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1. 发明授权

US5812233A Polarization sensitive devices and methods of manufacture thereof 失效
标题翻译：极化敏感器件及其制造方法
公开(公告)号：US5812233A
公开(公告)日：1998-09-22
申请号：US525297
申请日：1995-09-07
申请人： Kathryn Walsh , Gillian Margaret Davis , Paul May
发明人： Kathryn Walsh , Gillian Margaret Davis , Paul May
IPC分类号： G02B5/30 , G02B27/28 , G02F1/13 , G02F1/1333 , G02B5/32
CPC分类号： G02B5/3083 , G02B27/283 , G02B27/288
摘要： A film of photosensitive material is illuminated from first and second sides with coherent polarized light so as to form an interference pattern within the film. Regions of cyclicly varying refractive index are provided in the film in accordance with the intensity of the interference patten, thereby forming an polarization sensitive refractive index grating. The refractive index grating may be used as a polarization and wavelength dependent mirror, patterned polarizer, beamsplitter or filter.
摘要翻译：由相干偏振光从第一和第二侧照射感光材料的薄膜，以在薄膜内形成干涉图案。根据干涉图案的强度，在膜中提供循环变化的折射率区域，从而形成偏振敏感折射率光栅。折射率光栅可以用作偏振和波长相关镜，图案化偏振器，分束器或滤光器。

2. 发明授权

US5828471A Illumination system and display device 失效
标题翻译：照明系统和显示设备
公开(公告)号：US5828471A
公开(公告)日：1998-10-27
申请号：US579563
申请日：1995-12-27
申请人： Gillian Margaret Davis , Kathryn Walsh , Paul May
发明人： Gillian Margaret Davis , Kathryn Walsh , Paul May
IPC分类号： G02F1/1335 , G02B27/28 , G02F1/13357 , G02F1/13363 , G02B5/32 , G02B5/30 , G03H1/00
CPC分类号： G02F1/13362 , G02F1/133536 , G02F1/13363 , G02F2413/09
摘要： An illumination system includes a polarization selective holographic element, which includes at least one optically anisotropic material, arranged to separate light of a first polarization type from light of a second polarization type, and converting section for converting light of at least one of the first and second polarization types to light of a common polarization type. Where the polarization selective holographic element separates two orthogonal components of plane polarized light from one another, the converting section can include a polarization rotator, for example a half wave plate, or alternatively a quarter wave plate and a reflector arranged to reflect light back through the quarter wave plate. Where the polarization selective holographic element separates opposite handed components of circularly polarized light, the converting section can include a reflector.
摘要翻译：一种照明系统包括偏振选择性全息元件，其包括至少一种光学各向异性材料，其布置成将第一偏振光的光与第二偏振光分离;以及转换部分，用于转换第一和第二偏振光中的至少一个的光，第二极化类型与普通偏振型光。在偏振选择性全息元件将平面偏振光的两个正交分量彼此分离的情况下，转换部分可以包括偏振旋转器，例如半波片，或者替代地，四分之一波片和反射器被布置成将光反射回四分之一波片。在偏振选择性全息元件分离圆偏振光的相反手部分量的情况下，转换部分可以包括反射器。

3. 发明授权

US5671034A Polarisation dependent refractive device exhibiting independtly varying first and second indices of refraction and methods of manufacture thereof 失效
$Polarisation dependent refractive device exhibiting independtly varying first and second indices of refraction and methods of manufacture thereof$
标题翻译：具有独立变化的第一和第二折射率的偏振相关折射装置及其制造方法
公开(公告)号：US5671034A
公开(公告)日：1997-09-23
申请号：US525917
申请日：1995-09-07
申请人： Paul May , Kathryn Walsh , Gillian Margaret Davis
发明人： Paul May , Kathryn Walsh , Gillian Margaret Davis
IPC分类号： G02B3/00 , G02B5/30 , G02F1/03 , G02F1/13 , G02F1/13363 , G02F1/137
CPC分类号： G02F1/13363 , G02B3/0087 , G02B5/3083 , G02F2413/01 , G02F2413/09
摘要： A birefringent element is patterned such that for light of a first polarisation the element acts as a first refractive optical element and for light of a second polarisation the optical response of the element changes. The element can be used in conjunction with a polarisation selecting means, such as a liquid crystal device, to provide an electrically controllable optical element that can be used in light beam manipulation applications.
摘要翻译：双折射元件被图案化，使得对于第一偏振光，元件用作第一折射光学元件，并且对于第二偏振光，元件的光学响应改变。该元件可以与诸如液晶装置的偏振选择装置结合使用，以提供可用于光束操纵应用的电可控光学元件。

4. 发明授权

US06339464B1 Filter and method of making an optical device 失效
公开(公告)号：US06339464B1
公开(公告)日：2002-01-15
申请号：US09014957
申请日：1998-01-28
申请人： Duncan James Anderson , Claire Blay , Robert George Watling Brown , Gillian Margaret Davis , Nathan Smith , Kathryn Walsh
发明人： Duncan James Anderson , Claire Blay , Robert George Watling Brown , Gillian Margaret Davis , Nathan Smith , Kathryn Walsh
IPC分类号： G02F113
CPC分类号： G02B5/3016
摘要： A cholesteric film is formed into an optical device comprising a plurality of layers. The cholesteric film is initially placed in a first predetermined state, for instance heating to a first predetermined temperature, and is then irradiated with narrow band UV radiation. The properties of an upper layer of the film are fixed, for instance for reflecting normally incident infrared radiation of a particular handedness. This process is repeated for different wavelengths of UV fixing radiation so as to penetrate to different depths from the surface of the film in order to form the layers. This method may be used to produce a filter of reduced sensitivity to angle of incidence. In addition to the infrared reflecting layer, red and green reflecting layers are provided. For normally incident radiation, the red and green layers reflect red and green parts R and G, whereas the blue part B of the spectrum is transmitted. For off-axis illumination or viewing, the red part R is reflected by the infrared layer and the green part G is reflected by the red layer. The birefringence of the infrared layer and the red layer reverses the direction of circular polarisation of the blue part B, which thus passes through the green layer.

5. 发明授权

US06175400B1 Broadband cholesteric optical device having a broadband cholesteric layer, a positive C-plate and a negative C-plate 失效
标题翻译：具有宽带胆固醇层，正C板和负C板的宽带胆甾型光学器件
公开(公告)号：US06175400B1
公开(公告)日：2001-01-16
申请号：US09012469
申请日：1998-01-22
申请人： Anderson James Duncan , Robert George Brown , Gillian Margaret Davis , Kathryn Walsh
发明人： Anderson James Duncan , Robert George Brown , Gillian Margaret Davis , Kathryn Walsh
IPC分类号： G02F11335
CPC分类号： G02F1/13362 , G02B5/3016 , G02F1/133536 , G02F1/133634 , G02F2001/133543
摘要： A broadband cholesteric optical device such as a polarizer or a spectral filter includes a broadband cholesteric layer, for instance, of a graded pitch type such that the cholesteric pitch increases monotonically from one surface of the film to the other surface. In order to improve the off-axis performance, a compensator is provided in the form of a positive birefringence film whose optic axis is substantially perpendicular to the film. Another negative birefringence film whose optic axis is also perpendicular to the film may also be provided.
摘要翻译：诸如偏振器或光谱滤波器之类的宽带胆甾醇型光学器件包括例如渐变色调类型的宽带胆甾型层，使得胆甾醇沥青从膜的一个表面到另一个表面单调增加。为了提高离轴性能，以正双折射膜的形式提供补偿器，该正双折射膜的光轴基本垂直于膜。还可以提供其光轴也垂直于膜的另一负双折射膜。

6. 发明授权

US6061108A Broadband cholesteric polarizer and an optical device employing the same 失效
标题翻译：宽带胆甾型偏振器和采用该方法的光学装置
公开(公告)号：US6061108A
公开(公告)日：2000-05-09
申请号：US10442
申请日：1998-01-22
申请人： Duncan James Anderson , Gillian Margaret Davis , Kathryn Walsh , Robert George Watling Brown , Masayuki Nakazawa
发明人： Duncan James Anderson , Gillian Margaret Davis , Kathryn Walsh , Robert George Watling Brown , Masayuki Nakazawa
IPC分类号： G02B5/30 , G02F1/1335 , G02F1/13357 , G02F1/13363
CPC分类号： G02F1/13362 , G02B5/3016 , G02F1/133536 , G02F1/133634 , G02F2001/133543
摘要： A broadband cholesteric polariser includes at least one pair of adjacent layers. The at least one pair includes a cholesteric layer and a compensating layer. The compensating layer has a refractive index perpendicular to the compensating layer greater than a refractive index oriented within the compensating layer.
摘要翻译：宽带胆甾型偏振器包括至少一对相邻层。所述至少一对包括胆甾醇层和补偿层。补偿层具有垂直于补偿层的折射率大于在补偿层内定向的折射率。

7. 发明授权

US5822029A Illumination system and display device 失效
标题翻译：照明系统和显示设备
公开(公告)号：US5822029A
公开(公告)日：1998-10-13
申请号：US581380
申请日：1995-12-29
申请人： Gillian Margaret Davis , Kathryn Walsh
发明人： Gillian Margaret Davis , Kathryn Walsh
IPC分类号： G02B5/20 , G02B5/30 , G02B5/32 , G02B27/28 , G02F1/1335 , G02F1/13357
CPC分类号： G02F1/13362 , G02B5/3016 , G02F1/133621 , G02F1/133536 , G02F2001/133543
摘要： An illumination system includes a polarized light source which emits circularly polarized light of a particular handedness and a cholesteric filter having a region arranged to transmit circularly polarized light falling within a first wavelength band and to reflect other wavelengths of circularly polarized light. A reflector redirects the reflected light back towards the cholesteric filter. The cholesteric filter can include a first layer having portions which reflect red, green and blue light while transmitting other colors, and a second layer identical to the first layer but out of alignment therewith so that each region of the filter transmits only one color of light, the other colors being reflected.
摘要翻译：一种照明系统包括发射特定旋律性的圆偏振光的偏振光源和具有布置成透射落在第一波长带内的圆偏振光并且反射圆偏振光的其它波长的区域的胆甾醇型滤光器。反射器将反射光线重定向回到胆甾型滤光器。胆甾型滤光器可以包括具有反射红色，绿色和蓝色光同时透射其他颜色的部分的第一层，以及与第一层相同但不与其对准的第二层，使得滤光器的每个区域仅透射一种颜色的光其他颜色被反映出来。

8. 发明授权

US06624872B2 Optical radiation filter 失效
标题翻译：光辐射过滤器
公开(公告)号：US06624872B2
公开(公告)日：2003-09-23
申请号：US09969276
申请日：2001-10-02
申请人： Duncan James Anderson , Claire Blay , Robert George Watling Brown , Gillian Margaret Davis , Nathan Smith , Kathryn Walsh
发明人： Duncan James Anderson , Claire Blay , Robert George Watling Brown , Gillian Margaret Davis , Nathan Smith , Kathryn Walsh
IPC分类号： G02F113
CPC分类号： G02B5/3016
摘要： A cholesteric film is formed into an optical device comprising a plurality of layers. The cholesteric film is initially placed in a first predetermined state, for instance heating to a first predetermined temperature, and is then irradiated with narrow band UV radiation. The properties of an upper layer of the film are fixed, for instance for reflecting normally incident infrared radiation of a particular handedness. This process is repeated for different wavelengths of UV fixing radiation so as to penetrate to different depths from the surface of the film in order to form the layers. This method may be used to produce a filter of reduced sensitivity to angle of incidence. In addition to the infrared reflecting layer, red and green reflecting layers are provided. For normally incident radiation, the red and green layers reflect red and green parts R and G, whereas the blue part B of the spectrum is transmitted. For off-axis illumination or viewing, the red part R is reflected by the infrared layer and the green part G is reflected by the red layer. The birefringence of the infrared layer and the red layer reverses the direction of circular polarisation of the blue part B, which thus passes through the green layer.
摘要翻译：胆甾型薄膜形成为包括多层的光学装置。胆甾醇膜最初放置在第一预定状态，例如加热到第一预定温度，然后用窄带UV辐射照射。膜的上层的性质是固定的，例如用于反射具有特定手感度的正常入射的红外辐射。对于不同波长的UV固定辐射重复该过程，以便从膜的表面渗透到不同的深度以形成层。该方法可以用于产生对入射角降低的灵敏度的滤光器。除了红外线反射层之外，还设置红色和绿色反射层。对于正常入射的辐射，红色和绿色层反射红色和绿色部分R和G，而光谱的蓝色部分B被透射。对于离轴照明或观察，红色部分R被红外层反射，绿色部分G被红色层反射。红外层和红色层的双折射反转蓝色部分B的圆偏振方向，从而穿过绿色层。

9. 发明授权

US5640267A Optical apparatus 失效
标题翻译：光学仪器
公开(公告)号：US5640267A
公开(公告)日：1997-06-17
申请号：US396633
申请日：1995-03-01
申请人： Paul May , Gillian Margaret Davis
发明人： Paul May , Gillian Margaret Davis
IPC分类号： G02F1/035 , G02F1/1337 , G02F1/135 , G02F1/225 , G02F1/29 , G02F1/313 , G02F1/355 , G02F1/00
CPC分类号： G02F1/1337 , G02F1/0356 , G02F1/1358 , G02F1/225 , G02F1/292 , G02F1/3558
摘要： An electro-optic material has first and second regions formed therein. The optic axes of the first and second regions are antiparallel and define a domain inversion pattern. The difference in refractive index between the first and second regions is a function of an electric field applied thereto. The difference in refractive index enables spatial light phase modulators and refractive optical devices having electrical control to be formed.
摘要翻译：电光材料在其中形成有第一和第二区域。第一和第二区域的光轴是反平行的并且限定了域反转图案。第一和第二区域之间的折射率差异是施加到其上的电场的函数。折射率的差异使得能够形成具有电控制的空间光相位调制器和折射光学装置。

10. 发明授权

US06356674B1 Electrically controllable grating, and optical elements having an electrically controllable grating 失效
标题翻译：电可控光栅和具有电可控光栅的光学元件
公开(公告)号：US06356674B1
公开(公告)日：2002-03-12
申请号：US08375596
申请日：1995-01-20
申请人： Gillian Margaret Davis , Robert George Watling Brown , Paul May
发明人： Gillian Margaret Davis , Robert George Watling Brown , Paul May
IPC分类号： G02B518
CPC分类号： G02F1/292 , G02F1/035 , G02F1/3558
摘要： An electrically controllable grating is provided by forming regions 4 and 5 of different refractive index within an electro-optic material. Electrodes are provided so that a readily controllable electric field may be applied to the index grating formed by the alternating regions such that the refractive index of the regions may be varied electrically to form a controllable grating. The grating may be used as an electrically controllable distributed Bragg reflector to allow variable wavelength feedback within a laser cavity. The grating may be used to perform wavelength division multiplexing and/or frequency modulation.
摘要翻译：通过在电光材料内形成不同折射率的区域4和5来提供电可控光栅。提供电极，使得可以将易于控制的电场施加到由交替区域形成的折射率光栅，使得区域的折射率可以电气变化以形成可控光栅。光栅可以用作电可控分布布拉格反射器，以允许激光腔内的可变波长反馈。光栅可用于执行波分复用和/或频率调制。

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