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Fast response liquid crystal material for liquid crystal wave-front corrector and preparation method thereof

A technology for wavefront correctors and liquid crystal materials, applied in liquid crystal materials, chemical instruments and methods, instruments, etc., can solve problems such as high Δn, unspecified composition and ratio of liquid crystal mixtures, and failure to satisfy liquid crystal wavefront correctors

Active Publication Date: 2012-07-25
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Wu S in the United States proposed that liquid crystal molecules containing diphenylacetylene and isothiocyanate groups can obtain high Δn and low viscosity, and gave some basic chemical structures of liquid crystal materials [Gauza S., Wen C., Wu B., Wu S. et al. Liquid Crystals, 2006, 33(6): 705-710; Wu S., Chai Z., US Patent, 6,838,017], but liquid crystal mixtures are not given in these papers and patents The composition and ratio of this material, and the response time of this material at 1λ, that is, the phase modulation amount of 785nm, is not mentioned. According to the parameter estimation published in the literature, this liquid crystal material is used for a reflective liquid crystal wavefront corrector, 1λ(λ =785nm) The response time under the phase modulation amount should be slightly greater than 3ms, which cannot meet the requirements of the liquid crystal wavefront corrector

Method used

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  • Fast response liquid crystal material for liquid crystal wave-front corrector and preparation method thereof
  • Fast response liquid crystal material for liquid crystal wave-front corrector and preparation method thereof
  • Fast response liquid crystal material for liquid crystal wave-front corrector and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the weight percentage of the mixture: (a) 5%, (b) 8%, (c) 7%, (d) 11%, (e) 33%, (f) 22%, (g) 7%, (h ) 7%, weighed 0.0500g from the synthesized (a) compound, weighed 0.0800g from the (b) compound, weighed 0.0700g from the (c) compound, and weighed 0.1100g from the (d) compound with an analytical balance. (e) weigh 0.3300 g of the compound, (f) weigh 0.2200 g of the compound, weigh 0.0700 g of the (g) compound, and weigh 0.0700 g of the (h) compound. Put the weighed eight compounds into a borosilicate glass reagent bottle with a volume of 5mL, add a polytetrafluoroethylene stirring bar with a length of 5mm, and cover the bottle cap with a polytetrafluoroethylene sealing inner gasket; place the reagent bottle in In a 60° C. water bath, electromagnetically stirred for 1 hour, all the solids were dissolved, and the target liquid crystal material was obtained, which is called liquid crystal S1.

[0021] Detect the physical characteristics of liquid crystal S1: ...

Embodiment 2

[0030] According to the weight percentage of the mixture: (a) 3%, (b) 7%, (c) 6%, (d) 11%, (e) 33%, (f) 22%, (g) 9%, (h ) 9%, weigh 0.0300g from the synthesized (a) compound, 0.0700g from the (b) compound, 0.0600g from the (c) compound, and 0.1100g from the (d) compound with an analytical balance. (e) weigh 0.2200 g of the compound, (f) weigh 0.3300 g of the compound, weigh 0.0900 g of the (g) compound, and weigh 0.0900 g of the (h) compound. Put the weighed eight compounds into a borosilicate glass reagent bottle with a volume of 5mL, add a polytetrafluoroethylene stirring bar with a length of 5mm, and cover the bottle cap with a polytetrafluoroethylene sealing inner gasket; place the reagent bottle in In a 60° C. water bath, electromagnetically stirred for 1 hour, all the solids were dissolved, and the target liquid crystal material was obtained, which is called liquid crystal S2.

[0031] Detect the physical characteristics of liquid crystal S2:

[0032] (1) Nematic phase...

Embodiment 3

[0039] According to the weight percentage of the mixture: (a) 6%, (b) 8%, (c) 7%, (d) 12%, (e) 34%, (f) 23%, (g) 5%, (h ) 5%, use an analytical balance to weigh 0.0600g from the synthesized (a) compound, 0.0800g from the (b) compound, 0.0700g from the (c) compound, and 0.1200g from the (d) compound, (e) weigh 0.3400 g of the compound, (f) weigh 0.2300 g of the compound, weigh 0.0500 g of the (g) compound, and weigh 0.0500 g of the (h) compound. Put the weighed eight compounds into a borosilicate glass reagent bottle with a volume of 5mL, add a polytetrafluoroethylene stirring bar with a length of 5mm, and cover the bottle cap with a polytetrafluoroethylene sealing inner gasket; place the reagent bottle in In a 60° C. water bath, electromagnetically stirred for 1 hour, all the solids were dissolved, and the target liquid crystal material was obtained, which is called liquid crystal S3.

[0040] Detect the physical characteristics of liquid crystal S3:

[0041] (1) Nematic pha...

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Abstract

The invention belongs to the field of liquid crystal material preparation and relates to a fast response liquid crystal material for a liquid crystal wave-front corrector and a preparation method. The preparation method is characterized in that eight compounds such as alkyl biphenyl isothiocyanate, alkyl triple phenyl isothiocyanate, alkyl diphenyl acetylenyl isothiocyanate and alkyl phenyl diphenyl acetylenyl isothiocyanate are mixed in percentage by weight, and the mixture is heated and uniformly blended to obtain a wide-temperature nematic liquid crystal with a delta n value of 0.30-0.45 and low viscosity; the obtained liquid crystal material is manufactured into a reflection-type parallel arrangement liquid crystal box which is equivalent to a single pixel liquid crystal wave-front corrector; the thickness of a liquid crystal layer is controlled to be 1.6mum-2.0mum; the modulated quantity of a phase is ensured to be greater than one 785nm-wavelength; and the response time of the modulated quantity of a wavelength phase is 2.4ms-2.5ms under the driving of a 5V-voltage.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal material preparation, relates to a liquid crystal material in a liquid crystal wavefront corrector, and is a fast-response liquid crystal material and a preparation method thereof, specifically a fast-response liquid crystal material and a preparation method for a liquid crystal wavefront corrector . Background technique [0002] The function of the optical wavefront adaptive correction system is to compensate and correct the distorted wavefront of the incident light in real time to obtain ideal optical imaging. [0003] The liquid crystal wavefront corrector based on nematic liquid crystal material adopts mature microelectronics technology and has the characteristics of high pixel density. It not only has high correction accuracy, but also can use kinoform technology to correct the wavefront. The absolute phase modulation amount of the wavelength of the modulated light) can correct the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/44G02F1/1333
Inventor 宣丽彭增辉刘永刚姚丽双胡立发曹召良穆全全李大禹夏明亮杨程亮鲁兴海
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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