公开(公告)号：US4256368A

公开(公告)日：1981-03-17

申请号：US110145

申请日：1980-01-07

Applicant: Harry L. Task

Inventor： Harry L. Task

IPC: G03B27/72 ,  G02B27/18 ,  G02B27/28 ,  G03B21/00

CPC classification number: G03B27/72

Abstract: An apparatus for generating patterned images which are variable in color contrast and spatial frequency while retaining a substantially constant, uniform level of photometric luminance. Two broad spectrum beams of luminous energy are individually projected through two orthogonally oriented polarizers and interleaved upon being split. The intensity in one beam is homogeneous while the other contains a spatially periodic pattern. The two beams created by splitting and interleaving are selectively color filtered and combined after one is translated sufficiently to reverse its phase relative to the other. A rotating polarizer in the path of the output combined beam alters the pattern color composition between one extreme where the spatially reversing colors are defined by the color filters and the opposite extreme in which the pattern disappears into a uniform composition of the two colors.

Abstract translation: 一种用于产生可以在色彩对比度和空间频率上变化的图案图像的装置，同时保持基本上恒定的，均匀的光度亮度水平。 两个广谱光束光束通过两个正交取向的偏振器分别投影，并在分裂时交错。 一个光束的强度是均匀的，而另一个光束的强度是空间周期性的。 通过分割和交织产生的两个光束被选择性地滤色，并且在一个被充分转换以相对于另一个反转相位之后被组合。 在输出组合光束的路径中的旋转偏振器改变在一个极端之间的图案颜色组合，其中空间反转颜色由滤色器定义，并且相反的极值在图案消失成两种颜色的均匀组成。

公开(公告)号：US4249823A

公开(公告)日：1981-02-10

申请号：US85453

申请日：1979-10-16

Applicant: Harry L. Task

Inventor： Harry L. Task

IPC: G01B11/26 ,  G01N21/41

CPC classification number: G01B11/26 ,  G01N21/41 ,  G01N2021/9586

Abstract: An apparatus for detecting the angular deviation from an axis imparted to a ray when passing through a transparent medium, for resolving the angular deviation into its components, and for generating electrical signals accurately representing the magnitudes of such components. A laser beam is projected along an optical axis through the medium and focussed by a displacement compensation lens. The beam is divided into channels with a beam splitter, each channel being incident upon a transmission diffraction grating. Each grating, characterized by fine parallel lines of substantially random size and spacing, generates a fan-shaped region of luminous energy. At a distance equal to the focal length of the lens, the fan-shaped regions cross detector arrays aligned parallel to the grating lines. A change in the angular deviation proportionally translates the crossing point along the detector array.

Abstract translation: 一种用于检测当通过透明介质时赋予光线的轴的角度偏差的装置，用于将角度偏差分解成其部件，以及用于产生准确地表示这些部件的大小的电信号。 激光束沿着光轴通过介质投影并由位移补偿透镜聚焦。 光束被分成具有分束器的通道，每个通道入射在透射衍射光栅上。 每个光栅的特征在于具有大致随机尺寸和间隔的细微平行线，产生扇形扇形区域的光能。 在与透镜的焦距相等的距离处，扇形区域交叉检测器阵列平行于光栅线排列。 角度偏差的变化沿着检测器阵列成比例地平移交叉点。