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    • 4. 发明授权
    • Method for preparing variable-light transmittance article
    • 制备可变透光制品的方法
    • US5021196A
    • 1991-06-04
    • US554321
    • 1990-07-16
    • John C. CranoPatricia L. KwiatkowskiRodney J. Hurditch
    • John C. CranoPatricia L. KwiatkowskiRodney J. Hurditch
    • C08K5/00G02B1/04
    • G02B1/041C08K5/0041
    • Variable-transmittance articles, such as an ophthalmic lens, are prepared by applying to or incorporating within the article a combination of two (or more) organic photochromic substances exhibiting different activated absorption maxima within the matrix in which the substances are incorporated. One organic photochromic substance has an absorption maximum within the range of between greater than 590 and about 700 nanometers. The other organic photochromic substance exhibits at least one absorption maximum and preferably two absorption maxima, within the range of between about 400 and less than 590 nanometers. The organic photochromic substances are used in a proportion to achieve a near neutral coloring of the article. The article may also be tinted with a light compatible tint (dye) to achieve a more neutral color when the photochromic substances are activated.
    • 可变透射物品,例如眼科镜片,是通过在物品内掺入物质的基质内施用或并入物品中的两种(或更多种)表现出不同的活化吸收最大值的有机光致变色物质的组合来制备的。 一种有机光致变色物质的吸收最大值在大于590和约700纳米之间的范围内。 另一种有机光致变色物质在约400至小于590纳米的范围内表现出至少一个吸收最大值,优选两个最大吸收。 有机光致变色物质以一定比例使用以实现制品的近中性着色。 当光致变色物质被激活时,该物品也可以着色有浅色相容的色调(染料)以获得更中性的颜色。
    • 5. 发明授权
    • Variable-light transmittance article and method for preparing same
    • 可变透光制品及其制备方法
    • US4968454A
    • 1990-11-06
    • US147430
    • 1988-01-25
    • John C. CranoPatricia L. KwiatkowskiRodney J. Hurditch
    • John C. CranoPatricia L. KwiatkowskiRodney J. Hurditch
    • G02B5/23C08K5/00C08K5/357C09K9/02G02B1/04
    • C08K5/0041G02B1/041
    • Variable-transmittance articles, such as an ophthalmic lens, are prepared by applying to or incorporating within the article a combination of two (or more) organic photochromic substances exhibiting different activated absorption maxima within the matrix in which the substances are incorporated. One organic photochromic substance has an absorption maximum within the range of between greater than 590 and about 700 nanometers. The other organic photochromic substance exhibits at least one absorption maximum and preferably two absorption maxima, within the range of between about 400 and less than 500 nanometers. The organic photochromic substances are used in a proportion to achieve a near neutral coloring of the article. The article may also be tinted with a light compatible tint (dye) to achieve a more neutral color when the photochromic substances are activated.
    • 可变透射物品,例如眼科镜片,是通过在物品内掺入物质的基质内施用或并入物品中的两种(或更多种)表现出不同的活化吸收最大值的有机光致变色物质的组合来制备的。 一种有机光致变色物质的吸收最大值在大于590和约700纳米之间的范围内。 另一种有机光致变色物质在约400至小于500纳米的范围内表现出至少一个吸收最大值,优选两个最大吸收。 有机光致变色物质以一定比例使用以实现制品的近中性着色。 当光致变色物质被激活时,该物品也可以着色有浅色相容的色调(染料)以获得更中性的颜色。