JPH02140787A - Hologram generating method - Google Patents
Hologram generating methodInfo
- Publication number
- JPH02140787A JPH02140787A JP29363788A JP29363788A JPH02140787A JP H02140787 A JPH02140787 A JP H02140787A JP 29363788 A JP29363788 A JP 29363788A JP 29363788 A JP29363788 A JP 29363788A JP H02140787 A JPH02140787 A JP H02140787A
- Authority
- JP
- Japan
- Prior art keywords
- hologram
- dry plate
- antireflection film
- film
- hologram dry
- 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
- 238000000034 method Methods 0.000 title description 10
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 229920002120 photoresistant polymer Polymers 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔概 要〕
反射型のホログラムの作成方法に関し、ノイズ光の少な
い高品質の反射型ホログラムを筒車な方法で得ることを
目的とし、
ホログラム乾板の両面からレーザ光を照射して感光膜を
干渉露光する際に、ホログラム乾板の裏面（感光膜とは
反対側の面）に反射防止膜を形成すると共に、ホログラ
ム乾板の感光膜面上にマツチング液を介して反射防止膜
を密着させることを含み構成する。[Detailed Description of the Invention] [Summary] Regarding a method for creating a reflection hologram, the aim is to obtain a high-quality reflection hologram with less noise light using an hour wheel method. When the photoresist film is subjected to interference exposure by irradiation, an anti-reflection film is formed on the back side of the hologram dry plate (the surface opposite to the photoresist film), and an anti-reflection film is applied to the photoresist film surface of the hologram dry plate via a matching liquid. The structure includes bringing the membrane into close contact with each other.
本発明はホログラム、特に反射型ホログラムの作成方法
（特に露光方法）に関する。The present invention relates to a method for creating a hologram, particularly a reflection hologram (particularly an exposure method).
（従来の技術）
従来の典型的な反射型ホログラムの作成方法を第３図に
示す。(Prior Art) A typical conventional method for creating a reflection hologram is shown in FIG.
第３図において、ホログラム乾板１１−感光材料１５を
透明基板１３（ガラス板あるいはアクリル板等）の片面
上に塗布したもの−の両面からレーザ光を照射して干渉
露光する。In FIG. 3, a hologram dry plate 11 (a photosensitive material 15 coated on one side of a transparent substrate 13 (glass plate, acrylic plate, etc.)) is irradiated with laser light from both sides to perform interference exposure.
第３図において、便宜上、ホログラム乾板ｌｌの表面側
（感光膜１５を塗布した側）からの入射作成光を物体波
０、裏面側からの作成光を参照波Ｒとする。この時、ホ
ログラム乾板の表裏面から入射した光は夫々反対側の面
の裏面により僅かに反射される（０’ 、 Ｒ”）。In FIG. 3, for convenience, the incident creating light from the front side (the side coated with the photoresist film 15) of the hologram dry plate 11 is assumed to be object wave 0, and the creating light from the back side is assumed to be reference wave R. At this time, the light incident on the front and back surfaces of the hologram dry plate is slightly reflected by the opposite back surface (0', R'').
〔発明が解決しようとする課題］
しかるに、上記の反射光０”、Ｒ”の作用により作成し
たホログラムの品質（特性）が低下するという問題があ
る。即ち、所望のホログラムは物体波Ｏと参照波Ｒとの
干渉により作成されるが、それ以外に、例えば、０とＲ
ｏあるいはＲとＯ゛との干渉により望ましからざるホロ
グラムが多重露光されてしまう。これが、ホログラムの
再生時にノイズ光を発生する。これが、ホログラムにノ
イズが乗ってしまうという現象である。[Problems to be Solved by the Invention] However, there is a problem in that the quality (characteristics) of the created hologram deteriorates due to the effect of the above-mentioned reflected lights 0'' and R''. That is, the desired hologram is created by the interference between the object wave O and the reference wave R, but in addition to that, for example, 0 and R
Due to interference between o or R and O', undesirable holograms are exposed multiple times. This generates noise light when the hologram is reproduced. This is a phenomenon in which noise is added to the hologram.
本発明の目的はこのようなノイズの発生を抑制した反射
型ホログラムの作成方法を提供するものである。An object of the present invention is to provide a method for creating a reflection hologram that suppresses the generation of such noise.
上記目的を達成するために、本発明によれば、基板の一
面に感光膜を塗布したホログラム乾板の両面からレーザ
光を照射して感光膜を干渉露光する際に、ホログラム乾
板の感光膜とは反対側の面に反射防止膜を形成すると共
に、ホログラム乾板の感光膜面上にマツチング液を介し
て反射防止膜付き透明板を密着させることを構成上の特
徴とする。In order to achieve the above object, according to the present invention, when the photoresist film is subjected to interference exposure by irradiating laser light from both sides of a hologram dry plate coated with a photoresist film on one side of the substrate, the photoresist film of the hologram dry plate is The structure is characterized in that an antireflection film is formed on the opposite surface, and a transparent plate with an antireflection film is brought into close contact with the photoresist film surface of the hologram dry plate via a matching liquid.
裏面側の反射防止膜は表面側からの入射光の反射を防止
し、また、表面側の反射防止膜は裏面側からの入射光の
反射を防止する。その結果、反射光による干渉は防止さ
れ、それに起因するノイズの発生は防止される。The anti-reflection film on the back side prevents reflection of incident light from the front side, and the anti-reflection film on the front side prevents reflection of incident light from the back side. As a result, interference due to reflected light is prevented, and noise caused by it is prevented from occurring.
尚、感光材層上に反射防止膜を直接形成することが技術
的に困難なため、マツチング液を介して反射防止膜を密
着させる。Note that since it is technically difficult to directly form an antireflection film on the photosensitive material layer, the antireflection film is brought into close contact with the photosensitive material layer using a matting liquid.
〔実施例］ 以下、本発明の実施例を図面に従い詳細に説明する。〔Example] Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の基本構想を示すものである。FIG. 1 shows the basic concept of the present invention.
本発明の一実施例によれば、ホログラム乾板１１（透明
基板１３と感光膜１５）の裏面側には露光に使用するレ
ーザ光の波長に合わせた反射防止膜（ＡＲココ−ィング
）２１が形成される。即ち、反射防止膜２１は当該波長
のレーザ光の透過率を向上させ反射光成分を低下させる
。According to one embodiment of the present invention, an anti-reflection coating (AR coating) 21 is formed on the back side of the hologram dry plate 11 (transparent substrate 13 and photoresist film 15) in accordance with the wavelength of the laser beam used for exposure. be done. That is, the antireflection film 21 improves the transmittance of laser light of the wavelength and reduces the reflected light component.
原理的には、ホログラム乾板の表面あるいは裏面での反
射は屈折率が変化する界面で発生する。In principle, reflection on the front or back surface of a hologram dry plate occurs at an interface where the refractive index changes.
即ち、光がガラス等を透過する時、ガラス表面で反射が
起きる。これを防止するために、ガラス表面に反射防止
膜を施す方法が従来から知られている。この反射防止膜
はガラスを例にとると、空気中からガラス中へ光が入る
ときだけでなく、ガラス中から空気中へ光が出る時も同
様の効果が得られる。That is, when light passes through glass or the like, reflection occurs on the glass surface. In order to prevent this, a method of applying an antireflection film to the glass surface is conventionally known. Taking glass as an example, this anti-reflection film provides the same effect not only when light enters the glass from the air, but also when light exits from the glass into the air.
第２図は透過型ホログラムの作成方法を示す。FIG. 2 shows a method for creating a transmission hologram.
透過型ホログラムの場合、物体光０と参照光Ｒを共にホ
ログラム乾板の表面側から照射するため、ホログラム乾
板裏面での反射を防止する７’、： メ４：・通常、ホ
ログラム乾板の裏面、即ちガラス面に、露光に用いるレ
ーザ光の波長を吸収する色の塗料（バックコーティング
）を予め露光前に塗布しておく。In the case of a transmission type hologram, since both the object beam 0 and the reference beam R are irradiated from the front side of the hologram dry plate, reflection on the back side of the hologram dry plate is prevented. Before exposure, a paint (back coating) of a color that absorbs the wavelength of the laser light used for exposure is applied to the glass surface.
しかしながら、反射型ホログラムの場合には、前述の如
くホログラム乾板両面からレーザ光を照射するためガラ
ス面にバックコーティングをすることが出来ない。何故
なら、ガラス面にバックコーティングをすると、ガラス
面側からの入射光が内部に入らず吸収されてしまい、干
渉露光させることが出来ないからである。However, in the case of a reflection hologram, as described above, the laser beam is irradiated from both sides of the hologram dry plate, so it is not possible to back coat the glass surface. This is because if the glass surface is back-coated, the incident light from the glass surface will not enter the interior and will be absorbed, making interference exposure impossible.
その為、本発明においては、バックコーティングの代わ
りに、反射防止膜２１をガラス裏面に付着する。但し、
感光材１５をガラス基板１３に塗布した後に反射防止膜
を付すことは技術的に困難であるため、予め一方の面（
感光膜１５と反対側の面）に反射防止膜付
用意する。Therefore, in the present invention, an antireflection film 21 is attached to the back surface of the glass instead of the back coating. however,
Since it is technically difficult to apply an antireflection film after applying the photosensitive material 15 to the glass substrate 13, one surface (
An antireflection film is provided on the surface opposite to the photoresist film 15.
更に、反射型ホログラムでは感光ｌ１１１５の表面もガ
ラス裏面側から照射したレーザ光に対しては裏面となり
、そこで反射が起きる。従って、感光膜１５の表面にも
反射防止膜を施す必要がある。Furthermore, in the reflection type hologram, the surface of the photosensitive layer 1115 also becomes the back surface for the laser beam irradiated from the back side of the glass, and reflection occurs there. Therefore, it is necessary to apply an antireflection film to the surface of the photoresist film 15 as well.
しかしながら、感光膜１５の上面に直接反射防止膜を付
けることは出来ない。そこで、本発明によれば、感光膜
１５上には反射防止膜２５を有するガラス板等の透明板
２７がマツチング液２３を介して密着される。マツチン
グ液としては、例えば水あるいは流動パラフィン等が挙
げられる。基本的には、マツチング液は感光材１５を侵
さない溶剤で且つ屈折率が感光材１５に等しいかそれに
近似したものであればよい。つまり、マツチング液２３
は反射防止膜２５と感光膜１５とを光学的に繋ぐもので
屈折率に関する限り感光膜１５の一部とみなせる。However, it is not possible to directly apply an antireflection film to the upper surface of the photoresist film 15. Therefore, according to the present invention, a transparent plate 27 such as a glass plate having an anti-reflection film 25 is closely attached to the photoresist film 15 via a matching liquid 23 . Examples of the matching liquid include water and liquid paraffin. Basically, the matching liquid may be any solvent as long as it does not attack the photosensitive material 15 and has a refractive index equal to or close to that of the photosensitive material 15. In other words, matching liquid 23
2 optically connects the antireflection film 25 and the photoresist film 15, and can be regarded as a part of the photoresist film 15 as far as the refractive index is concerned.
ガラス板２７およびマツチング液２３はホログラムの露
光完了後に除去される。Glass plate 27 and matching liquid 23 are removed after exposure of the hologram is completed.
〔発明の効果］
以上に記載した通り、本発明によれば、ホログラム乾板
の裏面側（入射方向と逆側の面）でのホログラム作成光
の反射が防止され、反射光と作成光との干渉によるノイ
ズホログラムの生成が有効に防止される。[Effects of the Invention] As described above, according to the present invention, reflection of the hologram creation light on the back side of the hologram dry plate (surface opposite to the incident direction) is prevented, and interference between the reflected light and the creation light is prevented. This effectively prevents the generation of noise holograms.
第１図は本発明に係るホログラム作成方法の基本構想を
示す図、第２図は透過型ホログラムの作成方法を示す図
、第３図はホログラム露光時のノイズの発生状況を説明
する図。
１１・・・ホログラム乾板、 １３・・・透明基板、
１５・・・感光材、 ２３・・・マツチング
液、２Ｌ ２５・・・反射防止膜。FIG. 1 is a diagram showing the basic concept of a hologram creation method according to the present invention, FIG. 2 is a diagram showing a transmission hologram creation method, and FIG. 3 is a diagram illustrating how noise is generated during hologram exposure. 11... Hologram dry plate, 13... Transparent substrate,
15... Photosensitive material, 23... Matching liquid, 2L 25... Antireflection film.
Claims (1)
ログラム乾板（１１）の両面からレーザ光を照射して感
光膜を干渉露光する際に、ホログラム乾板の感光膜とは
反対側の面に反射防止膜（２１）を形成すると共に、ホ
ログラム乾板の感光膜面上にマッチング液（２３）を介
して反射防止膜（２５）付きの透明板（２７）を密着さ
せることを特徴とするホログラムの作成方法。1. When performing interference exposure on the photoresist film by irradiating laser light from both sides of the hologram dry plate (11), which has a photoresist film (15) coated on one side of the substrate (13), It is characterized in that an anti-reflection film (21) is formed on the surface, and a transparent plate (27) with an anti-reflection film (25) is brought into close contact with the photoresist film surface of the hologram dry plate via a matching liquid (23). How to create a hologram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29363788A JPH02140787A (en) | 1988-11-22 | 1988-11-22 | Hologram generating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29363788A JPH02140787A (en) | 1988-11-22 | 1988-11-22 | Hologram generating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02140787A true JPH02140787A (en) | 1990-05-30 |
Family
ID=17797289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29363788A Pending JPH02140787A (en) | 1988-11-22 | 1988-11-22 | Hologram generating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02140787A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05181400A (en) * | 1991-05-31 | 1993-07-23 | Hughes Aircraft Co | Protected light sensitive recording film |
| US5313317A (en) * | 1991-10-09 | 1994-05-17 | Nippondenso Co., Ltd. | Hologram |
| US5453338A (en) * | 1992-03-31 | 1995-09-26 | Dai Nippon Printing Co., Ltd. | Hologram and method of and apparatus for producing the same |
| US5633100A (en) * | 1991-11-27 | 1997-05-27 | E. I. Du Pont De Nemours And Company | Holographic imaging using filters |
| US5648857A (en) * | 1994-02-18 | 1997-07-15 | Nippondenso Co., Ltd. | Manufacturing method for hologram which can prevent the formation of ghant holograms due to noise light |
-
1988
- 1988-11-22 JP JP29363788A patent/JPH02140787A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05181400A (en) * | 1991-05-31 | 1993-07-23 | Hughes Aircraft Co | Protected light sensitive recording film |
| JP2505348B2 (en) * | 1991-05-31 | 1996-06-05 | ヒューズ・エアクラフト・カンパニー | Protected photosensitive recording film |
| US5313317A (en) * | 1991-10-09 | 1994-05-17 | Nippondenso Co., Ltd. | Hologram |
| US5604611A (en) * | 1991-10-09 | 1997-02-18 | Nippondenso Co., Ltd. | Hologram |
| US5633100A (en) * | 1991-11-27 | 1997-05-27 | E. I. Du Pont De Nemours And Company | Holographic imaging using filters |
| US5453338A (en) * | 1992-03-31 | 1995-09-26 | Dai Nippon Printing Co., Ltd. | Hologram and method of and apparatus for producing the same |
| US5660954A (en) * | 1992-03-31 | 1997-08-26 | Dai Nippon Printing Co., Ltd. | Hologram and method of and apparatus for producing the same |
| US5985490A (en) * | 1992-03-31 | 1999-11-16 | Dai Nippon Printing Co., Ltd. | Hologram and method of and apparatus for producing the same |
| US6291109B1 (en) | 1992-03-31 | 2001-09-18 | Dai Nippon Printing Co., Ltd. | Hologram and method of and apparatus for producing the same |
| US5648857A (en) * | 1994-02-18 | 1997-07-15 | Nippondenso Co., Ltd. | Manufacturing method for hologram which can prevent the formation of ghant holograms due to noise light |
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