prismatic lens machining

Prismatic Lens Machining

Fine Shape as prismatic lens

INAC’s CNC machining center specializes in creating prismatic lens components with fine, intricate shapes. Our manufacturing capabilities enable the production of complex prismatic geometries that are essential for optical and lighting applications.

Material: Polycarbonate (PC)
Polycarbonate is a high-functional plastic, also called super engineering plastic among resins. Its transparency coefficient ranges from 85% to 90%, nearly matching glass. PC exhibits excellent heat resistance, equivalent to about 50 times that of acrylic resin, with heat resistance ranging from 250 to 266°F depending on usage.

Unique Transparency Treatment for Lenses
Although transparent polycarbonate turns cloudy white after the cutting process, INAC has established a unique process to restore it to full transparency. Our proprietary transparency treatment enables polycarbonate prototypes with excellent transparency without requiring manual polishing. Unlike acrylic resin which requires hand polishing to restore transparency after machining, polycarbonate can achieve superior transparency even for fine lens cut shapes that cannot be polished, making it ideal for intricate prismatic lens applications.

Prismatic Shape Capabilities
Fine prismatic shapes can be machined using our CNC machining center. The intricate faceted surfaces characteristic of prismatic lenses require precise tool paths and specialized machining techniques. INAC’s experience in transparent polycarbonate processing allows us to manufacture prismatic lens components that maintain both optical clarity and geometric accuracy.

Applications for Prismatic Lenses
Prismatic lens components manufactured by INAC are suitable for various applications including lens parts for equipment such as headlights, tail lights, light diffusion lens arrays, and other optical components where light manipulation through prismatic surfaces is required.

Low Cost and Short Delivery Time
By providing polycarbonate lens prototypes with excellent transparency without polishing, INAC achieves both low cost and short delivery time for prismatic lens manufacturing. Painting and plating decorations can be applied to polycarbonate lens components according to project specifications.

Please feel free to contact us for prismatic lens and transparent polycarbonate machining projects.
Our experienced designers offer support from concept through completion.

Fine Shape as prismatic lens​
Fine Shape as prismatic lens​
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STEP5: Quality Assurance and Precision Inspection

A quality inspection is performed. At INAC, where quality comes first, we use CMMs, gauges, and other equipment for precision checks.

STEP4: Post-Processing and Finishing

Finishing is done by removing the supports, polishing, and applying transparency treatment. It is also possible to paint and apply plating to the formed product.

STEP3: UV-Laser Print Formation (SLA Process)

Output: The product is formed by irradiating the liquid with a laser beam of UV light and laminating it. The conditions of the external environment, such as room temperature and humidity, must be maintained.

STEP2: Model Program Generation and Support Adjustment

A program for model formation is created. Depending on the shape, it may be necessary to adjust the degree of tilt and the position of the supports.

STEP1: CAD File Submission

Upload your CAD to our online quoting platform.

STEP 3: Rendering and Scene Integration

We can also handle exterior modeling and interior structure design based on illustrations. After creating the 3D models, we can create a rendering to fit a scene. We can deliver images even if we do not proceed with production.

STEP 2: Detailed Design and 3D Modeling

Once the design is determined, drawings and 3D models will be created. The structure will be examined, taking into consideration not only the external design but also functionalities such as mating and sliding.

STEP 1: Initial Design Consultation

The first step is a meeting to discuss the project. Drawings are not required for this meeting. We will create a design from a sketch based on the overall image and concept that you have in mind.

STEP5: Quality Assurance and Inspection

We perform quality inspections. At INAC, where quality comes first, we use CMMs, gauges, and other equipment for precision checks.

STEP4: Post-Casting Finishing

Vacuum casting materials are cured and then taken out of the silicone rubber mold. Then we perform finishing such as deburring and gating, and they are made into finish products.

STEP3:Material Injuction

Liquid casting material is injected into the silicone rubber mold in a vacuum environment.　

STEP2: Mold Preparation

The silicone mold is cut open into a male and female mold, and the master model is removed.

STEP1: Mold Creation

The master model is fixed to a wooden frame and silicone is poured to create a mold.