JP2000019936A - Manufacture of hologram and apparatus therefor - Google Patents
Manufacture of hologram and apparatus thereforInfo
- Publication number
- JP2000019936A JP2000019936A JP10190311A JP19031198A JP2000019936A JP 2000019936 A JP2000019936 A JP 2000019936A JP 10190311 A JP10190311 A JP 10190311A JP 19031198 A JP19031198 A JP 19031198A JP 2000019936 A JP2000019936 A JP 2000019936A
- Authority
- JP
- Japan
- Prior art keywords
- hologram
- light
- master hologram
- recorded
- interference fringes
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、オーナメント、エ
ンブレムなどの３次元ホログラム、ヘッドアップディス
プレイ、ハイマウントストップランプなどに応用される
ホログラフィック光学素子を大量に、しかも連続的に作
製できる方法と装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for continuously producing a large number of holographic optical elements applied to three-dimensional holograms such as ornaments and emblems, head-up displays, and high-mount stop lamps. About.
【０００２】[0002]
【従来技術】ホログラムを大量にしかも連続的に作製す
る方法、装置として感光材料を、表面が反射面になって
いる回転ドラムに密着させた状態で移動させながら、感
光材料に線状に広がった光を入射し、感光材料を透過す
る光と回転ドラムの表面で反射した光とにより感光材料
上に体積反射型のホログラフィックミラーを作製する方
法と装置が特開平５−５３４９２号に公開されている。2. Description of the Related Art As a method and an apparatus for continuously producing a large amount of holograms, a photosensitive material is spread linearly on a photosensitive material while moving the photosensitive material in close contact with a rotating drum having a reflective surface. Japanese Patent Application Laid-Open No. 5-53492 discloses a method and an apparatus for producing a holographic mirror of a volume reflection type on a photosensitive material using light incident on the photosensitive material and light reflected on the surface of a rotating drum. I have.
【０００３】また、本出願人もマスターホログラムが巻
かれた回転ドラムに感光性フィルムを密着した状態で連
続的に露光する方法と装置を特開平７−２３９４１６号
として出願している。The applicant of the present invention has also applied for a method and an apparatus for continuously exposing a photosensitive film to a rotating drum on which a master hologram is wound while keeping the photosensitive film in close contact therewith, as Japanese Patent Application Laid-Open No. Hei 7-239416.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、いずれ
も光学ミラーとしての露光方法と装置であり、３次元の
立体像などが記録されたホログラムを露光することにつ
いては開示されていない。 まして、再生において照明
光の入射角を拡げたり、３次元のホログラム像の視域を
拡げることについては全く示唆がない。However, all of them are an exposure method and apparatus as an optical mirror, and there is no disclosure of exposing a hologram on which a three-dimensional stereoscopic image or the like is recorded. Furthermore, there is no suggestion at all in expanding the incident angle of illumination light or expanding the viewing range of a three-dimensional hologram image in reproduction.
【０００５】本発明はこのような点に鑑みてなされたも
のであり、３次元の立体像が記録されたホログラムを再
生するとき広い範囲に再生用光源を配置できるようにす
るとともに、視域を拡げたホログラムを連続的に量産で
きる製造方法と装置を提供する。[0005] The present invention has been made in view of such a point, and when reproducing a hologram in which a three-dimensional stereoscopic image is recorded, it is possible to arrange a reproduction light source in a wide range and to increase a viewing area. Provided is a manufacturing method and apparatus capable of continuously mass-producing an expanded hologram.
【０００６】[0006]
【課題を解決するための手段】本発明は、マスターホロ
グラムを回転ドラムに密着し、感光材料をマスターホロ
グラムに密着させて反射ホログラムを連続的に作製する
方法において、マスターホログラムは、物体光と、入射
角が連続的に異なる参照光とによって形成される干渉縞
を多重に記録したホログラムとするとともに、感光材料
に帯状に広がった光を入射させることによって、感光材
料を透過した光とマスターホログラムで回折した光とが
形成する干渉縞を感光材料の中に記録するようにしたこ
とを特徴とする。According to the present invention, there is provided a method for continuously producing a reflection hologram by closely adhering a master hologram to a rotating drum and adhering a photosensitive material to the master hologram. A hologram in which the interference fringes formed by the reference light having continuously different incident angles is recorded in a multiplex manner, and the light transmitted in the photosensitive material and the master hologram are formed by making the light spread in a band shape incident on the photosensitive material. An interference fringe formed by the diffracted light is recorded in a photosensitive material.
【０００７】また、マスターホログラムは、物体光と参
照光として入射角がαの平行光とにより干渉縞を形成
し、参照光の入射角を逐次変えてその都度干渉縞を形成
し、入射角βまでほぼ連続的に参照光を変化させて形成
された多重干渉縞を記録したものであることを特徴とす
る。In the master hologram, interference fringes are formed by object light and parallel light having an incident angle α as reference light, and the incident angle of the reference light is sequentially changed to form interference fringes each time. It is characterized by recording multiple interference fringes formed by changing the reference beam almost continuously up to this point.
【０００８】また、作製装置としては、物体光と、入射
角が連続的に異なる参照光とによって形成される干渉縞
が多重に記録されたマスターホログラムを密着させた回
転ドラムと、感光性フィルムを前記回転ドラム上のマス
ターホログラムに密着させながら回転ドラムの回転速度
に同期して移動させる移動手段と、前記感光性フィルム
に帯状に広がったレーザー光を照射するレーザー発振器
を少なくとも具備するようにしたことを特徴とする。[0008] Further, as a manufacturing apparatus, a rotating drum in which a master hologram in which interference fringes formed by object light and reference light having successively different incident angles are multiplexly recorded, and a photosensitive film are provided. At least a moving means for moving the photosensitive film in synchronization with the rotation speed of the rotating drum while being in close contact with a master hologram on the rotating drum, and a laser oscillator for irradiating the photosensitive film with a laser beam spread in a band shape. It is characterized by.
【０００９】本発明によれば、マスターホログラムは回
転ドラムに密着し、感光材料をマスターホログラムに密
着させて、マスターホログラムと感光性フィルムを移動
させながら、レーザー発振器からレーザー光を照射する
ので、レーザー発振器から感光性フィルムに入射した参
照光と、この参照光がマスターホログラムによって回折
した物体光が形成する干渉縞を連続的に記録することが
できるだけでなく、マスターホログラムを、物体光と、
入射角が連続的に異なる参照光とによって形成される干
渉縞を多重に記録した反射ホログラムとすることによ
り、感光性フィルムに記録された反射ホログラムを参照
光の方向から白色光などで再生すると、反射ホログラム
の回折により元の物体または実像のあった位置に立体像
などを再生することができる。According to the present invention, since the master hologram is in close contact with the rotating drum, the photosensitive material is in close contact with the master hologram, and the master hologram and the photosensitive film are moved, the laser beam is emitted from the laser oscillator. Not only can the reference light incident on the photosensitive film from the oscillator and the interference fringes formed by the object light obtained by diffracting the reference light by the master hologram be continuously recorded, but also the master hologram can be
When the reflection hologram recorded on the photosensitive film is reproduced with white light or the like from the direction of the reference light, by making the reflection hologram recorded on the photosensitive film a multiplex recording of interference fringes formed by the reference light having a continuously different incident angle, By the diffraction of the reflection hologram, a three-dimensional image or the like can be reproduced at the position where the original object or the real image was.
【００１０】この場合に参照光はαからβまでの入射角
度の参照光で干渉縞が記録されているので、入射角がこ
の範囲の照明光で立体像などを再生することができ、再
生用光源の位置は特定の位置でなく、αからβまでの広
い範囲のどこにおいても再生することができる。In this case, since the interference fringes are recorded with the reference light having an incident angle from α to β, a three-dimensional image or the like can be reproduced with the illumination light having the incident angle in this range. The position of the light source is not a specific position but can be reproduced anywhere in a wide range from α to β.
【００１１】また、逆に元の参照光に相当する照明光に
よって再生される像が視認できる位置に再生用光源を配
置すると、元の参照光の方向に立体像が回折されるが、
参照光は特定の方向でなく、αからβまでの広い範囲な
ので、再生像の視域が大幅に拡大される。On the other hand, if the reproducing light source is arranged at a position where the image reproduced by the illumination light corresponding to the original reference light can be visually recognized, a three-dimensional image is diffracted in the direction of the original reference light.
Since the reference light is not in a specific direction but in a wide range from α to β, the viewing area of the reproduced image is greatly expanded.
【００１２】また、感光性フィルムには入射角が異なる
多数の参照光による干渉縞が記録されるが、それらはロ
ールが回転しながら記録されるもので、同時に記録され
ることはないから互いに干渉することもない。In addition, interference fringes due to a large number of reference beams having different incident angles are recorded on the photosensitive film, but these are recorded while the roll is rotating. Nothing to do.
【００１３】[0013]
【発明の実施の形態】（マスターホログラムの作製）感
材が塗布された基板フィルムなどと実施例に示すような
立体像などが記録されたフレネルホログラムを対向配置
し、フレネルホログラムにレーザー光源から参照光を照
射し、基板フィルムにはフレネルホログラムとは反対側
の入射角αの角度で基板全体に平行光を照射すると、フ
レネルホログラムによって再生された実像を物体光とし
て入射角αの平行光を参照光として干渉縞が基板フィル
ムに記録される。次いで感光性フィルムへの参照光の入
射角を少しずつ変えながら物体光は固定にして順次干渉
縞を記録することにより多数の干渉縞が記録されたマス
ターホログラムを得る。DESCRIPTION OF THE PREFERRED EMBODIMENTS (Preparation of master hologram) A substrate film coated with a photosensitive material and a Fresnel hologram on which a three-dimensional image or the like is recorded as shown in the embodiment are arranged to face each other, and the Fresnel hologram is referenced from a laser light source. When light is applied and the substrate film is irradiated with parallel light on the entire substrate at an angle of incidence α opposite to the Fresnel hologram, the real image reproduced by the Fresnel hologram is used as object light to refer to the parallel light at the angle of incidence α. Interference fringes are recorded as light on the substrate film. Next, the object light is fixed while the incident angle of the reference light to the photosensitive film is gradually changed, and the interference fringes are sequentially recorded to obtain a master hologram on which a large number of interference fringes are recorded.
【００１４】この場合にフレネルホログラムにスリット
を密着させて露光するとマスターホログラムには奥行き
のある立体像が記録される。また、フレネルホログラム
によらず、マスターホログラムが記録される基板フィル
ムの参照光とは反対側の実像の位置に物体そのものをお
いて物体にレーザー光を照射して、その反射光を物体光
としてもよい。In this case, when the Fresnel hologram is exposed with a slit in close contact therewith, a deep stereoscopic image is recorded on the master hologram. Regardless of the Fresnel hologram, the object itself can be irradiated with laser light at the position of the real image opposite to the reference light of the substrate film on which the master hologram is recorded, and the reflected light can be used as object light. Good.
【００１５】また、マスターホログラムに記録される像
は３次元の立体像であると効果的であるが、２次元の平
面像あるいはヘッドアップディスプレイ用のコンバイナ
ーなどに使用できるように無地の像を記録してミラーと
して使用するものでも勿論よい （感光性フィルムへのコピー）このようにして得られた
マスターホログラムを回転ドラムに密着させた後、感光
性フィルムを回折ドラム上のマスターホログラムに押圧
力を加えながら矢印方向にロールなどで巻き取りなが
ら、レーザー光源からシリンドリカルレンズを介して幅
広の平行光を照射すると連続的にマスターホログラムの
記録された立体像などを感光性フィルムにコピーするこ
とができる。It is effective that the image recorded on the master hologram is a three-dimensional three-dimensional image, but a two-dimensional plane image or a solid image is recorded so that it can be used for a combiner for a head-up display. (Copying to photosensitive film) After the master hologram thus obtained is brought into close contact with the rotating drum, the photosensitive film is pressed against the master hologram on the diffraction drum. By irradiating wide parallel light from a laser light source via a cylindrical lens while winding the film with a roll or the like in the direction of the arrow while adding, a stereoscopic image or the like recorded on the master hologram can be continuously copied onto a photosensitive film.
【００１６】このときマスターホログラムは長い基板フ
ィルムを用意して複数枚同じものを前記の方法により作
製しておいたものを回転ドラムに巻き付けると、効率よ
く連続して大量にコピーホログラムを作製することがで
きる。At this time, when a master hologram is prepared by preparing a long substrate film and a plurality of same holograms manufactured by the above-described method are wound around a rotary drum, a large number of copy holograms can be efficiently and continuously manufactured. Can be.
【００１７】なお、レーザー発振器からのレーザー光を
マスターホログラム上の感光性フィルムに照射する場合
に、シリンドリカルレンズを使用して幅広の平行光にす
ると光を効率よく利用できるので好ましいが、凸レンズ
あるいは凹面鏡などにより平行光としてもよい。また、
入射角が回転ドラムの幅方向で一定であれば必ずしも平
行光でなくとも発散光を照射してもよい。When irradiating the photosensitive film on the master hologram with laser light from a laser oscillator, it is preferable to use a cylindrical lens to make wide parallel light because the light can be used efficiently, but a convex lens or a concave mirror is preferred. For example, parallel light may be used. Also,
As long as the angle of incidence is constant in the width direction of the rotating drum, divergent light may be applied instead of parallel light.
【００１８】[0018]
【実施例】以下、図面を参照しながら、本発明を詳細に
説明する。図１〜図３は、それぞれ本発明のマスターホ
ログラムを作製するときの光学系を示す要部概略図、コ
ピーホログラムを作製する装置を示す要部概略図、およ
び再生時の光学系を示す要部概略図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIGS. 1 to 3 are schematic views of a main part showing an optical system for producing a master hologram of the present invention, a schematic view of a main part showing an apparatus for producing a copy hologram, and a main part showing an optical system at the time of reproduction. It is a schematic diagram.
【００１９】立体像が記録されたホログラムを作製する
場合について例示する。 （マスターホログラムの作製）例えば幅が３１０ｍｍ、
長さが５００ｍｍの樹脂フィルムに厚さ２５μｍのフォ
トポリマーポリマー、例えばＯｍｎｉＤｅｘ−３５２
（ＤｕＰｏｎｔ製）をマスターホログラム用乾板１’と
して、図１に示すように、予め立体像が５１４．５ｎｍ
のレーザー光（緑色）によって記録されたフレネルホロ
グラム２と、該フレネルホログラムに密着された中心部
分に２ｍｍ程度の細長いスリットが形成されたスリット
板３を密着してセッティングした後、例えば図示しない
アルゴンレーザー発振器から５１４．５ｎｍのレーザー
光を発振させて、図示しないビームスプリッタ、ミラ
ー、凸レンズなどを経由して２分割させて、一方の光を
平行な参照光Ｒ１としてフレネルホログラム２に照射
し、他方の光を参照光Ｒ２として入射角αでマスターホ
ログラム用乾板１’に照射すると、フレネルホログラム
２の再生実像（物体光）とマスターホログラム用乾板へ
の参照光（入射角α）によってマスターホログラム用乾
板には干渉縞が記録される。A case where a hologram on which a three-dimensional image is recorded will be described. (Production of master hologram) For example, the width is 310 mm,
Photopolymer polymer having a thickness of 25 μm on a resin film having a length of 500 mm, for example, OmniDex-352
(DuPont) was used as a master hologram dry plate 1 ′, as shown in FIG.
After the Fresnel hologram 2 recorded by the laser light (green) and the slit plate 3 having an elongated slit of about 2 mm formed in the center portion closely adhered to the Fresnel hologram, and set, for example, an argon laser (not shown) A laser beam of 514.5 nm is oscillated from an oscillator and split into two via a beam splitter, a mirror, a convex lens and the like (not shown), and one of the two beams is irradiated on the Fresnel hologram 2 as parallel reference light R1, and the other is irradiated on the other. When the light is irradiated as the reference light R2 onto the master hologram dry plate 1 'at an incident angle α, the reproduced real image of the Fresnel hologram 2 (object light) and the reference light (incident angle α) to the master hologram dry plate are applied to the master hologram dry plate. Indicates an interference fringe.
【００２０】なお、マスターホログラム用乾板１’に照
射される参照光Ｒ２は入射角がαからβまで変えられる
ように光学系の最後に回動自在であってマスターホログ
ラム用乾板より大きな平面鏡（図示しない）を配置す
る。The reference beam R2 applied to the master hologram dry plate 1 'is rotatable at the end of the optical system so that the incident angle can be changed from α to β, and is larger than a flat mirror (not shown). No).
【００２１】次いで平面鏡を回動させ参照光Ｒ２の入射
角を少しだけ小さくして、参照光Ｒ１とにより同様にマ
スターホログラム用乾板に干渉縞を記録する。以下、平
面鏡を少しずつ回動させながら、同様の手順により干渉
縞を記録し、参照光Ｒ２の入射角βまで変えて露光する
と、多数の互いに干渉しない干渉縞をマスターホログラ
ムに記録することができる。Then, the plane mirror is rotated to slightly reduce the incident angle of the reference beam R2, and the interference fringes are similarly recorded on the master hologram dry plate with the reference beam R1. Hereinafter, while rotating the plane mirror little by little, the interference fringes are recorded by the same procedure, and when the exposure is performed while changing the incident angle β of the reference light R2, a large number of interference fringes that do not interfere with each other can be recorded on the master hologram. .
【００２２】その後通常の現像処理をしてマスターホロ
グラム１を得る。このようにして実際には同じマスター
ホログラムを多数枚作製しておく。 （感光性フィルムへのコピー）多数枚のマスターホログ
ラム１を別のフィルムなどに連続して貼付け、これを図
２に示すように回転ドラム４に密着させ、フィルムの始
端と終端を結び、エンドレスフィルムとしておく。Thereafter, the master hologram 1 is obtained by performing a normal developing process. In this way, a large number of the same master holograms are actually prepared. (Copying to photosensitive film) A large number of master holograms 1 are successively stuck on another film and the like, and this is brought into close contact with a rotating drum 4 as shown in FIG. And keep it.
【００２３】この回転ドラム４のマスターホログラム１
の上に、ＰＥＴフィルムなどにフォトポリマーなどの感
材が塗布された感光性フィルム５’を押圧力を加えなが
ら、密着させドラム６で巻き取るようにする。The master hologram 1 of the rotating drum 4
A photosensitive film 5 ′ on which a photosensitive material such as a photopolymer is applied on a PET film or the like is brought into close contact with the photosensitive film 5 ′ while applying a pressing force, and is wound around the drum 6.
【００２４】このとき、感光性フィルム５’は、キシレ
ン液などのインデックスマッチング液７中に回動自在に
浸漬されたローラー８によってインデックスマッチング
液が付着した状態でマスターホログラム１と密着され
る。At this time, the photosensitive film 5 'is brought into close contact with the master hologram 1 in a state where the index matching liquid is adhered by a roller 8 rotatably immersed in an index matching liquid 7 such as a xylene liquid.
【００２５】５１４．５ｎｍの光（緑色）を発信するレ
ーザー発振器９から凸レンズ１０、シリンドリカルレン
ズ１１を介して幅方向に発散し、縦方向にはコリメート
されたレーザー光を、マスターホログラム上に密着した
感光性フィルム５’に照射すると、感光性フィルム５’
にマスターホログラム１と同じホログラムが連続して記
録される。A laser beam 9 that emits light (green) of 514.5 nm diverges in the width direction via a convex lens 10 and a cylindrical lens 11 and a laser beam collimated in the vertical direction is brought into close contact with the master hologram. When the photosensitive film 5 'is irradiated, the photosensitive film 5'
And the same hologram as the master hologram 1 is continuously recorded.
【００２６】このようにして得られたホログラムの一つ
である５に、図３に示すように入射角がαからβまでの
入射光、すなわち広い範囲から光を入射すれば目の位置
で再生像１２を視認することができるだけでなく、逆に
再生像が視認できる任意の場所からホログラム５に光を
入射させると再生像は、αからβで示される直線の範囲
内で視認することができる。In FIG. 3, one of the holograms obtained in this manner, as shown in FIG. 3, if the incident light has an incident angle of α to β, that is, if light is incident from a wide range, it is reproduced at the eye position. When light is incident on the hologram 5 from any place where the reproduced image can be visually recognized, the reproduced image can be visually recognized within the range of a straight line indicated by α to β. .
【００２７】[0027]
【発明の効果】本発明によれば、広い範囲に再生用光源
を置いて再生することができるとともに、広い視域でも
視認することができるマスターホログラムと同等の特性
を有するホログラムを大量にしかも迅速に作製すること
ができるAccording to the present invention, a large number of holograms having the same characteristics as a master hologram which can be reproduced by placing a reproduction light source in a wide range and which can be visually recognized even in a wide viewing area can be produced in a large amount and quickly. Can be made
【図１】本発明のマスターホログラムを作製するときの
光学系を示す要部概略図である。FIG. 1 is a schematic view of a main part showing an optical system when producing a master hologram of the present invention.
【図２】本発明のコピーホログラムを作製する装置を示
す要部概略図である。FIG. 2 is a schematic view of a main part showing an apparatus for producing a copy hologram of the present invention.
【図３】本発明のホログラムの再生時の光学系を示す要
部概略図である。FIG. 3 is a schematic diagram of a main part showing an optical system at the time of reproducing a hologram of the present invention.
１ マスターホログラム １’ マスターホログラム用乾板 ２ フレネルホログラム ３ スリット板 ４ 回転ドラム ５’ 感光性フィルム ５ コピーホログラム ６ 巻き取りドラム ７ インデックスマッチング液 ８ ローラー ９ レーザー発振器 １０ 凸レンズ １１ シリンドリカルレンズ １２ 再生像 Reference Signs List 1 master hologram 1 'dry plate for master hologram 2 Fresnel hologram 3 slit plate 4 rotating drum 5' photosensitive film 5 copy hologram 6 winding drum 7 index matching liquid 8 roller 9 laser oscillator 10 convex lens 11 cylindrical lens 12 reproduced image
フロントページの続き Ｆターム(参考） 2H049 CA22 CA28 2K008 AA00 AA14 AA17 BB04 BB06 DD13 EE04 FF07 GG01 HH01 HH02 HH07 HH19 HH25 Continued on the front page F term (reference) 2H049 CA22 CA28 2K008 AA00 AA14 AA17 BB04 BB06 DD13 EE04 FF07 GG01 HH01 HH02 HH07 HH19 HH25
Claims (3)
し、感光材料をマスターホログラムに密着させて反射ホ
ログラムを連続的に作製する方法において、マスターホ
ログラムは、物体光と、入射角が連続的に異なる参照光
とによって形成される干渉縞を多重に記録したホログラ
ムとするとともに、感光材料に帯状に広がった光を入射
させることによって、感光材料を透過した光とマスター
ホログラムで回折した光とが形成する干渉縞を感光材料
の中に記録するようにしたことを特徴とするホログラム
の作製方法。1. A method for continuously producing a reflection hologram by closely adhering a master hologram to a rotating drum and a photosensitive material to a master hologram, wherein the master hologram is different from the object light in the incident angle continuously. The interference fringes formed by the light and the hologram are recorded in a multiplexed manner, and the light that spreads in a band shape is incident on the photosensitive material, so that the light transmitted through the photosensitive material and the light diffracted by the master hologram are formed. A method for producing a hologram, wherein stripes are recorded in a photosensitive material.
して入射角がαの平行光とにより干渉縞を形成し、参照
光の入射角を逐次変えてその都度干渉縞を形成し、入射
角βまでほぼ連続的に参照光を変化させて形成された多
重干渉縞を記録したものであることを特徴とする請求項
１記載のホログラムの作製方法。2. The master hologram forms interference fringes by object light and parallel light having an incident angle of α as reference light, and sequentially changes the incident angle of the reference light to form interference fringes each time. 2. The method of manufacturing a hologram according to claim 1, wherein multiple interference fringes formed by changing the reference light almost continuously are recorded.
とによって形成される干渉縞が多重に記録されたマスタ
ーホログラムを密着させた回転ドラムと、感光性フィル
ムを前記回転ドラム上のマスターホログラムに密着させ
ながら回転ドラムの回転速度に同期して移動させる移動
手段と、前記感光性フィルムに帯状に広がったレーザー
光を照射するレーザー発振器を少なくとも具備するよう
にしたことを特徴とするホログラムの作製装置。3. A rotating drum on which a master hologram in which interference fringes formed by an object beam and a reference beam having successively different angles of incidence are recorded in a multiplex manner, and a photosensitive film are mounted on the rotating drum. A hologram characterized by comprising at least a moving means for moving in synchronization with a rotation speed of a rotary drum while being in close contact with a master hologram, and a laser oscillator for irradiating the photosensitive film with a laser beam spread in a band shape. Production equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10190311A JP2000019936A (en) | 1998-07-06 | 1998-07-06 | Manufacture of hologram and apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10190311A JP2000019936A (en) | 1998-07-06 | 1998-07-06 | Manufacture of hologram and apparatus therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000019936A true JP2000019936A (en) | 2000-01-21 |
Family
ID=16256066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10190311A Pending JP2000019936A (en) | 1998-07-06 | 1998-07-06 | Manufacture of hologram and apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000019936A (en) |
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