JP2003075703A - Optical unit and optical device - Google Patents
Optical unit and optical deviceInfo
- Publication number
- JP2003075703A JP2003075703A JP2001264336A JP2001264336A JP2003075703A JP 2003075703 A JP2003075703 A JP 2003075703A JP 2001264336 A JP2001264336 A JP 2001264336A JP 2001264336 A JP2001264336 A JP 2001264336A JP 2003075703 A JP2003075703 A JP 2003075703A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- unit
- gap
- optical unit
- elements
- 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
Landscapes
- Lens Barrels (AREA)
- Lenses (AREA)
- Optical Head (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は光学ユニット及び
光学装置に関し、さらに詳しくは、第１光学素子と第２
光学素子とが一体化された光学ユニット及びこの光学ユ
ニットを有する光学装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical unit and an optical device, and more specifically, a first optical element and a second optical element.
The present invention relates to an optical unit integrated with an optical element and an optical device having the optical unit.
【０００２】[0002]
【従来の技術】従来より、光学機能面を形成した第１光
学素子と、光学機能面を形成した第２光学素子を有し、
第１光学素子と第２光学素子とが一体化された光学ユニ
ットがある。2. Description of the Related Art Conventionally, a first optical element having an optical functional surface and a second optical element having an optical functional surface are provided.
There is an optical unit in which the first optical element and the second optical element are integrated.
【０００３】[0003]
【発明が解決しようとする課題】このように、２枚以上
の光学素子を組み合わせて、１つの光学ユニットを構成
する際、精度良くそれらを組み合わせる必要がある。As described above, when two or more optical elements are combined to form one optical unit, it is necessary to accurately combine them.
【０００４】例えば、光ピックアップ用の対物レンズの
場合、光軸のシフトよりも、チルトの発生により性能を
達成できなくなることがある。特に最近では高密度化に
よって、対物レンズに高精度が要求されるため、チルト
が少なく、また光軸のシフトも少なく、単レンズ（ある
いは光学素子）を組み合わせる必要がある。For example, in the case of an objective lens for an optical pickup, the performance may not be achieved due to the occurrence of tilt rather than the shift of the optical axis. Particularly in recent years, due to high density, high precision is required for the objective lens, and therefore tilt is small and optical axis shift is small, and it is necessary to combine a single lens (or an optical element).
【０００５】このような光学ユニットにおいては、第１
光学素子と第２光学素子とで囲まれた間隙は密閉状態と
なっているが、この間隙が密閉状態になっていると、使
用環境温度が下がった場合、この間隙に含まれる水分が
飽和状態となり間隙側の光学機能面に結露し光学性能に
影響をおよぼすことがある。In such an optical unit, the first
The gap surrounded by the optical element and the second optical element is in a hermetically sealed state. However, if the gap is hermetically sealed, the moisture contained in the gap is saturated when the operating environment temperature drops. Then, dew may condense on the optical function surface on the gap side and affect the optical performance.
【０００６】近年、高精度で安価な光ディスク用の光学
素子の要求が高まってきている。例えば、光ディスク用
対物レンズで間隙を有する場合、上述のような光学機能
面の結露が無視できず問題となってきた。すなわち、周
囲の温度変化により、光学素子同士の間の間隙で水蒸気
が結露し、光学機能面の表面に付着したり、曇る等の問
題であり、この結露や曇りが生じると、光学機能を達成
できなくなってしまう。In recent years, there is an increasing demand for optical elements for optical discs that are highly accurate and inexpensive. For example, when the objective lens for an optical disc has a gap, the above-mentioned dew condensation on the optical function surface cannot be ignored and has become a problem. That is, there is a problem that water vapor is condensed in the gap between the optical elements due to a change in ambient temperature and adheres to the surface of the optical function surface or becomes cloudy. When this condensation or clouding occurs, the optical function is achieved. I can not do it.
【０００７】この発明は、上記の課題に鑑みなされたも
ので、光学素子同士の光学機能面間の間隙側の光学機能
面に結露や曇りが生じにくい光学ユニットを提供し、ま
た光学ユニットを組み込んでも、光学機能面の結露や曇
りが生じにくい光学装置を提供することを目的としてい
る。The present invention has been made in view of the above problems, and provides an optical unit in which dew condensation or fogging is less likely to occur on the optical function surface on the gap side between the optical function surfaces of the optical elements, and the optical unit is incorporated. However, it is an object of the present invention to provide an optical device in which dew condensation or fogging on the optical function surface does not easily occur.
【０００８】[0008]
【課題を解決するための手段】前記課題を解決し、かつ
目的を達成するために、この発明は、以下のように構成
した。In order to solve the above-mentioned problems and to achieve the object, the present invention has the following constitution.
【０００９】請求項１に記載の発明は、『フランジ部を
有する複数個の光学素子を、この光学素子同士の光学機
能面間が間隙を有するように組み合わせた光学ユニット
において、前記フランジ部及び／または前記光学素子の
非光学機能面に、保温部材を設けたことを特徴とする光
学ユニット。』である。According to a first aspect of the present invention, there is provided an optical unit in which a plurality of optical elements having flange portions are combined so that optical function surfaces of the optical elements have a gap, the flange portion and / or Alternatively, an optical unit is characterized in that a heat insulating member is provided on the non-optical functional surface of the optical element. ].
【００１０】この請求項１に記載の発明によれば、保温
部材により保温されていることから、周囲の温度変化が
生じても光学素子同士の光学機能面間の間隙で水蒸気が
生じることが軽減され、光学機能面に結露することが防
止され、あるいは抑制され、さらに曇ることが防止され
る。According to the first aspect of the invention, since the temperature is maintained by the heat retaining member, it is possible to reduce the generation of water vapor in the gap between the optical function surfaces of the optical elements even if the ambient temperature changes. Therefore, dew condensation on the optical function surface is prevented or suppressed, and further clouding is prevented.
【００１１】請求項２に記載の発明は、『前記保温部材
は、ウレタン、保温防湿材料からなることを特徴とする
請求項１に記載の光学ユニット。』である。According to a second aspect of the present invention, in the optical unit according to the first aspect, the heat retaining member is made of urethane and a heat retaining / moisture proof material. ].
【００１２】この請求項２に記載の発明によれば、保温
部材は、ウレタン、保温防湿材料からなり、簡単かつ安
価に保温することができる。According to the second aspect of the present invention, the heat insulating member is made of urethane and a heat insulating / moisture proof material, and can keep the heat easily and inexpensively.
【００１３】請求項３に記載の発明は、『前記請求項１
または請求項２に記載の光学ユニットを保持する保持部
材を備えたことを特徴とする光学装置。』である。The invention according to claim 3 provides the "claim 1
An optical device comprising a holding member that holds the optical unit according to claim 2. ].
【００１４】この請求項３に記載の発明によれば、光学
装置に光学ユニットを組み込んでも、光学素子同士の光
学機能面間の間隙側の光学機能面に結露や曇りが生じに
くい。According to the third aspect of the present invention, even if the optical unit is incorporated in the optical device, dew condensation or fogging is unlikely to occur on the optical function surface on the gap side between the optical function surfaces of the optical elements.
【００１５】請求項４に記載の発明は、『フランジ部を
有する複数個の光学素子を、この光学素子同士の光学機
能面間が間隙を有するように組み合わせた光学ユニット
を備える光学装置において、前記光学ユニットを通電に
より駆動させる駆動手段を備え、この駆動手段が発生す
る熱を前記光学ユニットに伝達されるように保持するこ
とを特徴とする光学装置。』である。According to a fourth aspect of the present invention, there is provided an optical device comprising an optical unit in which a plurality of optical elements having flange portions are combined so that optical function surfaces of the optical elements have a gap. An optical device comprising: a driving unit that drives an optical unit by energization, and holds the heat generated by the driving unit so as to be transferred to the optical unit. ].
【００１６】この請求項４に記載の発明によれば、駆動
手段が発生する熱を光学ユニットに伝達して保温するこ
とで、周囲の温度変化が生じても光学素子同士の光学機
能面間の間隙で水蒸気が生じることが軽減され、光学機
能面に結露することが防止され、あるいは抑制され、さ
らに曇ることが防止される。According to the invention described in claim 4, the heat generated by the driving means is transferred to the optical unit to retain the heat, so that even if the ambient temperature changes, the optical function surfaces of the optical elements can be separated from each other. Generation of water vapor in the gap is reduced, condensation on the optical functional surface is prevented or suppressed, and further clouding is prevented.
【００１７】[0017]
【発明の実施の形態】以下、この発明の実施の形態の光
学ユニット及び光学ユニットを有する光学装置について
図面を参照して説明する。DETAILED DESCRIPTION OF THE INVENTION An optical unit and an optical device having the optical unit according to an embodiment of the present invention will be described below with reference to the drawings.
【００１８】（第１の実施の形態）図１は光学装置の要
部構成を示す背面図、図２は図１のＩＩ−ＩＩ線に沿う
断面図である。(First Embodiment) FIG. 1 is a rear view showing the structure of the main part of an optical device, and FIG. 2 is a sectional view taken along the line II--II of FIG.
【００１９】光学装置１は、光学ユニット２を有する光
ピックアップ用の光学装置であり、光学装置１は、図示
しないレーザー光源、光学ユニット２及び保持部材３等
で構成されている。なお、７は光ディスクであり、７ａ
は光ディスクの透明保護層である。The optical device 1 is an optical device for an optical pickup having an optical unit 2, and the optical device 1 is composed of a laser light source, an optical unit 2 and a holding member 3 which are not shown. In addition, 7 is an optical disk, and 7a
Is a transparent protective layer of the optical disc.
【００２０】光学ユニット２は、第１光学素子４と第２
光学素子５で構成される。第１光学素子４は、２つの光
学機能面４ａ１４ａ２、光軸Ｚに対し垂直方向に突出し
たフランジ部４ｂ、第２光学素子５との当接面４ｆ、第
２光学素子との嵌合部４ｇ、保温部材３０との当接面４
ｍ、保温部材３０との嵌合部４ｎをそれぞれ有してい
る。また、第１光学素子４はプラスチック成形された正
のレンズである。The optical unit 2 includes a first optical element 4 and a second optical element 4.
It is composed of the optical element 5. The first optical element 4 has two optical function surfaces 4a14a2, a flange portion 4b protruding in a direction perpendicular to the optical axis Z, a contact surface 4f with the second optical element 5, and a fitting portion 4g with the second optical element. , Contact surface 4 with heat retaining member 30
m, and a fitting portion 4n with the heat retaining member 30. The first optical element 4 is a plastic-molded positive lens.
【００２１】第２光学素子５は、２つの光学機能面５ａ
１，５ａ２、光軸Ｚに対し垂直方向に突出したフランジ
部５ｂ、第１光学素子４との当接面５ｆ、第１光学素子
４との嵌合部５ｇを有している。また、第２光学素子５
はプラスチック成形された正のレンズである。The second optical element 5 has two optical function surfaces 5a.
1, 5a2, a flange portion 5b protruding in the direction perpendicular to the optical axis Z, a contact surface 5f with the first optical element 4, and a fitting portion 5g with the first optical element 4. In addition, the second optical element 5
Is a plastic molded positive lens.
【００２２】第１光学素子４と第２光学素子５は、フラ
ンジ部４ｂ，５ｂ同士が略全周にわたって嵌合してな
り、この嵌合部４ｇ，５ｇが密着されている。光学素子
同士の光学機能面４ａ２，５ａ１間の間隙２１が嵌合部
４ｇ，５ｇによって密閉状態になっている。In the first optical element 4 and the second optical element 5, the flange portions 4b and 5b are fitted over substantially the entire circumference, and the fitting portions 4g and 5g are in close contact with each other. The gap 21 between the optical function surfaces 4a2 and 5a1 of the optical elements is sealed by the fitting portions 4g and 5g.
【００２３】このように、光学ユニット２は、光学素子
同士の光学機能面４ａ２，５ａ１間が間隙２１を有する
ように組み合わせ、保温部材３０により保温される。保
温部材３０は、ジャケット状に形成され、この保温部材
３０は保持部材３に保持されている。As described above, the optical unit 2 is assembled such that the optical functional surfaces 4a2 and 5a1 of the optical elements are combined with each other with the gap 21 and is kept warm by the heat retaining member 30. The heat insulating member 30 is formed in a jacket shape, and the heat insulating member 30 is held by the holding member 3.
【００２４】この実施の形態では、第１光学素子４のフ
ランジ部４ｂは、ジャケット状の保温部材３０によって
覆われて保温されていることから、周囲の温度変化が生
じても光学素子同士の光学機能面４ａ２，５ａ１間の間
隙２１で水蒸気が生じることが軽減され、間隙２１側の
光学機能面４ａ２，５ａ１に結露することが防止され、
あるいは抑制され、さらに曇ることが防止される。In this embodiment, since the flange portion 4b of the first optical element 4 is covered and kept warm by the jacket-like heat retaining member 30, even if a change in the ambient temperature occurs, the optical elements of the optical elements are not optically coupled to each other. Generation of water vapor in the gap 21 between the functional surfaces 4a2, 5a1 is reduced, and dew condensation on the optical functional surfaces 4a2, 5a1 on the gap 21 side is prevented,
Alternatively, it is suppressed and further clouding is prevented.
【００２５】図３は光学ユニットの他の実施の形態の要
部構成を示す断面図である。この実施の形態のジャケッ
ト状の保温部材３０は、第１光学素子４のフランジ部４
ｂと第２光学素子５のフランジ部５ｂを覆って保温する
ように構成されている。FIG. 3 is a sectional view showing the structure of the main part of another embodiment of the optical unit. The jacket-shaped heat retaining member 30 of this embodiment is provided with the flange portion 4 of the first optical element 4.
It is configured to cover b and the flange portion 5b of the second optical element 5 to retain heat.
【００２６】このジャケット状の保温部材３０は、図４
（ａ）に示すように、ウレタン、あるいはダイビングス
ーツ材の保温防湿材料で形成される。ウレタンを用いる
場合は、図４（ｂ）に示すように、ウレタンを抜き型で
抜いてジャケット状の保温部材３０が形成される。This jacket-shaped heat retaining member 30 is shown in FIG.
As shown in (a), it is made of urethane or a heat insulating and moistureproof material such as a diving suit material. When urethane is used, as shown in FIG. 4B, the urethane-shaped heat-retaining member 30 is formed by removing the urethane with a die.
【００２７】図５は光学ユニットの他の実施の形態の要
部構成を示す断面図である。この実施の形態の保温部材
３０は、第１光学素子４と第２光学素子５の間隙２１側
の非光学機能面４ａ２１，５ａ１１に設けている。この
この実施の形態の保温部材３０は、保温防湿材料を塗布
して設けられ、あるいはシート状の保温防湿材料を接着
して設けられる。FIG. 5 is a sectional view showing the structure of the main part of another embodiment of the optical unit. The heat retaining member 30 of this embodiment is provided on the non-optical function surfaces 4a21 and 5a11 of the first optical element 4 and the second optical element 5 on the side of the gap 21. The heat insulation member 30 of this embodiment is provided by applying a heat insulation / moisture-proof material or by adhering a sheet-like heat insulation / moisture prevention material.
【００２８】また、図１乃至図４に示す実施の形態にお
いて、第１光学素子４と第２光学素子５の間隙２１側の
非光学機能面４ａ２１，５ａ１１に保温部材３０を設け
てもよい。In addition, in the embodiment shown in FIGS. 1 to 4, a heat retaining member 30 may be provided on the non-optical functional surfaces 4a21 and 5a11 of the first optical element 4 and the second optical element 5 on the side of the gap 21.
【００２９】（第２の実施の形態）この実施の形態の光
学装置は、図６に示すように構成される。光学装置であ
る光ピックアップ装置１００は、光源である半導体レー
ザ１１０、偏光ビームスプリッタ１２０、コリメータレ
ンズ１３０、１／４波長板１４０、絞り１７０、対物レ
ンズ１６０、非点収差を発生する非点収差素子であるシ
リンドリカルレンズ１８０、光検出器３００、フォーカ
ス制御及びトラッキング制御のための２次元アクチュエ
ータ１５０などからなる。(Second Embodiment) The optical device of this embodiment is constructed as shown in FIG. The optical pickup device 100, which is an optical device, includes a semiconductor laser 110, which is a light source, a polarization beam splitter 120, a collimator lens 130, a quarter-wave plate 140, a diaphragm 170, an objective lens 160, and an astigmatism element that generates astigmatism. A cylindrical lens 180, a photodetector 300, a two-dimensional actuator 150 for focus control and tracking control, and the like.
【００３０】半導体レーザ１１０から出射した光束は、
偏光ビームスプリッタ１２０、コリメータレンズ１３
０、１／４波長板１４０を透過して円偏光の平行光束と
なる。この光束は、絞り１７０によって絞られ、対物レ
ンズ１６０により光ディスク２００の透明基板２１０を
介して情報記録面２２０上に集光される。そして、情報
記録面２２０で情報ビットにより変調されて反射した光
束は、再び対物レンズ１６０、１／４波長板１４０、コ
リメータレンズ１３０を透過して偏光ビームスプリッタ
１２０に入射し、ここで反射してシリンドリカルレンズ
１８０により非点収差が与えられ光検出器３００上へ入
射し、光検出器３００から出力される信号を用いて光デ
ィスク２００に記録された情報の読み取り（再生）信号
が得られる。また、光検出器３００上でのスポットの形
状変化による光量分布変化を検出して、合焦検出やトラ
ック検出を行う。すなわち、光検出器３００からの出力
を用いて、ここでは図示しない演算処理回路によってフ
ォーカスエラー信号及びトラッキングエラー信号が生成
される。このフォーカスエラー信号に基づいて（２次元
アクチュエータ（フォーカス制御用）１５０が半導体レ
ーザ１１０からの光を光ディスク２００の情報記録面２
２０上に結像するように対物ンンズ１６０を光軸方向に
移動させ、トラッキングエラー信号に基づいて２次元ア
クチュエータ（トラッキング制御用）１５０が半導体レ
ーザ１１０からの光を所定のトラックに結像するように
対物レンズ１６０を光軸と垂直な方向に移動させる。The luminous flux emitted from the semiconductor laser 110 is
Polarization beam splitter 120, collimator lens 13
It passes through the 0, 1/4 wavelength plate 140 and becomes a circularly polarized parallel light beam. This light flux is narrowed down by the diaphragm 170, and is condensed by the objective lens 160 onto the information recording surface 220 via the transparent substrate 210 of the optical disc 200. Then, the light flux modulated by the information bits on the information recording surface 220 and reflected is again transmitted through the objective lens 160, the quarter-wave plate 140, and the collimator lens 130, enters the polarization beam splitter 120, and is reflected here. An astigmatism is given by the cylindrical lens 180, the light is incident on the photodetector 300, and a signal output from the photodetector 300 is used to obtain a read (reproduction) signal of information recorded on the optical disc 200. Further, by detecting a change in the light amount distribution due to a change in the shape of the spot on the photodetector 300, focus detection and track detection are performed. That is, using the output from the photodetector 300, a focus error signal and a tracking error signal are generated by an arithmetic processing circuit not shown here. Based on this focus error signal, the (two-dimensional actuator (for focus control) 150 transmits the light from the semiconductor laser 110 to the information recording surface 2 of the optical disc 200.
The objective lens 160 is moved in the optical axis direction so as to form an image on the surface 20, and the two-dimensional actuator (for tracking control) 150 forms an image of the light from the semiconductor laser 110 on a predetermined track based on the tracking error signal. Then, the objective lens 160 is moved in the direction perpendicular to the optical axis.
【００３１】この対物レンズ１６０は、フランジ部を有
する複数個の光学素子１６０ａ，１６０ｂを、この光学
素子同士の光学機能面間が間隙Ｄを有するように組み合
わせた光学ユニットＡで構成される。光学ユニットＡを
通電により駆動させる２次元アクチュエータ１５０であ
る駆動手段Ｂを備え、この駆動手段Ｂが発生する熱を熱
伝達部材Ｃを介して光学ユニットＡに伝達されるように
保持する。The objective lens 160 is composed of an optical unit A in which a plurality of optical elements 160a and 160b each having a flange portion are combined so that a gap D exists between the optical function surfaces of the optical elements. A drive unit B, which is a two-dimensional actuator 150 that drives the optical unit A by energization, is provided, and heat generated by the drive unit B is held so as to be transferred to the optical unit A via the heat transfer member C.
【００３２】このように、駆動手段Ｂが発生する熱を光
学ユニットＡに伝達して保温することで、周囲の温度変
化が生じても光学素子同士の光学機能面間の間隙Ｄで水
蒸気が生じることが軽減され、光学機能面に結露するこ
とが防止され、あるいは抑制され、さらに曇ることが防
止される。As described above, by transmitting the heat generated by the driving means B to the optical unit A to retain the heat, water vapor is generated in the gap D between the optical function surfaces of the optical elements even if the ambient temperature changes. It is reduced, the condensation on the optical function surface is prevented or suppressed, and the clouding is further prevented.
【００３３】[0033]
【発明の効果】前記したように、請求項１乃至請求項３
に記載の発明では、保温部材によって保温することで周
囲の温度変化が生じても光学素子同士の光学機能面間の
間隙で水蒸気が生じることが軽減され、光学機能面に結
露することが防止され、あるいは抑制され、さらに曇る
ことが防止される。As described above, the first to third aspects are provided.
In the invention described in (1), even if the temperature is kept by the heat insulating member, the generation of water vapor in the gap between the optical functional surfaces of the optical elements is reduced, and the condensation on the optical functional surface is prevented. Or, it is suppressed, and further clouding is prevented.
【００３４】また、請求項４に記載の発明では、駆動手
段が発生する熱を光学ユニットに伝達して保温すること
で、周囲の温度変化が生じても光学素子同士の光学機能
面間の間隙で水蒸気が生じることが軽減され、光学機能
面に結露することが防止され、あるいは抑制され、さら
に曇ることが防止される。According to the invention described in claim 4, the heat generated by the driving means is transferred to the optical unit to retain the heat, so that the gap between the optical functional surfaces of the optical elements can be maintained even if the ambient temperature changes. The generation of water vapor is reduced, condensation on the optically functional surface is prevented or suppressed, and further clouding is prevented.
【図１】光学装置の要部構成を示す背面図である。FIG. 1 is a rear view showing the main configuration of an optical device.
【図２】図１のＩＩ−ＩＩ線に沿う断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
【図３】光学ユニットの他の実施の形態の要部構成を示
す断面図である。FIG. 3 is a cross-sectional view showing a main part configuration of another embodiment of an optical unit.
【図４】ジャケット状の保温部材を示す図である。FIG. 4 is a diagram showing a jacket-shaped heat retaining member.
【図５】光学ユニットの他の実施の形態の要部構成を示
す断面図である。FIG. 5 is a cross-sectional view showing a main part configuration of another embodiment of the optical unit.
【図６】光学装置の構成を示す図である。FIG. 6 is a diagram showing a configuration of an optical device.
１ 光学装置 ２ 光学ユニット ３ 保持部材 ４ 第１光学素子 ５ 第２光学素子 ４ａ１，４ａ２，５ａ１，５ａ２ 光学機能面 ４ｂ，５ｂ フランジ部 ４ｇ，５ｇ 嵌合部 ２１ 間隙 ３０ 保温部材 Ａ 光学ユニット Ｂ 駆動手段 Ｃ 熱伝達部材 Ｄ 間隙 Ｚ 光軸 1 Optical device 2 Optical unit 3 holding member 4 First optical element 5 Second optical element 4a1, 4a2, 5a1, 5a2 Optical functional surface 4b, 5b Flange part 4g, 5g fitting part 21 Gap 30 Thermal insulation A optical unit B drive means C heat transfer member D gap Z optical axis
───────────────────────────────────────────────────── フロントページの続き (72)発明者 荒井 則一 東京都八王子市石川町2970 コニカ株式会 社内 (72)発明者 本田 浩司 東京都八王子市石川町2970 コニカ株式会 社内 (72)発明者 本田 裕一 東京都八王子市石川町2970 コニカ株式会 社内 (72)発明者 新 勇一 東京都日野市さくら町１番地 コニカ株式 会社内 Ｆターム(参考） 2H044 AB10 AB24 AB25 AD02 2H087 KA13 LA01 NA17 PA02 PA17 PB02 QA02 QA05 QA12 QA21 QA31 QA41 RA42 UA01 5D119 AA32 BA01 JA49 JC06 MA08 5D789 AA32 BA01 JA49 JC06 MA08 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Noriichi Arai 2970 Ishikawa-cho, Hachioji-shi, Tokyo Konica Stock Association In-house (72) Inventor Koji Honda 2970 Ishikawa-cho, Hachioji-shi, Tokyo Konica Stock Association In-house (72) Inventor Yuichi Honda 2970 Ishikawa-cho, Hachioji-shi, Tokyo Konica Stock Association In-house (72) Inventor Yuichi Shin Konica Stock, 1 Sakura-cho, Hino City, Tokyo In the company F-term (reference) 2H044 AB10 AB24 AB25 AD02 2H087 KA13 LA01 NA17 PA02 PA17 PB02 QA02 QA05 QA12 QA21 QA31 QA41 RA42 UA01 5D119 AA32 BA01 JA49 JC06 MA08 5D789 AA32 BA01 JA49 JC06 MA08
Claims (4)
この光学素子同士の光学機能面間が間隙を有するように
組み合わせた光学ユニットにおいて、 前記フランジ部及び／または前記光学素子の非光学機能
面に、保温部材を設けたことを特徴とする光学ユニッ
ト。1. A plurality of optical elements having a flange portion,
In the optical unit in which the optical functional surfaces of the optical elements are combined so as to have a gap therebetween, a heat retaining member is provided on the flange portion and / or the non-optical functional surface of the optical element.
からなることを特徴とする請求項１に記載の光学ユニッ
ト。2. The optical unit according to claim 1, wherein the heat retaining member is made of urethane or a heat retaining / moisture proof material.
ユニットを保持する保持部材を備えたことを特徴とする
光学装置。3. An optical device comprising a holding member for holding the optical unit according to claim 1 or 2.
この光学素子同士の光学機能面間が間隙を有するように
組み合わせた光学ユニットを備える光学装置において、 前記光学ユニットを通電により駆動させる駆動手段を備
え、この駆動手段が発生する熱を前記光学ユニットに伝
達されるように保持することを特徴とする光学装置。4. A plurality of optical elements having a flange portion,
In an optical device including an optical unit in which optical function surfaces of the optical elements are combined with each other, a drive unit for driving the optical unit by energization is provided, and heat generated by the drive unit is applied to the optical unit. An optical device, characterized in that it is held so as to be transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001264336A JP2003075703A (en) | 2001-08-31 | 2001-08-31 | Optical unit and optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001264336A JP2003075703A (en) | 2001-08-31 | 2001-08-31 | Optical unit and optical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003075703A true JP2003075703A (en) | 2003-03-12 |
Family
ID=19090959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001264336A Pending JP2003075703A (en) | 2001-08-31 | 2001-08-31 | Optical unit and optical device |
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| Country | Link |
|---|---|
| JP (1) | JP2003075703A (en) |
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| US9891539B2 (en) | 2005-05-12 | 2018-02-13 | Nikon Corporation | Projection optical system, exposure apparatus, and exposure method |
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| JP2008233237A (en) * | 2007-03-16 | 2008-10-02 | Sumitomo Electric Ind Ltd | Optical member, imaging apparatus, and lens barrel for camera mounted in vehicle |
| US10101666B2 (en) | 2007-10-12 | 2018-10-16 | Nikon Corporation | Illumination optical apparatus, exposure apparatus, and device manufacturing method |
| US9341954B2 (en) | 2007-10-24 | 2016-05-17 | Nikon Corporation | Optical unit, illumination optical apparatus, exposure apparatus, and device manufacturing method |
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