Beam homogenizer
    51.
    发明授权
    Beam homogenizer 有权
    梁匀浆机

    公开(公告)号:US06278550B1

    公开(公告)日:2001-08-21

    申请号:US09484050

    申请日:2000-01-18

    Abstract: A beam homogenizer that minimizes undesired intensity variations at the output plane caused by sharp breaks between facets in previous embodiments. The homogenizer includes a hologram made up of irregularly patterned diffractive fringes. An input beam illuminates at least part of the hologram. The hologram transmits a portion of the input beam onto an output plane. In doing so, the energy of the input beam is spatially redistributed at the output plane into a homogenized output beam having a preselected spatial energy distribution at the output plane. Thus, the illuminated portion of the output plane has a shape predetermined by the designer of the homogenizer.

    Abstract translation: 一种光束均化器,其最小化在先前实施例中由小面之间的尖锐断裂引起的在输出平面处的不期望的强度变化。 均化器包括由不规则图案化的衍射条纹构成的全息图。 输入光束照亮全息图的至少一部分。 全息图将输入光束的一部分传输到输出平面上。 在这样做时,输入光束的能量在输出平面处被空间重新分布成具有在输出平面处的预选的空间能量分布的均质输出光束。 因此,输出平面的照明部分具有由均化器的设计者预定的形状。

    Projection pointer
    53.
    发明授权

    公开(公告)号:US5718496A

    公开(公告)日:1998-02-17

    申请号:US668976

    申请日:1996-06-25

    CPC classification number: G02B27/20 G02B27/58 G02B5/1842 G02B5/1871 G02B5/32

    Abstract: An improved optical system is disclosed for projecting light in the form of an image to a remote target. The laser light source and a holographic optical element are mounted together in optical alignment. The optical element is created using iterative discrete computer encoding for optimum efficiency. In alternate embodiments, the diffractive optical element has a collimating lens encoded into the grating levels and it also performs soft aperture circularizing using either amplitude or phase control over the coherent light. An embossed diffractive optical element laminated to an injection-molded refractive element is also disclosed.

    Spectrally diverse, spatially sensitive apparatus and associated methods
    57.
    发明申请
    Spectrally diverse, spatially sensitive apparatus and associated methods 审中-公开
    光谱多样,空间敏感的装置和相关方法

    公开(公告)号:US20090073451A1

    公开(公告)日:2009-03-19

    申请号:US12292312

    申请日:2008-11-17

    Abstract: A spectrometer for use with a desired wavelength range includes an array of filters. Each filter outputs at least two non-contiguous wavelength peaks within the desired wavelength range. The array of filters is spectrally diverse over the desired wavelength range, and each filter in the array of filters outputs a spectrum of a first resolution. An array of detectors has a detector for receiving an output of a corresponding filter. A processor receives signals from each detector, and outputs a reconstructed spectrum having a second resolution, the second resolution being higher than any of the first resolution of each filter. Filters and detectors may be arranged into a plurality of imaging units, each imaging unit including first and second filters and first and second photosensing regions. A processor receives signals from each imaging unit, and generates a reconstructed spatial image comprised of discrete spatial units corresponding to each imaging unit.

    Abstract translation: 用于所需波长范围的光谱仪包括一组滤光片。 每个滤波器在期望的波长范围内输出至少两个不连续的波长峰值。 滤波器阵列在期望的波长范围内是频谱多样的,并且滤波器阵列中的每个滤波器输​​出第一分辨率的光谱。 检测器阵列具有用于接收相应滤波器的输出的检测器。 处理器从每个检测器接收信号,并输出具有第二分辨率的重建频谱,第二分辨率高于每个滤波器的任何第一分辨率。 滤光器和检测器可以被布置成多个成像单元,每个成像单元包括第一和第二滤光器以及第一和第二光敏区域。 处理器从每个成像单元接收信号,并且产生由对应于每个成像单元的离散空间单元组成的重构空间图像。

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