Adaptive nuisance filter
    304.
    发明授权

    公开(公告)号:US09835566B2

    公开(公告)日:2017-12-05

    申请号:US15058115

    申请日:2016-03-01

    Abstract: Methods and systems for generating inspection results for a specimen with an adaptive nuisance filter are provided. One method includes selecting a portion of events detected during inspection of a specimen having values for at least one feature of the events that are closer to at least one value of at least one parameter of the nuisance filter than the values for at least one feature of another portion of the events. The method also includes acquiring output of an output acquisition subsystem for the sample of events, classifying the events in the sample based on the acquired output, and determining if one or more parameters of the nuisance filter should be modified based on results of the classifying. The nuisance filter or the modified nuisance filter can then be applied to results of the inspection of the specimen to generate final inspection results for the specimen.

    MULTI-SURFACE SPECULAR REFLECTION INSPECTOR
    306.
    发明申请

    公开(公告)号:US20170336331A1

    公开(公告)日:2017-11-23

    申请号:US15159626

    申请日:2016-05-19

    Abstract: An optical inspector includes a time varying beam reflector, a radiating source that irradiates the time varying beam reflector, a telecentric scan lens configured to direct the radiation reflected by the time varying beam reflector onto a first surface of a transparent sample, a first detector that receives at least a portion of top surface specular reflection, a second detector that receives at least a portion of the bottom surface specular reflection. A turning mirror may also be included. The turning mirror is a switchable mirror that can be adjusted to a first position where the turning mirror reflects the top and bottom surface specular reflection, and can be adjusted to a second position where the turning mirror does not reflect the top or the bottom surface specular reflection. A first and second polarizing element may also be included to detect additional types of defects on either surface.

    Differential Excitation Raman Spectroscopy
    309.
    发明申请

    公开(公告)号:US20170299512A1

    公开(公告)日:2017-10-19

    申请号:US15099088

    申请日:2016-04-14

    CPC classification number: G01N21/636 G01N21/65 G01N2201/06113 G01N2201/0683

    Abstract: Raman instrumentation for detecting for the presence of a molecular species in a including: a source of radiation for pumping the sample; apparatus for controlling the frequency and pulse width of radiation from the pumping source; a Raman spectrometer including a detector and means for collecting scattered photons from the sample; a radiation source for probing the sample; means for directing radiation from the probing source to the sample; and means to interface the spectrometer with the source of radiation for pumping. The radiation source for probing is, preferably, a monochromatic light source emitting radiation in at least one of the group including UV, visible, and near infrared radiation and, preferably, in the range of 220-1080 nm. The photons collected from the sample include elastically and inelastically scattered photons, and the spectrometer further including means for rejecting the elastically scattered photons. The pumping source is a microwave source.

Patent Agency Ranking