Patents by Inventor David Cammenga

David 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).

  • Publication number: 20080068520
    Abstract: An inventive rearview assembly for a vehicle may comprise a mirror element and a display including a light management subassembly. The subassembly may comprise an LCD placed behind a transflective layer of the mirror element. Despite a low transmittance through the transflective layer, the inventive display is capable of generating a viewable display image having an intensity of at least 250 cd/m2 and up to 3500 cd/m2. The display includes a novel backlighting subassembly and novel optical components including a magnifying system, a depolarizer, a reflector, and a reflective polarizer. The display may be configured to display an image having edges contoured to correspond to the edges of the mirror element.
    Type: Application
    Filed: March 9, 2007
    Publication date: March 20, 2008
    Inventors: Danny Minikey, Mark Newton, Ethan Lee, William Tonar, Darin Tuttle, David Cammenga, John Anderson, John Ostreko, Christian Kemperman, David Blaker
  • Publication number: 20080049295
    Abstract: A mirror includes an electro-optic mirror subassembly, and a thin-profiled bezel attached around a perimeter of the electrochromic mirror subassembly. The electro-optic mirror subassembly is supported on a carrier by an adheringly bonded heater and foam tape in a laminar arrangement. The bezel may be bonded to an edge of the front surface of the front element of the electro-optic mirror subassembly, and/or may be bonded and/or interlockingly mechanically attached to an edge of the carrier. Alternatively, the bezel can be a strip of paint or thin coating material. The bezel can be molded in place, or can be pre-molded and elastically stretched to permit assembly. In one form, the bezel includes a laterally-extending fin that prevents seeing past the bezel into the inside of a mirror housing. In at least one embodiment, the assembly has no bezel or only a bezel on one edge.
    Type: Application
    Filed: October 30, 2007
    Publication date: February 28, 2008
    Inventors: William Tonar, Frederick Bauer, John Arnold, David Cammenga, John Carter, Bradley Busscher, Jeremy Fogg
  • Publication number: 20080030836
    Abstract: Electro-optic elements are becoming commonplace in a number of vehicular and architectural applications. Various electro-optic element configurations provide variable transmittance and or variable reflectance for windows and mirrors. The present invention relates to various thin-film coatings, electro-optic elements and assemblies incorporating these elements.
    Type: Application
    Filed: March 5, 2007
    Publication date: February 7, 2008
    Inventors: William Tonar, John Anderson, Jeffrey Forgette, George Neuman, Gary Dozeman, David Cammenga, Henry Luten, G. Bruce Poe, Nelson Brummel, Lansen Perron
  • Publication number: 20080030835
    Abstract: The inventive electrochromic mirror may be used in a vehicle rearview mirror assembly having a light source positioned behind the electrochromic mirror for selectively projecting light through the mirror and/or a light sensor positioned behind the electrochromic mirror for selectively receiving light through the mirror. The electrochromic mirror includes front and rear spaced elements each having front and rear surfaces and being sealably bonded together in a spaced-apart relationship to define a chamber, a layer of transparent conductive material disposed on the rear surface of the front element, an electrochromic material is contained within the chamber, and a second electrode overlies the front surface of the rear element in contact with the electrochromic material. The second electrode includes a layer of reflective material and a partially transmissive coating of and is disposed over substantially all of the front surface of the rear element.
    Type: Application
    Filed: April 24, 2007
    Publication date: February 7, 2008
    Inventors: William Tonar, Jeffrey Forgette, John Anderson, Jon Bechtel, John Carter, Joseph Stam, David Cammenga
  • Publication number: 20070285759
    Abstract: An electrical control system is disclosed for controlling a plurality of variable transmittance windows. The electrical control system comprises a master control circuit and user input circuits for supplying control signals representing transmittance levels for the variable transmission windows, and a plurality of slave window control circuits coupled to the master control circuit, user input circuits and the variable transmittance windows. Each slave window control circuit controls the transmittance of at least one of the variable transmission windows in response to control signals received from the master control circuit and/or user input circuits. Also disclosed are novel methods for the manufacture of an electrochromic device used in variable transmittance windows. Novel structural features for improving heat transfer away from the windows, shielding the window from external loads, and improving the electrical performance of the windows are also disclosed.
    Type: Application
    Filed: June 11, 2007
    Publication date: December 13, 2007
    Inventors: Kevin Ash, Bradley Busscher, Robert Turnbull, George Neuman, David Cammenga, David Theiste
  • Publication number: 20070024947
    Abstract: The present invention relates to improved electro-optic rearview mirror elements and assemblies incorporating the same.
    Type: Application
    Filed: June 29, 2006
    Publication date: February 1, 2007
    Inventors: William Tonar, David Cammenga, John Anderson, David Poll, George Neuman, Joel Stray, Bradley Busscher, Kenton Ypma
  • Publication number: 20070019296
    Abstract: Environmentally improved rearview mirror assemblies are provided which incorporate a reflective element with variable reflectance. In one embodiment, the environmentally improved rearview mirror assembly is substantially free of cadmium (Cd). In another embodiment, the environmentally improved rearview mirror assembly is substantially free of lead (Pb). In yet another embodiment, the environmentally improved rearview mirror assembly is substantially free of mercury (Hg). In a further embodiment, the environmentally improved rearview mirror assembly is substantially free of poly-vinyl-chloride (PVC). In yet a further embodiment, the environmentally improved rearview mirror assembly is substantially free of halogen producing chemicals such as bromine (Br).
    Type: Application
    Filed: September 25, 2006
    Publication date: January 25, 2007
    Inventors: Frederick Bauer, William Tonar, David Cammenga, John Anderson, David Poll, George Neuman, Joel Stray, Bradley Busscher, Kenton Ypma
  • Publication number: 20060245026
    Abstract: The present invention relates to improved electro-optic rearview mirror elements and assemblies incorporating the same.
    Type: Application
    Filed: June 29, 2006
    Publication date: November 2, 2006
    Inventors: William Tonar, David Cammenga, John Anderson, David Poll, George Neuman, Joel Stray, Bradley Busscher, Kenton Ypma
  • Publication number: 20060245025
    Abstract: The present invention relates to improved electro-optic rearview mirror elements and assemblies incorporating the same.
    Type: Application
    Filed: June 29, 2006
    Publication date: November 2, 2006
    Inventors: William Tonar, David Cammenga, John Anderson, David Poll, George Neuman, Joel Stray, Bradley Busscher, Kenton Ypma
  • Publication number: 20060203323
    Abstract: According to one embodiment of the present invention, an electrochromic rearview mirror assembly for a vehicle includes an electrochromic mirror having a variable reflectivity, a glare sensor for sensing levels of light directed towards the front element from the rear of the vehicle, an ambient sensor for sensing levels of ambient light, a display positioned behind the partially transmissive, partially reflective portion of the reflector for displaying information therethrough.
    Type: Application
    Filed: May 8, 2006
    Publication date: September 14, 2006
    Inventors: William Tonar, Jeffrey Forgette, John Anderson, David Cammenga, Robert Turnbull, Philip Hall, Mark Bugno, Alan Watson
  • Publication number: 20060158735
    Abstract: An electro-optic device is disclosed having a self-cleaning, hydrophilic optical coating. The electro-optic device preferably forms an external rearview mirror for a vehicle. The optical coating preferably includes photocatalytic layer(s), a hydrophilic layer, and a color suppression coating. The electro-optic device is preferably an electrochromic mirror. The disclosed optical coating exhibits a reflectance at the front surface of the reflective element that is less than about 20 percent, and has sufficient hydrophilic properties such that water droplets on a front surface of the optical coating exhibit a contact angle of less than about 20°. The mirror exhibits a C* value of less than 25.
    Type: Application
    Filed: September 30, 2005
    Publication date: July 20, 2006
    Inventors: William Tonar, John Anderson, David Cammenga
  • Publication number: 20060126150
    Abstract: The inventive electrochromic mirror may be used in a vehicle rearview mirror assembly having a light source positioned behind the electrochromic mirror for selectively projecting light through the mirror. The electrochromic mirror includes front and rear spaced elements each having front and rear surfaces and being sealably bonded together in a spaced-apart relationship to define a chamber, a layer of transparent conductive material disposed on the rear surface of the front element, an electrochromic material is contained within the chamber, and a second electrode overlies the front surface of the rear element in contact with the electrochromic material. The second electrode includes a layer of reflective material and a partially transmissive coating of and is disposed over substantially all of the front surface of the rear element. The second electrode further includes a region in front of the light source that is at least partially transmissive.
    Type: Application
    Filed: February 6, 2006
    Publication date: June 15, 2006
    Inventors: William Tonar, Jeffrey Forgette, John Anderson, Jon Bechtel, John Carter, Joseph Stam, David Cammenga
  • Publication number: 20060056003
    Abstract: The present invention relates to improved electro-optic rearview mirror elements and assemblies incorporating the same.
    Type: Application
    Filed: February 25, 2005
    Publication date: March 16, 2006
    Inventors: William Tonar, David Cammenga, John Anderson, David Poll, George Neuman, Joel Stray, Bradley Busscher, Kenton Ypma
  • Publication number: 20050007645
    Abstract: The inventive electrochromic mirror may be used in a vehicle rearview mirror assembly having a light source positioned behind the electrochromic mirror for selectively projecting light through the mirror. The electrochromic mirror includes front and rear spaced elements each having front and rear surfaces and being sealably bonded together in a spaced-apart relationship to define a chamber, a layer of transparent conductive material disposed on the rear surface of the front element, an electrochromic material is contained within the chamber, and a second electrode overlies the front surface of the rear element in contact with the electrochromic material. The second electrode includes a layer of reflective material and a partially transmissive coating of and is disposed over substantially all of the front surface of the rear element. The second electrode further includes a region in front of the light source that is at least partially transmissive.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 13, 2005
    Inventors: William Tonar, Jeffrey Forgette, John Anderson, Jon Bechtel, John Carter, Joseph Stam, David Cammenga