公开(公告)号：WO2020234278A1

公开(公告)日：2020-11-26

申请号：PCT/EP2020/063919

申请日：2020-05-19

Applicant: IMEC VZW ,  STICHTING IMEC NEDERLAND ,  UNIVERSITEIT GENT

Inventor： VAN LIEMPD, Chris ,  VASQUEZ QUINTERO, Andres Felipe ,  DE SMET, Herbert

IPC: G02C7/04 ,  G01J1/44 ,  G01J1/42 ,  G02C11/00

Abstract: A smart contact lens (400) for detecting a ratiometric change in an incident light (126) intensity is provided, including one or more, preferably concentric, rings (410-1, 410-2, …, 410-N) of a liquid crystal display, LCD, type, each ring being operable between a state having a lower attenuation of light and a state having a higher attenuation of light; a circuit (420, 100, 101) for detecting a ratiometric change in an incident light intensity; and a controller (430) configured to operate the one or more rings based on an intensity of an incident light and to, as a response to the circuit (420, 100, 10 101) detecting a ratiometric change in the intensity of the incident light from a higher intensity state to a lower intensity state indicating that at least a beginning of a blinking of an eye of a user has occurred, initiate a re-polarization of the one or more rings. A method of operating the smart contact lens and various uses of the circuit are also provided.

公开(公告)号：WO2022189426A1

公开(公告)日：2022-09-15

申请号：PCT/EP2022/055880

申请日：2022-03-08

Applicant: IMEC VZW ,  UNIVERSITEIT GENT

Inventor： VERPLANCKE, Rik ,  DE SMET, Herbert

IPC: G02F1/29 ,  G02F1/1339 ,  G02C7/08

Abstract: An electro-optical component (100) for adaptive visual correction comprises a first transparent substrate (102a); a second transparent substrate (102b); an optical structure (106) disposed on said first transparent substrate (102a); a liquid-crystal gap (108) located between said optical structure (106) and said second transparent substrate (102b); a first transparent electrode (104a) and a second transparent electrode (104b), located on opposite sides of said liquid-crystal gap (108); and a plurality of spacers (112, 112a, 112b, 112c, 312b) located in said liquid-crystal gap (108) between said second transparent substrate (102b) and said optical structure (106), wherein said plurality of spacers (112, 112a, 112b, 112c, 312b) comprises at least one spacer having a different height than another spacer of said plurality of spacers.

公开(公告)号：WO2015001120A1

公开(公告)日：2015-01-08

申请号：PCT/EP2014/064390

申请日：2014-07-05

Applicant: UNIVERSITEIT GENT ,  IMEC VZW

Inventor： DE SMET, Herbert ,  DE SMET, Jelle

IPC: G02C7/04 ,  A61F2/16 ,  G02B3/10 ,  G02C7/10

CPC classification number: G02C7/022 ,  A61F2/1618 ,  A61F2/1624 ,  A61F2250/0053 ,  G02B3/0081 ,  G02B3/0087 ,  G02B3/10 ,  G02C7/04 ,  G02C7/042 ,  G02C7/045 ,  G02C7/101 ,  G02F1/17

Abstract: The present invention relates to an optical lens device (1) having an actively controllable focal length. This device comprises an element with lensing effect (2) comprising a plurality of regions (3a,3b). Each such region has a corresponding refractive power for providing a corresponding focal length distinct from the focal length of at least one other region of this plurality of regions. The device further comprises at least one non-centric addressable optical element (4) integrated in or provided on the element with lensing effect (2). This at least one addressable optical element (4) is adapted for changing the transmittance of at least one of the plurality of regions in response to a control signal. The device also comprises a control means (5) for generating the control signal.

Abstract translation: 本发明涉及具有主动控制的焦距的光学透镜装置（1）。 该装置包括具有多个区域（3a，3b）的具有透镜效应（2）的元件。 每个这样的区域具有相应的屈光力，用于提供与该多个区域中的至少一个其它区域的焦距不同的对应焦距。 该装置还包括集成在元件中或设置在元件上的透镜效应（2）的至少一个非中心可寻址光学元件（4）。 该至少一个可寻址光学元件（4）适于响应于控制信号改变多个区域中的至少一个的透射率。 该装置还包括用于产生控制信号的控制装置（5）。

公开(公告)号：WO2010122018A1

公开(公告)日：2010-10-28

申请号：PCT/EP2010/055190

申请日：2010-04-20

Applicant: IMEC ,  UNIVERSITEIT GENT ,  DE SMET, Herbert ,  BEERNAERT, Roel

Inventor： DE SMET, Herbert ,  BEERNAERT, Roel

IPC: G09G3/34

CPC classification number: G09G3/346 ,  G09G3/2014 ,  G09G3/2022 ,  G09G2300/0426 ,  G09G2310/06 ,  G09G2310/066

Abstract: The present invention is related to a method for operating by pulse width modulation a micromirror device (50) comprising the steps of: - providing a micromirror device comprising at least one micromirror element (10) being electrostatically deflectable around a rotation axis (30) between at least two positions being a first position and a second position, by applying voltage signals to at least four electrodes (21, 22, 23, 24) controlling said micromirror element, the first and second electrodes (21, 22) being located on one side of the rotation axis, and the third and fourth electrodes (23, 24) on the other side; - associating an intermediate value of intensity to said micromirror (10) element during a time frame, said intensity being comprised between a first value and a second value, said first value corresponding to said first position and said second value corresponding to said second position; - switching the micromirror element (10) between the first position and the second position and vice-versa so that the micromirror element (10) is either in the first position or in the second position whereby the intermediate value of intensity between said first value and said second value is obtained, said intermediate value of intensity corresponding to the ratio of the periods of time in a time frame in which the micromirror element is either in the first position or in the second position; characterised in that said switching is obtained by applying fixed voltage signals to the second and third electrodes (22, 23) during the time frame and said fixed voltage signals being kept constant during half of the time frame, and periodic voltage signals having a period equal to the length of the time frame to the first and fourth electrodes (21, 24).

Abstract translation: 本发明涉及一种通过脉冲宽度调制来操作微镜器件（50）的方法，包括以下步骤： - 提供微镜器件，其包括至少一个微镜元件（10），其围绕旋转轴线（30）可静电偏转 至少两个位置是第一位置和第二位置，通过向控制所述微镜元件的至少四个电极（21,22,23,24）施加电压信号，所述第一和第二电极（21,22）位于一个 另一侧的第三和第四电极（23,24）; - 在时间帧期间将强度的中间值与所述微镜（10）元件相关联，所述强度包括在第一值和第二值之间，所述第一值对应于所述第一位置，所述第二值对应于所述第二位置; - 微镜元件（10）在第一位置和第二位置之间切换，反之亦然，使得微镜元件（10）处于第一位置或第二位置，由此所述第一值和 所述第二值被获得，所述强度的中间值对应于微镜元件处于第一位置或第二位置的时间范围内的时间段的比率; 其特征在于，所述切换是通过在所述时间帧期间向所述第二和第三电极（22,23）施加固定电压信号而获得的，并且所述固定电压信号在半个时间段期间保持恒定，并且周期性电压信号具有周期相等 到第一和第四电极（21,24）的时间长度。

公开(公告)号：WO2004001715A1

公开(公告)日：2003-12-31

申请号：PCT/BE2003/000108

申请日：2003-06-24

Applicant: INTERUNIVERSITAIR MICROELEKTRONICA CENTRUM ,  UNIVERSITEIT GENT ,  DE SMET, Herbert ,  VAN DEN STEEN, Jean ,  VAN DOORSELAER, Geert ,  VAN CALSTER, André

Inventor： DE SMET, Herbert ,  VAN DEN STEEN, Jean ,  VAN DOORSELAER, Geert ,  VAN CALSTER, André

IPC: G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3648 ,  G09G3/3655 ,  G09G3/3659 ,  G09G2300/0809 ,  G09G2300/0814 ,  G09G2300/0823 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2310/0259

Abstract: The present invention provides an array of pixels, each pixel comprising: a pixel element, a pixel refresh circuit, a first memory element and a first switch element. Each pixel element comprises a first pixel electrode for individual control of the pixel element and a second pixel electrode, the second pixel electrode linking substantially all pixel elements in the array and being connected to a common counter-electrode. The first and second pixel electrode form a first capacitor. The pixel element has a threshold voltage and a modulation voltage. The pixel refresh circuit is intended for transferring electric charge related to a pixel data value from a data input of the pixel to the first pixel electrode via a charge transfer path. The first memory element is coupled to the pixel data input for storing electric charge related to the pixel data value. The first switch element is located between the first memory element and the first pixel electrode, and is for controlling charge transfer from the first memory element through the charge transfer path to the first pixel electrode. According to the present invention, the first switch element and the first memory element co-operate to transfer charge related to the pixel data value passively along the charge transfer path to the first capacitor. According to the present invention, the array further comprises means for applying a dynamically changing voltage to the common counter-electrode, the dynamically changing voltage changing between a first driving value and a second driving value so that the pixel data value is a signal comprised between zero volts and a data voltage value, the data voltage value being not smaller than the modulation voltage and smaller than the sum of the modulation voltage and the threshold voltage of any of the pixels elements. The present invention also provides a method for refreshing pixel values of an array of pixels.

Abstract translation: 本发明提供一种像素阵列，每个像素包括：像素元件，像素刷新电路，第一存储元件和第一开关元件。 每个像素元件包括用于单独控制像素元件的第一像素电极和第二像素电极，第二像素电极基本上连接阵列中的所有像素元件并连接到公共对置电极。 第一和第二像素电极形成第一电容器。 像素元件具有阈值电压和调制电压。 像素刷新电路旨在经由电荷转移路径将与像素数据值相关的电荷从像素的数据输入传送到第一像素电极。 第一存储元件耦合到像素数据输入端，用于存储与像素数据值相关的电荷。 第一开关元件位于第一存储元件和第一像素电极之间，并且用于控制从第一存储元件通过电荷转移路径到第一像素电极的电荷转移。 根据本发明，第一开关元件和第一存储元件协同工作以将与像素数据值有关的电荷沿着电荷传输路径被动地传送到第一电容器。 根据本发明，阵列还包括用于向公共对电极施加动态变化的电压的装置，动态变化的电压在第一驱动值和第二驱动值之间变化，使得像素数据值是包括在 零电压和数据电压值，数据电压值不小于调制电压，并且小于任何像素元件的调制电压和阈值电压之和。 本发明还提供了一种用于刷新像素阵列的像素值的方法。