Optisches Element und Optische Vorrichtung

Details

Veröffentlichungs-Nr.

EP3407098

Aktenzeichen

EP18173885

Anmeldetag

23. Mai 2018

Veröffentlichung

19. Februar 2020

Erteilung

19. Februar 2020

Rechtsraum

EP

IPC

G02B5/00G02B27/00

Abstract

An optical element includes an optically effective surface and an optically non-effective surface, and a light-shielding coating film (2) is formed on the optically non-effective surface. The optically non-effective surface includes a round-chamfered (c) concave step corner section, the light-shielding coating film is formed over the entire concave step corner section, the light-shielding coating film has a raised area (21) near a location where one of planes of the concave step corner section is connected to the round chamfer (c). Consequently, film cracking of the optically non-effective surface of a stepped shape is inhibited and a reliable optical element is provided.

Anmelder

Firma

CANON KABUSHIKI KAISHA

Land

🇯🇵 Japan

Fachgebiete