JPH02106703A - Rock crystal optical filter - Google Patents
Rock crystal optical filterInfo
- Publication number
- JPH02106703A JPH02106703A JP63259776A JP25977688A JPH02106703A JP H02106703 A JPH02106703 A JP H02106703A JP 63259776 A JP63259776 A JP 63259776A JP 25977688 A JP25977688 A JP 25977688A JP H02106703 A JPH02106703 A JP H02106703A
- Authority
- JP
- Japan
- Prior art keywords
- mgf2
- glass
- layer
- layers
- color correction
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title abstract description 22
- 239000011034 rock crystal Substances 0.000 title abstract 3
- 239000011521 glass Substances 0.000 claims abstract description 22
- 239000013078 crystal Substances 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 10
- 230000001070 adhesive effect Effects 0.000 claims abstract description 9
- 229910001635 magnesium fluoride Inorganic materials 0.000 abstract description 16
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 11
- 229910052681 coesite Inorganic materials 0.000 abstract description 8
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 8
- 239000000377 silicon dioxide Substances 0.000 abstract description 8
- 229910052682 stishovite Inorganic materials 0.000 abstract description 8
- 229910052905 tridymite Inorganic materials 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 238000007738 vacuum evaporation Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 20
- 239000012790 adhesive layer Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
Landscapes
- Optical Filters (AREA)
- Polarising Elements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ビデオカメラ、電子スチルカメラ、画像入力
装置等の各種電子光学機器に用いられる水晶光学フィル
タに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a crystal optical filter used in various electronic optical devices such as video cameras, electronic still cameras, and image input devices.
従来、この種の水晶光学フィルタは、第２図にポすよう
に、色補正ガラス（１１）の光学向］Ｅ面に耐湿性を付
１−ｙするためにコーティングによりＭｇＦ２層（＋２
）（＋２）を形成した上で、この色補正ガラス（１１）
を光学両主面から複数の水晶板（＋３）（１３）（＋３
）で挟み込んで接着により一体化していた。なお、第２
図中、（１４）は接着剤層である。Conventionally, this type of crystal optical filter has been coated with a MgF2 layer (+2
) (+2) and then this color correction glass (11)
from both optical principal surfaces to multiple crystal plates (+3) (13) (+3
) and were integrated by adhesion. In addition, the second
In the figure, (14) is an adhesive layer.
しかしなから、ｌ・、記従来構成のように色補正ガラス
（１１）の光学内１：、而に耐？＆＋１性を付Ｉ了する
ためにＭ ｇ Ｆ ２のみをコートし、ているものの場
合、ＭｇＦ２は色補正ガラス（１１）に対する付着強度
に優れているものの、接着剤に対して強力な接着強度が
得られるものではないため、耐湿性能は加速寿命試験に
おいてせいぜい５００時間程度に過ぎず、耐用期間を増
大させることが困難であるという問題点があった。However, as in the conventional configuration, the color correction glass (11) is not durable. In cases where only MgF2 is coated to provide &+1 properties, MgF2 has excellent adhesion strength to color correction glass (11), but does not have strong adhesion strength to adhesives. Therefore, the moisture resistance performance was only about 500 hours at most in an accelerated life test, and there was a problem in that it was difficult to increase the service life.
本発明は、このような従来の問題点に鑑みてなされたも
ので、耐湿性を飛躍的に向上させることにより長期間に
肩：っで高性能を保持し得る水晶光学フィルタを提供す
ることを目的とするものである。The present invention has been made in view of these conventional problems, and aims to provide a crystal optical filter that can maintain high performance for a long period of time by dramatically improving moisture resistance. This is the purpose.
上記目的を達成するために本発明は、色補正ガラスの光
学向り而にＭｇＦ２をコートし、このＭｇＦ２層」二に
ＳｉＯ２をコートすると共に、この色補正ガラスを前記
光学両主面側から複数の水晶板で挟み込んで接着により
一体化してなることを特徴とするものである。In order to achieve the above object, the present invention coats MgF2 on the optical side of a color correction glass, coats this MgF2 layer with SiO2, and applies a plurality of layers of this color correction glass from both optical principal surfaces. It is characterized by being sandwiched between two crystal plates and integrated by adhesive.
Ｍ ｇ Ｆ ２は色補１Ｆガラスに対して強い付着強度
が１υられるものであり、また、５１０２は接着剤に対
して強い接着強度か得られるものであるので、Ｍ ｇ
Ｆ ２層」−に５ｉＣｈ層を形成していることにより、
耐湿性が飛躍的に向上するものである。M g F 2 has a strong adhesion strength of 1υ to color complementary 1F glass, and 5102 has a strong adhesion strength to adhesives, so M g
By forming a 5iCh layer on the F2 layer,
This dramatically improves moisture resistance.
以下、本発明の実施例を図面に基づき詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第１図において、（１）は色補正ガラスであって、その
光学両主面にＭ ｇ Ｆ ２層（２）（２）がコーティ
ングにより形成され、史に、これらＭｇＦ２層（２）（
２）、、、ｌ−にＳｉＯ□層（３）（３）がコーティン
グにより形成されている。このＳｉＯ２層（３）（３）
は真空蒸着によってＭｇＦ２層（２）（２）−１−に強
力な付着強度でコーティングすることができる。In FIG. 1, (1) is a color correction glass, and two MgF layers (2) (2) are formed on both principal optical surfaces by coating.
2) A SiO□ layer (3) (3) is formed by coating on the l-. This SiO2 layer (3) (3)
can be coated with strong adhesion strength onto the MgF2 layer (2)(2)-1- by vacuum evaporation.
このように光学両−ＩＥ面にＭｇＦ２層（２）（２）お
よび５ＩＯ２層（３）（３）が形成された色補正ガラス
（１）は、これら光学両主面側から５ＩＯ２の組成を有
する複数の水晶板（４）（４）（４）によって挟み込ま
れ、接着剤層（５Ｈ５）（５）を介して接着一体化され
、これによって、所期の水晶光学フィルタか得られるも
のである。この場合、ｉｌｆ記色補色補正ガラス）と水
晶板（４）（４）あるいは水晶板（４）と水晶板（４）
間に介装される接着剤層（５）としては、５１０２層（
３）（３）に対して強力な接着強度が得られるポリブタ
ジェン系もしくはエポキン系の接着剤が好ましい。As described above, the color correction glass (1) in which the MgF2 layers (2) (2) and the 5IO2 layers (3) (3) are formed on both optical IE surfaces has a composition of 5IO2 from the sides of both optical principal surfaces. It is sandwiched between a plurality of crystal plates (4) (4) (4) and bonded together via adhesive layers (5H5) (5), thereby obtaining the desired crystal optical filter. In this case, the ILF color recording complementary color correction glass) and the crystal plate (4) (4) or the crystal plate (4) and the crystal plate (4)
The adhesive layer (5) interposed between the layers is 5102 layers (
3) In contrast to (3), polybutadiene-based or Epoquin-based adhesives are preferred because they provide strong adhesive strength.
このような構成のこの実施例の水晶光学フィルタでは、
色補正ガラス（１）の光学主面とＭ ｇ Ｆ ２層（２
）間では強い付着強度か得られ、また、ＭｇＦ２層（２
）と５ＩＯ２層（３）間は真空蒸着により強力結合でき
、更に、５ｉＣｈ層（３）と水晶板（４）間も強力な接
着強度を有している。したがって、各界面で優れた結合
強度を付５．できるので、加速ノｆ命試験において１０
００時間以１・、の耐湿性が実現させることかできた。In the crystal optical filter of this embodiment with such a configuration,
The main optical surface of the color correction glass (1) and the M g F 2 layer (2
), strong adhesion strength was obtained between the MgF2 layer (2
) and the 5IO2 layer (3) can be strongly bonded by vacuum deposition, and furthermore, the 5iCh layer (3) and the crystal plate (4) also have strong adhesive strength. Therefore, excellent bonding strength is achieved at each interface.5. 10 in the accelerated life test.
A moisture resistance of 1.00 hours or more was achieved.
以上説明したように本発明によるときは、色補正ガラス
の光学両主面にＭｇＦ２をコートし、このＭｇＦ２層−
ににＳｉＯ２をコートすると共に、この色補正ガラスを
前記光学両十市側から複数の水晶板で挟み込んで接着に
より−・体化してなるものとしたので、従来と比較して
水晶光学フィルタの耐湿性を飛躍的に向」二させること
ができ、長期間に亙って高性能を保持させることができ
るという優れた効果を発揮するものとなった。As explained above, according to the present invention, MgF2 is coated on both main optical surfaces of the color correction glass, and this MgF2 layer -
In addition to coating the glass with SiO2, this color correction glass is sandwiched between a plurality of quartz plates from the optical side and bonded together, making the quartz optical filter more moisture resistant than conventional ones. It has shown excellent effects in that it can dramatically improve performance and maintain high performance for a long period of time.
第１図は本発明の実施例を示す要部拡大斜視図、第２図
は従来例を示す要部拡大斜視図である。
（１）・・・色補正ガラス、（２）・・・ＭｇＦ２層、
（３）・・・５１０２層、（４）・・・水晶板。
＝５FIG. 1 is an enlarged perspective view of main parts showing an embodiment of the present invention, and FIG. 2 is an enlarged perspective view of main parts showing a conventional example. (1)...Color correction glass, (2)...MgF2 layer,
(3)...5102 layers, (4)...quartz plate. =5
Claims (1)
のＭｇＦ＿２層上にＳｉＯ＿２をコートすると共に、こ
の色補正ガラスを前記光学両主面側から複数の水晶板で
挟み込んで接着により一体化してなる水晶光学フィルタ
。MgF_2 is coated on both optical main surfaces of a color correction glass, SiO_2 is coated on this MgF_2 layer, and this color correction glass is sandwiched between a plurality of crystal plates from the optical both main surface sides and integrated by adhesive. Crystal optical filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63259776A JPH02106703A (en) | 1988-10-14 | 1988-10-14 | Rock crystal optical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63259776A JPH02106703A (en) | 1988-10-14 | 1988-10-14 | Rock crystal optical filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02106703A true JPH02106703A (en) | 1990-04-18 |
Family
ID=17338814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63259776A Pending JPH02106703A (en) | 1988-10-14 | 1988-10-14 | Rock crystal optical filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02106703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0541272U (en) * | 1991-10-29 | 1993-06-01 | オリンパス光学工業株式会社 | Optical filter support mechanism and optical filter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS606905A (en) * | 1983-06-08 | 1985-01-14 | Hoya Corp | Polarizing film |
| JPS6360101B2 (en) * | 1982-11-18 | 1988-11-22 |
-
1988
- 1988-10-14 JP JP63259776A patent/JPH02106703A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6360101B2 (en) * | 1982-11-18 | 1988-11-22 | ||
| JPS606905A (en) * | 1983-06-08 | 1985-01-14 | Hoya Corp | Polarizing film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0541272U (en) * | 1991-10-29 | 1993-06-01 | オリンパス光学工業株式会社 | Optical filter support mechanism and optical filter |
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