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To keep up with the fast‑changing needs of the electro‑optics industry, LTCT has developed a complete line of high‑performance diamond tools. Each tool is made from top‑grade natural single‑crystal diamond, shaped with advanced grinding techniques and verified by precision geometric measurement. Every cutting edge is inspected under 800× magnification to ensure it’s completely defect‑free—a level of quality that makes nanometer‑level surface finish possible. We use only flawless diamonds, which means longer tool life and far less risk of edge chipping or cracking.
To keep up with the fast‑changing needs of the electro‑optics industry, LTCT has developed a complete line of high‑performance diamond tools. Each tool is made from top‑grade natural single‑crystal diamond, shaped with advanced grinding techniques and verified by precision geometric measurement. Every cutting edge is inspected under 800× magnification to ensure it’s completely defect‑free—a level of quality that makes nanometer‑level surface finish possible. We use only flawless diamonds, which means longer tool life and far less risk of edge chipping or cracking.
An ultra‑precision single‑point diamond turning tool uses a single‑crystal diamond as its cutting edge for machining at the highest precision levels. The nose radius can be tailored anywhere from 0.001 mm to 100 mm, and the form accuracy can reach better than 0.03 μm. Geometric details are designed flexibly to meet specific application needs.
These tools are mainly for ultra‑precision turning of non‑ferrous metals and polymers. They deliver mirror‑like finishes, giving work pieces outstanding dimensional accuracy and surface smoothness. They’re especially vital for creating micro‑structured surfaces—think diffractive optics, Fresnel structures, and lens arrays.
Litian Century develops precision diamond tools for the ultra-precision machining of electro-optical components. Our tooling solutions are used to manufacture mobile phone lens molds, infrared lenses and mirrors, optical film drums, and high-precision metal parts. Each tool can be customized according to the workpiece material, component geometry, machine interface, surface finish requirement, and machining conditions.
Camera resolution and image quality depend heavily on the dimensional accuracy and surface quality of the lens mold. Even minor form errors or surface defects can affect the performance of the finished optical lens.
Our single crystal diamond tools are designed for the ultra-precision machining of mobile phone lens molds, helping manufacturers achieve accurate profiles, sharp features, and optical-quality finishes. We work closely with machine tool manufacturers and customers to match the tool geometry, machine interface, and cutting parameters to specific mold requirements.
Infrared optics are widely used in thermal imaging, defense, aerospace, automotive sensing, security systems, and industrial inspection. These applications require lenses and mirrors with precise geometries and consistently low surface roughness.
Because infrared optical materials vary significantly in hardness, brittleness, and abrasiveness, the diamond tool must be selected for the specific material and machining objective. Litian Century provides optimized tool geometries and diamond grades to support stable cutting, longer tool life, fewer tool changes, and reliable surface quality throughout the machining cycle.
Optical film drums are used to produce large-area microstructured films for displays, lighting, imaging, and other optical applications. During production, diamond tools machine fine grooves or microstructures onto the drum surface, which is then used to replicate the pattern onto film in high volumes.
The cutting edge must maintain its geometry and sharpness across the entire drum surface—and, in some processes, through multiple machining passes. Litian Century offers natural and synthetic diamond tool options engineered for high wear resistance, consistent groove geometry, and extended service life in optical film drum machining.
Single crystal diamond tools can produce exceptional dimensional accuracy and mirror-like surface finishes on compatible non-ferrous metals and plated materials. When used with an ultra-precision machine equipped with an air-bearing spindle, these tools are suitable for manufacturing high-accuracy components for aerospace, defense, electronics, optical, and scientific applications.
Typical machinable materials include aluminum alloys, copper alloys, brass, and electroless nickel-plated surfaces. With the correct tool geometry and cutting parameters, diamond turning can reduce or eliminate secondary polishing while delivering excellent form accuracy, low surface roughness, and repeatable machining performance.
Our electro-optical diamond turning tools are primarily designed for suitable non-ferrous metals, mold coatings and optical polymers. Our single point diamond turning tools efficiently machine the following materials:
◆ Aluminum and aluminum alloys
◆ Copper and copper alloys
◆ Brass
◆ Gold and other suitable non-ferrous materials
◆ Electroless nickel-plated mold inserts
◆ Selected electrolytic nickel applications
◆ PMMA
◆ Polycarbonate
◆ Optical-grade plastics
◆ Other machinable polymer materials
Material composition and coating properties should be confirmed before tool design. Ferrous materials and certain hard or brittle optical materials may require a specialized machining process rather than conventional diamond turning.
Manufacturing of ultra-precision lens molds for smartphone cameras. The resolution and imaging quality of camera lenses are directly determined by mold accuracy. As smartphone camera resolutions continue to increase, our tools meet the most demanding mold specifications.
Vehicle Cameras: High-precision optical lens molds for advanced driver-assistance systems (ADAS)
LED Lighting Systems: Automotive lens molds, reflector molds
HUD Displays: Free-form mirror machining
Endoscope Lenses: Micro-optical lens molds
Ophthalmic Devices: Intraocular Lens (IOL) and Contact Lens molds
Surgical Instruments: Precision optical inspection components
Infrared Optics: Infrared lenses and reflectors for defense, security, and thermal imaging applications
Lighting Systems: LED lighting covers, traffic signal light covers
Micro-structured Optics: Light guide plate molds, Fresnel lens molds
Film Rollers: Roller molds for producing large-scale micro-structured optical films, the most economical method for mass-producing optical film
Our diamond turning tools are available with the following customizable parameters:
Diamond Turning Tools for Electro-optics Industry | Arc Turning | Sharp Point Turning | Boring | Grooving | |
| Diamond Types | Natural Diamond | Yes | Yes | Yes | Yes |
| Synthetic Diamond | Yes | Yes | Yes | Yes | |
| Minimum Radius | 0.001mm | NA | 0.2mm | 0.02mm(width) | |
| Maximum Radius | 10.0mm | NA | 10.0mm | 4mm(width) | |
| Arc | 1° to 160° | NA | NA | NA | |
| Included Angle | 20° to 179° | 30° to 160° | 20° to 90° | 2° to 90° | |
| Rake Angle | -45° to 3° | 0° | +3° to -35° | -35° to 0° | |
| Clearance Angle | 3° to 24° | 3° to 20° | 3° to 20° | 3° to 20° | |
| Cutting Edge Waviness | 2.0μm to 30nm | NA | 2.0μm to 30nm | NA | |
| Holder | Solid Shank | Yes | Yes | Yes | Yes |
| Insert | Yes | Yes | Yes | Yes | |
| Shank Materials | Tungsten | Yes | Yes | Yes | Yes |
| Steel | Yes | Yes | Yes | Yes | |
| Molybdenum | Yes | Yes | Yes | Yes | |
| Shank Types | Square or Rectangular | Yes | Yes | Yes | Yes |
| Round | Yes | Yes | Yes | Yes | |
Other Sizes Available on Request | Yes | Yes | Yes | Yes | |
Litian Century employs cutting-edge facilities to produce and inspect our diamond tools. With over 20 years of experience, our technicians possess deep expertise in diamond craftsmanship. Continuous innovation keeps us ahead of the competition.
We offer both first-class natural diamond and advanced synthetic diamond, both essential for the superior performance and durability of our single crystal diamond turning tools. Select the ideal material for your specific needs. Leverage our innovations to ensure you're using highly efficient, reliable tools that minimize errors and lower production costs.
We review the workpiece material, coating, optical surface, component geometry, machine model and required finish.
Our technical team evaluates the nose radius, tool angles, cutting direction, diamond type, shank design and machine interface.
A tool drawing or specification is confirmed before production. Any critical tolerances or inspection requirements should be identified at this stage.
The diamond is selected, ground and assembled into the required holder. Tool geometry and cutting-edge condition are inspected before shipment.
Tools are securely packaged for international shipment. Re-lapping and repair evaluation are available for suitable tool designs.
Tool Clamping
· Handle the tool lightly when clamping
· Do not contact the diamond tip directly
· After removing the Diamond Turning Tool, place it back in the tool box immediately
· Do not leave tools exposed to avoid damaging the diamond
Tool Cleaning
· Wipe the diamond tips gently with a clean foam stick dipped in industrial alcohol
· Avoid excessive force or abrasive materials that could damage the cutting edge
① After-sales Services
We have professional after-sales service team and after-sales system which called "Litian Century After-sales System". This system is used to manage the information of after-sales maintenance products, and can realize the functions of inquiring the grinding progress, grinding cost and feedback of after-sales problems. Advantages of the system: "zero consultation, more time saving, more convenient, more efficient", users can log in at any time to check.
② Quality Assurance
The company is equipped with advanced inspection equipment and trained inspection personnel which assure us carry out inspections during each process. At the same time, every single tool can be sent to our customers after the professional inspection by Quality Control Center.
③ Repair Service
For the multi-way tools which can be repaired, we can bring your diamond tools back to "new tool" condition in a very short turnaround time. A after-sales service system is available which can let you know the condition of your repaired tools in real time.
④ Packages
We customize special packaging box for the tool, in line with the mechanical structure of the human body, that is, convenient disassembly and safe.
⑤ Delivery
We can arrange delivery your goods by air, DHL, FedEx and other ways your need.
Our products enjoy a great reputation for its good surface finish, high precision and complete product variety. We serve the customers from USA, Mexico, Germany, Belgium, Russia, South Africa, Egypt, India, Pakistan, Korea, Japan and all Southeast Asian countries.
Both can be used for ultra-precision optical machining. Selection depends on the required edge geometry, workpiece material, cutting distance, surface requirement and expected tool life. LTCT can recommend a suitable diamond type after reviewing the application.
Yes. Custom shank dimensions, cutting height, holder interface and cutting direction are available. Please provide the machine model, holder drawing or existing tool dimensions.
Sharp-point and micro-grooving tools are commonly used, but the correct tip geometry depends on the pitch, groove depth, included angle, material and tool path. A component drawing is required for final tool design.
Yes. Suitable optical polymers include PMMA, polycarbonate and other machinable plastics. Tool geometry should be selected according to the polymer, surface shape and required optical finish.
Conventional diamond turning is generally unsuitable for ferrous materials because the interaction between iron and diamond can cause rapid tool wear. Steel applications may require ultrasonic-assisted machining or another specialized process. Please provide the steel grade and machining requirements for evaluation.
Some tool designs can be re-lapped or repaired, depending on diamond size, edge damage, remaining material and tool geometry. LTCT will inspect the used tool before confirming repair feasibility.
