Device and Method for Determining a Focal Point

    公开(公告)号:US20240102855A1

    公开(公告)日:2024-03-28

    申请号:US18257422

    申请日:2021-12-14

    Abstract: The invention relates to a beam analysis device (10) for determining the axial position of the focal point (71) of an energy beam or a sample beam (70) decoupled from an energy beam, comprising a beam-shaping device (12), a detector (40), and an analysis device (45). The beam-shaping device (12) is designed to release two sub-beams (72, 73) from the sample beam (70) on a plane of the sub-beam release process (19). The cross-sections of the two sub-beams (72, 73) are defined by sub-apertures (32, 33) which are delimited from each other and which are arranged at a distance k to each other in a first lateral direction (31). The beam-shaping device (12) is designed to image the two sub-beams (72, 73) in order to form two beam spots (92, 93) on the detector and deflect at least one of the two sub-beams (72, 73) in a second lateral direction (37) which is oriented transversely to the first lateral direction (31) in order to form a distance w in the second lateral direction (37) between the two beam spots (92, 93). The analysis device (45) is designed to determine the distance a along the first lateral direction (31) between positions of the two beam spots (92, 93) on the detector (40) and to determine the axial position of the beam focus (71) on the basis of the distance a and/or to determine a change in the axial position of the beam focus (71) on the basis of a change in the distance a. The invention also relates to a corresponding method for determining the axial position of a beam focus (71).

    Sensor arrangement with a silicon-based optical sensor and a substrate for functional layer systems
    67.
    发明授权
    Sensor arrangement with a silicon-based optical sensor and a substrate for functional layer systems 有权
    传感器布置与硅基光学传感器和功能层系统的基板

    公开(公告)号:US09595554B2

    公开(公告)日:2017-03-14

    申请号:US14272680

    申请日:2014-05-08

    Applicant: MAZeT GmbH

    Abstract: A sensor arrangement with a silicon-based optical sensor, particularly color sensors for colorimetric applications is disclosed. The invention aims to find a novel possibility for suppressing interference ripples occurring in optical sensors when adding substrates with optically functional coatings which permits a simple production without complicated adaptation layers. The sensor passivation is composed of a combination of thin SiO2 layer in the range of 5 to 10 nm and an antireflection-matched Si3N4 layer and a substrate which carries at least one optical filter is arranged over the sensor passivation and connected to the sensor by means of an adhesive and forms an intermediate space between sensor surface and optical filter which is filled with an optical medium having a low refractive index (n2) and a height variation (Δh) over the associated sensor surface.

    Abstract translation: 公开了一种具有硅基光学传感器的传感器装置,特别是用于比色应用的彩色传感器。 本发明旨在找到一种新颖的可能性,用于在添加具有光学功能涂层的基底时抑制在光学传感器中发生的干扰波纹,这允许在没有复杂的适应层的情况下进行简单的生产。 传感器钝化由5至10nm范围内的薄SiO 2层和抗反射匹配Si 3 N 4层的组合以及承载至少一个滤光器的衬底组合在传感器钝化上并通过装置连接到传感器 并且在传感器表面和滤光器之间形成中间空间,该中间空间填充有在相关联的传感器表面上具有低折射率(n2)和高度变化(Δh)的光学介质。

    Method and apparatus for measuring the shape of a wave-front of an optical radiation field
    69.
    发明授权
    Method and apparatus for measuring the shape of a wave-front of an optical radiation field 有权
    用于测量光辐射场的波前形状的方法和装置

    公开(公告)号:US09442006B2

    公开(公告)日:2016-09-13

    申请号:US14751259

    申请日:2015-06-26

    CPC classification number: G01J1/4257 G01J1/0477 G01J9/00 G01J2009/002

    Abstract: Method for measuring shape of wavefront of optical radiation field generated by radiation source, includes: (a) setting diaphragm positions in pinhole diaphragm having diaphragm opening movable transversely to radiation source's optical axis, wherein a partial beam from radiation field passes through diaphragm opening at each diaphragm position and is imaged on optical sensor by imaging optics device; (b) recording lateral positions of partial beam relative to optical axis of imaging optics device, wherein lateral positions each with one of the diaphragm positions of pinhole diaphragm are recorded by optical sensor, and determining the shape of wavefront from recorded lateral positions of partial beam, wherein beam incidence range of the partial beam which is invariable for all diaphragm positions is set on imaging optics device with a pentaprism arrangement including at least first pentaprism and positioned between pinhole diaphragm and imaging optics device. A wavefront shape measuring device is also described.

    Abstract translation: 用于测量由辐射源产生的光辐射场的波前形状的方法,包括:(a)在具有可横向于辐射源的光轴可移动的光阑开口的针孔光阑中设置光阑位置,其中来自辐射场的部分光束通过每个 通过成像光学装置在光学传感器上成像; (b)记录部分光束相对于成像光学装置的光轴的横向位置,其中每个具有针孔光阑的一个光阑位置的横向位置由光学传感器记录,并且从部分光束的记录横向位置确定波前的形状 其中对于所有光阑位置不变的部分光束的光束入射范围被设置在具有至少第一五棱镜并且定位在针孔光阑和成像光学器件之间的五棱镜布置的成像光学器件上。 还描述了一种波前形状测量装置。

    SENSING MODULE AND LASER DEVICE
    70.
    发明申请
    SENSING MODULE AND LASER DEVICE 审中-公开
    传感模块和激光器件

    公开(公告)号:US20150318663A1

    公开(公告)日:2015-11-05

    申请号:US14269132

    申请日:2014-05-03

    Inventor: HSIN-CHIH TUNG

    Abstract: Disclosure is related to a sensing module and a Laser device using the sensing module. The sensing module is adapted to a Laser module. The sensing module essentially includes a beam splitter and a photo sensor. This beam splitter is disposed at an optical-axis path of laser beam. The splitter is used to split the laser beam into a transmissive beam and a reflective beam. The photo sensor however is disposed apart from the optical-axis path of the original laser beam. The photo sensor converts the sensed photo signals into electrical signals which are as feedback signals to the laser module.

    Abstract translation: 公开涉及使用感测模块的感测模块和激光设备。 传感模块适用于激光模块。 感测模块​​基本上包括分束器和光电传感器。 该分束器设置在激光束的光轴路径处。 分离器用于将激光束分成透射光束和反射光束。 然而,光传感器与原始激光束的光轴路径隔开。 光传感器将感测到的光信号转换为作为反馈信号的激光模块的电信号。

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