Optical mask for all-optical extended depth-of-field for imaging systems under incoherent illumination
    1.
    发明授权
    Optical mask for all-optical extended depth-of-field for imaging systems under incoherent illumination 有权
    用于非相干照明下成像系统的全光学扩展景深的光学掩模

    公开(公告)号:US08570655B2

    公开(公告)日:2013-10-29

    申请号:US13027286

    申请日:2011-02-15

    IPC分类号: G02B27/46

    摘要: A method of optical element manufacturing, the method may include selecting a range of a misfocus parameter ψ; and designing the optical element to include multiple regions, wherein the optical transfer function (OTF) of the optical element allows, for the range of the misfocus parameter .psi., transmission of images with a contrast of at least 10% for all normalized spatial frequencies up to 50% of a theoretical maximum that is attainable with a full aperture in an in-focus condition.

    摘要翻译: 一种光学元件制造方法,该方法可以包括选择误聚焦参数psi的范围; 以及将所述光学元件设计为包括多个区域,其中所述光学元件的光学传递函数(OTF)允许在所述误聚焦参数的范围内。对于所有归一化空间,具有至少10%的对比度的图像的传输 频率高达理论最大值的50%,可以在对焦条件下使用全孔径来获得。

    OPTICAL MASK FOR ALL-OPTICAL EXTENDED DEPTH-OF-FIELD FOR IMAGING SYSTEMS UNDER INCOHERENT ILLUMINATION
    2.
    发明申请
    OPTICAL MASK FOR ALL-OPTICAL EXTENDED DEPTH-OF-FIELD FOR IMAGING SYSTEMS UNDER INCOHERENT ILLUMINATION 有权
    用于无光照射下成像系统全光学扩展深度的光学掩模

    公开(公告)号:US20110197428A1

    公开(公告)日:2011-08-18

    申请号:US13027286

    申请日:2011-02-15

    IPC分类号: B23P11/00

    摘要: A method of optical element manufacturing, the method may include selecting a range of a misfocus parameter ψ; and designing the optical element to comprise multiple regions, wherein the optical transfer function (OTF) of the optical element allows, for the range of the misfocus parameter ψ, transmission of images with a contrast of at least 10% for all normalized spatial frequencies up to 50% of a theoretical maximum that is attainable with a full aperture in an in-focus condition.

    摘要翻译: 一种光学元件制造方法,该方法可以包括选择误聚焦参数ψ的范围; 并且将光学元件设计成包括多个区域,其中光学元件的光学传递函数(OTF)允许在误聚焦参数ψ的范围内,对于所有归一化的空间频率上升至少10%的对比度的图像的传输 到理论最大值的50%,其可以在对焦条件下用全孔径来获得。

    Optical mask for all-optical extended depth-of-field for imaging systems under incoherent illumination
    3.
    发明申请
    Optical mask for all-optical extended depth-of-field for imaging systems under incoherent illumination 审中-公开
    用于非相干照明下成像系统的全光学扩展景深的光学掩模

    公开(公告)号:US20060204861A1

    公开(公告)日:2006-09-14

    申请号:US11078294

    申请日:2005-03-14

    摘要: A mask for enhancing the depth of focus of an optical imaging system is designed by optimizing an optical property (transmittance or reflectance) of the mask relative to the intensity distribution in the system's image plane. Preferably, a desired PSF intensity is selected, a desired misfocus parameter range is selected, and the optical property is adjusted to minimize a measure of the departure of the system's PSF intensity, as computed from the mask's optical property, from the desired PSF intensity, over the entire misfocus parameter range. Most preferably, the desired PSF intensity is selected as the inverse Fourier transform of a desired OTF. Preferably, the mask is fabricated as a DOE.

    摘要翻译: 通过优化掩模的相对于系统的图像平面中的强度分布的光学性质(透射率或反射率)来设计用于增强光学成像系统的焦深的掩模。 优选地,选择期望的PSF强度,选择期望的误聚焦参数范围,并且调节光学性质以使从系统的光学性质计算出的系统的PSF强度偏离所期望的PSF强度的度量最小化, 在整个误聚焦参数范围内。 最优选地,期望的PSF强度被选择为所需OTF的傅里叶逆变换。 优选地,掩模被制造为DOE。

    Optical imaging system with an extended depth-of-field and method for designing an optical imaging system
    4.
    发明授权
    Optical imaging system with an extended depth-of-field and method for designing an optical imaging system 有权
    具有扩展景深的光学成像系统和用于设计光学成像系统的方法

    公开(公告)号:US08576323B2

    公开(公告)日:2013-11-05

    申请号:US12581191

    申请日:2009-10-19

    IPC分类号: H04N5/225 H04N5/228

    CPC分类号: G02B27/0075

    摘要: A method for designing a mask, the method includes: choosing or receiving a desired contrast value; and determining sizes, locations and shapes of multiple rotationally symmetric regions of a mask such as to define a modulation transfer function that is characterized by a substantially uniform response over a spatial frequency range; wherein the uniform response is substantially indifferent to an orientation of features of the object and to a location of the object within a deep depth-of-field region. An optical imaging system that includes: a mask that includes multiple rotationally regions; wherein the multiple rotationally symmetric regions are shaped and positioned such as to define a modulation transfer function that is characterized by a substantially uniform response over a spatial frequency range, wherein the uniform response is substantially indifferent to an orientation of features of the object and to a location of the object within a deep depth-of-field region.

    摘要翻译: 一种用于设计掩模的方法,所述方法包括:选择或接收期望的对比度值; 以及确定掩模的多个旋转对称区域的尺寸,位置和形状,以便限定特征在于在空间频率范围上基本均匀的响应的调制传递函数; 其中所述均匀响应对于所述物体的特征的方向和所述物体在深深度景深区域内的位置基本上无关。 一种光学成像系统,包括:掩模,其包括多个旋转区域; 其中所述多个旋转对称区域被成形和定位,以便限定调制传递函数,所述调制传递函数的特征在于空间频率范围上的基本均匀的响应,其中所述均匀响应基本上与所述对象的特征的取向无关, 物体在深深的景深区域内的位置。

    Super-resolving imaging system
    6.
    发明授权
    Super-resolving imaging system 有权
    超分辨成像系统

    公开(公告)号:US06344893B1

    公开(公告)日:2002-02-05

    申请号:US09596445

    申请日:2000-06-19

    IPC分类号: G01C300

    摘要: A super-resolving imaging apparatus employs diffractive optical elements placed on the imaging lens. This element, and the use of a modified Scheimpflug arrangement allow the conversion of degrees of freedom in one axis of a field of view to a larger degree of freedom in another axis in order to obtain a high resolution image with a wide depth of focus and large field of view. Replicas created by the diffractive elements are mutually shifted by subpixel amounts, and are combined using a Gabor transform, which is facilitated by a spatial mask placed over the detector array. The apparatus is suitable for performing distance estimation on an object within the field of view.

    摘要翻译: 超分辨成像装置使用放置在成像透镜上的衍射光学元件。 该元件以及改进的Scheimpflug装置的使用允许将视场的一个轴上的自由度转换到另一个轴上的较大自由度,以便获得具有宽的焦深​​的高分辨率图像,并且 大视野。 由衍射元件产生的复制品相互偏移了子像素量,并且使用Gabor变换进行组合,Gabor变换由放置在检测器阵列上的空间掩模所促进。 该装置适于对视场内的对象执行距离估计。

    Zero-order computer generated phase-only holograms
    8.
    发明授权
    Zero-order computer generated phase-only holograms 失效
    零阶计算机产生相位全息图

    公开(公告)号:US6166833A

    公开(公告)日:2000-12-26

    申请号:US536601

    申请日:2000-03-28

    摘要: A method for encoding zero-order phase-only holograms, and the holograms so encoded. The amplitude and phase of each point of a discrete mathematical transform, such as a Fourier transform, of an image to be encoded, are encoded as regions of a corresponding pixel of a transparent filter, with suitably selected fractional areas and optical path lengths. The various optical path lengths may be created by manipulating the filter's index of refraction, or by manipulating the thickness of the filter, preferably by etching. Various encoding schemes are presented, appropriate to etching systems with low lateral resolution, to etching systems with high lateral resolution but depth resolution limited to a discrete number of depths, and to etching systems with limited resolution both laterally and in depth.

    摘要翻译: 一种用于编码零阶相位全息图和如此编码的全息图的方法。 要编码的图像的离散数学变换(例如傅立叶变换)的每个点的幅度和相位被编码为具有适当选择的分数区域和光路长度的透明滤波器的相应像素的区域。 各种光程长度可以通过操纵滤光片的折射率,或者优选通过蚀刻来操纵滤光片的厚度来产生。 呈现适合于具有低横向分辨率的蚀刻系统的各种编码方案,具有高横向分辨率但深度分辨率限制在离散数量的深度的蚀刻系统,以及横向和深度方面的分辨率有限的蚀刻系统。

    DEVICES AND METHODS OF READING MONOCHROMATIC PATTERNS
    9.
    发明申请
    DEVICES AND METHODS OF READING MONOCHROMATIC PATTERNS 有权
    读取单色图案的装置和方法

    公开(公告)号:US20110222763A1

    公开(公告)日:2011-09-15

    申请号:US13044579

    申请日:2011-03-10

    IPC分类号: G06K7/12 G06K9/18 G06K7/10

    摘要: A method of extracting data from an identifiable monochromatic pattern. The method comprises separating a polychromatic optical signal, received from an object having identifiable monochromatic pattern, into a plurality of wavelength components, separately capturing each of the wavelength components, reconstructing a plurality of images each from a different wavelength component, detecting the identifiable monochromatic pattern in one or more of the images, and extracting data associated with or encoded by the detected identifiable monochromatic pattern. The images have different depths of field.

    摘要翻译: 从可识别单色图案提取数据的方法。 该方法包括将从具有可识别单色图案的物体接收的多色光信号分离成多个波长分量,分别捕获每个波长分量,从不同波长分量重建多个图像,检测可识别的单色图案 在一个或多个图像中,并且提取与检测到的可识别单色图案相关联或编码的数据。 图像具有不同的景深。

    Beam with extended confinement for scanning purposes
    10.
    发明授权
    Beam with extended confinement for scanning purposes 失效
    用于扫描目的的延长约束的光束

    公开(公告)号:US5315095A

    公开(公告)日:1994-05-24

    申请号:US19384

    申请日:1993-02-18

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10792 G06K2207/1013

    摘要: Scanner optics, usable for example in a bar code reader, generate a multitude of Gaussian beams derived from a common light source to produce a beam with extended working range. In the preferred embodiment, a 360 degree fan of Gaussian beams is generated by passing a laser beam through at least one diffractive element, e.g., computer generated holographic (CGH) plate, computed to perform the transformation of the illuminating beam into the desired output beam. The beam thus produced, having a small diameter over a large longitudinal distance, is useful for long range scanning.

    摘要翻译: 可用于例如条形码读取器的扫描器光学器件可以从普通光源产生多个高斯光束,以产生具有延长工作范围的光束。 在优选实施例中,通过使激光束通过至少一个衍射元件(例如,计算机生成的全息图(CGH))来产生高斯光束的360度风扇,以计算以执行将照明光束转换成期望的输出光束 。 如此制造的光束在大的纵向距离上具有小直径,对于远距离扫描是有用的。