Medical care

OCT (Optical Coherence Tomography/optical interference tomography) uses near-infrared light laser and optical fiber technology to cause interference between the target and light reflected by the reflective mirror. In this manner, this method builds images by analyzing optical information. Compared to ultrasound, MRI (cross-sectional imaging that uses magnets and electromagnetic waves), and PET (positron emission tomography), the OCT probe can give higher resolution and allow observation of microscopic structures that is an order of magnitude smaller than ultrasound (several microns).
As the main part for OCT probe used for medical purposes (cancer and the inner wall of blood vessels) and industrial purposes (inside of paint and various nondestructive tests), SELFOC^® Imaging Lens contributes to get higher image quality.

Endoscope requires an objective lens that captures objects and a relay lens that transmits image information to a certain length.
SELFOC^® Imaging Lens is used as the objective lens of flexible endoscopes and rigid endoscopes, and SELFOC^® Rod Lens is used as the relay lens of rigid endoscopes. They play an important role in improving image quality of endoscopes.

Endoscope that was meant to examine the stomach is now a medical device that greatly contributes to innovations in gastrointestinal surgeries. Since it works as hands and eyes for physicians inside of the digestive tract and abdominal cavity, improvements to imaging performance (compatibility with HDTV and 4K) and smaller diameter are demanded for endoscope.
NSG is developing technology to handle issues associated with small image transmission systems including microscopes, and simplify assembly and installation of optical parts (objective lens).

Fogging on lens is a phenomenon where water drops form on the cover glass of the lens due to temperature difference between outside and inside of the cover glass or rapid pressure change, reducing the visibility by light scattering. It has a big influence on reading information for image.
By applying antifogging coating to the cover glass of endoscope and camera, fogging can be suppressed, ensuring high quality images.

Super-Low Reflective Coating is liquid coating with low angular dependence and high antireflective performance.
It can be coated on substrates with various shapes from plane to curved surface.
High quality imaging with limited reflection becomes possible by applying the coating to lenses and cover glasses installed in endoscopes, cameras, and sensors.