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Chiral smectic liquid crystal polarization interference filters 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G02F-001/133
출원번호 US-0884644 (1992-05-15)
발명자 / 주소
  • Johnson Kristina M. (Boulder CO) Sharp Gary D. (Boulder CO)
출원인 / 주소
  • The University of Colorado Foundation, Inc. (Boulder CO 02)
인용정보 피인용 횟수 : 76  인용 특허 : 0

초록 ▼

Discretely and continuously tunable single and multiple-stage polarization interference filters employing chiral smectic liquid crystal cells as electronically rotatable retarders are provided. Discretely tunable filters of this invention include those which employ bistable surface-stabilized ferroe

대표청구항 ▼

A tunable optical filter comprising one or more stages optically coupled in sequence wherein a stage comprises an entrance polarizer which defines the polarization of light entering the stage and an exit polarizer which is oriented at a fixed angle with respect to the entrance polarizer, wherein at

이 특허를 인용한 특허 (76)

  1. Anderson, Duncan J.; Shahzad, Khalid, Achromatic apparatus for producing a wavelength-independent high contrast light signal.
    상세보기
  2. Gary D. Sharp ; Kristina M. Johnson ; Michael G. Robinson ; Jianmin Chen, Achromatic polarization inverters for displaying inverse frames in DC balanced liquid crystal displays.
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  3. Xia, Tiejun; Cheng, Chi-Hao; Li, Shuxin; Liu, Jian-Yu; Wu, Kuang-Yi, Bandwidth variable wavelength router and method of operation.
    상세보기
  4. Miller, Peter, Birefringent filter using reflective polarizers and dichroic elements.
    상세보기
  5. Wen, Bing; Mahajan, Milind P.; Winker, Bruce K, Broad spectral range polarization rotator.
    상세보기
  6. Sharp Gary D., Chromaticity compensating liquid crystal filter.
    상세보기
  7. Johnson Kristina M. ; Sharp Gary D., Color controllable illumination device, indicator lights, transmissive windows and color filters employing retarder stacks.
    상세보기
  8. Sharp, Gary D., Color filters and sequencers using color selective light modulators.
    상세보기
  9. Sharp,Gary D., Color filters and sequencers using color-selective light modulators.
    상세보기
  10. Gary D. Sharp ; Kristina M. Johnson, Color filters, sequencers and displays using color selective light modulators.
    상세보기
  11. Sharp, Gary D.; Johnson, Kristina M., Color filters, sequencers and displays using color selective light modulators.
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  12. Johnson Kristina M. ; Sharp Gary D., Color imaging systems and methods.
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  13. Johnson, Kristina M.; Sharp, Gary D., Color imaging systems and methods.
    상세보기
  14. Sharp Gary D., Color selective light modulators employing birefringent stacks.
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  15. Zavracky Matthew ; Chern Wen-Foo ; Richard Alan ; Gale Ronald P. ; Salerno Jack P., Color sequential display panels.
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  17. Wong, Charles; Lin, Leo Yu-Yu; Liu, Jian-Yu, Compact wavelength filter using optical birefringence and reflective elements.
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  34. Brown Tyler Alan ; Weverka Robert Theodore ; Freeman Mark Olmsted,TWX, Liquid crystal optical frequency shifter.
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  36. Wu, Kuang-Yi; Liu, Jian-Yu, Method and apparatus for wavelength multiplexing/demultiplexing.
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  37. Yan,Lianshan; Yao,X. Steve; Shi,Yongqiang, Methods and systems for dynamic control of polarization of an optical signal.
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  38. McGuire, Jr., James P., Methods for reducing polarization aberration in optical systems.
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  45. Gary D. Sharp ; Kristina M. Johnson, Optical retarder stack formed of multiple retarder sheets.
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  46. Sharp Gary D. ; Johnson Kristina M., Optical retarder stack pair for transforming input light into polarization states having saturated color spectra.
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  47. Lin,Jibing; Tang,Suning; Tang,Yuanji; Aihara,Masami, Optical switching device using holographic polymer dispersed liquid crystals.
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  49. Gan Zhou ; Kuang-Yi Wu, Optical wavelength router based on polarization interferometer.
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  50. Sharp Gary D. ; Johnson Kristina M., Polarization manipulating device modulator with retarder stack which preconditions light for modulation and isotropic states.
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  51. Yao, Leon; Chen, Xiaojun, Polarization scrambling based on cascaded optical polarization devices having modulated optical retardation.
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  52. Sharp Gary ; Serati Steven A. ; Ewing Teresa Kaye, Polarizing interferometer using multiorder and zero order birefringence switches.
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  53. Cobb, Joshua M.; Silverstein, Barry D., Projection apparatus using telecentric optics.
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  58. Gilmour Sandra,GBX ; Tillin Martin David,GBX ; Towler Michael John,GBX, Reflective liquid crystal device with polarizing beam splitter.
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  59. Sharp Gary D. ; Johnson Kristina M., Retarder stack for preconditioning light for a modulator having modulation and isotropic states of polarization.
    상세보기
  60. Sharp Gary D., Retarder stacks for polarizing a first color spectrum along a first axis and a second color spectrum along a second axis.
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  61. Johnson, Kristina M.; Sharp, Gary D., Single-panel field-sequential color display systems.
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  62. Sharp Gary D. ; Johnson Kristina M., Spatially switched achromatic compound retarder.
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  63. Gottlieb Milton ; Denes Louis J., Spectro-polarimetric imager.
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  64. McGuire, Jr.,James P., Structures and methods for reducing polarization aberration in optical systems.
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  65. Sharp Gary D. ; Johnson Kristina M., Switchable achromatic compound retarder.
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  66. Sharp Gary D., Switchable achromatic polarization rotator.
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  67. Sharp Gary D., Switchable achromatic polarization rotator.
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  68. Sharp Gary D., Switchable achromatic polarization rotator.
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  69. Liu, Jian-Yu, Synchronous optical network in frequency domain.
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  70. Sharps, Robert W., System and method for measuring birefringence in an optical material.
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  71. Liu, Jian-Yu; Wu, Kuang-Yi, System for dealing with faults in an optical link.
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  72. Maguire, Stephen B., Tower configuration gravimetric blender.
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  73. Sharp Gary D., Transmissive optical polarizing filters designed to maximize a desired portion of a spectral output.
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  74. Wu Kuang-Yi, Tunable add/drop optical filter.
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  75. Terahara, Takafumi; Fukushima, Nobuhiro, Tunable optical filter.
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  76. Tillin Martin David,GBX ; Towler Michael John,GBX, Twisted liquid crystal surface mode device.
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