JPS6271884A - Cover glass for timepiece with diffraction grating - Google Patents
Cover glass for timepiece with diffraction gratingInfo
- Publication number
- JPS6271884A JPS6271884A JP21332185A JP21332185A JPS6271884A JP S6271884 A JPS6271884 A JP S6271884A JP 21332185 A JP21332185 A JP 21332185A JP 21332185 A JP21332185 A JP 21332185A JP S6271884 A JPS6271884 A JP S6271884A
- Authority
- JP
- Japan
- Prior art keywords
- diffraction grating
- cover glass
- thin film
- watch cover
- pattern
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
- G04B45/0084—Pictures or inscriptions on the case or parts thereof, attaching complete pictures
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Surface Treatment Of Glass (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、回折格子付き時計用カバーがラスに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a watch cover with a diffraction grating.
従来の技術としては、特願昭4F−!;0640に開示
されている様に、時計用カバーガラスの裏面に感光性の
レジスト塗料を塗布した後、ノ′=ターン内に回折格子
を刻んだスクリーンを前記感光性レジ・スト面に乗せ、
露光、現像を行ない、非感光部分のレジストを削除した
後、弗化水素酸等の薬品によりエツチングを行ない、時
計用カバーガラスの裏面に直接回折格子によるパターン
を形成させている。As for the conventional technology, the patent application 4F-! ;0640, after applying a photosensitive resist paint to the back surface of a watch cover glass, placing a screen with a diffraction grating carved in the no'=turns on the photosensitive resist surface;
After exposure and development to remove the resist in non-exposed areas, etching is performed with chemicals such as hydrofluoric acid to form a pattern of diffraction gratings directly on the back surface of the watch cover glass.
この従来の回折格子によるパターンが形成された時計用
カバーガラスは、裏面に微細な凹部が数多(設けられて
いるので強度劣化がある。更に、一般に時計用カバーガ
ラスは強度を上げるため強化処理が施されており、全面
の表面層に応力層が形成されているので、表面の一部分
に微細な凹部が設けら°れると応力層のバランスが(ず
れ、ある方向からの弱い力でも簡単に割れが起こる。ま
た、時計用カバーガラスの裏面に微細な凹部を数多(ケ
ミカルエツチングにより設けるので、エツチング不良に
より回折格子によるパターンが不鮮明となった場合、修
正が殆ど出来ず、時計用カバーガラスが不良品となった
。This conventional watch cover glass with a pattern formed by a diffraction grating has many minute recesses on the back side, which causes its strength to deteriorate.Furthermore, watch cover glasses are generally strengthened to increase their strength. is applied, and a stress layer is formed on the entire surface layer, so if minute recesses are made in a part of the surface, the balance of the stress layer will be shifted (shifting, and even a weak force from a certain direction can easily In addition, there are many minute recesses on the back of the watch cover glass (because they are created by chemical etching, if the pattern created by the diffraction grating becomes unclear due to poor etching, it is almost impossible to correct it, and the watch cover glass became a defective product.
本発明は上述した従来の回折格子によるパターンが形成
された時計用カバーガラスの1欠点を解決し、回折格子
から得られる虹色の干渉色の強さを自白に変化させ、か
つ任意の形状にパターン化し新[7い感覚のデザインを
提供し、さらに回折格子による時計用カバーガラスの強
度劣化の心配がなく、しかも必要に応じ修正可能な回折
格子付き時計用カバーガラスを実現することを目的とす
る。The present invention solves one of the drawbacks of the above-mentioned conventional watch cover glass patterned with a diffraction grating, and allows the intensity of the iridescent interference color obtained from the diffraction grating to be clearly changed, and can be formed into any shape. The aim is to create a watch cover glass with a diffraction grating that provides a new patterned design, eliminates the worry of strength deterioration of the watch cover glass due to the diffraction grating, and can be modified as necessary. do.
前記目的を達成するため、本発明の構成は、PVD法に
よりCr2O3,Cr、Au、Ni等の金属薄膜を時計
用カバーガラスの面上に形成し該金属薄膜の一部をフォ
トエツチングにより除去して形成した回折格子によるパ
ターンは透過率が20%以上80%以下であり、前記回
折格子の格子幅とピッチのそれぞれ1μ以上7μ以下で
あることを特徴としている。In order to achieve the above object, the present invention has a structure in which a metal thin film of Cr2O3, Cr, Au, Ni, etc. is formed on the surface of a watch cover glass by a PVD method, and a part of the metal thin film is removed by photoetching. The pattern formed by the diffraction grating is characterized in that the transmittance is 20% or more and 80% or less, and the grating width and pitch of the diffraction grating are each 1μ or more and 7μ or less.
以下、図に基づいて本発明の詳細な説明する。 Hereinafter, the present invention will be explained in detail based on the drawings.
第1図、第2図は本発明の第1実施例を示し、第1図は
時計用カバーガラスに設けた回折格子の拡大断面図で、
第2図は回折格子によるパターンを形成した時計用カバ
ーガラスの平面図である。1 and 2 show a first embodiment of the present invention, and FIG. 1 is an enlarged sectional view of a diffraction grating provided on a watch cover glass.
FIG. 2 is a plan view of a watch cover glass on which a pattern of diffraction gratings is formed.
時計用カバーガラス1の裏面(ケースに取付だ完成時計
の状態で文字板と相対する面)に、PVD法の真空蒸着
技術によりC「203からなる金属薄膜を52oXの厚
さで形成する。次に前記金属薄膜の上にフォトレジスト
膜をスピンナーにより形成後、回折格子によるパターン
が形成されたマスクを使用し、露光、現像を行ない未感
光部のフォトレジストヲ除去する。次にケミカルエツチ
ングにより不要な部分のCr2O3からなる金属薄膜を
除去し、時計用カバーガラス−1の裏面にCr2O3か
らなる金属薄膜の格子2aと微細スリット・2bからな
る回折格子2によるパターン6が形成される。薗、格子
2aは、2μ幅で2μピンチでできていて、回折格子2
の透過率が50%である。On the back surface of the watch cover glass 1 (the surface that faces the dial when the completed watch is attached to the case), a thin metal film made of C203 is formed to a thickness of 52oX using the PVD vacuum deposition technique.Next After forming a photoresist film on the metal thin film using a spinner, using a mask with a pattern formed by a diffraction grating, exposure and development are performed to remove the photoresist in the unexposed areas.Next, unnecessary photoresist is removed by chemical etching. The metal thin film made of Cr2O3 in the Cr2O3 portion is removed, and a pattern 6 is formed on the back surface of the watch cover glass 1 by a diffraction grating 2 consisting of a grating 2a of the metal thin film made of Cr2O3 and fine slits 2b. 2a is made of 2μ width and 2μ pinch, and the diffraction grating 2
The transmittance is 50%.
この様にして時計用カバーガラス1の裏面に作られ1こ
回折格子2によるパターン6は、外部からの光により回
折格子2に入った入射光が微細スリン)2bにより回折
され、その反射光が干渉することにより紅色としてキラ
キラと美しい輝きを示す。また時計用カバーガラスに数
多くの微細な凹部を設ける従来技術と異なり、時計用カ
バーガラス1の強度は回折格子2によるパターン6を形
成する前と殆ど変わらず、従来品の様な強度劣化の問題
はない。また回折格子2によるパターン3が外観品質不
良となった場合も、Cr2O3の金属薄膜を化学的方法
により時計用カバーガラス1を痛めることな(剥離する
ことができ、再度回折格子2によるパターン6を形成さ
せることができる。The pattern 6 formed by one diffraction grating 2 on the back surface of the watch cover glass 1 in this way is such that the incident light that enters the diffraction grating 2 due to external light is diffracted by the fine sulphur 2b, and the reflected light is Due to interference, it shows a beautiful sparkle as a red color. Also, unlike the conventional technology in which a watch cover glass is provided with many minute recesses, the strength of the watch cover glass 1 is almost the same as before the pattern 6 is formed by the diffraction grating 2, and there is a problem of strength deterioration as with conventional products. There isn't. Furthermore, even if the pattern 3 formed by the diffraction grating 2 has poor appearance quality, the metal thin film of Cr2O3 can be peeled off without damaging the watch cover glass 1 using a chemical method, and the pattern 6 formed by the diffraction grating 2 can be removed again. can be formed.
尚、上記実施例に於ては、金属薄膜にCr、O5、金属
薄膜形成に真空蒸着法で行なったが、金属薄膜の種類と
してCr、 Au、 N i$ ’l)使用も可能で、
金属薄膜形成方法としてPVD法のスパッタリングI?
等でも良い。また回折格子によるパターンは1時計用カ
バーガラスの表面に形成することも可能である。また時
計用カバーガラスの裏面に形成された金属薄膜の厚さを
変化させて、回折格子の透過率を20%から80%の範
囲とするのが実用上及びデザイン上良く、20%より低
(なると時刻表示が見えにく(なり、80%より高くな
ると虹色のキラキラと美しい輝きが少なくなる。また回
折格子の格子幅とピッチのそれぞれの範囲及び透過率に
よる虹色の干渉色については、格子幅が1μから7μで
ピッチが1μから7μの範囲での組合せで、透過率が2
0%から80%の場合が紅色の〒濃色として良好であっ
た。In the above example, the metal thin film was formed using Cr and O5, and the metal thin film was formed using a vacuum evaporation method, but it is also possible to use Cr, Au, or Ni as the type of metal thin film.
PVD sputtering I as a metal thin film formation method?
etc. is also fine. It is also possible to form a pattern of diffraction gratings on the surface of a watch cover glass. In addition, it is practical and design-friendly to vary the thickness of the metal thin film formed on the back surface of the watch cover glass so that the transmittance of the diffraction grating ranges from 20% to 80%, and is lower than 20% ( If it becomes higher than 80%, the beautiful rainbow-colored sparkle will decrease.Also, regarding the rainbow-colored interference color depending on the grating width and pitch range and transmittance of the diffraction grating, A combination of grating width from 1μ to 7μ and pitch from 1μ to 7μ has a transmittance of 2.
The case of 0% to 80% was good as a deep red color.
格子幅とピッチが7μより太き(なると虹色の出方が少
なくなり、どちらか一方が7μより大きくなった場合で
も虹色の出方が少なくなる。また格子幅とどノチが1μ
より小さくなると虹色の出方は良くなるが、フォトエツ
チング等の加工上の問題により、量産性は極めて薄(な
る。したがってデザイン仕様1yより格子幅、ピッチ、
透過率を任意に上記範囲より選択し、組合せて使用する
。If the grid width and pitch are thicker than 7μ, the number of rainbow colors will decrease, and even if either one is larger than 7μ, the number of rainbow colors will decrease.Also, if the grid width and pitch are 1μ
The smaller the size, the better the rainbow colors will appear, but due to processing problems such as photo-etching, mass production is extremely difficult.Therefore, the grating width, pitch,
The transmittance is arbitrarily selected from the above range and used in combination.
回折格子の格子幅とピッチの組合せの一例を下記の表1
に示す。表1は回折格子の格子幅が2μ、ピッチが2μ
の場合であり、金属被膜の材質がCr、、0.、又はC
rのときの透過率と金属薄膜の厚さの開気を示す。An example of the combination of grating width and pitch of the diffraction grating is shown in Table 1 below.
Shown below. Table 1 shows that the grating width of the diffraction grating is 2μ and the pitch is 2μ.
In this case, the material of the metal coating is Cr, 0. , or C
It shows the transmittance and the thickness of the metal thin film when r.
次に第3図は本発明の第2実施例であり、時計用カバー
ガラスに設けた回折格子と裏打印刷部の拡大断面図であ
る。Next, FIG. 3 shows a second embodiment of the present invention, and is an enlarged sectional view of a diffraction grating and a printed backing section provided on a watch cover glass.
時計用カバーガラス1の裏面に第1実施例と同様の方法
で形成されたC r 20 sからなる回折格子2によ
るパターン部に有機インキを使用し、印刷により裏打印
刷部4を形成する。An organic ink is used for the pattern portion of the diffraction grating 2 made of C r 20 s, which is formed on the back surface of the watch cover glass 1 in the same manner as in the first embodiment, and a backing printed portion 4 is formed by printing.
この様にして時計用カバーガラス1の裏面に作ちれた回
折格子2によるパターン部は、回折格子2のキラキラと
美しい輝きを示す虹色と裏打印刷部4に使用した有機イ
ンキの色との調和により、一段と新しい感覚のデザイン
表現ができる。The pattern of the diffraction grating 2 created on the back side of the watch cover glass 1 in this way is a combination of the iridescent color of the diffraction grating 2 and the color of the organic ink used for the back printing part 4. Harmony allows for a new sense of design expression.
前記以外は第1実施例とはg同様なので説明を省略する
。Other than the above, the explanation is omitted since it is the same as the first embodiment.
次に第4図は本発明の第3実施例であり、時計用カバー
ガラスに設けた回折格子と裏打金属薄膜部の拡大断面図
である。Next, FIG. 4 shows a third embodiment of the present invention, and is an enlarged sectional view of a diffraction grating and a backing metal thin film provided on a watch cover glass.
時計用カバーガラス1の裏面に第1実施例と同様の方法
で形成されたCr2O3からなる回折格子2によるパタ
ーン部に、AgやAu等の金属を使用し、PVD法の真
空蒸着技術により裏打金属薄膜部5を形成する。A metal such as Ag or Au is used for the pattern portion of the diffraction grating 2 made of Cr2O3, which is formed on the back surface of the watch cover glass 1 in the same manner as in the first embodiment, and a backing metal is formed using the vacuum evaporation technique of the PVD method. A thin film portion 5 is formed.
二の様にして時計用カバーガラス1の裏面に作られた回
折格子2によるパターン部は、回折格子2のキラキラと
美しい輝きを示す紅色が裏打金属薄膜部50反射により
一段と光り輝き、一段と宝飾性を向上すると共にデザイ
ンバリエーションの拡大が計れる。In the pattern part of the diffraction grating 2 made on the back surface of the watch cover glass 1 as shown in 2, the red color showing the sparkling and beautiful shine of the diffraction grating 2 becomes even more brilliant due to the reflection from the backing metal thin film part 50, making it even more jewel-like. As well as improving the design, design variations can be expanded.
尚、裏打金属薄膜部の形成にPVD法の真空蒸着技術で
行なったが、PVD法のスパツタリングやIPでも可能
である。また裏打金属薄膜部の形成に使用する金属は、
反射率の高い金属を使用した方がより回折格子によるパ
ターン部の虹色をキラキラと美しく輝かせることができ
る。Although the backing metal thin film portion was formed using the vacuum evaporation technique of the PVD method, sputtering or IP of the PVD method may also be used. In addition, the metal used to form the backing metal thin film part is
If a metal with a high reflectance is used, the iridescent color of the patterned portion of the diffraction grating will shine more beautifully.
なお前記以外はi1実施例と同様なので説明を省略する
。Note that other than the above, the explanation is omitted since it is the same as in the i1 embodiment.
以上の説明で明らかなように、本発明の回折格子付き時
計用カバーガラ°スは、金属薄膜にフォト二ノチング技
術により回折格子によるパターンが形成されて(・るの
で、時言」用カバーガラスの強度劣化1.′−なく、外
部からの力で簡単に割れることはない7また回折格子に
よるパターンが外観品質不良となった場合でも、金属薄
膜を化学的方法により時計用カバーガラスを痛めること
なく剥離することができるので修正が何度でも可能であ
る。また回折格子によるパターンの透過率が20%から
80%であるので時刻表示が見えな(なることもなく、
適度な虹色のキラキラと美しい輝きを示し、時計の宝飾
性を向上させ、且つ新しい感覚のブザノン?提供するこ
とができる。As is clear from the above explanation, the cover glass for a watch with a diffraction grating of the present invention has a pattern of a diffraction grating formed on a metal thin film by photo-notching technology. 1. There is no strength deterioration, and it does not easily break due to external force.7Also, even if the pattern formed by the diffraction grating has poor appearance quality, the metal thin film can be chemically coated without damaging the watch cover glass. Since it can be peeled off, corrections can be made as many times as you like.Also, the transmittance of the diffraction grating pattern is between 20% and 80%, so the time display will not be visible.
Buzanon shows a beautiful shine with moderate iridescent sparkle, improves the jewelry quality of the watch, and gives a new sensation. can be provided.
第1図、第2図:ま本発明の第1実施例を示し、第1図
は時計用カバーガラスに設けた回折格子の拡大断面図、
第2図は回折格子による〕くターンを形成した時計用カ
バーガラスの平面図、第3図は第2実施例を示し時計用
カバーガラスに設けた回折格子と裏打印刷部の拡大断面
図、第4図は第3実施例を示し時計用カバーガラスに設
けた回折格子と裏打金属薄膜部の拡大断面図である。
1・・・・・・時計用カバーガラス、
2・・・・・・回折格子、
2a・・・・・・格子、
2 b ・・・ ・・・ 微 細 ス リ ノ ト
、6・・・・・・パターン、
4・・・・・・裏打印刷部、
5・・・・・・裏打金属薄膜部。
特許出願人 シチズン時計株式会社
同 河口湖精密株式会社
代理人 弁理士 金 山 敏 彦寿τ′5 ゛ ・Figures 1 and 2: A first embodiment of the present invention is shown, and Figure 1 is an enlarged sectional view of a diffraction grating provided on a watch cover glass.
Fig. 2 is a plan view of a watch cover glass with turns formed by a diffraction grating, Fig. 3 is an enlarged cross-sectional view of the diffraction grating and backing printed portion provided on the watch cover glass, showing the second embodiment; FIG. 4 shows a third embodiment and is an enlarged sectional view of a diffraction grating and a backing metal thin film portion provided on a watch cover glass. 1...Cover glass for watches, 2...Diffraction grating, 2a...Grating, 2b...Fine slit, 6... ...Pattern, 4...Backing printed part, 5...Backing metal thin film part. Patent applicant Citizen Watch Co., Ltd. Kawaguchiko Seimitsu Co., Ltd. Agent Patent attorney Toshi Kanayama Hikohisa τ'5 ゛ ・
Claims (1)
金属薄膜を時計用カバーガラスの面上に形成し該金属薄
膜の一部をフォトエッチングにより除去して形成した回
折格子によるパターンは透過率が20%以上80%以下
であり、前記回折格子の格子幅とピッチのそれぞれが1
μ以上7μ以下であることを特徴とする回折格子付き時
計用カバーガラス。A diffraction grating pattern formed by forming a thin metal film of Cr_2O_3, Cr, Au, Ni, etc. on the surface of a watch cover glass by the PVD method and removing a part of the metal thin film by photoetching has a transmittance of 20%. 80% or less, and each of the grating width and pitch of the diffraction grating is 1
A cover glass for a watch with a diffraction grating, characterized in that the particle diameter is greater than or equal to μ and less than or equal to 7 μ.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21332185A JPS6271884A (en) | 1985-09-26 | 1985-09-26 | Cover glass for timepiece with diffraction grating |
DE19863632622 DE3632622A1 (en) | 1985-09-26 | 1986-09-25 | Watchglass with diffraction grating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21332185A JPS6271884A (en) | 1985-09-26 | 1985-09-26 | Cover glass for timepiece with diffraction grating |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6271884A true JPS6271884A (en) | 1987-04-02 |
Family
ID=16637211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21332185A Pending JPS6271884A (en) | 1985-09-26 | 1985-09-26 | Cover glass for timepiece with diffraction grating |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS6271884A (en) |
DE (1) | DE3632622A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4018092A1 (en) * | 1990-06-06 | 1991-12-12 | Bosch Gmbh Robert | Etching of pattern in or through glass layers - uses thin nickel layer directly on glass and photoresist on top of this to provide improved adhesion and etch resistance |
FR2926747B1 (en) | 2008-01-25 | 2011-01-14 | Commissariat Energie Atomique | OBJECT COMPRISING A GRAPHIC ELEMENT REPORTED ON A SUPPORT AND METHOD OF MAKING SUCH AN OBJECT |
FR2926746B1 (en) | 2008-01-29 | 2015-05-29 | Savoyet Jean Louis | METHODS AND MEANS FOR GRAPHICAL DATA CONSTITUTION, AS WELL AS THEIR PROTECTION IN TERMS OF USE AND READING AND STORAGE MODES |
FR2946435B1 (en) | 2009-06-04 | 2017-09-29 | Commissariat A L'energie Atomique | METHOD OF MANUFACTURING COLORED IMAGES WITH MICRONIC RESOLUTION BURIED IN A VERY ROBUST AND VERY PERENNIAL MEDIUM |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502977A (en) * | 1973-05-09 | 1975-01-13 | ||
CH622151B (en) * | 1977-07-15 | Hans Ulrich Klingenberg | WATCH BOX. |
-
1985
- 1985-09-26 JP JP21332185A patent/JPS6271884A/en active Pending
-
1986
- 1986-09-25 DE DE19863632622 patent/DE3632622A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE3632622A1 (en) | 1987-04-02 |
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