JP2990172B1 - Rubidium atomic oscillator - Google Patents
Rubidium atomic oscillatorInfo
- Publication number
- JP2990172B1 JP2990172B1 JP24437598A JP24437598A JP2990172B1 JP 2990172 B1 JP2990172 B1 JP 2990172B1 JP 24437598 A JP24437598 A JP 24437598A JP 24437598 A JP24437598 A JP 24437598A JP 2990172 B1 JP2990172 B1 JP 2990172B1
- Authority
- JP
- Japan
- Prior art keywords
- holder
- case
- atomic oscillator
- rubidium atomic
- cavity
- 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.)
- Expired - Lifetime
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- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
【要約】
【課題】 本発明は、小型化によっても熱的影響を抑制
することの可能なルビジウム原子発振器を提供する。
【解決手段】 中空のケース３と、このケース３内にホ
ルダー７を介して固定されるキャビティー１とを有する
光マイクロ波ユニットを備えたルビジウム原子発振器に
おいて、ホルダー７がケース３内面に線接触した状態で
キャビティー１を固定した。An object of the present invention is to provide a rubidium atomic oscillator capable of suppressing a thermal effect even by miniaturization. SOLUTION: In a rubidium atomic oscillator provided with an optical microwave unit having a hollow case 3 and a cavity 1 fixed in the case 3 via a holder 7, the holder 7 is in line contact with the inner surface of the case 3. In this state, the cavity 1 was fixed.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光マイクロ波ユニ
ットを有するルビジウム原子発振器に属する。[0001] The present invention relates to a rubidium atomic oscillator having an optical microwave unit.
【０００２】[0002]
【従来の技術】従来のルビジウム原子発振器に用いられ
ている光マイクロ波ユニットの概略構成を図５に示す。
この図において、１はキャビティー、２はキャビティー
をケース３に固定するための角形ホルダーであり、ケー
ス３は方形断面を有する中空部材である。４はランプ部
分、５はヒーター６をケース３内に固定するためのネジ
固定部であり、ランプ部分４側のケース３端部に設けら
れている。2. Description of the Related Art FIG. 5 shows a schematic configuration of an optical microwave unit used in a conventional rubidium atomic oscillator.
In this figure, 1 is a cavity, 2 is a square holder for fixing the cavity to the case 3, and the case 3 is a hollow member having a square cross section. Reference numeral 4 denotes a lamp portion, and reference numeral 5 denotes a screw fixing portion for fixing the heater 6 in the case 3, which is provided at an end of the case 3 on the lamp portion 4 side.
【０００３】約１００℃に保温されているランプ部分４
やその他環境温度の変化がケース３に伝導する。一方、
キャビティー１はヒーター部６により保温され、その熱
が接触部分を伝わり、ケース３と熱交換が行われる。[0003] Lamp part 4 kept at about 100 ° C
And other changes in the ambient temperature are transmitted to Case 3. on the other hand,
The cavity 1 is kept warm by the heater section 6, and the heat is transmitted through the contact portion, and heat exchange with the case 3 is performed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来技
術には以下に掲げる問題点があった。すなわち、従来の
光マイクロ波ユニットでは、角形ホルダー２より接触面
積が小さいネジ固定部５をランプ部分４近傍に配置して
いるが、ネジが金属であるため熱が伝わりやすい。ま
た、角形ホルダー２はケース３内面との接触面積が大き
くなるため熱が伝わりやすい。この為、角形ホルダー２
はキャビティー１の固定に優れていたが温度傾斜が大き
くなる。However, the prior art has the following problems. That is, in the conventional optical microwave unit, the screw fixing part 5 having a smaller contact area than the square holder 2 is arranged near the lamp part 4, but heat is easily transmitted because the screw is made of metal. In addition, since the square holder 2 has a large contact area with the inner surface of the case 3, heat is easily transmitted. For this reason, square holder 2
Was excellent in fixing the cavity 1, but the temperature gradient became large.
【０００５】従来は、各々の部品が十分な大きさをも
ち、各発熱部品を離して配置が可能であるため、個々の
熱抵抗を十分保つことができて個々の熱的な影響を抑え
ることができた。しかし、形状の小型化等により、個々
の熱的な影響を無視できなくなり熱的な遮蔽が必要にな
った。Conventionally, each component has a sufficient size, and since each heat-generating component can be arranged apart from each other, individual thermal resistance can be sufficiently maintained and individual thermal effects can be suppressed. Was completed. However, due to the miniaturization of the shape and the like, the individual thermal effects cannot be ignored and thermal shielding is required.
【０００６】本発明は斯かる問題点を鑑みてなされたも
のであり、その目的とするところは、小型化によっても
熱的影響を抑制することの可能なルビジウム原子発振器
を提供する点にある。The present invention has been made in view of such a problem, and an object of the present invention is to provide a rubidium atomic oscillator capable of suppressing a thermal effect even by downsizing.
【０００７】[0007]
【課題を解決するための手段】請求項１に記載のルビジ
ウム原子発振器は、中空のケースと、このケース内面に
ホルダーを介し線接触した状態で固定されるキャビティ
ーとを有する光マイクロ波ユニットを備えたルビジウム
原子発振器において、ケースは角形断面を有し、ホルダ
ーはケース内面に接触する部分の外形輪郭が円弧状に形
成されていることを特徴とする。また、ケースは略方形
断面を有し、ホルダーの外形輪郭が円形に形成されてい
るようにすることができる。また、ホルダーには、ケー
ス内面との接触部近傍に空洞が形成されているようにす
ることができる。また、ホルダーには、ケース内面との
接触部近傍に切欠が形成されているようにすることがで
きる。また、ホルダーは弾性部材から形成されているよ
うにすることができる。According to a first aspect of the present invention, there is provided a rubidium atomic oscillator having a hollow case and an inner surface of the case.
In a rubidium atomic oscillator having an optical microwave unit having a cavity fixed in line contact with a holder , a case has a square cross section,
-The outer contour of the part that contacts the inner surface of the case is shaped like an arc
It is characterized by having been done . The case may have a substantially square cross section, and the outer contour of the holder may be formed in a circular shape. Further, the holder may have a cavity formed near the contact portion with the inner surface of the case. Further, the holder may have a notch formed in the vicinity of the contact portion with the inner surface of the case. Further, the holder can be formed from an elastic member.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて詳細に説明する。図１に示すように、本実施
の形態に係る光マイクロ波ユニットは、キャビティー１
を円形ホルダー７によりケース３に固定し、さらに、ネ
ジ固定部５をランプ部分４と反対側のケース３端部に設
けている。Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, the optical microwave unit according to the present embodiment has a cavity 1
Is fixed to the case 3 by a circular holder 7, and a screw fixing portion 5 is provided at an end of the case 3 opposite to the lamp portion 4.
【０００９】キャビティー１側に固定された円形ホルダ
ー７は、ケース３内面との接触面が円弧状であるため線
接触となり、従来の角形ホルダー２がケース３内面との
接触面が面接触であることと比較して接触面積が小さく
なるため、熱抵抗が大きくなりシールドの熱交換は小さ
くなる。すなわちキャビティーの保温能力が向上するこ
とができる。The circular holder 7 fixed to the cavity 1 is in line contact because the contact surface with the inner surface of the case 3 is arc-shaped, and the conventional rectangular holder 2 is in surface contact with the contact surface with the inner surface of the case 3. Since the contact area becomes smaller as compared with the case, the heat resistance increases and the heat exchange of the shield decreases. That is, the heat retaining ability of the cavity can be improved.
【００１０】また、接触面積が小さいため、ランプ部分
４の熱により比較的高温になる部分に、円形ホルダー７
を配置し、ネジ固定部５をランプ部分４と反対側のケー
ス３端部という比較的低温な部分に設けることで、キャ
ビティー１の固定と熱交換を最小限にし、キャビティー
１の温度傾斜を少なくできる。Further, since the contact area is small, the circular holder 7
And fixation of the cavity 1 and heat exchange are minimized by providing the screw fixing portion 5 at a relatively low temperature portion, that is, the end of the case 3 opposite to the lamp portion 4. Can be reduced.
【００１１】実施の形態に係る光マイクロ波ユニットは
上記の如く構成されているので、以下に掲げる効果を奏
する。Since the optical microwave unit according to the embodiment is configured as described above, the following effects can be obtained.
【００１２】第１に、ホルダー７を円形にすることで、
接触面積を少なくすることができ、キャビティー１の保
温能力向上と温度傾斜を減らす効果がある。加えて、ホ
ルダー７の形状が円であるため、キャビティー１支持の
力が分散され比較的柔らかいガラスエポキシ等の樹脂素
材でも薄型に形成でき、更に熱抵抗を高める効果があ
る。そして、キャビティー１の保温能力が向上すること
によりヒーター電力を軽減する効果がある。これら効果
により、小型化、低消費電力化、温度特性の性能向上に
なる。First, by making the holder 7 circular,
The contact area can be reduced, and there is an effect of improving the heat retaining ability of the cavity 1 and reducing the temperature gradient. In addition, since the shape of the holder 7 is a circle, the force for supporting the cavity 1 is dispersed, and a relatively soft resin material such as glass epoxy can be formed to be thin, which has the effect of further increasing the thermal resistance. In addition, there is an effect that heater power is reduced by improving the heat retaining ability of the cavity 1. By these effects, miniaturization, low power consumption, and performance improvement of temperature characteristics are achieved.
【００１３】一方、キャビティー１の温度傾斜が軽減さ
れることでキャビティー１側の温度制御が容易になる。
従って、この面からも温度特性の性能向上になる。On the other hand, the temperature control of the cavity 1 is facilitated by reducing the temperature gradient of the cavity 1.
Therefore, the performance of the temperature characteristics is also improved from this aspect.
【００１４】第２に、形状が簡単な円であるため、加工
がしやすく、接触部分の寸法差が少なくはめやすい。こ
の為、製造が容易になる。Second, since the shape is a simple circle, it is easy to work, and it is easy to fit with a small dimensional difference at the contact portion. For this reason, manufacture becomes easy.
【００１５】なお、本実施の形態においては、本発明は
上述の光マイクロ波ユニットに限定されず、本発明を適
用する上で好適なルビジウム原子発振器に適用すること
ができる。In the present embodiment, the present invention is not limited to the above-mentioned optical microwave unit, but can be applied to a rubidium atomic oscillator suitable for applying the present invention.
【００１６】一例として、図２及び図３に示すように、
円形ホルダー７のケース３内面接触部近傍に空洞８や切
欠９を形成し、この接触部にバネ性を持たせることで、
ケース３の製造時の寸法ばらつきに容易に対応できる。
同様に、図４に示すように、円形ホルダー７をゴム等の
弾性部材で形成してもよい。As an example, as shown in FIGS. 2 and 3,
A cavity 8 and a notch 9 are formed in the vicinity of the inner surface contact portion of the case 3 of the circular holder 7, and by giving the contact portion a spring property,
The case 3 can easily cope with dimensional variations during manufacturing.
Similarly, as shown in FIG. 4, the circular holder 7 may be formed of an elastic member such as rubber.
【００１７】また、上記構成部材の数、位置、形状等は
上記実施の形態に限定されず、本発明を実施する上で好
適な数、位置、形状等にすることができる。なお、各図
において、同一構成要素には同一符号を付している。The number, position, shape, and the like of the above-mentioned constituent members are not limited to the above-described embodiment, but can be set to a number, position, shape, and the like suitable for carrying out the present invention. In the drawings, the same components are denoted by the same reference numerals.
【００１８】[0018]
【発明の効果】本発明は以上のように構成されているの
で、小型化によっても熱的影響を抑制することの可能な
ルビジウム原子発振器を提供することができる、という
効果を奏する。According to the present invention having the above-described structure, it is possible to provide a rubidium atomic oscillator capable of suppressing a thermal effect even with a miniaturization.
【図１】本発明の一実施形態であるルビジウム原子発振
器に用いられる光マイクロ波ユニットの概略構成を示す
図である。FIG. 1 is a diagram showing a schematic configuration of an optical microwave unit used in a rubidium atomic oscillator according to an embodiment of the present invention.
【図２】円形ホルダーの他の例を示す図である。FIG. 2 is a view showing another example of a circular holder.
【図３】円形ホルダーの他の例を示す図である。FIG. 3 is a view showing another example of the circular holder.
【図４】円形ホルダーの他の例を示す図である。FIG. 4 is a view showing another example of the circular holder.
【図５】従来のルビジウム原子発振器に用いられる光マ
イクロ波ユニットの概略構成を示す図である。FIG. 5 is a diagram showing a schematic configuration of an optical microwave unit used in a conventional rubidium atomic oscillator.
１ キャビティー ２ 角形ホルダー ３ ケース ４ ランプ部分 ５ ネジ固定部 ６ ヒーター部 ７ 円形ホルダー ８ 空洞 ９ 切欠 DESCRIPTION OF SYMBOLS 1 Cavity 2 Square holder 3 Case 4 Lamp part 5 Screw fixing part 6 Heater part 7 Circular holder 8 Cavity 9 Notch
Claims (5)
ダーを介し線接触した状態で固定されるキャビティーと
を有する光マイクロ波ユニットを備えたルビジウム原子
発振器において、前記ケースは角形断面を有し、前記ホルダーは前記ケー
ス内面に接触する部分の外形輪郭が円弧状に形成されて
いる ことを特徴とするルビジウム原子発振器。1. A hollow case and a holder formed inside the case.
In a rubidium atomic oscillator provided with an optical microwave unit having a cavity fixed in line contact with a holder, the case has a square cross section, and the holder has a casing.
The outer contour of the part that touches the inner surface is formed in an arc
Rubidium atomic oscillator, characterized in that there.
ルダーの外形輪郭が円形に形成されていることを特徴と
する請求項１記載のルビジウム原子発振器。2. The rubidium atomic oscillator according to claim 1, wherein the case has a substantially rectangular cross section, and an outer contour of the holder is formed in a circular shape.
接触部近傍に空洞が形成されていることを特徴とする請
求項２記載のルビジウム原子発振器。The method according to claim 3, wherein said holder, characterized in that the cavity in the contact vicinity of said casing inner surface is formed 請
A rubidium atomic oscillator according to claim 2 .
接触部近傍に切欠が形成されていることを特徴とする請
求項４記載のルビジウム原子発振器。The method according to claim 4, wherein said holder, characterized in that the cutout in the contact vicinity of said casing inner surface is formed 請
A rubidium atomic oscillator according to claim 4 .
いることを特徴とする請求項２記載のルビジウム原子発
振器。5. The rubidium atom emitting device according to claim 2, wherein said holder is formed of an elastic member.
Shaker .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24437598A JP2990172B1 (en) | 1998-08-17 | 1998-08-17 | Rubidium atomic oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24437598A JP2990172B1 (en) | 1998-08-17 | 1998-08-17 | Rubidium atomic oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2990172B1 true JP2990172B1 (en) | 1999-12-13 |
| JP2000068570A JP2000068570A (en) | 2000-03-03 |
Family
ID=17117758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24437598A Expired - Lifetime JP2990172B1 (en) | 1998-08-17 | 1998-08-17 | Rubidium atomic oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2990172B1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602005027217D1 (en) * | 2004-07-13 | 2011-05-12 | Draper Lab Charles S | DEVICE FOR SUSPENDING A DEVICE IN CHIP SIZE AND AN ATOCHING SYSTEM |
| JP4830141B2 (en) * | 2006-05-31 | 2011-12-07 | セイコーエプソン株式会社 | Atomic oscillator |
| JP6003280B2 (en) * | 2012-06-20 | 2016-10-05 | セイコーエプソン株式会社 | Atomic oscillator and electronic equipment |
| JP2015118962A (en) * | 2013-12-16 | 2015-06-25 | セイコーエプソン株式会社 | Quantum interference device, atomic oscillator, electronic apparatus and mobile body |
-
1998
- 1998-08-17 JP JP24437598A patent/JP2990172B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000068570A (en) | 2000-03-03 |
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