東明技研 List of Products and Services

Tōmei Giken develops, manufactures, and sells laser interferometer systems under its own brand, Akion. The lineup includes the 4-inch laser interferometer "AK-100ZF," the 6-inch laser interferometer "AK-150ZF," and the 1.5-inch laser interferometer "AK-40ZF." It is capable of measuring and evaluating the polished surfaces of lenses from small to large diameters, flat glass, wafers, mirrors, etc., with high precision of λ/20. 【AK-100ZF Features】 ■ Ultra-compact 4-inch Fizeau-type laser interferometer system ■ Horizontal systems can also be manufactured ■ Capable of evaluating the surface accuracy of lenses and flat glass with a wide range of diameters/curvatures ■ Main unit dimensions: 338×190×254mm ■ Main unit weight: 14kg *For more details, please refer to the PDF document or feel free to contact us.

• Other inspection equipment and devices

"IFM" is an easy-to-use interference fringe analysis device that anyone can operate. It supports the new OS and has improved measurement accuracy through the introduction of new algorithms, offering analysis functions that meet various needs. Additionally, it can be retrofitted to your existing interferometer, enhancing older models. 【Features】 ■ Easy measurement operations for beginners using icon-based controls ■ Improved phase connection accuracy through the introduction of image processing technology ■ Addition of various analysis functions ■ Equipped with an auto-calibration feature ■ Capable of robust analysis against disturbances such as vibrations and air fluctuations *For more details, please refer to the PDF document or feel free to contact us.

• Other analyses

Our company can provide the design and production of standard holographic elements (CGH) in a short delivery time and at a low cost. We can manufacture not only aspherical surfaces but also special surfaces such as cylindrical and toroidal surfaces, or as spherical reference lenses (TS). Currently, we are limited to aspheres with a maximum diffraction angle of about 14°, corresponding to NA 0.24 (F/N 2.0). The delivery time can be within 3 months, including the design and production period of the CGH. 【Features】 ■ Capable of manufacturing special surfaces such as cylindrical and toroidal surfaces, as well as spherical reference lenses (TS) ■ Currently limited to aspheres with a maximum diffraction angle of about 14°, corresponding to NA 0.24 (F/N 2.0) ■ Delivery time can be within 3 months, including the design and production period of the CGH *For more details, please refer to the PDF document or feel free to contact us.

• Other electronic parts

Tomei Giken provides high-precision reference lenses with λ/20 accuracy compatible with our laser interferometer "Akion" and various other laser interferometers, available in 4-inch (Φ100mm) and Φ60 measurement diameters. The radius of curvature ranges from approximately -4,000 (concave) to approximately +5,000 (convex), allowing for the evaluation of surface accuracy for a wide range of curvature radii and diameters of the lenses being measured. We also accommodate custom design and manufacturing. 【Features】 ■ Radius of curvature: Approximately -4,000 (concave) to approximately +5,000 (convex) ■ Measurement diameter: Up to approximately Φ200mm ■ Surface accuracy: λ/20 ■ Mount: Compatible with various laser interferometer mounts ■ Custom design and manufacturing available *For more details, please refer to the PDF document or feel free to contact us.

• lens

The "High Precision TS λ/40" is a high-precision TS lens that allows for close-range measurement of large concave surfaces of R. By replacing the reference lens, measurement accuracy can be improved, enabling stable measurements. *For more details, please download the PDF or feel free to contact us.

• lens