Quality

Quality is Oshino’s top priority.
Oshino Lamps Limited is the home of the “OL = Oshino Lamps” brand, and we have been supplying lighting products to various industries around the world, earning the trust of our customers.
We place the highest importance on quality and take pride in our facilities and engineering capabilities, which enable us to deliver high-performance products that meet customer needs.

Sub-Miniature Lamps Division

Optical Engineering Division

ISO9001

We obtained QS-9000 and ISO 9001 certification in 1997 and have maintained ISO 9001 ever since.

ISO9001 Certificate

Sub-Miniature Lamps Division

Integrated In-House Production of Key Miniature Bulb Components in Japan

To ensure the quality of its own brand products, Oshino Lamps has long maintained an integrated production system — from component manufacturing to final inspection — within its own facilities.
Key components that determine lamp performance, such as filaments and glass bulbs, are manufactured in-house at our factories in Japan.
Additionally, we maintain a fully integrated production system covering lamp assembly, product assembly, and final inspection at our own facilities in Japan.

Kagoshima Factory
(Lamps major factory)

Inspection at Kagoshima Factory

Collaboration with Suppliers

In addition to products manufactured in-house, strict quality control of procured materials—such as glass components, wires, and bases—is essential.
Oshino Lamps has built and maintained strong partnerships with both domestic and international suppliers of materials and components over many years.

Glass tubes

Dumet wires

Plastic base, Metal base

Thorough Inspection and Product Evaluation System

All miniature bulbs are shipped only after undergoing inspection for specified criteria such as current value, brightness, surface scratches, and contamination.
Our domestic factories are fully equipped with a variety of testing instruments for lamp performance evaluation.
Filament analysis using electron microscopes is also conducted in-house.

Lighting on/off testing equipment

Environmental testing equipment、
Vibration testing equipment

Optical microscope system

Optical Engineering Division

Integrated In-House Production from Design to Mass Manufacturing

At Oshino Lamps, all stages—from product design and mold fabrication to mass production—are carried out at our own factory in Japan, enabling fast and consistent quality-focused operations.
In particular, we specialize in the design and production of 3D-shaped light guides, drawing on years of technical expertise.
Our facilities are equipped with injection molding machines ranging from 85 to 350 tons, supporting flexible, diversified production.
We also have the capability to mold complex and high-precision shapes using transparent resins such as PMMA and PC.
In addition, our production environment is maintained at a Class 10,000 cleanroom level.

Product Design

Luminance Simulation

luminance Simulation

Meeting Automotive Industry Quality Standards

Oshino Lamps supplies transparent resin lens components to both domestic and international automotive parts manufacturers, where quality requirements are exceptionally strict.
Our light guides and light source units are used in a wide range of automotive applications.
By consistently meeting high-level customer expectations, we continue to maintain and enhance the quality of our products.