会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明授权
    • Best focus determining method
    • 最佳焦点确定方法
    • US5750294A
    • 1998-05-12
    • US685464
    • 1996-07-24
    • Masanobu HasegawaMinoru YoshiiSeiji Takeuchi
    • Masanobu HasegawaMinoru YoshiiSeiji Takeuchi
    • G03B27/72G03F7/20G03F7/207G03F7/22G03F9/00G03F9/02H01L21/027
    • G03F7/70558G03F7/70241G03F7/70591G03F7/70641
    • Disclosed is a method of determining a best focus position or best exposure amount of a projection lens in an arrangement wherein a reticle is placed on a plane perpendicular to an optical axis of the projection lens, wherein a pattern having periodicity in a predetermined direction is provided on a surface of the reticle, wherein the pattern is transferred to a photosensitive substrate by the projection lens to form a printed pattern thereon. The method includes providing the pattern by using a plurality of zigzag openings of a constant line width, extending in a direction perpendicular to the predetermined direction and being arrayed with a constant periodicity along that direction, transferring the pattern to the photosensitive substrate sequentially with different focus positions to form plural printed patterns thereon, imaging the printed patterns upon an image pickup surface of photoelectrically converting means; calculating, from an imagewise signal produced by the photoelectrically converting means, information related to one frequency component of zigzag lines, constituting an outline of an image of the zigzag opening, and determining the best focus position on the basis of the information.
    • 公开了一种确定投影透镜的最佳聚焦位置或最佳曝光量的方法,其中将掩模版放置在垂直于投影透镜的光轴的平面上,其中提供了沿预定方向具有周期性的图案 在掩模版的表面上,其中通过投影透镜将图案转印到感光基板上,以在其上形成印刷图案。 该方法包括通过使用在垂直于预定方向的方向上延伸的恒定线宽度的多个之字形开口来提供图案,并沿着该方向以恒定的周期排列,以不同的焦点依次传送图案到感光基片 在其上形成多个印刷图案的位置,将印刷图案成像在光电转换装置的图像拾取表面上; 根据由光电转换装置产生的成像信号,计算与Z字形线的一个频率分量有关的信息,构成Z字形开口的图像的轮廓,并根据该信息确定最佳对焦位置。
    • 10. 发明授权
    • Measuring apparatus utilizing diffraction of reflected and transmitted
light
    • 利用衍射反射和透射光的测量装置
    • US5541729A
    • 1996-07-30
    • US47655
    • 1993-04-19
    • Seiji TakeuchiMinoru YoshiiHiroyasu Nose
    • Seiji TakeuchiMinoru YoshiiHiroyasu Nose
    • G01B9/02G01B11/00G01D5/38G02B27/28G03F9/00
    • G01B9/02007G01B9/02003G01B9/02027G01D5/38G03F9/7049G01B2290/15G01B2290/30G01B2290/45G01B2290/70
    • In measuring apparatus for detecting relative displacement of a diffraction grating, a light beam is separated in an optical unit such as polarizing beam splitter into a reflected light beam and a transmitted light beam which beams are projected onto the diffraction grating. The diffracted light of the reflected and transmitted light beams are deflected by a deflection unit to be projected again onto the diffraction grating for rediffraction. The rediffracted light of the reflected and transmitted light beams are combined in the polarizing beam splitter and a detector detects the interference state of the combined rediffracted light. The deflection unit deflects the diffracted light beams of the reflected light and transmitted light so that they reenter the diffraction grating after traveling along the same optical path in the directions opposite to each other. The apparatus provides a simple configuration that prevents reduction of light intensity and provides the same optical path for both reference and displacement measuring light beams so that errors caused by fluctuation in air and heterogeneity in optical components are cancelled.
    • 在用于检测衍射光栅的相对位移的测量装置中,光束在诸如偏振分束器的光学单元中被分离为反射光束和透射光束,该光束被投射到衍射光栅上。 反射和透射光束的衍射光被偏转单元偏转,以再次投影到衍射光栅上以进行红移。 反射和透射光束的再衍射光组合在偏振分束器中,检测器检测组合的红光的干涉状态。 偏转单元使反射光的衍射光和透射光偏转,使得它们沿相同的光路在彼此相反的方向上行进之后重新进入衍射光栅。 该装置提供了防止光强降低的简单结构,并为参考和位移测量光束提供相同的光路,从而消除由空气波动和光学部件中的异质性引起的误差。