Patents by Inventor Jack H. Belgum
Jack H. Belgum has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9239443Abstract: An optical system and method for illuminating an object under investigation with filtered light is disclosed. In one embodiment, the system comprises a linear filter array having a plurality of elongate variable bandpass filters. The variable bandpass filters each have a cam follower and are translatable along a longitudinal axis, whereby translation brings a selected filter in line with a beam of light. The cam follower of selected filter engages a cam adjacent to the array. This causes tilting of the filter to a desired angle thereby allowing precise selection of the bandpass frequency of the selected filter. Preferably, the filter can be tilted by an angle of up to 60°. Each elongate filter is preferably substantially rectangular and has a long dimension that is at least about twice the short dimension.Type: GrantFiled: June 5, 2012Date of Patent: January 19, 2016Assignee: SUTTER INSTRUMENT COMPANYInventors: Jack H. Belgum, Frederick Siedenburg
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Patent number: 8988779Abstract: An optical system and method for combining multiple beams along a single light path is disclosed. In a preferred embodiment, a plurality of bandpass filters are arranged about the sides of a regular pentagon, the band pass filters being reflective of light wavelengths outside of the bandpass range. A plurality of light sources are positioned such that light from a source passes through an associated bandpass filter, preferably at an angle of about 18°. Light from the first light source passes out of the pentagonal housing after passing through the filter. Light from the other light sources are reflected off of the interior surfaces filters so as to combine with the light from the first light source.Type: GrantFiled: December 14, 2012Date of Patent: March 24, 2015Assignee: Sutter Instrument CompanyInventor: Jack H. Belgum
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Publication number: 20140168785Abstract: An optical system and method for combining multiple beams along a single light path is disclosed. In a preferred embodiment, a plurality of bandpass filters are arranged about the sides of a regular pentagon, the band pass filters being reflective of light wavelengths outside of the bandpass range. A plurality of light sources are positioned such that light from a source passes through an associated bandpass filter, preferably at an angle of about 18°. Light from the first light source passes out of the pentagonal housing after passing through the filter. Light from the other light sources are reflected off of the interior surfaces filters so as to combine with the light from the first light source.Type: ApplicationFiled: December 14, 2012Publication date: June 19, 2014Applicant: Sutter Instrument CompanyInventor: Jack H. Belgum
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Patent number: 8733978Abstract: An optical system and method for illuminating an object under investigation with filtered light is disclosed. In one embodiment, the system comprises a filter wheel having a plurality of variable bandpass filters. The filter wheel is rotatable about two axis, whereby rotation about the first axis brings a selected filter in line with a collimated beam of white light and rotation about the second axis adjusts the angle of the filter relative to the light beam in order to adjust the bandpass frequencies. A second beam of white light, which may be from a second light source, can also be reflected off of the face of the filter in a manner that illuminates the object with substantially white light. In one embodiment, the object may be alternately or simultaneously illuminated with filtered light or with reflected white light. The filter can be used as a bandstop or band rejection filter to illuminate the object with white light that is missing a narrow frequency band.Type: GrantFiled: June 17, 2011Date of Patent: May 27, 2014Assignee: Sutter Instrument CompanyInventors: Dale G. Flaming, Jack H. Belgum
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Publication number: 20130321921Abstract: An optical system and method for illuminating an object under investigation with filtered light is disclosed. In one embodiment, the system comprises a linear filter array having a plurality of elongate variable bandpass filters. The variable bandpass filters each have a cam follower and are translatable along a longitudinal axis, whereby translation brings a selected filter in line with a beam of light. The cam follower of selected filter engages a cam adjacent to the array. This causes tilting of the filter to a desired angle thereby allowing precise selection of the bandpass frequency of the selected filter. Preferably, the filter can be tilted by an angle of up to 60°. Each elongate filter is preferably substantially rectangular and has a long dimension that is at least about twice the short dimension.Type: ApplicationFiled: June 5, 2012Publication date: December 5, 2013Applicant: Sutter Instrument CompanyInventors: Jack H. Belgum, Frederick Siedenburg
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Publication number: 20120320578Abstract: An optical system and method for illuminating an object under investigation with filtered light is disclosed. In one embodiment, the system comprises a filter wheel having a plurality of variable bandpass filters. The filter wheel is rotatable about two axis, whereby rotation about the first axis brings a selected filter in line with a collimated beam of white light and rotation about the second axis adjusts the angle of the filter relative to the light beam in order to adjust the bandpass frequencies. A second beam of white light, which may be from a second light source, can also be reflected off of the face of the filter in a manner that illuminates the object with substantially white light. In one embodiment, the object may be alternately or simultaneously illuminated with filtered light or with reflected white light. The filter can be used as a bandstop or band rejection filter to illuminate the object with white light that is missing a narrow frequency band.Type: ApplicationFiled: June 17, 2011Publication date: December 20, 2012Applicant: Sutter Instrument CompanyInventors: Dale G. Flaming, Jack H. Belgum
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Patent number: 5181948Abstract: A micropipette puller of the type having a laser for heating a length of capillary to be pulled is shown. Before intercepting the capillary, the laser beam is first passed through an aperture to reduce the beam width to a desired size. In one embodiment the aperture is made by a pair of movable shutters allowing the beam width to be adjusted. In this embodiment the spacing between the shutters can be made small in relation to the length of capillary to be heated and the resulting slit scanned back and forth along the capillary. Fixed, removable aperture plates means are also shown.Type: GrantFiled: July 12, 1991Date of Patent: January 26, 1993Assignee: Sutter Instrument CompanyInventor: Jack H. Belgum