Resin Forming/Molding Technology

Plastic lenses are able to be formed into complex shape such as a complicated aspherical and flange shapes which are difficult to be formed with glass materials, this contributes to higher productivity and weight savings.
Plastic lenses are utilized for various applications such as imaging optical system, lighting optical system for projection and diffusion with a free curved surface used for projector and automotive and low-profile Fresnel lens.
Recently, advancing plastic materials, plastic lens is utilized for lens corresponding to a long wavelength band such as NIR(Near Infrared) for sensing and communication usage, cylindrical lens and lens array for laser usage. In addition, plastic lens is formed as optical element with aspherical lens using material cured by ultraviolet rays and heat. Some of the challenges of plastic material such as thermal expansion and density variation due to heating and discoloration due to aging have been solved by evolution of material. Tamron produces value-added products to the world by creating a plastic lens endurable in adverse environment which used to be difficult to be manufactured.
Furthermore, as a fusion of forming technology, integrating far infrared glass material with plastic material and improving compatibly optical lens with transmittance and fucus, Tamron conduct proactively 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

  • FEATURE 1

    Resin aspherical cylindrical lens on both sides

  • FEATURE 2

    High accuracy with submicron order (High accurate eccentricity)

  • FEATURE 3

    Wavelength range from visible to SWIR

  • FEATURE 4

    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 and to contribute to society.
In the future, Tamron plans to release the following technical information.

  • TECHNOLOGY 1

    Thin Fresnel lens for infrared cameras

    Thin Fresnel lens for infrared cameras incorporating silicon wafer and high-density polyethylene composite lens

Feel free to contact us

We look forward to putting Tamron technologies to work within your business.

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