Observation of the coating layer of eyeglass lenses using a microtome.

Section preparation using a microtome! Introducing examples of observing lens coating layers and multilayer films.

Lenses for glasses, cameras, and other devices are coated with various layers. In the case of glasses, multiple coating layers are applied, including a hard coat to protect plastic lenses, an anti-reflective coat to reduce light reflection, and a UV coat to block ultraviolet rays. These layers are applied as extremely thin films, so we observed their structure in cross-section. When observed with a scanning electron microscope (SEM), it was noted that a hard coat/multilayer film is applied on top of the lens substrate, and in the multilayer film, SiO and Nb films are alternately stacked. [Overview] ■ Cross-section preparation method - Prepared with a microtome - The lens removed from the frame was cut into small pieces and embedded in resin - Subsequently, a cross-section was prepared using a microtome, followed by optical microscopy observation, SEM observation, and EDX analysis. *For more details, please refer to the PDF document or feel free to contact us.

basic information

【Other Overview】 ■SEM Observation and EDX Analysis - Observation with SEM revealed that a hard coat/multilayer film is applied on the lens substrate. - In the multilayer film, it can be seen that SiO and Nb films are alternately stacked. - For clearer observation and analysis, TEM is recommended. *For more details, please refer to the PDF document or feel free to contact us.