An augmented display system with dynamic see-through transmittance control is disclosed. The augmented display system includes: an augmented display screen; a tandem electrochromic (EC) filter disposed over the augmented display screen. The tandem EC filter includes a first window having a dominant first transmittance characteristic and a second window having a dominant second transmittance characteristic; and an augmented display transmittance controller configured to individually control the activation of the first window and the second window of the tandem EC filter, wherein the augmented display transmittance controller is configured to: determine from an ambient light sensor output the transmittance required from the first window and the second window for a selected augmented display luminance; and apply appropriate drive voltage waveforms to the first window and the second window to achieve the determined transmittance.

An augmented display system with dynamic see-through transmittance control is disclosed. The augmented display system includes: an augmented display screen; a tandem electrochromic (EC) filter disposed over the augmented display screen. The tandem EC filter includes a first window having a dominant first transmittance characteristic and a second window having a dominant second transmittance characteristic; and an augmented display transmittance controller configured to individually control the activation of the first window and the second window of the tandem EC filter, wherein the augmented display transmittance controller is configured to: determine from an ambient light sensor output the transmittance required from the first window and the second window for a selected augmented display luminance; and apply appropriate drive voltage waveforms to the first window and the second window to achieve the determined transmittance.

The types and concentrations of multiple anodic electrochromic compounds are selected in such a manner that RG.sub.max is 1.37 or less, in which RG.sub.max is a maximum value among ratios between RGB signal ratios in the transmission state of an electrochromic device and in colored states of the anodic electrochromic compounds, the RGB signal ratios are obtained from T.sub.A(λ) and the sensitivity of a photodetector, and T.sub.A(λ) is a normalized variable transmittance obtained by a combination of absorptions of the anodic electrochromic compounds.

The types and concentrations of multiple anodic electrochromic compounds are selected in such a manner that RG.sub.max is 1.37 or less, in which RG.sub.max is a maximum value among ratios between RGB signal ratios in the transmission state of an electrochromic device and in colored states of the anodic electrochromic compounds, the RGB signal ratios are obtained from T.sub.A(λ) and the sensitivity of a photodetector, and T.sub.A(λ) is a normalized variable transmittance obtained by a combination of absorptions of the anodic electrochromic compounds.

A photographing module is provided, including a module housing, and a light sensing chip and a light capturing apparatus that are disposed in a cavity of the module housing, where a first light capturing hole and a second light capturing hole are provided on two opposite sides of the module housing, the light capturing apparatus is disposed opposite to each of the first light capturing hole and the second light capturing hole, in a first photographing state, ambient light passing through the second light capturing hole is projected onto the light sensing chip through the light capturing apparatus, and in a second photographing state, ambient light passing through the first light capturing hole is projected onto the light sensing chip through the light capturing apparatus.

A photographing module is provided, including a module housing, and a light sensing chip and a light capturing apparatus that are disposed in a cavity of the module housing, where a first light capturing hole and a second light capturing hole are provided on two opposite sides of the module housing, the light capturing apparatus is disposed opposite to each of the first light capturing hole and the second light capturing hole, in a first photographing state, ambient light passing through the second light capturing hole is projected onto the light sensing chip through the light capturing apparatus, and in a second photographing state, ambient light passing through the first light capturing hole is projected onto the light sensing chip through the light capturing apparatus.

The present invention relates to an electrochromic nanoparticle having a core-shell structure. The invention provides an electrochromic nanoparticle comprising: a core formed of a first electrochromic material; and a shell encompassing the core and formed of a second electrochromic material, wherein the first electrochromic material is formed of at least one type of transition metal oxide.

An electrochromic device according to the present disclosure includes an electrochromic element that includes a first electrode, a second electrode, and an electrochromic layer disposed between the first electrode and the second electrode. The electrochromic layer contains an anodic electrochromic compound and an oxidizable substance. The oxidizable substance is a substance which substantially does not undergo a color change due to oxidation and whose oxidant is not reduced. An oxidation reaction of the oxidizable substance is less likely to occur than an oxidation reaction of the anodic electrochromic compound. A controller is configured to control oxidation of the oxidizable substance based on a charge balance of the electrochromic element.

An electrochromic device according to the present disclosure includes an electrochromic element that includes a first electrode, a second electrode, and an electrochromic layer disposed between the first electrode and the second electrode. The electrochromic layer contains an anodic electrochromic compound and an oxidizable substance. The oxidizable substance is a substance which substantially does not undergo a color change due to oxidation and whose oxidant is not reduced. An oxidation reaction of the oxidizable substance is less likely to occur than an oxidation reaction of the anodic electrochromic compound. A controller is configured to control oxidation of the oxidizable substance based on a charge balance of the electrochromic element.

A system and method for color correction in an electrochromic device includes applying a stepped voltage profile to the electrochromic device in a high-transmission state to achieve a desired low-transmission state. Each step of the stepped voltage profile is at a step difference of about 0.01 volts to about 0.5 volts from an adjacent step with each successive step being at a varying voltage level and each of the steps is held for a time period from about 0.1 seconds to about 10 seconds. At the desired low-transmission state, the system and method include applying a reverse bias voltage from about 0.01 volts to about 0.5 volts for about 0.01 seconds to about 10 seconds to color correct the low-transmission state.