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    • 6. 发明专利
    • Even and parallel light curtain through single light source
    • 通过单光源即时和平行的光幕
    • JP2008203244A
    • 2008-09-04
    • JP2007330558
    • 2007-12-21
    • Alcon Incアルコン,インコーポレイティド
    • GAO SHAWN XWILLIAMS DAVID LLOYDROWE T SCOTTAGAHI DARYUSH
    • G01F23/28A61F9/007
    • A61M1/0023A61F9/00736A61M2205/3306A61M2205/3389G01F23/2921
    • PROBLEM TO BE SOLVED: To provide even and parallel light curtain to solve the problem wherein a linear light source of high-resolution optical liquid level for continuous monitoring of a system generally uses high-diffusion LED array, in order to achieve even light intensity, as a result, it will have a very large visual angle that the rays, i.e., light beams no longer become parallel. SOLUTION: The point source is located on focal point of parabolic reflector to illuminate the parabolic reflector. The parabolic reflector reflects light from the point source to generate parallel light curtain. This parallel light curtain becomes parallel to the symmetric axis of the parabolic reflector, to illuminate ophthalmic surgery chamber for storing fluid. Sensor array, combined with the chamber, detects the parallel light curtain for illuminating the chamber and supplies an output to a sensing, processing, control system in order to determine the liquid level of the chamber. This optical method for determining the liquid level of surgical fluid has the advantage of preventing surgical fluid from physical contamination. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供均匀和平行的光幕来解决用于连续监视系统的高分辨率光学液位的线性光源通常使用高扩散LED阵列的问题,以便实现均匀 因此,光强度将会有非常大的视角,即光束即光束不再平行。 解决方案:点源位于抛物面反射器的焦点上,以照射抛物面反射器。 抛物面反射器反射来自点源的光以产生平行光幕。 该平行光幕变得平行于抛物面反射器的对称轴,以照射眼科手术室以存储流体。 传感器阵列与腔室结合,检测平行光幕以照射腔室,并将输出提供给感测,处理,控制系统,以确定腔室的液位。 这种用于确定手术液体的液位的光学方法具有防止手术液体物理污染的优点。 版权所有(C)2008,JPO&INPIT
    • 9. 发明专利
    • AT465706T
    • 2010-05-15
    • AT07123297
    • 2007-12-14
    • ALCON INC
    • GAO SHAWN XWILLIAMS DAVID LLOYDROWE T SCOTTAGAHI DARYUSH
    • A61F9/00A61F9/007G01F23/292G01N35/10
    • A continuous high resolution fluid level monitoring system (300) is provided by embodiments of the present invention. This continuous high resolution fluid level monitoring system includes a unique fluid level sensor having a point light source (202), parabolic reflector (204), sensor array (308), and detection, processing and control system (310). The point light source illumines a parabolic reflector wherein the point light source is located at the focus of the parabolic reflector. The parabolic reflector reflects light from the point light source to produce a parallel light curtain (210). This parallel light curtain is parallel to an axis of symmetry of the parabolic reflector. The parallel light curtain illumines a chamber (302) such as a chamber in an ophthalmic surgical device used to contain surgical fluid (304). The sensor array coupled to the chamber detects the parallel light curtain illuminating the chamber. The sensor array provides an output to a detection/processing/control system in order to determine the fluid level within the chamber. This optical method of determining the surgical fluid levels may be advantageous in that it prevents physical contamination of the surgical fluids.
    • 10. 发明申请
    • COLOR COMPENSATING RETINAL SAFETY FILTER
    • 颜色补充反应物安全过滤器
    • WO2006047768A3
    • 2006-06-22
    • PCT/US2005039199
    • 2005-10-26
    • ALCON INCARTSYUKHOVICH ALEXANDER NROWE T SCOTT
    • ARTSYUKHOVICH ALEXANDER NROWE T SCOTT
    • A61B3/00A61F9/00
    • G02B5/28G01J1/0433G01J1/0488G01J2001/0285G02B6/29361
    • A filter and method for filtering an optical beam are disclosed. One embodiment of the filter is an optical filter for filtering an incident light beam, comprising an optically effective material characterized by: a light transmittance of less than 1% for wavelengths below 420 nm; and a light transmittance for wavelengths complimentary to wavelengths below 420 nm that, combined with the transmittance for wavelengths below 420 nm, will yield a filtered light beam having a luminosity of about 90% and an excitation purity of 5% or less. The complimentary wavelengths can be wavelengths above about 640 nm, wavelengths above about 660 nm, and/or wavelengths from about 540 nm to about 560 nm. Further, in one embodiment the difference between the light transmittance just below 420 nm and the light transmittance just above 420 nm can be greater than 90%. Above 420 nm, in some embodiments, the light transmittance can be arbitrarily determined. The optically effective material can be optical-grade glass, an optical-grade plastic or polymer, a thin-film dielectric coating, or an optical-grade glass or plastic coated with a dielectric coating. The optical filter can be mounted downstream of an illumination source exit aperture, wherein the illumination source produces the incident light beam, and upstream of a site to be illuminated by the filtered light beam. Alternatively, the optical filter can be operably mounted on a set of viewing optics of a surgical microscope to filter a reflected portion of a light beam produced by an illumination source and used to illuminate a site, such as a surgical site.
    • 公开了一种用于过滤光束的滤波器和方法。 滤光器的一个实施例是用于对入射光束进行滤光的滤光器,其包括光学有效材料,其特征在于:对于低于420nm的波长的透光率小于1%; 对于波长低于420nm的波长的光透射率,与波长在420nm以下的透射率相结合,将产生发光度为约90%,激发纯度为5%以下的滤光光束。 互补波长可以是高于约640nm的波长,高于约660nm的波长和/或约540nm至约560nm的波长。 此外,在一个实施例中,刚好低于420nm的光透射率与刚好高于420nm的透光率之间的差可以大于90%。 在420nm以上,在一些实施例中,可以任意确定透光率。 光学有效材料可以是光学级玻璃,光学级塑料或聚合物,薄膜电介质涂层或涂覆有介电涂层的光学级玻璃或塑料。 光学滤光器可以安装在照明源出射孔的下游,其中照明源产生入射光束,并且被被滤光光束照射的位置的上游。 或者,光学滤光器可以可操作地安装在手术显微镜的一组观察光学器件上,以过滤由照明源产生的光束的反射部分并且用于照亮诸如手术部位的部位。