Overview of the Yamanashi Factory
The Yamanashi Factory of Oshino Electric was established in 2012.
Currently, the facility operates 18 molding machines and specializes in the production of transparent resin components.
Specialization in Transparent Resin Products
We specialize in molding transparent resins such as PMMA and PC, which are known for their strict manufacturing requirements.
Our factory is capable of producing complex and high-precision shapes, even with challenging product geometries.
By focusing exclusively on optical components made from transparent resin—such as light guides and lenses—we continuously accumulate know-how and expertise in advanced manufacturing.
Main Products:
- Automotive optical components (light guides, lenses, diffusers, LED light sources)
- Optical components for general industrial applications
Cleanroom Environment
Unlike most molding facilities, all molding machines are installed inside a cleanroom, ensuring a highly controlled and hygienic production environment.
We maintain a Class 8-equivalent cleanroom, minimizing contamination and significantly reducing the risk of defects caused by foreign particles.
High Quality
Under the "OL : Oshino Lamps" brand, we have delivered a wide range of products—mainly for aerospace and automotive applications—to customers both in Japan and overseas for many years.
Our strengths lie in our uncompromising commitment to quality, our ability to meet demanding customer requirements, and our advanced facilities and technical capabilities.
Transparent resin products PC
Transparent resin products PMMA
Production Process of Optical Components
1. Drying
Transparent resin pellets, which serve as raw material, are placed into a dryer to remove moisture.
2. Molding
The dried resin is fed into a molding machine and heated to approximately 230°C to 300°C.
Once melted into a liquid state, the resin is injected into a mold and allowed to cool and solidify over a set period.
3. Inspection
Finished products are placed onto trays and inspected by quality control personnel.
During this step, the products are carefully checked for scratches, contamination, or other defects.
4. Packaging and Shipping
After passing inspection, the products are packed into shipping cartons.
Items made from resins that require temperature control are stored in climate-controlled warehouses until shipment.
Design and tooling
Fully Integrated Production at Our Domestic Factory
Oshino has in-house departments dedicated to the design and development of optical components, including light guides and light conductors, as well as its own mold-making facility.
We utilize advanced CAE-based optical analysis and have extensive expertise specifically in optical component design and manufacturing.
With our design team, tooling workshop, molding facility, and assembly plant all operating in close coordination, Oshino provides rapid product launches and strong support for your new product development.
Technical Overview of Light Guides
Overview of Equipment at Yamanashi Factory
- Injection Molding Machines
- 18 units ranging from 30 to 350 tons
- Machining Centers
- 4 units, including 1 ultra-precision machining center: UVM-700C(H)
- Dimensional Measurement Equipment
- KEYENCE VK-X3000 – Laser Microscope
KEYENCE XM-T2200 – Contact-Type High-Precision 3D Measurement System
KEYENCE VL-500 – Non-Contact High-Precision 3D Measurement System
KEYENCE VR-5200 – 3D Surface Profiler
KEYENCE IM-6120 – Image Dimension Measurement System
- Optical Measurement Equipment
-
KONICA MINOLTA T-10MA – Illuminance Meter
TOPCON SR-UL1R – Spectroradiometer
Radiant Vision Systems ProMetric I (IC-PMI2) – Imaging Colorimeter and Luminance Meter
(As of September 2022)
Access
601-2 Shirai-cho Koufu City, Yamanashi Pref, 400-1502
TEL : +81(0)55-266-5515 FAX : +81(0)55-266-5516
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