JP2003066428A - Projector using holographic polymer dispersed liquid crystal - Google Patents
Projector using holographic polymer dispersed liquid crystalInfo
- Publication number
- JP2003066428A JP2003066428A JP2001252991A JP2001252991A JP2003066428A JP 2003066428 A JP2003066428 A JP 2003066428A JP 2001252991 A JP2001252991 A JP 2001252991A JP 2001252991 A JP2001252991 A JP 2001252991A JP 2003066428 A JP2003066428 A JP 2003066428A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- projector
- crystal panel
- holographic polymer
- dispersed liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Liquid Crystal (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Holo Graphy (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、単版式の液晶プロ
ジェクターに関するものであり、特に、ホログラフィッ
ク高分子分散液晶からの回折光とスリットによって投影
画像を形成することにより、明るい画像の得られるプロ
ジェクターを提供する技術に関するものである。
【０００２】
【従来の技術】従来の液晶パネルを用いたプロジェクタ
ーの一例の概要図を図１に示す。この図で、照明光
（１）は、集光レンズ（２）、偏光フィルター（３）、
カラーフィルター（４）、液晶パネル（５）、偏光フィ
ルター（６）、投影レンズ（７）を通って、図示しない
スクリーン上に液晶パネル（４）が結像するようになっ
ている。このため、偏光フィルター（３）、カラーフィ
ルター（４）、液晶パネル（５）、偏光フィルター
（６）により作成されたカラー画像が、スクリーン上で
観察できる。
【０００３】このような普通の液晶パネルでの画像に
は、直線偏光しか利用できないため、偏光フィルター
（３）によって、照明光（１）の半分の光がカットさ
れ、光の利用効率が悪く、明るい像が得られにくいとい
う問題点があった。
【０００４】
【発明が解決しようとする課題】上述したように従来の
液晶プロジェクターでは、偏光を用いる必要があるため
に、照明光の半分の光しか利用できず、明るい像を得に
くいとう問題点があった。本発明は、このような問題点
を解決するためになされたものであり、プロジェクター
で投影する画像をホログラフィック高分子分散液晶を用
いたパネルとスリットによって形成することで、偏光さ
れていない光での表示を可能として明るい画像を得るこ
とを目的としている。
【０００５】
【課題を解決するための手段】このような問題点を解決
するために、本発明では、ホログラフィック高分子分散
液晶のセルからなる液晶パネルと、スリット、および投
影レンズを有し、前記液晶パネルには、ＲＧＢに対応さ
せて、格子間隔の異なる体積透過型のホログラムが記録
されており、これら各セルに記録されているホログラム
から、スリットの位置に、それぞれスリットの位置に赤
色、緑色、青色の光が回折されるようになっていること
を特徴とするような、ホログラフィック高分子分散液晶
を用いたプロジェクターを提供している。
【０００６】
【発明の実施の形態】以下、本発明のプロジェクターに
ついて図面を用いて詳細に説明する。まず、ホログラフ
ィック高分子分散液晶について簡単に説明する。図２は
ホログラフィック高分子分散液晶の一例を表す概要図で
ある。この図で、液晶セルの中には、高分子樹脂（８）
と、直径０．１μｍ以下程度の小さなネマティック液晶
の液滴（９）とが、回折格子を形成するように分布して
いる。
【０００７】このようなセルに電界をかけるとネマティ
ック液晶の配向が変化して、屈折率が変化するので、電
界の強度によって回折効率を変化させることができると
いうものである。
【０００８】なお、このようなホログラフィック高分子
分散液晶は、例えば図３のように、液晶セル中に液晶と
光硬化樹脂を入れておいて、２本のレーザー光の干渉に
よりホログラムを記録するという方法により記録するこ
とができる。
【０００９】次に、本発明のプロジェクターについて説
明する。図４は、本発明のホログラフィック高分子分散
液晶を用いたプロジェクターの一実施例を示す概要図で
ある。この図で、白色の照明光（１０）は、ホログラフ
ィック高分子分散液晶パネル（１１）を斜め方向から照
明する。液晶パネル（１１）からの回折光はスリット
（１２）を通過して、投影レンズ（１３）に入射し、図
示しないスクリーン上に液晶パネル（１１）の像を結像
する。
【００１０】ここで、ホログラフィック高分子分散液晶
パネル（１１）は、図５のように多数の細かいセルから
構成されており、これらは、ＲＧＢに対応させてある。
ＲＧＢの各セルには格子間隔の異なる体積透過型ホログ
ラムが記録されており、白色光で照明された時に、図６
に示すように、Ｒセルからは回折光（１４）、Ｇセルか
らは回折光（１５）、Ｂセルからは回折光（１６）のよ
うに、虹色に波長分散した光が生じる。これらの回折光
はスリット（１２）によって遮られ、Ｒセルからの回折
光（１４）については赤色の光のみ、Ｇセルからの回折
光（１５）からは緑色の光のみ、Ｂセルからの回折光
（１６）からは青色の光のみが、通過して投影レンズに
入射する。
【００１１】このため、投影レンズ（１３）によって、
Ｒセル部分は赤色、Ｇセル部分は緑色、Ｂセル部分は青
色の像として結像されることになる。
【００１２】一方、投影される各セル画像の明暗は、液
晶パネル（５ａ）にホログラフィック高分子分散液晶の
セルによって形成されているので、従来の液晶パネルと
同様に各セルの電界を変化させることで変えることがで
きる。この場合、従来の液晶パネルのように偏光面の変
化ではなく、回折光の強度で明るさ変調を行っているの
で、直線偏光を用いる必要がなく、従来の液晶パネルよ
りも明るい像が得られる。また、本発明のプロジェクタ
ーは、偏光フィルターや、カラーフィルターを用いる必
要が無いため、プロジェクターの構成がシンプルになる
という利点も持っている。
【００１３】
【発明の効果】本発明では、ホログラフィック高分子分
散液晶のセルからなる液晶パネルと、スリット、および
投影レンズを有し、前記液晶パネルには、ＲＧＢに対応
させて、格子間隔の異なる体積透過型のホログラムが記
録されており、これら各セルに記録されているホログラ
ムから、スリットの位置に、それぞれスリットの位置に
赤色、緑色、青色の光が回折されるようにしているの
で、偏光フィルターによる照明光のロスがなく、明るい
像のプロジェクターが得られる。Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a single-panel type liquid crystal projector, and more particularly, to a method of forming a projection image by using diffracted light from a holographic polymer dispersed liquid crystal and a slit. Accordingly, the present invention relates to a technique for providing a projector capable of obtaining a bright image. 2. Description of the Related Art FIG. 1 is a schematic diagram showing an example of a projector using a conventional liquid crystal panel. In this figure, the illumination light (1) includes a condenser lens (2), a polarizing filter (3),
The liquid crystal panel (4) forms an image on a screen (not shown) through a color filter (4), a liquid crystal panel (5), a polarizing filter (6), and a projection lens (7). Therefore, a color image created by the polarizing filter (3), the color filter (4), the liquid crystal panel (5), and the polarizing filter (6) can be observed on the screen. [0003] Since only linearly polarized light can be used for an image on such an ordinary liquid crystal panel, half of the illumination light (1) is cut off by the polarizing filter (3), resulting in poor light use efficiency. There is a problem that it is difficult to obtain a bright image. [0004] As described above, in the conventional liquid crystal projector, since it is necessary to use polarized light, only half of the illumination light can be used, and it is difficult to obtain a bright image. was there. The present invention has been made in order to solve such a problem, and an image projected by a projector is formed by a panel using a holographic polymer-dispersed liquid crystal and a slit, so that unpolarized light is used. The purpose of the present invention is to obtain a bright image by enabling display of an image. According to the present invention, there is provided a liquid crystal panel comprising a holographic polymer-dispersed liquid crystal cell, a slit, and a projection lens. On the liquid crystal panel, holograms of volume transmission type having different lattice intervals are recorded in correspondence with RGB, and from the holograms recorded in these cells, red, There is provided a projector using a holographic polymer-dispersed liquid crystal, which is characterized in that green and blue lights are diffracted. Hereinafter, a projector of the present invention will be described in detail with reference to the drawings. First, a holographic polymer-dispersed liquid crystal will be briefly described. FIG. 2 is a schematic diagram illustrating an example of a holographic polymer-dispersed liquid crystal. In this figure, a polymer resin (8) is contained in the liquid crystal cell.
And small nematic liquid crystal droplets (9) having a diameter of about 0.1 μm or less are distributed so as to form a diffraction grating. [0007] When an electric field is applied to such a cell, the orientation of the nematic liquid crystal changes and the refractive index changes, so that the diffraction efficiency can be changed by the intensity of the electric field. In such a holographic polymer dispersed liquid crystal, as shown in FIG. 3, for example, a liquid crystal and a photocurable resin are put in a liquid crystal cell, and a hologram is recorded by interference of two laser beams. Can be recorded. Next, the projector of the present invention will be described. FIG. 4 is a schematic diagram showing one embodiment of a projector using the holographic polymer dispersed liquid crystal of the present invention. In this figure, white illumination light (10) illuminates a holographic polymer dispersed liquid crystal panel (11) from an oblique direction. The diffracted light from the liquid crystal panel (11) passes through the slit (12), enters the projection lens (13), and forms an image of the liquid crystal panel (11) on a screen (not shown). Here, the holographic polymer-dispersed liquid crystal panel (11) is composed of a large number of fine cells as shown in FIG. 5, and these correspond to RGB.
In each of the RGB cells, volume transmission holograms having different lattice intervals are recorded, and when illuminated with white light, FIG.
As shown in (1), light that is wavelength-dispersed in a rainbow color, such as diffracted light (14) from the R cell, diffracted light (15) from the G cell, and diffracted light (16) from the B cell. These diffracted lights are blocked by the slits (12), only red light is diffracted from the R cell (14), only green light is diffracted from the G cell (15), and diffracted from the B cell. From the light (16), only blue light passes through and enters the projection lens. For this reason, the projection lens (13)
The R cell portion is formed as a red image, the G cell portion is formed as a green image, and the B cell portion is formed as a blue image. On the other hand, the brightness of each projected cell image is changed by the holographic polymer-dispersed liquid crystal cells on the liquid crystal panel (5a), so that the electric field of each cell is changed similarly to the conventional liquid crystal panel. Can be changed. In this case, since the brightness is modulated by the intensity of the diffracted light instead of the change in the polarization plane as in the conventional liquid crystal panel, there is no need to use linearly polarized light, and an image brighter than the conventional liquid crystal panel can be obtained. . Further, the projector of the present invention does not need to use a polarizing filter or a color filter, and thus has an advantage that the configuration of the projector is simplified. According to the present invention, there is provided a liquid crystal panel comprising a holographic polymer-dispersed liquid crystal cell, a slit, and a projection lens. The liquid crystal panel has a lattice spacing corresponding to RGB. Since different volume transmission type holograms are recorded, and from the holograms recorded in these cells, red, green, and blue light are diffracted at the slit positions, respectively, at the slit positions. There is no loss of illumination light due to the polarizing filter, and a bright image projector can be obtained.
【図面の簡単な説明】
【図１】従来の液晶プロジェクターの一例を示す概要
図。
【図２】ホログラフィック高分子分散液晶の一例を示す
概要図。
【図３】ホログラフィック高分子分散液晶の作成法の一
例を示す概要図。
【図４】本発明のプロジェクターの一例を示す概要図。
【図５】本発明で用いる液晶パネルの一例を示す概要
図。
【図６】本発明のプロジェクターでの液晶パネルからの
回折光の様子を表すための概要図。
【符号の説明】
１…照明光
２…集光レンズ
３…偏光フィルタ
４…カラーフィルタ
５…液晶パネル
５ａ…液晶パネル
５ｂ…ホログラム
６…偏光フィルタ
７…投影レンズ
８…高分子樹脂
９…ネマティック液晶の液滴
１０…照明光
１１…ホログラフィック高分子分散液晶パネル
１２…スリットBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an example of a conventional liquid crystal projector. FIG. 2 is a schematic view showing an example of a holographic polymer-dispersed liquid crystal. FIG. 3 is a schematic diagram showing an example of a method for producing a holographic polymer-dispersed liquid crystal. FIG. 4 is a schematic diagram showing an example of a projector according to the invention. FIG. 5 is a schematic view showing an example of a liquid crystal panel used in the present invention. FIG. 6 is a schematic diagram showing a state of diffracted light from a liquid crystal panel in the projector of the invention. [Description of Signs] 1 ... Illumination light 2 ... Condensing lens 3 ... Polarizing filter 4 ... Color filter 5 ... Liquid crystal panel 5a ... Liquid crystal panel 5b ... Hologram 6 ... Polarizing filter 7 ... Projection lens 8 ... Polymer resin 9 ... Nematic liquid crystal Droplet 10 ... Illumination light 11 ... Holographic polymer dispersed liquid crystal panel 12 ... Slit
フロントページの続き Ｆターム(参考） 2H049 CA01 CA05 CA08 CA09 CA15 CA22 2H088 EA13 EA15 EA18 EA20 EA48 GA10 HA24 HA28 JA03 MA05 MA06 2H089 HA04 KA04 KA08 QA05 RA04 TA11 UA05 2H091 FA19 FA41Z FC10 FC23 FC29 FD06 FD12 FD24 JA02 LA15 LA16 MA07 2K008 AA10 CC03 EE01 FF17 Continuation of front page F term (reference) 2H049 CA01 CA05 CA08 CA09 CA15 CA22 2H088 EA13 EA15 EA18 EA20 EA48 GA10 HA24 HA28 JA03 MA05 MA06 2H089 HA04 KA04 KA08 QA05 RA04 TA11 UA05 2H091 FA19 FA41Z FC10 FC23 FC29 FD06 FD12 FD24 JA02 LA15 LA16 MA07 2K008 AA10 CC03 EE01 FF17
Claims (1)
らなる液晶パネルと、スリット、および投影レンズを有
し、前記液晶パネルには、ＲＧＢに対応させて、格子間
隔の異なる体積透過型のホログラムが記録されており、 これら各セルに記録されているホログラムから、スリッ
トの位置に、それぞれスリットの位置に赤色、緑色、青
色の光が回折されるようになっていることを特徴とする
ホログラフィック高分子分散液晶を用いたプロジェクタ
ー。Claims: 1. A liquid crystal panel comprising a holographic polymer-dispersed liquid crystal cell, a slit, and a projection lens, wherein the liquid crystal panel has different lattice spacings corresponding to RGB. A volume transmission type hologram is recorded. From the hologram recorded in each of these cells, red, green, and blue light are diffracted at the slit positions, respectively. A projector using a holographic polymer dispersed liquid crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001252991A JP2003066428A (en) | 2001-08-23 | 2001-08-23 | Projector using holographic polymer dispersed liquid crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001252991A JP2003066428A (en) | 2001-08-23 | 2001-08-23 | Projector using holographic polymer dispersed liquid crystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003066428A true JP2003066428A (en) | 2003-03-05 |
Family
ID=19081381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001252991A Pending JP2003066428A (en) | 2001-08-23 | 2001-08-23 | Projector using holographic polymer dispersed liquid crystal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003066428A (en) |
Cited By (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100741980B1 (en) | 2005-07-06 | 2007-07-23 | 엘지전자 주식회사 | Multifocal lens |
| US10089516B2 (en) | 2013-07-31 | 2018-10-02 | Digilens, Inc. | Method and apparatus for contact image sensing |
| US10145533B2 (en) | 2005-11-11 | 2018-12-04 | Digilens, Inc. | Compact holographic illumination device |
| US10156681B2 (en) | 2015-02-12 | 2018-12-18 | Digilens Inc. | Waveguide grating device |
| US10185154B2 (en) | 2011-04-07 | 2019-01-22 | Digilens, Inc. | Laser despeckler based on angular diversity |
| US10209517B2 (en) | 2013-05-20 | 2019-02-19 | Digilens, Inc. | Holographic waveguide eye tracker |
| US10216061B2 (en) | 2012-01-06 | 2019-02-26 | Digilens, Inc. | Contact image sensor using switchable bragg gratings |
| US10234696B2 (en) | 2007-07-26 | 2019-03-19 | Digilens, Inc. | Optical apparatus for recording a holographic device and method of recording |
| US10241330B2 (en) | 2014-09-19 | 2019-03-26 | Digilens, Inc. | Method and apparatus for generating input images for holographic waveguide displays |
| US10330777B2 (en) | 2015-01-20 | 2019-06-25 | Digilens Inc. | Holographic waveguide lidar |
| US10359736B2 (en) | 2014-08-08 | 2019-07-23 | Digilens Inc. | Method for holographic mastering and replication |
| US10423222B2 (en) | 2014-09-26 | 2019-09-24 | Digilens Inc. | Holographic waveguide optical tracker |
| US10437051B2 (en) | 2012-05-11 | 2019-10-08 | Digilens Inc. | Apparatus for eye tracking |
| US10437064B2 (en) | 2015-01-12 | 2019-10-08 | Digilens Inc. | Environmentally isolated waveguide display |
| US10459145B2 (en) | 2015-03-16 | 2019-10-29 | Digilens Inc. | Waveguide device incorporating a light pipe |
| US10545346B2 (en) | 2017-01-05 | 2020-01-28 | Digilens Inc. | Wearable heads up displays |
| US10591756B2 (en) | 2015-03-31 | 2020-03-17 | Digilens Inc. | Method and apparatus for contact image sensing |
| US10642058B2 (en) | 2011-08-24 | 2020-05-05 | Digilens Inc. | Wearable data display |
| US10670876B2 (en) | 2011-08-24 | 2020-06-02 | Digilens Inc. | Waveguide laser illuminator incorporating a despeckler |
| US10678053B2 (en) | 2009-04-27 | 2020-06-09 | Digilens Inc. | Diffractive projection apparatus |
| US10690916B2 (en) | 2015-10-05 | 2020-06-23 | Digilens Inc. | Apparatus for providing waveguide displays with two-dimensional pupil expansion |
| US10690851B2 (en) | 2018-03-16 | 2020-06-23 | Digilens Inc. | Holographic waveguides incorporating birefringence control and methods for their fabrication |
| US10732569B2 (en) | 2018-01-08 | 2020-08-04 | Digilens Inc. | Systems and methods for high-throughput recording of holographic gratings in waveguide cells |
| US10859768B2 (en) | 2016-03-24 | 2020-12-08 | Digilens Inc. | Method and apparatus for providing a polarization selective holographic waveguide device |
| US10890707B2 (en) | 2016-04-11 | 2021-01-12 | Digilens Inc. | Holographic waveguide apparatus for structured light projection |
| US10914950B2 (en) | 2018-01-08 | 2021-02-09 | Digilens Inc. | Waveguide architectures and related methods of manufacturing |
| US10942430B2 (en) | 2017-10-16 | 2021-03-09 | Digilens Inc. | Systems and methods for multiplying the image resolution of a pixelated display |
| US10983340B2 (en) | 2016-02-04 | 2021-04-20 | Digilens Inc. | Holographic waveguide optical tracker |
| US11307432B2 (en) | 2014-08-08 | 2022-04-19 | Digilens Inc. | Waveguide laser illuminator incorporating a Despeckler |
| US11378732B2 (en) | 2019-03-12 | 2022-07-05 | DigLens Inc. | Holographic waveguide backlight and related methods of manufacturing |
| US11402801B2 (en) | 2018-07-25 | 2022-08-02 | Digilens Inc. | Systems and methods for fabricating a multilayer optical structure |
| US11442222B2 (en) | 2019-08-29 | 2022-09-13 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
| US11448937B2 (en) | 2012-11-16 | 2022-09-20 | Digilens Inc. | Transparent waveguide display for tiling a display having plural optical powers using overlapping and offset FOV tiles |
| US11460621B2 (en) | 2012-04-25 | 2022-10-04 | Rockwell Collins, Inc. | Holographic wide angle display |
| US11480788B2 (en) | 2015-01-12 | 2022-10-25 | Digilens Inc. | Light field displays incorporating holographic waveguides |
| US11513350B2 (en) | 2016-12-02 | 2022-11-29 | Digilens Inc. | Waveguide device with uniform output illumination |
| US11543594B2 (en) | 2019-02-15 | 2023-01-03 | Digilens Inc. | Methods and apparatuses for providing a holographic waveguide display using integrated gratings |
| US11681143B2 (en) | 2019-07-29 | 2023-06-20 | Digilens Inc. | Methods and apparatus for multiplying the image resolution and field-of-view of a pixelated display |
| US11726332B2 (en) | 2009-04-27 | 2023-08-15 | Digilens Inc. | Diffractive projection apparatus |
| US11747568B2 (en) | 2019-06-07 | 2023-09-05 | Digilens Inc. | Waveguides incorporating transmissive and reflective gratings and related methods of manufacturing |
| US12092914B2 (en) | 2018-01-08 | 2024-09-17 | Digilens Inc. | Systems and methods for manufacturing waveguide cells |
| US12140764B2 (en) | 2019-02-15 | 2024-11-12 | Digilens Inc. | Wide angle waveguide display |
| US12158612B2 (en) | 2021-03-05 | 2024-12-03 | Digilens Inc. | Evacuated periodic structures and methods of manufacturing |
| US12210153B2 (en) | 2019-01-14 | 2025-01-28 | Digilens Inc. | Holographic waveguide display with light control layer |
| US12222499B2 (en) | 2020-12-21 | 2025-02-11 | Digilens Inc. | Eye glow suppression in waveguide based displays |
-
2001
- 2001-08-23 JP JP2001252991A patent/JP2003066428A/en active Pending
Cited By (71)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100741980B1 (en) | 2005-07-06 | 2007-07-23 | 엘지전자 주식회사 | Multifocal lens |
| US10145533B2 (en) | 2005-11-11 | 2018-12-04 | Digilens, Inc. | Compact holographic illumination device |
| US10234696B2 (en) | 2007-07-26 | 2019-03-19 | Digilens, Inc. | Optical apparatus for recording a holographic device and method of recording |
| US10725312B2 (en) | 2007-07-26 | 2020-07-28 | Digilens Inc. | Laser illumination device |
| US10678053B2 (en) | 2009-04-27 | 2020-06-09 | Digilens Inc. | Diffractive projection apparatus |
| US11175512B2 (en) | 2009-04-27 | 2021-11-16 | Digilens Inc. | Diffractive projection apparatus |
| US11726332B2 (en) | 2009-04-27 | 2023-08-15 | Digilens Inc. | Diffractive projection apparatus |
| US11487131B2 (en) | 2011-04-07 | 2022-11-01 | Digilens Inc. | Laser despeckler based on angular diversity |
| US10185154B2 (en) | 2011-04-07 | 2019-01-22 | Digilens, Inc. | Laser despeckler based on angular diversity |
| US11287666B2 (en) | 2011-08-24 | 2022-03-29 | Digilens, Inc. | Wearable data display |
| US11874477B2 (en) | 2011-08-24 | 2024-01-16 | Digilens Inc. | Wearable data display |
| US10670876B2 (en) | 2011-08-24 | 2020-06-02 | Digilens Inc. | Waveguide laser illuminator incorporating a despeckler |
| US10642058B2 (en) | 2011-08-24 | 2020-05-05 | Digilens Inc. | Wearable data display |
| US10216061B2 (en) | 2012-01-06 | 2019-02-26 | Digilens, Inc. | Contact image sensor using switchable bragg gratings |
| US11460621B2 (en) | 2012-04-25 | 2022-10-04 | Rockwell Collins, Inc. | Holographic wide angle display |
| US10437051B2 (en) | 2012-05-11 | 2019-10-08 | Digilens Inc. | Apparatus for eye tracking |
| US11994674B2 (en) | 2012-05-11 | 2024-05-28 | Digilens Inc. | Apparatus for eye tracking |
| US11448937B2 (en) | 2012-11-16 | 2022-09-20 | Digilens Inc. | Transparent waveguide display for tiling a display having plural optical powers using overlapping and offset FOV tiles |
| US10209517B2 (en) | 2013-05-20 | 2019-02-19 | Digilens, Inc. | Holographic waveguide eye tracker |
| US11662590B2 (en) | 2013-05-20 | 2023-05-30 | Digilens Inc. | Holographic waveguide eye tracker |
| US10423813B2 (en) | 2013-07-31 | 2019-09-24 | Digilens Inc. | Method and apparatus for contact image sensing |
| US10089516B2 (en) | 2013-07-31 | 2018-10-02 | Digilens, Inc. | Method and apparatus for contact image sensing |
| US11709373B2 (en) | 2014-08-08 | 2023-07-25 | Digilens Inc. | Waveguide laser illuminator incorporating a despeckler |
| US11307432B2 (en) | 2014-08-08 | 2022-04-19 | Digilens Inc. | Waveguide laser illuminator incorporating a Despeckler |
| US10359736B2 (en) | 2014-08-08 | 2019-07-23 | Digilens Inc. | Method for holographic mastering and replication |
| US11726323B2 (en) | 2014-09-19 | 2023-08-15 | Digilens Inc. | Method and apparatus for generating input images for holographic waveguide displays |
| US10241330B2 (en) | 2014-09-19 | 2019-03-26 | Digilens, Inc. | Method and apparatus for generating input images for holographic waveguide displays |
| US10423222B2 (en) | 2014-09-26 | 2019-09-24 | Digilens Inc. | Holographic waveguide optical tracker |
| US10437064B2 (en) | 2015-01-12 | 2019-10-08 | Digilens Inc. | Environmentally isolated waveguide display |
| US11726329B2 (en) | 2015-01-12 | 2023-08-15 | Digilens Inc. | Environmentally isolated waveguide display |
| US11740472B2 (en) | 2015-01-12 | 2023-08-29 | Digilens Inc. | Environmentally isolated waveguide display |
| US11480788B2 (en) | 2015-01-12 | 2022-10-25 | Digilens Inc. | Light field displays incorporating holographic waveguides |
| US10330777B2 (en) | 2015-01-20 | 2019-06-25 | Digilens Inc. | Holographic waveguide lidar |
| US10527797B2 (en) | 2015-02-12 | 2020-01-07 | Digilens Inc. | Waveguide grating device |
| US11703645B2 (en) | 2015-02-12 | 2023-07-18 | Digilens Inc. | Waveguide grating device |
| US10156681B2 (en) | 2015-02-12 | 2018-12-18 | Digilens Inc. | Waveguide grating device |
| US11169314B2 (en) | 2015-03-16 | 2021-11-09 | Digilens Inc. | Waveguide device incorporating a light pipe |
| US10459145B2 (en) | 2015-03-16 | 2019-10-29 | Digilens Inc. | Waveguide device incorporating a light pipe |
| US12013561B2 (en) | 2015-03-16 | 2024-06-18 | Digilens Inc. | Waveguide device incorporating a light pipe |
| US10591756B2 (en) | 2015-03-31 | 2020-03-17 | Digilens Inc. | Method and apparatus for contact image sensing |
| US10690916B2 (en) | 2015-10-05 | 2020-06-23 | Digilens Inc. | Apparatus for providing waveguide displays with two-dimensional pupil expansion |
| US11281013B2 (en) | 2015-10-05 | 2022-03-22 | Digilens Inc. | Apparatus for providing waveguide displays with two-dimensional pupil expansion |
| US11754842B2 (en) | 2015-10-05 | 2023-09-12 | Digilens Inc. | Apparatus for providing waveguide displays with two-dimensional pupil expansion |
| US10983340B2 (en) | 2016-02-04 | 2021-04-20 | Digilens Inc. | Holographic waveguide optical tracker |
| US11604314B2 (en) | 2016-03-24 | 2023-03-14 | Digilens Inc. | Method and apparatus for providing a polarization selective holographic waveguide device |
| US10859768B2 (en) | 2016-03-24 | 2020-12-08 | Digilens Inc. | Method and apparatus for providing a polarization selective holographic waveguide device |
| US10890707B2 (en) | 2016-04-11 | 2021-01-12 | Digilens Inc. | Holographic waveguide apparatus for structured light projection |
| US11513350B2 (en) | 2016-12-02 | 2022-11-29 | Digilens Inc. | Waveguide device with uniform output illumination |
| US12248150B2 (en) | 2017-01-05 | 2025-03-11 | Digilens Inc. | Wearable heads up displays |
| US10545346B2 (en) | 2017-01-05 | 2020-01-28 | Digilens Inc. | Wearable heads up displays |
| US11194162B2 (en) | 2017-01-05 | 2021-12-07 | Digilens Inc. | Wearable heads up displays |
| US11586046B2 (en) | 2017-01-05 | 2023-02-21 | Digilens Inc. | Wearable heads up displays |
| US10942430B2 (en) | 2017-10-16 | 2021-03-09 | Digilens Inc. | Systems and methods for multiplying the image resolution of a pixelated display |
| US10914950B2 (en) | 2018-01-08 | 2021-02-09 | Digilens Inc. | Waveguide architectures and related methods of manufacturing |
| US10732569B2 (en) | 2018-01-08 | 2020-08-04 | Digilens Inc. | Systems and methods for high-throughput recording of holographic gratings in waveguide cells |
| US12092914B2 (en) | 2018-01-08 | 2024-09-17 | Digilens Inc. | Systems and methods for manufacturing waveguide cells |
| US10690851B2 (en) | 2018-03-16 | 2020-06-23 | Digilens Inc. | Holographic waveguides incorporating birefringence control and methods for their fabrication |
| US11150408B2 (en) | 2018-03-16 | 2021-10-19 | Digilens Inc. | Holographic waveguides incorporating birefringence control and methods for their fabrication |
| US11726261B2 (en) | 2018-03-16 | 2023-08-15 | Digilens Inc. | Holographic waveguides incorporating birefringence control and methods for their fabrication |
| US11402801B2 (en) | 2018-07-25 | 2022-08-02 | Digilens Inc. | Systems and methods for fabricating a multilayer optical structure |
| US12210153B2 (en) | 2019-01-14 | 2025-01-28 | Digilens Inc. | Holographic waveguide display with light control layer |
| US12140764B2 (en) | 2019-02-15 | 2024-11-12 | Digilens Inc. | Wide angle waveguide display |
| US11543594B2 (en) | 2019-02-15 | 2023-01-03 | Digilens Inc. | Methods and apparatuses for providing a holographic waveguide display using integrated gratings |
| US11378732B2 (en) | 2019-03-12 | 2022-07-05 | DigLens Inc. | Holographic waveguide backlight and related methods of manufacturing |
| US11747568B2 (en) | 2019-06-07 | 2023-09-05 | Digilens Inc. | Waveguides incorporating transmissive and reflective gratings and related methods of manufacturing |
| US11681143B2 (en) | 2019-07-29 | 2023-06-20 | Digilens Inc. | Methods and apparatus for multiplying the image resolution and field-of-view of a pixelated display |
| US11899238B2 (en) | 2019-08-29 | 2024-02-13 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
| US11592614B2 (en) | 2019-08-29 | 2023-02-28 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
| US11442222B2 (en) | 2019-08-29 | 2022-09-13 | Digilens Inc. | Evacuated gratings and methods of manufacturing |
| US12222499B2 (en) | 2020-12-21 | 2025-02-11 | Digilens Inc. | Eye glow suppression in waveguide based displays |
| US12158612B2 (en) | 2021-03-05 | 2024-12-03 | Digilens Inc. | Evacuated periodic structures and methods of manufacturing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2003066428A (en) | Projector using holographic polymer dispersed liquid crystal | |
| TW482929B (en) | Display device having diffraction grating | |
| EP1420597B1 (en) | Projector | |
| JP4052282B2 (en) | projector | |
| JPH11271744A (en) | Color liquid crystal display device | |
| US5608552A (en) | Liquid crystal display having an off-axis full-color holographic filter | |
| WO2016125624A1 (en) | Display device | |
| JPS62293223A (en) | Color display device | |
| CN100523941C (en) | Projector system | |
| JP4707270B2 (en) | Image projection device | |
| JP2003090916A (en) | Wave plate and projection display device | |
| JPH075469A (en) | Liquid crystal panel and its manufacture, and projection type display device using the same | |
| JP3608756B2 (en) | Liquid crystal display | |
| JP2005309125A (en) | Reflection type liquid crystal illumination optical system and picture display optical system | |
| JP3647206B2 (en) | Optical modulation device and projection device using the same | |
| JP3206534B2 (en) | Color image forming equipment | |
| JP3915712B2 (en) | Polarization separating element and projection display device using the same | |
| JPS62295025A (en) | Projection type display device | |
| JPS62295024A (en) | Projection type display device | |
| JPH02211418A (en) | optical equipment | |
| Takahashi et al. | Full-color 3D video system using grating image | |
| JPS63104019A (en) | Projection type color display device | |
| JP3952765B2 (en) | Image display device | |
| JPH1048422A (en) | Hologram color filter, and liquid crystal display device using the same | |
| JP4479982B2 (en) | Projection display device using hologram color filter |