Patents by Inventor David J. Cammenga

David J. Cammenga 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).

  • Patent number: 10029940
    Abstract: The roughness of a separation surface formed along a process path along which a plurality of laser-induced channels is formed in a substrate can be controlled through process parameters. Laser pulse power can be varied to vary the resulting roughness. Higher laser pulse power can form larger laser-induced channels, enabling larger inter-channel spacing and/or higher roughness in applications where it is desired. Lower laser pulse power can be employed to achieve smoother separation surfaces when desired.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: July 24, 2018
    Assignee: GENTEX CORPORATION
    Inventors: Kurtis L. Geerlings, David J. Cammenga, Donald L. Bareman, William L. Tonar
  • Patent number: 10023028
    Abstract: An autodimming window assembly for a vehicle such as an aircraft includes a UI devoid of movable elements and integrated with a dust cover of the window assembly. A dust cover optionally includes a lightguide configured to deliver light from a light source associated with the assembly and indicia representing an operational characteristic of the UI and articulated to the dust cover.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 17, 2018
    Assignee: GENTEX CORPORATION
    Inventors: Mark D Bugno, David J Cammenga, Bradley L Busscher, David I Driscoll, Kevin L Ash, Alex K Cammenga, Andrew D Weller
  • Publication number: 20180170263
    Abstract: An electro-optic element of a display of a vehicle includes a first substantially transparent substrate defining a first surface and a second surface. A first edge extends around the first substrate. A second substantially transparent substrate defines a third surface and a fourth surface. A second edge extends around the second substrate. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. At least one of the first and second edges is stepped proximate the seal to define a channel. An electro-optic material is positioned within the cavity.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 21, 2018
    Applicant: Gentex Corporation
    Inventors: Adam R. Heintzelman, Juan C. Lara, Christopher M. Derry, David J Cammenga
  • Publication number: 20180129046
    Abstract: A heads up display system of a vehicle includes a combiner screen having a first substantially transparent substrate defining a first surface and a second surface, a second substantially transparent substrate defining a third surface and a fourth surface. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic material is positioned within the cavity and a transflective layer having a multilayer polymeric film positioned on one of the first and second surfaces, and a projector for projecting light having a first polarization toward the first surface of the first substrate.
    Type: Application
    Filed: January 9, 2018
    Publication date: May 10, 2018
    Applicant: Gentex Corporation
    Inventors: David J. Cammenga, William L. Tonar, David L. Poll
  • Patent number: 9927609
    Abstract: A heads up display system of a vehicle including a combiner screen having a first substantially transparent substrate defining a first surface and a second surface, a second substantially transparent substrate defining a third surface and a fourth surface. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic material is positioned within the cavity and a reflective polarizer is positioned on one of the first and second surfaces. A projector projects light having a first polarization toward the first surface of the first substrate.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: March 27, 2018
    Assignee: GENTEX CORPORATION
    Inventors: David J. Cammenga, William L. Tonar, David L. Poll
  • Patent number: 9878400
    Abstract: A laser system is configured to form laser-induced channels in a substrate at a plurality of spaced apart locations along a process path. The laser system includes a laser delivery assembly that receives the laser beam along a receiving axis and directs the laser beam toward the substrate along an impingement axis that forms an oblique angle with a surface of the substrate. The substrate can be divided into separate first and second portions along a separation surface having a draft angle, thereby facilitating substrate division with a zero-kerf process.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: January 30, 2018
    Assignee: GENTEX CORPORATION
    Inventors: Niels A. Olesen, David A. Bender, Kurtis L. Geerlings, David J. Cammenga
  • Publication number: 20180024401
    Abstract: A rearview mirror assembly is provided that includes a bezel, and an electro-optic element that includes a first substantially transparent substrate defining first and second surfaces. The second surface includes a first electrically conductive layer. A second substrate defines third and fourth surfaces and a hole extending between the third and fourth surfaces. The third surface includes a second electrically conductive layer. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. A conductive bus is positioned proximate the hole of the second substrate and an electro-optic material is disposed within the cavity. The bezel extends onto at least one of the third and fourth surfaces of the second substrate.
    Type: Application
    Filed: July 19, 2017
    Publication date: January 25, 2018
    Inventors: Joel A. Stray, William L. Tonar, David J. Cammenga
  • Publication number: 20170349103
    Abstract: A vehicle display mirror system is disclosed. The system comprises a display device and a reflecting polarizer. The display device is operable to display image data on a display surface as display light. The reflecting polarizer comprises a light receiving surface proximate the display surface and configured to output the display light in a first polarization from an emitting surface. The system further comprises a liquid crystal element, a polarizing element, and a controller. The controller is in communication with the liquid crystal element and configured to selectively align a liquid crystal material to pass the display light through the liquid crystal element and deactivate the liquid crystal element to adjust a received light from the first polarization to a second polarization and reflect the second polarization from the emitting surface.
    Type: Application
    Filed: June 2, 2017
    Publication date: December 7, 2017
    Inventors: William L. Tonar, David J. Cammenga, Gary J. Dozeman, Danny L. Minikey, JR.
  • Patent number: 9838653
    Abstract: An imager module for a vehicle includes a support having a first side and a second side. A shroud is operably coupled with the first side. The support and the shroud define a cavity. A viewing aperture is disposed in one of the support and the shroud. An imager system is disposed in the cavity. An electrical connector is configured to provide communication with the imager system. The electrical connector is disposed outside the cavity in abutting contact with the second side of the support.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: December 5, 2017
    Assignee: GENTEX CORPORATION
    Inventors: Richard T. Fish, Jr., Peter N. Rizk, Danny L. Minikey, Jr., Mark R. Roth, Frederick T. Bauer, Christian M. Kemperman, Danny L. Suman, Andrew J. LeVesque, David J. Cammenga, Michael F. Lisowski, Sandra Lynn Suman
  • Publication number: 20170297481
    Abstract: An illumination assembly configured to emit diffuse light through an indicator is disclosed. The assembly comprises a substrate having an applique disposed thereon. The applique forms an opening configured to transmit light through the substrate. The assembly further comprises a light source in connection with a circuit and configured to emit light through the shape. A diffusing layer is applied to a surface of the assembly between the circuit and the substrate. The diffusing layer comprises a resin material configured to cure in response to exposure to ultraviolet light or heat. The diffusing layer further comprises a filler material comprising a plurality of beaded structures configured to diffuse light from the light source.
    Type: Application
    Filed: April 14, 2017
    Publication date: October 19, 2017
    Inventors: Garret C. DeNolf, David J. Cammenga, Adam R. Heintzelman
  • Patent number: 9766496
    Abstract: An emissive display system includes an electro-optic device having a first substantially transparent substrate including first and second surfaces. At least one of the first and second surfaces includes a first electrically conductive layer. A second substantially transparent substrate includes third and fourth surfaces, at least one including a second electrically conductive layer. A primary seal between the second and third surfaces includes a first epoxy layer and a second epoxy layer. A gasket is disposed between the first and second epoxy layers. The seal and the first and second substrates define a substantially hermetic cavity therebetween. An electro-optic medium is disposed in the cavity and is variably transmissive such that the electro-optic device is operable between substantially clear and darkened states. A substantially transparent light emitting display is disposed adjacent to the electro-optic device, which is converted to the darkened state when the light emitting display is emitting light.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: September 19, 2017
    Assignee: GENTEX CORPORATION
    Inventors: David J. Cammenga, William L. Tonar, Tammy G. Morgan, David A. Theiste
  • Publication number: 20170261830
    Abstract: A vehicular rearview assembly with a mirror element having a curved or rounded edge on the first surface that is fully observable from the front of the assembly, a complex peripheral ring, and a user interface with switches and sensors that activate and configure pre-defined function(s) or device(s) of the assembly in response to the user input applied to the user interface. The mirror element is supported by a hybrid carrier co-molded of at least two materials, a portion of which is compressible between the housing shell and an edge of the mirror element. The peripheral ring may include multiple bands. Electrical communications between the electronic circuitry, the mirror element, and the user interface utilize connectors configured to exert a low contact force, onto the mirror element, limited in part by the strength of adhesive affixing the EC element to an element of the housing of the assembly.
    Type: Application
    Filed: May 24, 2017
    Publication date: September 14, 2017
    Applicant: Gentex Corporation
    Inventors: Henry A. Luten, George A. Neuman, David J. Cammenga, Juan C. Lara
  • Publication number: 20170239749
    Abstract: A laser ablation process can be configured to reduce the appearance of or eliminate a potentially objectionable diffraction effect that can occur when a workpiece or product that has been subjected to the ablation process interacts with light. The diffraction effect can be reduced by introducing irregularity into the arrangement of overlapping laser spots during the process. Other process parameters may be modified to reduce the diffraction effect, such as laser scan speed, laser pulse frequency, the position of the focal plane of the laser, the configuration of raster lines, or the energy profile of the laser beam, for example. The process modifications and configurations are particularly useful with products including an ablated surface that is intended to reflect light or to allow light to pass therethrough as part of its function.
    Type: Application
    Filed: July 29, 2015
    Publication date: August 24, 2017
    Inventors: Kurtis L. GEERLINGS, David J. CAMMENGA, Donald L. BAREMAN, Henry A. LUTEN
  • Patent number: 9676334
    Abstract: A rearview assembly having a mounting structure configured to be operably coupled with a vehicle. A housing is operably connected with the mounting structure and a rearward viewing device is supported by one of the housing and the mounting structure. The rearward viewing device provides a rearward view to a vehicle driver and includes a front substrate and a rear substrate. The entire front surface of the front substrate is exposed and the entire rear substrate is positioned behind the front substrate. A concealing layer is disposed about a periphery of the rearward viewing device between the front substrate and the rear substrate. A partially optically transparent bezel is disposed adjacent to both the rearward viewing device and the housing, the optically transparent bezel having an edge radius greater than 2.5 mm and the optically transparent bezel being substantially flush with the front surface of the front substrate.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: June 13, 2017
    Assignee: GENTEX CORPORATION
    Inventors: David J. Cammenga, Danny L. Minikey, Jr., Mark R. Roth, William L. Tonar, Jeremy A. Fogg, Michael F. Lisowski, Peter N. Rizk
  • Publication number: 20170100991
    Abstract: A vehicle sunroof comprising an electro-optic device is disclosed. The electro-optic device forms a variable transmission window comprising a first layer, a second layer, and an electro-optic medium disposed between the first layer and the second layer. At least one of the first layer and the second layer correspond to a polymeric film. The sunroof further comprises a frame configured to connect the electro-optic device to the vehicle.
    Type: Application
    Filed: October 7, 2016
    Publication date: April 13, 2017
    Inventors: David J. Cammenga, David L. Poll, William L. Tonar
  • Publication number: 20170102601
    Abstract: A window assembly is provided that includes an electro-optic element with a first substantially transparent substrate defining first and second surfaces. The second surface has a first electrically conductive layer. A second substantially transparent substrate defines third and fourth surfaces. The third surface has a second electrically conductive layer. A cavity is defined between the first and second substrates. An electro-optic medium is disposed in the cavity. The electro-optic medium is variably transmissive such that the electro-optic element is operable between substantially clear and darkened states. A pane is positioned proximate the electro-optic element and an infrared reflective film is positioned on at least one of the pane and the electro-optic element.
    Type: Application
    Filed: October 7, 2016
    Publication date: April 13, 2017
    Applicant: Gentex Corporation
    Inventors: Henry A. Luten, David I. Driscoll, Kevin L. Ash, Michael T. Stephenson, David J. Cammenga
  • Publication number: 20170088055
    Abstract: A display mirror assembly for a vehicle is presented that includes a full display module and an electro-optic element that includes a first substantially transparent substrate having first and second surfaces disposed on opposite sides thereof. The second surface includes a first electrically conductive layer. A second substantially transparent substrate has third and fourth surfaces disposed on opposite sides thereof. The third surface includes a second electrically conductive layer. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic medium is disposed in the cavity. The electro-optic medium is variably transmissive such that the electro-optic medium is operable between generally clear and darkened states. A first electrical connection and a second electrical connection are positioned on the same side of the electro-optic element.
    Type: Application
    Filed: September 28, 2016
    Publication date: March 30, 2017
    Applicant: Gentex Corporation
    Inventors: David J. Cammenga, Joel A. Stray
  • Patent number: 9606412
    Abstract: A window system is provided that includes an electro-optic element having a first substantially transparent substrate defining first and second surfaces. The second surface has a first electrically conductive layer and a second substantially transparent substrate defines third and fourth surfaces. The third surface has a second electrically conductive layer and a primary seal disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic medium is disposed in the cavity that is variably transmissive such that the electro-optic element is operable between substantially clear and darkened states. A polymeric dust cover is positioned away from the electro-optic element defining at least two major surfaces and at least one indicia disposed in the dust cover. The indicia includes a plurality of damage channels having an aspect ratio greater than about 10:1.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: March 28, 2017
    Assignee: GENTEX CORPORATION
    Inventors: Kurtis L. Geerlings, David J. Cammenga
  • Patent number: 9575359
    Abstract: An emissive display system includes an electro-optic device having a first substantially transparent substrate including first and second surfaces disposed on opposite sides thereof. At least one of the first and second surfaces includes a first electrically conductive layer. A second substantially transparent substrate includes third and fourth surfaces disposed on opposite sides thereof. At least one of the third and fourth surfaces includes a second electrically conductive layer. A primary seal disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic medium is disposed in the cavity and is variably transmissive such that the electro-optic device is operable between substantially clear and darkened states. A substantially transparent light emitting display is disposed adjacent to the electro-optic device, which is converted to the darkened state when the light emitting display is emitting light.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: February 21, 2017
    Assignee: GENTEX CORPORATION
    Inventors: David A. Theiste, Leroy J. Kloeppner, Sue F. Franz, Kevin L. Ash, William L. Tonar, David J. Cammenga
  • Publication number: 20170045737
    Abstract: A heads up display system of a vehicle including a combiner screen having a first substantially transparent substrate defining a first surface and a second surface, a second substantially transparent substrate defining a third surface and a fourth surface. A primary seal is disposed between the first and second substrates. The seal and the first and second substrates define a cavity therebetween. An electro-optic material is positioned within the cavity and a reflective polarizer is positioned on one of the first and second surfaces. A projector projects light having a first polarization toward the first surface of the first substrate.
    Type: Application
    Filed: June 24, 2016
    Publication date: February 16, 2017
    Applicant: Gentex Corporation
    Inventors: David J. Cammenga, William L. Tonar, David L. Poll