Switch Materials, Inc.

Solutia Canada Inc.

Simon Fraser University

Solatia Canada Inc.

Lucent Biosciences, Inc.

Neil Robin Branda

Duhane Lam

Jeremy Graham Finden

Jonathan Ross Sargent

Douglas Malcolm Wiggin

Matthew Paul Smit

Andreea Spantulescu

Simon James Gauthier

Peter Alexander Von Hahn

James Daniel Senior

Serguei Sviridov

Ali Hayek

Cynthia Elizabeth Shippam

Kyle Andrew Hope-Ross

Glen Ramsay Bremner

Matt Andrew Pilapil

Charles Joseph Gongming Loo

Zachary Bryce Erno

Andrea Jeannine Peters

Corbin Abe Giesbrecht

Anthony J Wigglesworth

Andrew Koutsandreas

Peter Gross

Farahnaz Nourmohammadian

Matthew Neal Roberts

Veronica Elizabeth Patricia Marshman

Natalie E Campbell

Bronwyn Hilary Gillon

Veronica Elizabeth Marshman

Karthik Vikram Siva Shanmugam

Bettina Wuestenberg

Vincent Lemieux

Michael Adams

Andrew J Myles

Andrea Peters

Karthik Vikram Shanmugam

Andrea Spantulescu

An apparatus is disclosed that includes a switchable optical filter having a layer of switchable material; a light source providing light of a wavelength that causes the switchable material to transition from a faded state to a dark state, or a dark state to a faded state; and a switch for controlling activation of the light source.

Optical filter with light source

The invention provides compositions and systems comprising a carrier and an element. The carrier is a network of polymers insoluble in water comprising phenolic hydroxyl moieties, aliphatic hydroxyl moieties or a combination thereof. An association between the carrier and the element is labile in response to biological demand and the lability of the association in the presence of water is less than the lability of the association in response to biological demand. Also provided are methods of making such compositions and methods for delivering the element to an organism.

Compositions, systems and methods for delivery of an element in response to biological demand

An apparatus comprising a switchable optical filter comprising a layer of switchable material, the switchable material comprising a photochromic/thermochromic, a photochromic/photochromic, or a photochromic/electrochromic compound; a first light source providing light of a wavelength that causes the switchable material to transition from a faded state to a dark state, or a dark state to a faded state; and a switch for controlling activation of the first light source.

A compound according to Formula IA and IB, reversibly convertible under photochromic and electrochromic conditions between a ring-open isomer A and a ring-closed isomer B is provided. For substitutent groups, Z is N, O or S; each Ris independently selected from the group consisting of H, or halo; each Ris independently selected from the group consisting of H, halo, a polymer backbone, alkyl or aryl; or, when both Rtogether form &#x2014;CH&#x2550;CH&#x2014; and form part of a polymer backbone; each Ris independently selected from the group consisting of H, halo, alkyl, alkoxy, thioalkyl or aryl; each Ris aryl; and each Ris independently selected from the group consisting of H, halo, alkyl, alkoxy, thioalkyl or aryl. 

Diarylethene compounds and uses thereof

An optical filter comprising a variable transmittance layer having a first spectrum in a dark state, and a second spectrum in a faded state; and a color balancing layer having a third spectrum; each of the first, second and third spectra comprising a visible portion; the first and third spectra combining to provide a dark state spectrum approximating a dark state target color, and the second and third spectra combining to provide a faded state spectrum approximating a faded state target color. The optical filter may further comprise a light attenuating layer. The optical filter may further comprise part of a laminated glass.

Optical filter comprising a variable transmittance layer

An apparatus comprising a switchable optical filter comprising a layer of switchable material, the switchable material comprising a photochromic/thermochromic, a photochromic/photochromic, or a photochromic/electrochromic compound; a first light source providing light of a wavelength that causes the switchable material to transition from a faded state to a dark state, or a dark state to a faded state; and a switch for controlling activation of the first light source

A composition comprising a diarylethene photochromic anodic species, a cathodic species and an electrolyte that comprises a supporting electrolyte and a solvent. Electrochromic devices such as optical filters are prepared from such compositions.

Photochromic-electrochromic compositions

Variable transmittance optical filters capable of transitioning from a light state to a dark state on exposure to UV radiation and from a dark state to a light state with application of an electric voltage are provided. The optical filters comprise a switching material that comprises one or more chromophores that have electrochromic and photochromic properties.

Variable transmittance optical filter and uses thereof

A optical filter comprising a variable transmittance layer having a first spectrum in a dark state, and a second spectrum in a faded state; and a color balancing layer having a third spectrum; each of the first, second and third spectra comprising a visible portion; the first and third spectra combining to provide a dark state spectrum approximating a dark state target color; and the second and third spectra combining to provide a fades state spectrum approximating a faded state target color. The optical filter may further comprise a light attenuating layer. The optical filter may further comprise part of a laminated glass.

A variable transmittance optical filter comprising: a first layer comprising a first substantially transparent substrate with a substantially co-planar (SC) electrode system disposed thereon, the SC electrode system made of transparent electrically conductive material and comprising at least one pair of electrically separate electrodes arranged in a substantially co-planar manner on the first substantially transparent substrate, each pair of electrically separate electrodes comprising a first electrode and a second electrode, a second layer proximate to the first layer and comprising a transition material that darkens in response to a non-electrical stimulus and lightens in response to application of an electric voltage; and an electrical connection system for electrically connecting the SC electrode system to a source of electric voltage.

Variable transmittance optical filter with substantially co-planar electrode system

A control system for a variable transmittance optical filter assembly includes a controller in communicatively coupled to a pair of load terminals, and a memory communicatively coupled to the controller and having encoded thereon statements and instructions executable by the controller to transition the optical filter assembly between operating states when coupled to the pair of load terminals. The controller is operable to perform any one or more of: allowing the optical filter assembly to transition to a dark state by shorting the load terminals together, maintaining the optical filter assembly in a hold mode by applying a pulse width modulated voltage signal across the load terminals, and transitioning the optical filter assembly between operative states by applying a voltage signal having voltage pulses of opposite polarities to the load terminals.

System and method for controlling an optical filter assembly

A self-powered variable transmittance optical device, such as a smart window or other device, and associated method are provided. The device comprises one or more transparent substrates, with a switching material disposed thereon or therebetween. The switching material may be a hybrid photochromic/electrochromic material capable of transitioning from a first transmittance state to a second transmittance state with application of electricity, and from second state to first state due to another stimulus, such as UV radiation. Electrodes are coupled to the switching material for applying electricity. An electrical system provides for controllable application of the electricity, and may store energy. Energy is provided by an energy-harvesting power source such as a solar cell or other photovoltaic source, or array thereof, or another device for harvesting vibrational or thermal energy. Energy harvesting, energy storage capacity and/or switching material may be configured to provide at least a predetermined level of device operability.

Variable transmittance optical devices

Growing community of inventors

Vancouver, Canada

Neil Robin Branda