stray light reflection, improve wear resistance and anti-corrosion. For optical requirements, inner walls are finished with high-gloss cutting without visible tool marks, removing reflective burrs to avoid stray light interfering with imaging.

We offer full-service support including 3D drawing review, process planning, prototype trial production, small batch and mass delivery. Our machining tolerance can reach ±0.01mm. We accept custom non-standard aluminum parts and complex cavity CNC machining by 3-axis, 4-axis and 5-axis equipment.

Key Features

• One-piece monolithic construction, no splicing, high structural rigidity
• Integrated annular cooling fins for high heat dissipation efficiency
• 5-axis / turn-mill composite CNC machining, ±0.01mm precision tolerance
• Inner cavity with sealing grooves, threaded holes and locating pin holes
• High-gloss inner surface finish, free of stray light reflection
• Optional matte black hard anodizing for anti-reflection, wear and corrosion resistance
• Strict ultrasonic cleaning for optical-grade cleanliness, no residual dust
• Custom dimensions, support prototype, small batch & mass production

Benefits

• Effectively dissipate heat generated by CMOS sensor and light source, avoid focal shift and blurred imaging caused by thermal expansion
• High-precision hole position control guarantees lens coaxiality and reduces image distortion
• Monolithic structure improves stability and avoids assembly gaps
• Matte black surface eliminates stray light interference to ensure stable optical imaging
• Strict flatness & parallelism of flange base, easy and reliable assembly into vision equipment
• Fast lead time for samples, flexible production volume from prototyping to large orders

Applications

• Machine Vision: telecentric lens, line scan inspection lens for PCB, lithium battery and high-speed visual inspection
• Laser vision modules & 3D structured light imaging lenses
• Industrial inspection and automation visual optical equipment
• High-power thermal imaging security lenses
• High-definition automotive imaging modules

Why Choose Us

We are a professional CNC precision parts manufacturer based in China, specializing in high-end custom precision components. Our service covers 3D drawing decomposition, process planning, toolpath programming to finished batch delivery. Every cutting trace reflects our pursuit of precision manufacturing.

We handle a wide range of materials including aluminum alloy, stainless steel, oxygen-free copper. Our factory serves multiple industries:

1. Consumer Electronics: housings & heat sinks for mobile, tablet, VR/AR and wearable devices
2. Automation & Industrial Equipment: jigs, fixtures, sliding bases, motor seats and sensor housings
3. Semiconductor & Vacuum Equipment: vacuum cavities, bases and inspection tooling
4. Medical Devices: surgical base, endoscope parts, medical instrument housings
5. Automotive Industry: new energy motor housing, battery plates, sensor brackets
6. Aerospace & UAV: lightweight aircraft structural components, drone frames
7. Optics & Optoelectronics: optical barrels, camera mounts, light source heat sinks
8. Telecommunication: 5G heat dissipation cavities, filter components
9. Robotics: robot joint shells, reducer housings, AGV structural parts
10. Instrumentation: testing equipment housings and precision gauge bases

We accept non-standard custom orders, provide free drawing evaluation, support prototype, small batch and mass production. Contact us to request a quote.

FAQ

Q1: What tolerance can you achieve for the optical lens heat sink barrel? A: Our CNC machining precision can reach ±0.01mm, meeting high requirements for optical assembly.

Q2: Can you do matte black hard anodizing for optical anti-reflection? A: Yes. Matte black hard anodizing is available, which suppresses stray light, improves surface hardness and corrosion resistance.

Q3: Do you support custom design and prototype samples? A: Yes. Send your 3D CAD drawing, we will review the design and provide process suggestion, support sample, small batch and mass production.

Q4: What file formats do you accept? A: STEP, IGES, SolidWorks, STP and other common 3D drawing files.

Custom CNC Machining Services

As a professional CNC machining factory & supplier, we provide one-stop precision custom manufacturing services from drawing analysis, process planning, CNC programming, prototype testing to mass finished product delivery.

✅ Machining capability: 3-axis, 4-axis, 5-axis CNC milling, turn-mill composite machining ✅ Materials: 6061/7075 aluminum, 303/304 stainless steel, oxygen-free copper, brass ✅ Tolerance: up to ±0.01mm ✅ Surface treatment: anodizing, hard anodizing, polishing, passivation, sandblasting ✅ Industries: optics, automation, robotics, medical, semiconductor, new energy, aerospace, telecommunication, consumer electronics ✅ Order range: prototype, small batch & large volume custom parts

Send your 3D drawings to get a fast quote for your custom CNC machined components.