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Constant Measuring Instrument Product List

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High-precision optical constant measurement device

A measuring device that can measure effective focal length, back focus, MTF (on-axis), radius of curvature, and eccentricity (transmission, reflection) for small-diameter lenses with a single unit.

Depending on the measurement, you can easily select the reticle (measurement chart) and program for automatic measurement. The measurement accuracy for each measurement complies with international standards, ensuring absolute accuracy and stable repeatability. The optical system of the device is simple and robust, designed to be maintenance-free. For more details, please contact us or refer to the catalog.

  • Optical Measuring Instruments
  • Other measurement, recording and measuring instruments
  • Constant Measuring Instrument

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Optical constant measurement device for intraocular lenses (for mass production)

An automatic optical constant measurement device for intraocular lenses intended for use in mass production environments.

This is a production model equipped with a 9-axis automatic mechanism for measuring the optical constants of intraocular lenses, including XY stage, focus adjustment, reticle exchange, objective lens exchange, aperture change, corneal lens switching, wavelength switching, and collimator rotation, all of which can be controlled by dedicated software to fully automate any measurement task. (Compliant with EN/ISO11979)

  • Optical Measuring Instruments
  • Constant Measuring Instrument

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Optical constant measurement device for intraocular lenses (for research and development)

Optical constant measurement device for intraocular lenses for research and development.

It is specialized in the analysis of single intraocular lenses for research and development purposes. This device can measure key parameters of all types of lenses. (Compliant with EN/ISO 11979)

  • Optical Measuring Instruments
  • Constant Measuring Instrument

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Tohoku University Technology: Method to measure independent elastic modulus without restriction on material type, form and measurement environment : T22-140

Possible to measure 9 independent elastic modulus in a single vibration experiment and analysis without sample machining or surface treatment

The measurement of elastic modulus, which is a fundamental parameter, is essential to characterize the material property. As an example of object with a simple linear shape, such as a stick, the elastic modulus can be obtained experimentally by tensile testing.  Today, a wide variety of object with complex shape can be formed due to the recent development of 3D printer technology. On the other hand, the elastic modulus of such object with complex shape having mechanical anisotropy, was difficult to simply measure by the conventional method.  This invention is about a simple method for measuring elastic modulus of object with complex shape having mechanical anisotropy. This invention compares at first the vibration mode obtained experimentally by the object resonance frequency using ultrasonic resonance method, with the estimated vibration mode. Then, the elastic modulus is determined after the inverse analysis so that the estimated vibration mode matches the experimental value. The elastic modulus is determined with high precision by applying an algorithmic tip to this comparison. The most significant feature of this measurement method is its simplicity since it requires only one vibration experiment and analysis to measure the 9 independent elastic modulus.

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Photoelastic constant measurement device "PEL"

Supports two types: disc compression and film tension! Used for analyzing the critical stress of materials.

"PEL" is a measurement device that applies external stress to the test sample to induce a refractive index and measure the photoelastic constant. The photoelastic constant is a material-specific value used for analyzing the critical stress of materials. Additionally, you can select the optical system and the stress mechanism applied to the sample according to your requirements, and the fixtures can be customized to match the sample shape. 【Features】 ■ Applies external stress to the test sample to induce a refractive index and measure the photoelastic constant ■ The photoelastic constant is a material-specific value used for analyzing the critical stress of materials ■ You can select the optical system and the stress mechanism applied to the sample according to your requirements ■ Fixtures can be customized to match the sample shape *For more details, please refer to the PDF document or feel free to contact us.

  • Optical Measuring Instruments
  • Other CAD related software
  • Constant Measuring Instrument

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