JP2822294B2 - lens - Google Patents
lensInfo
- Publication number
- JP2822294B2 JP2822294B2 JP35643992A JP35643992A JP2822294B2 JP 2822294 B2 JP2822294 B2 JP 2822294B2 JP 35643992 A JP35643992 A JP 35643992A JP 35643992 A JP35643992 A JP 35643992A JP 2822294 B2 JP2822294 B2 JP 2822294B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- liquid
- lens barrel
- barrel
- space
- 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 - Fee Related
Links
Landscapes
- Lens Barrels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、液体レンズを含んだレ
ンズで特に鏡筒部分も含めてレンズ全体の熱による変形
を防止したレンズに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens including a liquid lens, and more particularly to a lens in which the entire lens including a lens barrel is prevented from being deformed by heat.
【０００２】[0002]
【従来の技術】従来の液体レンズは、ガラス又は、プラ
スチックで形成された内部に中空部を有するレンズを形
成する部材の中空部に透明な液体を封入した構造をなし
ている。このような液体レンズを投影レンズ等に使用す
る場合、熱による影響により変形する。2. Description of the Related Art A conventional liquid lens has a structure in which a transparent liquid is sealed in a hollow portion of a member forming a lens formed of glass or plastic and having a hollow portion inside. When such a liquid lens is used for a projection lens or the like, it is deformed by the influence of heat.
【０００３】又、最近低価格で軽量であることから、プ
ラスチックのレンズが用いられる。このプラスチックの
レンズは熱による影響が大であり、投影レンズ等に使用
した場合、熱による影響を受け好ましくない。Recently, plastic lenses are used because of their low cost and light weight. This plastic lens is greatly affected by heat, and when used for a projection lens or the like, is unfavorably affected by heat.
【０００４】[0004]
【発明が解決しようとする課題】以上述べたように、こ
の種の液体レンズで、透明な合成樹脂により形成された
レンズを形成する部材に透明な液体を封入したレンズの
場合、レンズを形成する部材が熱により変形した場合、
それによって焦点距離等が変化するため好ましくない。As described above, in this type of liquid lens, in the case of a lens in which a transparent liquid is sealed in a member forming a lens made of a transparent synthetic resin, the lens is formed. If the member is deformed by heat,
This changes the focal length and the like, which is not preferable.
【０００５】本発明は、レンズ鏡筒を含めてレンズ系全
体の熱容量を大にすることによって、熱による変形を防
止するようにした液体レンズを含んでいるレンズを提供
することを目的としている。SUMMARY OF THE INVENTION It is an object of the present invention to provide a lens including a liquid lens which prevents deformation due to heat by increasing the heat capacity of the entire lens system including the lens barrel.
【０００６】[0006]
【課題を解決するための手段】本発明のレンズは、透明
な合成樹脂よりなる液体レンズを形成する中空の部材
を、夫々合成樹脂により形成された外筒と内筒とを空間
を設けて配置した二重構造をなす鏡筒にて保持した構造
で、鏡筒の外筒と内筒との間および液体レンズを形成す
る部材の中空部分に透明な液体を封入したものである。According to the lens of the present invention, a hollow member forming a liquid lens made of a transparent synthetic resin is arranged by providing a space between an outer cylinder and an inner cylinder each formed of a synthetic resin. A transparent liquid is sealed between the outer tube and the inner tube of the lens barrel and in the hollow portion of the member forming the liquid lens.
【０００７】本発明のレンズは、レンズを保持する鏡筒
を二重構造としてその外筒と内筒との間に液体を入れる
ようにしたことにより、この鏡筒を含めたレンズ全体の
熱容量を大にすることにより、熱による変形を出来る限
り小にし得るものである。The lens of the present invention has a double-structured lens barrel for holding the lens, and a liquid is inserted between the outer cylinder and the inner cylinder to reduce the heat capacity of the entire lens including the lens barrel. By making it large, the deformation due to heat can be made as small as possible.
【０００８】又本発明のレンズは、鏡筒の空間と液体レ
ンズの空間とを連通させて、鏡筒と液体レンズとの液体
を共通させたものである。In the lens of the present invention, the space of the lens barrel and the space of the liquid lens are communicated with each other so that the liquid of the lens barrel and the liquid lens are common.
【０００９】又本発明のレンズにおいて、鏡筒の外筒に
液体流入口と液体流出口とを設け、液体お循環させるよ
うにすれば、一層温度上昇を防ぐことが可能になる。更
に流入口と流出口とを連通する流路の途中に液体タンク
を設置し、このタンクを冷却するようにすれば、冷却効
果は上昇し、液体レンズ等の温度上昇はほとんどなく、
したがってその変形もない。Further, in the lens of the present invention, if a liquid inlet and a liquid outlet are provided in the outer barrel of the lens barrel to circulate the liquid, it is possible to further prevent the temperature from rising. Furthermore, if a liquid tank is installed in the middle of the flow path that connects the inflow port and the outflow port, and this tank is cooled, the cooling effect increases, and the temperature of the liquid lens and the like hardly increases.
Therefore, there is no such deformation.
【００１０】[0010]
【実施例】次に本発明の実施例を図面により説明する。
図１は本発明の実施例の断面図で、１は所望の形状をし
た合成樹脂製のレンズ部材１ａ，１ｂよりなる液体レン
ズを構成する部材、２はレンズを保持する内筒３と内筒
３と同軸でその外側に一定の空間を設けて配置した外筒
４とを例えば端部５，６にて熔着して一体に封止構造に
形成された鏡筒である。又レンズ部材１ａ，１ｂで形成
される空間７及び鏡筒の外筒と内筒との間の空間８には
透明な液体が封入され又空間７と空間８とは孔９にて連
通されている。Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a sectional view of an embodiment of the present invention. Reference numeral 1 denotes a member constituting a liquid lens composed of lens members 1a and 1b made of a synthetic resin having a desired shape. Reference numeral 2 denotes an inner cylinder 3 holding the lens and an inner cylinder. An outer cylinder 4, which is coaxial with the outer cylinder 3 and is provided with a certain space outside thereof, is welded at, for example, ends 5 and 6, and is a lens barrel integrally formed in a sealed structure. A transparent liquid is sealed in a space 7 formed by the lens members 1a and 1b and a space 8 between the outer cylinder and the inner cylinder of the lens barrel, and the space 7 and the space 8 communicate with each other through a hole 9. I have.
【００１１】この実施例のレンズは、レンズを形成する
部材１ａ，１ｂにて形成される部材が液体レンズ１を構
成する。又鏡筒２は外筒４と内筒３とにて構成し、液体
レンズ１を保持すると共に両筒３，４間の空間８内にも
透明な液体を入れることにより鏡筒２を含めたレンズ全
体の熱容量が比較的大であるため、加熱されても変形が
少ない。In the lens of this embodiment, the member formed by the members 1a and 1b forming the lens constitutes the liquid lens 1. The lens barrel 2 is composed of an outer cylinder 4 and an inner cylinder 3. The lens barrel 2 is included by holding the liquid lens 1 and also by introducing a transparent liquid into a space 8 between the two cylinders 3 and 4. Since the heat capacity of the entire lens is relatively large, deformation is small even when heated.
【００１２】更に、図示するように外筒４に液体流入口
１０および流出口１１を設け、液体レンズ部分を含めて
液体を循環させるようにすれば、鏡筒２内の温度上昇は
少なく、一層変形を少なく出来る。Further, as shown in the figure, if a liquid inlet 10 and an outlet 11 are provided in the outer cylinder 4 to circulate the liquid including the liquid lens portion, the temperature rise in the lens barrel 2 is small, and Deformation can be reduced.
【００１３】図１において、１２，１３は合成樹脂又は
ガラスのレンズである。これらレンズ１２，１３も内筒
に保持され又保持された部分にも外筒との間に液体が存
在するため、この液体が鏡筒内部を冷却する役目をも
ち、これらレンズ１２，１３の温度上昇も防止できる。
したがってレンズ１２，１３が合成樹脂製であっても熱
による変形を防止し得る。In FIG. 1, lenses 12 and 13 are made of synthetic resin or glass. Since the lenses 12 and 13 are also held by the inner cylinder and liquid is present between the held portions and the outer cylinder, the liquid serves to cool the inside of the lens barrel, and the temperature of the lenses 12 and 13 is reduced. The rise can also be prevented.
Therefore, even if the lenses 12 and 13 are made of synthetic resin, deformation due to heat can be prevented.
【００１４】この実施例においては、液体レンズを一つ
だけ設けてあるが、三つのレンズ要素共に液体レンズに
してもよい。又流入口１０と流出口１１とを接続する循
環路中にタンクを設けて、このタンクを冷却手段により
冷却すれば、加熱防止を一層効果的に行ない得る。In this embodiment, only one liquid lens is provided, but all three lens elements may be liquid lenses. If a tank is provided in a circulation path connecting the inflow port 10 and the outflow port 11 and the tank is cooled by a cooling means, heating can be more effectively prevented.
【００１５】[0015]
【発明の効果】本発明のレンズは、液体レンズをレンズ
要素の一つとしたものでそれを保持する鏡筒を二重構造
としてその空間に液体を封入することにより、鏡筒部分
を含めたレンズ全体を加熱防止構造としたので、投影用
レンズのように加熱による影響を受けやすいレンズに使
用すれば効果的である。又、熱による影響を受けやすい
プラスチックレンズを用いる場合、鏡筒が冷却構造であ
るため、その変形防止にも役立つ。The lens of the present invention has a liquid lens as one of the lens elements and has a lens barrel including the lens barrel portion by holding the lens in a double structure having a lens barrel holding the liquid lens. Since the entire structure has a heating prevention structure, it is effective to use a lens that is easily affected by heating, such as a projection lens. When a plastic lens that is easily affected by heat is used, the lens barrel has a cooling structure, which also helps to prevent deformation.
【図１】 本発明の実施例の断面図FIG. 1 is a sectional view of an embodiment of the present invention.
１ 液体レンズ ２ 鏡筒 ３ 内筒 ４ 外筒 1 liquid lens 2 lens barrel 3 inner cylinder 4 outer cylinder
Claims (5)
とを同軸に配置した鏡筒と、前記鏡筒の内筒に保持され
た透明な合成樹脂よりなり間に中空部を有する液体レン
ズ形成部材とよりなり、前記鏡筒に形成された空間及び
前記液体レンズ形成部材内の中空部に液体を封入したレ
ンズ。1. A lens barrel in which an inner cylinder and an outer cylinder forming a space of a sealing structure are coaxially arranged, and a transparent synthetic resin held in the inner cylinder of the lens barrel has a hollow portion therebetween. A lens comprising a liquid lens forming member, wherein a liquid is sealed in a space formed in the lens barrel and a hollow portion in the liquid lens forming member.
部材の中空部とを連通する孔を有する請求項１のレン
ズ。2. The lens according to claim 1, further comprising a hole communicating between a space of the lens barrel and a hollow portion of the liquid lens forming member.
液体流出口を設けた請求項１又は２のレンズ。3. The lens according to claim 1, further comprising a liquid inlet and a liquid outlet formed in an outer cylinder of said lens barrel.
体流出口が外部タンクに接続されている請求項１，２又
は３のレンズ。4. The lens according to claim 1, wherein the liquid inlet and the liquid outlet formed in the lens barrel are connected to an external tank.
製レンズを更に有する請求項１，２，３又は４のレン
ズ。5. The lens according to claim 1, further comprising a synthetic resin lens held in the inner barrel of the lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35643992A JP2822294B2 (en) | 1992-12-22 | 1992-12-22 | lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35643992A JP2822294B2 (en) | 1992-12-22 | 1992-12-22 | lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06194505A JPH06194505A (en) | 1994-07-15 |
| JP2822294B2 true JP2822294B2 (en) | 1998-11-11 |
Family
ID=18449022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35643992A Expired - Fee Related JP2822294B2 (en) | 1992-12-22 | 1992-12-22 | lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2822294B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4326461B2 (en) | 2004-11-15 | 2009-09-09 | Ｓｍｃ株式会社 | Temperature control system for small flow rate liquid |
-
1992
- 1992-12-22 JP JP35643992A patent/JP2822294B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06194505A (en) | 1994-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |