JPWO2021200433A5 - - Google Patents
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- JPWO2021200433A5 JPWO2021200433A5 JP2022512008A JP2022512008A JPWO2021200433A5 JP WO2021200433 A5 JPWO2021200433 A5 JP WO2021200433A5 JP 2022512008 A JP2022512008 A JP 2022512008A JP 2022512008 A JP2022512008 A JP 2022512008A JP WO2021200433 A5 JPWO2021200433 A5 JP WO2021200433A5
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- curved glass
- glass
- windshield glass
- layer
- 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.)
- Granted
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- 239000011521 glass Substances 0.000 claims 21
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims 6
- 238000006243 chemical reaction Methods 0.000 claims 5
- 230000010287 polarization Effects 0.000 claims 5
- 239000000758 substrate Substances 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000004973 liquid crystal related substance Substances 0.000 claims 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims 1
Claims (9)
液晶化合物の螺旋配向構造を固定化した偏光変換層と、
コレステリック液晶相を固定してなるコレステリック液晶層と、
凹面を前記第１の曲面ガラスに向けて配置される第２の曲面ガラスとを有し、
前記第１の曲面ガラスの凸面側に、前記偏光変換層、コレステリック液晶層および前記第２の曲面ガラスが、この順番で設けられ、
前記偏光変換層における螺旋配向構造のピッチ数ｘ、および、前記偏光変換層の膜厚ｙ（単位μｍ）が、下記の式（ａ）～（ｃ）を全て満たす、ウインドシールドガラス。
（ａ）０．１≦ｘ≦１．０
（ｂ）０．５≦ｙ≦３．０
（ｃ）３０００≦（１５６０＊ｙ）／ｘ≦５００００ a first curved glass;
a polarization conversion layer in which a helically oriented structure of a liquid crystal compound is fixed;
a cholesteric liquid crystal layer formed by fixing a cholesteric liquid crystal phase;
a second curved glass having a concave surface facing the first curved glass;
The polarization conversion layer, the cholesteric liquid crystal layer and the second curved glass are provided in this order on the convex side of the first curved glass,
The windshield glass, wherein the pitch number x of the helical orientation structure in the polarization conversion layer and the film thickness y (unit: μm) of the polarization conversion layer satisfy all of the following formulas (a) to (c).
(a) 0.1≤x≤1.0
(b) 0.5≤y≤3.0
(c) 3000≦(1560*y)/x≦50000
前記位相差層は、波長５５０ｎｍにおける正面リタデーションが５０～１４０ｎｍで、かつ、ウインドシールドガラスを車両に装着した際における前記第１の曲面ガラス表面の鉛直方向上方に対応する方向を０°とした際に、遅相軸の角度が±１０～５０°である、請求項１に記載のウインドシールドガラス。 having a retardation layer between the cholesteric liquid crystal layer and the second curved glass;
The retardation layer has a front retardation of 50 to 140 nm at a wavelength of 550 nm, and the direction corresponding to the vertical direction above the surface of the first curved glass when the windshield glass is mounted on the vehicle is 0 °. The windshield glass according to claim 1, wherein the angle of the slow axis is ±10 to 50°.
（ｄ）０．２≦ｘ≦０．８
（ｅ）０．６≦ｙ≦２．０
（ｆ）６０００≦（１５６０＊ｙ）／ｘ≦１００００ 3. The windshield glass according to claim 1, wherein said pitch number x and said film thickness y (unit: μm) satisfy all of the following formulas (d) to (f).
(d) 0.2≤x≤0.8
(e) 0.6≤y≤2.0
(f) 6000≦(1560*y)/x≦10000
前記ウインドシールドガラスの前記第１の曲面ガラスの凹面に、投映光を照射するプロジェクターとを有する、ヘッドアップディスプレイシステム。 A windshield glass according to any one of claims 1 to 7 ;
A head-up display system comprising a projector that irradiates a concave surface of the first curved glass of the windshield glass with projection light.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020060712 | 2020-03-30 | ||
| JP2020060712 | 2020-03-30 | ||
| PCT/JP2021/012159 WO2021200433A1 (en) | 2020-03-30 | 2021-03-24 | Wind shield glass and head-up display system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2021200433A1 JPWO2021200433A1 (en) | 2021-10-07 |
| JPWO2021200433A5 true JPWO2021200433A5 (en) | 2022-11-25 |
| JP7260715B2 JP7260715B2 (en) | 2023-04-18 |
Family
ID=77929225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022512008A Active JP7260715B2 (en) | 2020-03-30 | 2021-03-24 | Windshield glass and head-up display system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7260715B2 (en) |
| WO (1) | WO2021200433A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023200018A1 (en) * | 2022-04-15 | 2023-10-19 | 富士フイルム株式会社 | Reflective film, multilayer body, windshield glass, and image display system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4863174B2 (en) * | 2007-05-18 | 2012-01-25 | 国立大学法人東京工業大学 | Light reflecting film and laser oscillation element using the same |
| WO2019035358A1 (en) | 2017-08-15 | 2019-02-21 | 富士フイルム株式会社 | Vehicular mirror, and vehicular mirror equipped with image display function |
| JP2018116308A (en) * | 2018-04-06 | 2018-07-26 | 富士フイルム株式会社 | Reflection member available for heat shield use and projector including reflection member |
| CN112840244B (en) * | 2018-10-17 | 2023-02-28 | 富士胶片株式会社 | Member for projection image display, windshield, and head-up display system |
| JP7299920B2 (en) * | 2018-12-10 | 2023-06-28 | 富士フイルム株式会社 | Projected image display materials, windshield glass and head-up display systems |
| JP7382392B2 (en) * | 2019-03-13 | 2023-11-16 | 富士フイルム株式会社 | Projection display components, windshield glass, and head-up display systems |
| JP7260449B2 (en) * | 2019-09-30 | 2023-04-18 | 富士フイルム株式会社 | Projected image display materials, windshield glass and head-up display systems |
-
2021
- 2021-03-24 WO PCT/JP2021/012159 patent/WO2021200433A1/en active Application Filing
- 2021-03-24 JP JP2022512008A patent/JP7260715B2/en active Active
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