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Waveband tunable infrared reflector and production method thereof

A technology of infrared reflection and wavelength band, which is applied in the directions of instruments, optics, nonlinear optics, etc., and can solve problems such as inability to achieve intelligent control

Active Publication Date: 2017-05-10
SHENZHEN GUOHUA OPTOELECTRONICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As the climate changes, people's needs are constantly changing, while traditional mechanical insulation and refrigeration methods, such as shutters and air-conditioning equipment, cannot achieve intelligent regulation as people's needs and climate change

Method used

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  • Waveband tunable infrared reflector and production method thereof
  • Waveband tunable infrared reflector and production method thereof
  • Waveband tunable infrared reflector and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to figure 1 , figure 1 It is a schematic cross-sectional view of a band-tunable infrared reflective device. The present invention provides a first light-transmitting substrate 1, a second light-transmitting substrate 2, and a power supply assembly 3 that are oppositely arranged. It is characterized in that the first light-transmitting The optical substrate 1 is electrically connected to the positive pole of the power supply component 3, the second transparent substrate 2 is electrically connected to the negative pole of the power supply component 3, the first transparent substrate 1 and the second transparent substrate The substrates 2 are encapsulated by the packaging plastic frame 6 to form an adjustment area 4, the adjustment area 4 is filled with a liquid crystal mixture, and the adjustment area 4 is also provided with a spacer 5 for supporting the thickness of the infrared reflection device. The height of the spacer 5 is equal to the thickness of the regulat...

Embodiment 2

[0034] This embodiment is basically the same as Embodiment 1, except that the photopolymerizable monomer is RM257, and its structural formula is The negative liquid crystal is BL109, its dielectric constant Δε=-6~-14, birefringence Δn=0.1~0.15, the chiral dopant is S1011, its structural formula is Described photoinitiator is Irgacure-369, and its structural formula is

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Abstract

The invention discloses a waveband tunable infrared reflector and a production method thereof. The method mixes a chiral dopant, photopolymerizable liquid crystal monomers, a photoinitiator and negative liquid crystal and obtains a liquid crystal mixture. Two transparent substrates are filled with the liquid crystal mixture, and voltage can be introduced into the two transparent substrates. The photoinitiator initiates polymerization of the photopolymerizable liquid crystal monomers into a polymer network under the effect of ultraviolet light. The chiral dopant drives the negative liquid crystal to form cholesteric liquid crystal of a helical structure. The cholesteric liquid crystal has a unique pitch, and a specific pitch structure reflects a waveband of infrared light of a specific wavelength. The polymer network can capture impurity cations. When the transparent substrates are electrified, the impurity cations move towards the transparent substrates electrically connected with a power supply negative electrode. The polymer network drives the cholesteric liquid crystal to move, so that the pitch of the cholesteric liquid crystal changes and the infrared reflection bandwidth becomes wider.

Description

technical field [0001] The invention relates to an infrared reflective device, in particular to an infrared reflective device with tunable band and a preparation method thereof. Background technique [0002] Modern architecture has created an indoor environment for human beings to work, study, and live. The comfort of the indoor environment is closely related to people's life and health. Buildings and automobiles widely use refrigeration or heating devices to maintain the comfort of the environment. At the same time, the harm caused by harmful gas emissions to humans and the environment is immeasurable. As the climate changes, people's needs are constantly changing, while traditional mechanical insulation and refrigeration methods, such as shutters and air-conditioning equipment, cannot achieve intelligent regulation with changes in people's needs and climate. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1334G02F1/137
CPCG02F1/1334G02F1/13718G02F1/13345
Inventor 胡小文李娜鞠纯王璐李琛周国富
Owner SHENZHEN GUOHUA OPTOELECTRONICS
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