SPECTACLE LENS AND METHOD FOR PRODUCING SAME

• Main Author: NISHIMOTO KEIJI
• Format: Patent
• Language: English; Korean
• Published: 15.06.2016
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CONTACT LENSES; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

본 발명의 일 양태는, 물체측 표면 및 안구측 표면의 적어도 일방의 표면이, 장용시에 피팅 포인트 또는 광학 중심보다 하방에 위치하는 하방 영역에 있어서, (1) 400 ∼ 500 ㎚ 의 파장역에 있어서의 직입사 평균 반사율이 1.0 ∼ 15 ％ 의 범위인 것 ； 및 (2) 상기 직입사 평균 반사율이, 장용시에 상기 하방 영역보다 상방에 위치하는 상방 영역의 400 ∼ 500 ㎚ 의 파장역에 있어서의 직입사 평균 반사율을 초과하는 것을 만족시키는 반사 특성을 갖는 안경 렌즈에 관한 것이다. An aspect of the present invention relates to a spectacle lens where at least one of an object-side surface and an eyeball-side surface has, in a lower region positioned downward from a fitting point or an optical center during use, reflection characteristics satisfying that: (1) a normal incidence average reflectance in a wavelength region of 400 to 500 nm is within a range of 1.0 to 15%; and (2) the normal incidence average reflectance is greater than a normal incidence average reflectance in the wavelength region of 400 to 500 nm in an upper region positioned upward from the lower region during use.