摘要:
An electronically controllable eyewear device having a cell filled with a liquid crystal material that can be electronically operated in an auto or a manual mode. The device contains a photosensor for generating a light input signal to trigger an automatic application of voltage to the cell when the device is in an auto mode, one or more switches capable of being actuated in a series of actuation sequences each to select a distinct function, and a control circuit responsive to each actuation sequence and light input signal to operate the cell in a corresponding one of a plurality of functions, including: (i) a first sequence for affecting an ON/OFF function, (ii) a second sequence for affecting a system change from the manual mode to the auto mode, and (iii) a third sequence for changing the threshold value for triggering the automatic application of voltage.
摘要:
We describe a wide band variable transmission optical device having an electronically active cell comprising a guest-host mixture of a liquid crystal host and a dichroic guest dye material contained between a pair of plastic substrates. The liquid crystal host has an axis orientation that is alterable between a clear state orientation and a dark state orientation and the dichroic guest dye material includes one or more dichroic dyes. The optical device is characterized in that it exhibits a wide absorption band that is greater than 175 nm within a visible wavelength range of 400-700 nm, has a clear state transmission equal to or above 30% and a dark state transmission equal to or below 40%.
摘要:
Provided is a liquid crystal light variable device having a liquid crystal cell, comprising a mixture of a liquid crystal material and one or more dichroic dyes interposed between a first and a second substrate, each substrate having a conductive layer disposed thereon. The device further includes a voltage supply or controller coupled with the conductive layers for application of a voltage waveform across the liquid crystal cell. The liquid crystal cell is configured so that based on the voltage waveform applied, the device transitions between a low-haze low-tint state (“clear state”), a low-haze high-tint state (“tinted state”), and a high-haze high-tint state (“opaque state”). The high-haze state is caused by dynamic scattering in the liquid crystal-dye mixture.
摘要:
A non-polarizer based variable light attenuating device includes a guest-host solution having a liquid crystal host and a guest dichroic dye disposed between first and second conducting layers provided on first and second transparent substrates. The guest-host solution has a low-haze while the guest dye orientation alters between a low light transmitting orientation and a high light transmitting orientation in response to a first voltage supplied to the first and second conducting layers. In response to a second voltage supplied to the first and second conducting layers, the guest-host solution changes to a focal conic light scattering orientation to achieve a high-haze translucent state.
摘要:
A naphthopyran compound represented by the formula B1 and B2 are selected independently from the group consisting of a phenyl, naphthyl, or heterocyclic aromatic group, or may combine to form one or more aromatic rings. B1 and B2 may further include one or more substituents. R3, R4, R5, R6, and R16 are selected independently from the group consisting of hydrogen, halogen, —Ra, —OH, —ORa, —O—CO—Ra, —CN, —NO2, —SO2Ra, —SORa, —SH, —SRa, —NH2, —NHRa, —NRaRa, or —NRbRc; or wherein R5 and R6 combine to form a cyclic group. Ra may include an alkyl, polycycloalkyl, alkenyl, polyalkenyl, haloalkyl, perhaloalkyl, alkynyl, polyalkynyl, hydroxyalkynyl, polyhydroxyalkynyl; or (C3-20)cycloalkyl group. Rb and Rc may include hydrogen or alkyl groups, or may combine to form a saturated heterocyclic group, or together with an adjacent phenyl group may form a julolidinyl group. R7 is a mesogenic group. And the naphthopyran, which may be referred to as a dichroic-photochromic compound, may be incorporated into an optical article.
摘要翻译:由式B1和B2表示的萘并吡喃化合物独立地选自苯基,萘基或杂环芳族基团,或者可以结合形成一个或多个芳环。 B1和B2可进一步包括一个或多个取代基。 R3,R4,R5,R6和R16独立地选自氢,卤素,-Ra,-OH,-ORa,-O-CO-Ra,-CN,-NO2,-SO2Ra,-SORa, -SH,-SR a,-NH 2,-NHR a,-NR a R a或-NR b R c; 或其中R 5和R 6结合形成环状基团。 R a可以包括烷基,多环烷基,烯基,聚烯基,卤代烷基,全卤代烷基,炔基,聚炔基,羟基炔基,聚羟基炔基; 或(C 3-20)环烷基。 Rb和Rc可以包括氢或烷基,或者可以结合形成饱和杂环基,或者与相邻的苯基一起可以形成高碘基。 R7是介晶组。 并且可以将称为二色性 - 光致变色化合物的萘并吡喃掺入到光学制品中。
摘要:
A light emitting photonic bandgap (PBG) material, and devices uses the same, having (a) a polymer network exhibiting a non-uniform pitch; (b) a small molecule liquid crystal material with a birefringence >0.04; and (c) one or more light emitting dyes having a low triplet state absorption. The light emitting PBG material has a defect-induced density of states enhancing feature at a wavelength that overlaps the emission spectrum of the light emitting dye. Excitation of the light emitting PBG material by a light source causes a directional electromagnetic emission from the light emitting material. The PBG material, and device, are capable of emitting continuous wave laser light as a result of excitation by a low-power incoherent light source.
摘要:
A light emitting photonic bandgap (PBG) material, and devices uses the same, having (a) a polymer network exhibiting a non-uniform pitch; (b) a small molecule liquid crystal material with a birefringence>0.04; and (c) one or more light emitting dyes having a low triplet state absorption. The light emitting PBG material has a defect-induced density of states enhancing feature at a wavelength that overlaps the emission spectrum of the light emitting dye. Excitation of the light emitting PBG material by a light source causes a directional electromagnetic emission from the light emitting material. The PBG material, and device, are capable of emitting continuous wave laser light as a result of excitation by a low-power incoherent light source.
摘要:
We describe a wide band variable transmission optical device having an electronically active cell comprising a guest-host mixture of a liquid crystal host and a dichroic guest dye material contained between a pair of plastic substrates. The liquid crystal host has an axis orientation that is alterable between a clear state orientation and a dark state orientation and the dichroic guest dye material includes one or more dichroic dyes. The optical device is characterized in that it exhibits a wide absorption band that is greater than 175 nm within a visible wavelength range of 400-700 nm, has a clear state transmission equal to or above 30% and a dark state transmission equal to or below 40%.
摘要:
A non-polarizer based variable light attenuating device includes a guest-host solution having a liquid crystal host and a guest dichroic dye disposed between first and second conducting layers provided on first and second transparent substrates. The guest-host solution has a low-haze while the guest dye orientation alters between a low light transmitting orientation and a high light transmitting orientation in response to a first voltage supplied to the first and second conducting layers. In response to a second voltage supplied to the first and second conducting layers, the guest-host solution changes to a focal conic light scattering orientation to achieve a high-haze translucent state.
摘要:
A naphthopyran compound represented by the formula B1 and B2 are selected independently from the group consisting of a phenyl, naphthyl, or heterocyclic aromatic group, or may combine to form one or more aromatic rings. B1 and B2 may further include one or more substituents. R3, R4, R5, R6, and R10 are selected independently from the group consisting of hydrogen, halogen, —Ra, —OH, —ORa, —O—CO—Ra, —CN, —NO2, —SO2Ra, —SORa, —SH, —SRa, —NH2, —NHRa, —NRaRa, or —NRbRc; or wherein R5 and R6 combine to form a cyclic group. Ra may include an alkyl, polycycloalkyl, alkenyl, polyalkenyl, haloalkyl, perhaloalkyl, alkynyl, polyalkynyl, hydroxyalkynyl, polyhydroxyalkynyl; or (C3-20)cycloalkyl group. Rb and Rc may include hydrogen or alkyl groups, or may combine to form a saturated heterocyclic group, or together with an adjacent phenyl group may form a julolidinyl group. R7 is a mesogenic group. And the naphthopyran, which may be referred to as a dichroic-photochromic compound, may be incorporated into an optical article.
摘要翻译:由式B1和B2表示的萘并吡喃化合物独立地选自苯基,萘基或杂环芳族基团,或者可以结合形成一个或多个芳环。 B1和B2可进一步包括一个或多个取代基。 R3,R4,R5,R6和R10独立地选自氢,卤素,-Ra,-OH,-ORa,-O-CO-Ra,-CN,-NO2,-SO2Ra,-SORa, -SH,-SR a,-NH 2,-NHR a,-NR a R a或-NR b R c; 或其中R 5和R 6结合形成环状基团。 R a可以包括烷基,多环烷基,烯基,聚烯基,卤代烷基,全卤代烷基,炔基,聚炔基,羟基炔基,聚羟基炔基; 或(C 3-20)环烷基。 Rb和Rc可以包括氢或烷基,或者可以结合形成饱和杂环基,或者与相邻的苯基一起可以形成高碘基。 R7是介晶组。 并且可以将称为二色性 - 光致变色化合物的萘并吡喃掺入到光学制品中。