Resin Forming/Molding Technology

Plastic lenses can be formed into complex shapes such as a complicated aspherical or flange shape that are difficult to form with glass materials. Forming with plastic contributes to higher productivity and weight savings.
Plastic lenses are utilized for various applications such as imaging optical systems, lighting optical systems for projection and diffusion with a free curved surface used for projectors, and automotive and low-profile Fresnel lenses.
With the recent advancement in plastic materials, plastic elements are utilized for lenses corresponding to a long wavelength band such as NIR (Near Infrared) for sensing and communication usage, cylindrical lenses, and the lens array for laser usage. In addition, a plastic lens element is formed as an optical element with aspherical lenses using material cured by ultraviolet rays and heat. Some of the challenges of plastic material, like thermal expansion and density variation due to heating and discoloration due to aging, have been solved by the evolution of material. Tamron produces value-added products for the world by creating a plastic lens that is durable in adverse environments and which previously was difficult to manufacture.
Furthermore, as a fusion of forming technology, integrating far infrared glass material with plastic material, and improving compatible optical lenses with transmittance and focus, Tamron proactively conducts technology development in a new realm.

Resin cylindrical lens (Array available)

Lightweight cylindrical lens

Resin cylindrical lens (Array available)

Cylindrical lenses (cylinder lenses) with semicylinder-shape that convert laser beam into laser light sheet are mainly used in optical equipment that require an accurate detection of object distance, position, and shape.

Tamron developed the aspherical cylindrical lens on both sides with lightweight resin to meet the needs of weight saving optical equipment. In addition to using highly precise molds with submicron tolerances, we also use our own original measurement algorithm to ensure highly accurate eccentricity (shift amount) on both sides.

Visible to SWIR range is available by selecting an appropriate resin material for a specified wavelength.

This cylindrical lens is suitable for optical equipment and measuring apparatus requiring a high accuracy as well as lightweight properties. This technology can also be applied to microlens array.

Technical features


    Resin aspherical cylindrical lens on both sides


    High accuracy with submicron order (High accurate eccentricity)


    Wavelength range from visible to SWIR


    Microlens array available (Roll out the processing technology)

  • Lens shape image (just for illustrative purposes)

    Lens shape image (just for illustrative purposes)

  • Cross section image (just for illustrative purposes)

    Cross section image (just for illustrative purposes)

Examples of applications

  • Autonomous driving and delivery robot

    Autonomous driving and delivery robot

    Optical equipment (Optics for LiDAR) used as a high accurate positioning and detecting sensor

  • Measurement equipment

    Measurement equipment

    Measuring apparatus with a high accurate positioning and detecting

  • Projector

    Homogenized light by lens array shape(Irradiation・Projection・Diffusion)

※The photo is for illustrative purposes only.

Technical information to be released

In addition to the technologies introduced here,
Tamron leverages various technologies for product development to contribute to society.
In the future, Tamron plans to release the following technical information.