MANUFACTURING METHOD OF OPTICAL ELEMENT, OPTICAL ELEMENT AND PHOTOSENSITIVE COMPOSITION

• Main Author: SATO AZUMI
• Format: Patent
• Language: English; Japanese
• Published: 07.09.2023
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; ELECTROGRAPHY; HOLOGRAPHY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MATERIALS THEREFOR; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; ORIGINALS THEREFOR; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide a manufacturing method of optical element capable of inhibiting leak light of an optical element including a lens and a light blocking layer located on a lens peripheral edge and at least covering part of a curved surface of the lens, and a photosensitive composition usable for a manufacturing method of the optical element.SOLUTION: There is provided a manufacturing method of an optical element which includes a lens and a light blocking layer located on a lens peripheral edge and at least covering part of a curved surface of the lens. The method includes: applying a photosensitive composition on the curved surface of the lens to form a coating film; positionally and selectively exposing a site on the coating film where the light blocking layer is formed; developing the exposed coating film; and heating and curing the developed coating film. Examples used as the photosensitive composition include: a photosensitive composition containing alkali-soluble resin, photopolymerizable monomer, photoinitiator, light blocking agent and organic solvent, having specific thixotropy index and viscosity; or a photosensitive composition containing alkali-soluble resin, photo polymerizable monomer, photoinitiator, light blocking agent, thickener and organic solvent.SELECTED DRAWING: None 【課題】レンズとレンズ周縁に位置し少なくともレンズの曲面の一部を覆う遮光層とを備える光学素子の光漏れを抑制することができる光学素子の製造方法と、当該光学素子の製造方法に使用し得る感光性組成物とを提供する。【解決手段】レンズとレンズ周縁に位置し少なくともレンズの曲面の一部を覆う遮光層とを備える光学素子の製造方法であって、感光性組成物をレンズの曲面に塗布して塗布膜を形成し、塗布膜における遮光層が形成される位置を位置選択的に露光し、露光後の塗布膜を現像し、現像後の塗布膜を加熱して硬化させる製造方法において、感光性組成物として、アルカリ可溶性樹脂と光重合性モノマーと光重合開始剤と遮光剤と有機溶剤とを含み特定のチキソトロピーインデックス及び粘度を有する感光性組成物、又はアルカリ可溶性樹脂と光重合性モノマーと光重合開始剤と遮光剤と増粘剤と有機溶剤とを含む感光性組成物を用いる。【選択図】なし