Manufacture of optical elements by replication and corresponding replication tools and optical devices

    公开(公告)号:US10379262B2

    公开(公告)日:2019-08-13

    申请号:US15310842

    申请日:2015-05-14

    Abstract: A replication tool for producing an optical structure comprising an optical element includes a central section having the shape defining a negative of a portion of the optical structure and a vertically aligned central axis; a surrounding section laterally surrounding the central section; and one or more contact standoffs defining a plane referred to as contact plane. In a first azimuthal range, the surrounding portion provides a first compensation surface facing away from the central axis, and in a second azimuthal range, the surrounding portion provides a second compensation surface facing away from the central axis. In any cross-section containing the central axis in the second azimuthal range, a steepness of the second compensation surface is higher than a steepness of the first compensation surface in any cross-section containing the central axis in the first azimuthal range.

    Manufacture of truncated lenses, of pairs of truncated lenses and of corresponding devices

    公开(公告)号:US10377094B2

    公开(公告)日:2019-08-13

    申请号:US14426472

    申请日:2013-09-03

    Abstract: The invention relates to wafer-level manufacturing of optical devices such as modules comprising micro-lenses. In one aspect, passive optical components such as truncated lenses are manufactured by providing a substrate on which a multitude of precursor optical structures is present; and removing material from each of said multitude of precursor optical structures. Another aspect comprises a method for manufacturing a device comprising a set of at least two passive optical components, said method comprising the steps of using a tool obtained by carrying out the steps of manufacturing a precursor tool having a replication surface; and modifying said replication surface by removing material from said precursor tool. An yet another aspect comprises a method for manufacturing a device comprising a set of at least two passive optical components, wherein the method comprises the step of using a master comprising a replication surface comprising, for each of said passive optical components, a first portion describing a shape corresponding to the shape of at least a portion of the respective passive optical component, wherein the master comprises, in addition, at least one protruding portion protruding from at least one of said first portions of said replication surfaces.

    Optical pattern projection
    46.
    发明授权

    公开(公告)号:US10359637B2

    公开(公告)日:2019-07-23

    申请号:US15528239

    申请日:2015-11-11

    Inventor: Markus Rossi

    Abstract: This disclosure describes optical systems for projecting an irregular or complex pattern onto a region of space (e.g., a two-dimensional or three-dimensional object or scene). A respective light beam is emitted from each of a plurality of light sources. The emitted light beams collectively are diffracted in accordance with a plurality of different first grating parameters to produce a plurality of first diffracted light beams. The first diffracted light beams then collectively are diffracted in accordance with one or more second grating parameters.

    Optical encoder system
    47.
    发明授权

    公开(公告)号:US10317254B2

    公开(公告)日:2019-06-11

    申请号:US15127660

    申请日:2015-03-18

    Abstract: Optical encoding systems include a generalized cylindrical code scale having one or more regions with different light reflective properties. In an example process, a code scale can be created by coating an elongated generalized cylinder with one or more different layers of materials having different light reflective properties. Portions of these layers can be removed selectively in order to expose a particular overlying material and create a particular pattern of features having different optical characteristics (e.g., absorbing, specularly reflecting, diffusely reflecting).

    Optoelectronic systems and method for operating the same

    公开(公告)号:US10298570B2

    公开(公告)日:2019-05-21

    申请号:US15447341

    申请日:2017-03-02

    Abstract: Optoelectronic systems include an array of optoelectronic modules and a computational unit. The array of optoelectronic modules and the computational unit are operable to collect data of a user of the optoelectronic system. The data can be used, for example, to authenticate the identity of the user by being used in multiple user authentication protocols. In some instances, facial recognition data can be augmented with three-dimensional data of the user and can be combined with iris recognition data to authenticate the identity of the user. Such optoelectronic systems can comprise hardware authentication systems external to auxiliary devices such as tablet computers and laptop computers.

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