OPTICAL CAVITY FOR GAS SENSOR AND GAS SENSOR HAVING OPTICAL CAVITY

    公开(公告)号:US20190195778A1

    公开(公告)日:2019-06-27

    申请号:US16229097

    申请日:2018-12-21

    Abstract: Provided are an optical cavity 100 for a gas sensor which has a space therein and a gas sensor using the optical cavity, in which in the space of the optical cavity 100, an elliptical reflective surface 133, which constitutes a part of an ellipse (133, 133a) and reflects the light emitted from a position of one focal point F1 of the ellipse to concentrate the light on the other focal point F2 of the ellipse, is formed, a hyperbolic reflective surface, which constitutes a part of a hyperbola (135a, 135b) having one focal point that coincides with the other focal point of the ellipse, and reflects the light, which is reflected by the elliptical reflective surface and concentrated on the other focal point of the ellipse, to concentrate the light on the other focal point f2 of the hyperbola, is formed, and a hyperbola centerline B-B′, which connects one focal point of the hyperbola and the other focal point of the hyperbola, is inclined toward a side opposite to the elliptical reflective surface by a predetermined angle with respect to an ellipse centerline A-A′ which connects one focal point of the ellipse and the other focal point of the ellipse.

    FLOW CELL AND OPTICAL SYSTEM FOR ANALYZING FLUID

    公开(公告)号:US20180364152A1

    公开(公告)日:2018-12-20

    申请号:US16001966

    申请日:2018-06-07

    Inventor: Yoram Naor

    Abstract: A flow cell analyzes a fluid sample. A flow cell body contains a reference material and includes at least one hollow chamber to contain the fluid sample. Opposing surfaces of the flow cell body each have at least one transparent portion thereof. An optical path for light traversing through the flow cell body is defined in part by the transparent portions. A switching mechanism adjusts the amount of the reference material in the optical path to effect switching of the flow cell between a reference measurement state and a fluid sample measurement state. The reference measurement state corresponds to a first light intensity measurement and the fluid sample measurement state corresponds to a second light intensity measurement.

    AUTO-FOCUS SYSTEM
    18.
    发明申请
    AUTO-FOCUS SYSTEM 审中-公开

    公开(公告)号:US20180252643A1

    公开(公告)日:2018-09-06

    申请号:US15912919

    申请日:2018-03-06

    Applicant: RENISHAW PLC

    Abstract: An auto-focus system suitable for a spectroscopy system uses the same illumination beam as the exciting light for spectroscopy. This is focused to a spot or line focus on the sample. An image of the spot or line focus is directed to a detector via one or more pupils located eccentrically of the optical axis, so that the focus condition is indicated by displacement of the image on the detector. The spot or line focus on the sample provides contrast in the image to enable auto-focusing without the need to observe contrast over an area of the sample. A method of scanning the surface of a sample is also described, in which a topographical map of the sample is built in a pre-scan with an objective lens having a long working distance. This enables selection of an objective with a shorter working distance for a subsequent scan.

    Device for measuring solution concentration

    公开(公告)号:US10025077B2

    公开(公告)日:2018-07-17

    申请号:US15334462

    申请日:2016-10-26

    Abstract: A device for measuring solution concentration includes housing, a catadioptric structure, an electromagnetic radiation emitter and an electromagnetic radiation detector. The housing is formed with a detecting part for receiving a solution to be detected. The catadioptric structure is received in the housing, and includes a ray entrance portion, a first total internal reflection part, a second total internal reflection part and a ray exit portion. An accommodation part corresponds to the detecting part. The emitter is disposed at one side of the ray entrance portion, and a ray sequentially passes the ray entrance portion, the detecting part, the solution to be detected, and the first total internal reflection part. Then, the ray is totally internally reflected and converged to the second total internal reflection part, and is reflected again. Finally, the ray passes the ray exit portion and is received by the detector.

Patent Agency Ranking