Patent ID: 7189014
Filing Date: 2007-03-13
Classification: G03B

Abstract:
1. A process for producing a light amount-adjusting member comprising the steps of: providing a transparent base material and a coloring liquid; and applying the coloring liquid to the base material by ejecting the coloring liquid to the base material to form a colored portion having a specified optical density, wherein the coloring liquid contains at least one coloring material of which maximum absorption wavelength is in a range of from 630 to 750 nm when a solution of the coloring material applied onto the transparent base material is measured, wherein the light amount-adjusting member is a neutral density filter in a visible light range, wherein the at least one coloring material is selected from the group consisting of a compound having a phthalocyanine skeleton represented by general formula (1) and a compound having a cyanine skeleton represented by general formula (2): wherein Y is O or S, R wherein R