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: 11932170
    Abstract: An improved device switchable between reflective and display states comprising an optical element and a display element. The optical element comprising a liquid crystal medium disposed between first and second substrates. The optical element may further comprise a first electrode, a second electrode, an absorptive polarizer, and a reflective polarizer. The first electrode and the absorptive polarizer may be disposed in a first direction relative the liquid crystal medium. Similarly, the second electrode and the reflective polarizer may be disposed in a second direction relative the liquid crystal medium. The second direction is opposite the first direction. In some embodiments, one or more of the absorptive and reflective polarizers may be further disposed between the first and second substrates. The display may be disposed in the first direction relative the optical element. Additionally, the device may further comprise a housing. In some embodiments, the housing may not have a bezel.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: March 19, 2024
    Assignee: GENTEX CORPORATION
    Inventors: Xiaoxu Niu, David J. Cammenga, William L. Tonar
  • Patent number: 11753858
    Abstract: A movable window apparatus is disclosed. The movable window apparatus may comprise a window panel, a first electrical contact, and a second electrical contact. The window panel is operable between an opened position and a closed position. The first electrical contact is coupled to the window panel. The second electrical contact is coupled to the vehicle. Further, the first electrical contact is operable to engage the second electrical contact when the window panel is in a first position and disengage the second electrical contact when the window panel is out of the first position. Engagement of the second electrical contact by the first electrical contact forms a conductive connection. This conductive connection has the advantage of being engageable and dis-engageable. Accordingly, the movable window apparatus enables a conductive connection with a window panel without inhibiting the movement of the window panel between two or more positions.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: September 12, 2023
    Assignee: GENTEX CORPORATION
    Inventors: Drew D. Brennan, David J. Cammenga, Luke A. Bomers
  • Publication number: 20230280603
    Abstract: An electro-optic assembly comprises a first substrate and a second substrate. The first and second substrates are disposed in a parallel and spaced apart relationship so as to define a cavity therebetween. A primary seal extends between the first and second substrates. An electro-optic medium is located in the cavity and retained in an inboard direction by the primary seal. A plurality of first spacer elements are coupled to the primary seal. A break wall is located in the inboard direction or an outboard direction from the primary seal. The break wall extends between the first and second substrates and generally along the primary seal. A plurality of second spacer elements are coupled to the break wall. A space is defined between the primary seal and the break wall in the inboard-outboard directions.
    Type: Application
    Filed: March 1, 2023
    Publication date: September 7, 2023
    Applicant: GENTEX CORPORATION
    Inventors: Stephen F. Richlich, Gerald W. Redwine, Donald L. Bareman, David J. Cammenga
  • Publication number: 20230271555
    Abstract: A rearview apparatus for a vehicle includes a first measurement device configured to detect a vehicle orientation. The first measurement device is in connection with a portion of the vehicle that maintains a fixed relationship relative to a body of the vehicle. A second measurement device is configured to detect an apparatus orientation of the rearview apparatus, which is adjustable relative to the body of the vehicle. A controller is in communication with the first measurement device and the second measurement device. The controller is configured to identify an orientation difference between the vehicle orientation and the apparatus orientation.
    Type: Application
    Filed: February 23, 2023
    Publication date: August 31, 2023
    Applicant: Gentex Corporation
    Inventors: Xiaoxu Niu, Joshua D. Lintz, David J. Cammenga
  • Patent number: 11719868
    Abstract: A system for reducing haze in a display comprises a first substrate having a first surface and a second surface; a masking layer disposed on the first surface of the first substrate; an optically clear adhesive; at least one of a display element and an imager; a first linear polarizer disposed between the display element and the optically clear adhesive; and a second linear polarizer. The masking layer comprises at least one opening in optical communication with at least one of the display element and the imager. The second linear polarizer may have a transmission angle generally aligned to the transmission angle of the first linear polarizer.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: August 8, 2023
    Assignee: GENTEX CORPORATION
    Inventors: David J. Cammenga, Gary J. Dozeman, Adam R. Heintzelman
  • Patent number: 11709381
    Abstract: A heads-up display may comprise a viewing screen having a reflective surface; a housing defining an opening; a display element disposed within the housing and comprising an integral linear polarizer configured to polarize light in a first direction; and a first linear polarizer disposed between the display element and the viewing screen covering the opening defined by the housing configured to polarize light in the first direction. The display element may be capable of causing images to be displayed on the viewing screen.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: July 25, 2023
    Assignee: GENTEX CORPORATION
    Inventors: David J. Cammenga, Adam R. Heintzelman, Gary J. Dozeman, Ryan B. Balili
  • Publication number: 20230205034
    Abstract: An electrochromic device is provided that includes: a first substrate having a first surface and a second surface opposite the first surface, the first substrate having a multilayer polymer film; a first electrode; a second substrate having a third surface and a fourth surface opposite the third surface, the second substrate spaced from the first substrate with the second and third surfaces facing but spaced from one another; a second electrode; and an electrochromic layer positioned between the first and second electrodes. The first electrode is positioned between the second surface and the electrochromic medium and the second electrode is positioned between the third surface and the electrochromic medium. The multilayer polymer film includes a nonpolar polymer layer as an outermost layer closest to the electrochromic medium.
    Type: Application
    Filed: December 27, 2022
    Publication date: June 29, 2023
    Inventors: William L. Tonar, David J. Cammenga
  • Patent number: 11624861
    Abstract: A vehicular rearview assembly, includes a front substrate defining a first surface and a second surface. The front substrate being substantially transparent. The front substrate defines a shaped edge along a periphery of the first surface. A first polarizer is coupled with the second surface. An electro-optic element is coupled to the first polarizer having a first substrate defining a first element surface and a second element surface. A second substrate is spaced away from the first substrate and defines a third element surface and a fourth element surface. An electro-optic material is positioned between the first and second substrates. A second polarizer is coupled to the fourth element surface. A display is configured to emit light having a first polarization into the second polarizer. A reflective layer is positioned between the front substrate and the display is configured to reflect both the first polarization of light and a second polarization of light.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: April 11, 2023
    Assignee: GENTEX CORPORATION
    Inventors: David J. Cammenga, Adam R. Heintzelman, Xiaoxu Niu
  • Patent number: 11586066
    Abstract: A vehicular rearview assembly includes an electro-optic element. A first substrate defines a first element surface and a second element surface. A first polarizer is coupled to the second element surface. A second substrate is spaced away from the first substrate and defines a third element surface and a fourth element surface. An electro-optic material is positioned between the first and second substrates. A second polarizer is coupled to the second substrate. A display is configured to emit light having a first polarization toward the second polarizer.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: February 21, 2023
    Assignee: GENTEX CORPORATION
    Inventors: David J. Cammenga, Adam R. Heintzelman, Xiaoxu Niu
  • Patent number: 11520208
    Abstract: A window control system includes a plurality of electro-optic devices configured to control a transmittance of light through each of the plurality of zones, and at least one sensor configured to identify an intensity of light transmitted through the at least one window. A controller k in communication with the electro-optic devices and the at least one sensor. The controller is configured to independently control the transmittance of the light through each of the zones based on at least one of a direction of the light and an intensity of the light detected in a passenger compartment of a vehicle.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: December 6, 2022
    Assignee: GENTEX CORPORATION
    Inventors: Autumn N. Lagowski, George A. Neuman, Michael T. Stephenson, Luke A. Bomers, Barry K. Nelson, Henry A. Luten, Dennis D. Festerling, Jr., David J. Cammenga, John S. Anderson, Michael J. VanAst
  • Patent number: 11467462
    Abstract: An electro-optic apparatus configured to adjust in transmittance in response to a control input comprises a first web substrate and a second web substrate. Each of the web substrates form a plurality of perimeter edges. A first edge is in connection with a first electrical terminal connecting in connection with a first electrode. A second edge opposing the first edge is in connection with a second electrical terminal in connection with a second electrode. A third edge and an opposing fourth edge comprise a barrier seal in a first configuration in connection with an exterior surface of each of the first web substrate and the second web substrate. The barrier seal encapsulates the electro-optic medium between an interior surface of each of the first web substrate and the second web substrate.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: October 11, 2022
    Assignee: GENTEX CORPORATION
    Inventors: Garret C. DeNolf, Gary J. Dozeman, George A. Neuman, William L. Tonar, Mario F. Saenger Nayver, John S. Anderson, Sheng Liu, Yuping Lin, David J. Cammenga, Joel A. Stray, Scott S. McNees
  • Patent number: 11465468
    Abstract: An overmold is disclosed, wherein the overmold may be incorporated into a window assembly. The overmold comprises a base portion and a receiving portion. The receiving portion may comprise a notch or a channel operable to receive a window. The window may be such that when coupled with the overmold, the sides of the overmold and the window are substantially co-planar. Accordingly, window may comprise a first and a second substrate, wherein the second substrate is coupled to a first side of the first substrate. Further, the first substrate may extend beyond the second substrate. Therefore, the overmold, when in abutting contact with the window, may extend onto the first side of the first substrate up to the second substrate.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: October 11, 2022
    Assignee: GENTEX CORPORATION
    Inventors: Nathan T. Overmyer, Luke A. Bomers, David J. Cammenga
  • Patent number: 11415864
    Abstract: A concealing device for an imager of a vehicle includes a photochromic lens cover with an external surface that is co-extensive with an adjacent portion of the vehicle and disposed proximate a lens of the imager. The photochromic lens cover is operable between a first condition wherein the photochromic lens cover is exposed to ultraviolet light and darkens to a transmissivity of less than 15% and a second condition wherein the photochromic lens cover includes a transmissivity of greater than 50%.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: August 16, 2022
    Assignee: GENTEX CORPORATION
    Inventors: Robert R. Turnbull, Xiaoxu Niu, David J. Cammenga
  • Patent number: 11340452
    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: Grant
    Filed: December 12, 2019
    Date of Patent: May 24, 2022
    Assignee: GENTEX CORPORATION
    Inventors: David J. Cammenga, William L. Tonar, David L. Poll
  • Patent number: 11307485
    Abstract: An imager module for a vehicle includes an imager having an imager lens. The imager is configured to collect image data from at least one of inside and outside the vehicle. A cover is disposed proximate the imager lens and configured to allow the imager to capture image data through the cover. The cover is operable between a first condition, wherein the imager is generally visible through the cover, and a second condition, wherein the imager is generally concealed from view by the cover.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: April 19, 2022
    Assignee: GENTEX CORPORATION
    Inventors: David J. Cammenga, Xiaoxu Niu, Kurtis L. Geerlings, Jason D. Hallack, Robert R. Turnbull, Carl N. Wassink
  • Patent number: 11295553
    Abstract: A vehicle monitoring system is configured to monitor a scanning region depicting a subject and includes a monitoring apparatus configured to capture scanning data in the scanning region depicting the subject. A feedback apparatus is configured to communicate alignment information from a portion of the vehicle to the subject. The alignment information indicates an alignment of the subject in the scanning region. A concealment apparatus is configured to conceal the scanning apparatus and selectively transmit the alignment information from the feedback apparatus. The system further includes a controller configured to activate the feedback apparatus revealing the alignment information identifying the alignment of the subject within the scanning region of the monitoring apparatus. The controller is further configured to control the scanning apparatus to capture the scanning data of the subject and monitor the subject in the scanning data.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: April 5, 2022
    Assignee: GENTEX CORPORATION
    Inventors: Bradley A. Bosma, David J. Cammenga, Ethan J. Lee, Brian G. Brackenbury, Danny L. Minikey, Jr., Mark R. Roth, Matthew W. Remijn, David M. Bostrom, Joshua D. Lintz
  • Patent number: 11269232
    Abstract: A switchable device is provided. The switchable device includes an electro-optic element switchable between a darkened state and a transmissive state in addition to a sensor having a field of view at least partially defined by a perimeter portion of the electro-optic element. The darkened state is configured to mask the sensor and visibly match the perimeter portion.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: March 8, 2022
    Assignee: GENTEX CORPORATION
    Inventors: Adam R. Heintzelman, George A. Neuman, David J. Cammenga, Mario F. Saenger Nayver, Jian Gao, Xiaoxu Niu
  • Patent number: 11130195
    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: Grant
    Filed: July 29, 2015
    Date of Patent: September 28, 2021
    Assignee: GENTEX CORPORATION
    Inventors: Kurtis L. Geerlings, David J. Cammenga, Donald L. Bareman, Henry A. Luten
  • Publication number: 20210208322
    Abstract: A system for reducing haze in a display comprises a first substrate having a first surface and a second surface; a masking layer disposed on the first surface of the first substrate; an optically clear adhesive; at least one of a display element and an imager; a first linear polarizer disposed between the display element and the optically clear adhesive; and a second linear polarizer. The masking layer comprises at least one opening in optical communication with at least one of the display element and the imager. The second linear polarizer may have a transmission angle generally aligned to the transmission angle of the first linear polarizer.
    Type: Application
    Filed: January 6, 2021
    Publication date: July 8, 2021
    Applicant: GENTEX CORPORATION
    Inventors: David J. Cammenga, Gary J. Dozeman, Adam R. Heintzelman
  • Publication number: 20210208426
    Abstract: A heads-up display may comprise a viewing screen having a reflective surface; a housing defining an opening; a display element disposed within the housing and comprising an integral linear polarizer configured to polarize light in a first direction; and a first linear polarizer disposed between the display element and the viewing screen covering the opening defined by the housing configured to polarize light in the first direction. The display element may be capable of causing images to be displayed on the viewing screen.
    Type: Application
    Filed: January 4, 2021
    Publication date: July 8, 2021
    Applicant: GENTEX CORPORATION
    Inventors: David J. Cammenga, Adam R. Heintzelman, Gary J. Dozeman, Ryan B. Balili