JPH0694957A - Lens holding structure - Google Patents
Lens holding structureInfo
- Publication number
- JPH0694957A JPH0694957A JP4269166A JP26916692A JPH0694957A JP H0694957 A JPH0694957 A JP H0694957A JP 4269166 A JP4269166 A JP 4269166A JP 26916692 A JP26916692 A JP 26916692A JP H0694957 A JPH0694957 A JP H0694957A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- contact
- holding structure
- ring
- elastic member
- 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.)
- Granted
Links
Landscapes
- Lens Barrels (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光学機器のレンズ保持
構造、特にレンズ表面を変形させずにレンズを保持する
保持構造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 holding structure for optical equipment, and more particularly to a holding structure for holding a lens without deforming the lens surface.
【０００２】[0002]
【従来の技術】従来のレンズ保持方法では、レンズ表面
と、レンズ保持枠は非常に少ない面で接触していた。例
えば、次のような保持方法がある。 レンズ枠に押さえ環を螺合して押さえる方法。 レンズ枠に接着剤で接着保持する方法。 レンズ枠に直接カシメ留めする方法。2. Description of the Related Art In the conventional lens holding method, the lens surface and the lens holding frame are in contact with each other with very few surfaces. For example, there are the following holding methods. A method in which a retaining ring is screwed onto the lens frame to retain it. A method of holding the lens frame with an adhesive. A method of crimping directly to the lens frame.
【０００３】これらのレンズ保持方法のうち、は大孔
径のレンズには接着力が弱く、小さなレンズに用いられ
る保持方法であり、も大孔径のレンズには使用でき
ず、小さなレンズに用いられる保持方法である。Among these lens holding methods, one of the holding methods is a holding method used for a small lens because it has a weak adhesive force to a lens having a large hole diameter, and cannot be used for a lens having a large hole diameter, and is used for a small lens. Is the way.
【０００４】図５は従来の押さえ環を螺合して押える保
持構造を示す説明図であり、図６は図５のレンズへの当
接部分を示す説明図である。FIG. 5 is an explanatory view showing a conventional holding structure for screwing and pressing a pressing ring, and FIG. 6 is an explanatory view showing a contact portion with a lens of FIG.
【０００５】図に示すように、押さえ環を螺合して押さ
える従来のレンズ保持構造では、鏡筒５２にレンズ５１
を装入するよう鏡筒５２はレンズ５１の外径と略同一の
内径を有する構造となっている。この鏡筒５２の一端部
にはレンズ５１の外径よりも小径の端縁部５５が形成さ
れ、鏡筒５２の内径と端縁部５５との境界の段差がレン
ズ５１と接触する鏡筒接触部５４となる。As shown in the figure, in the conventional lens holding structure in which a pressing ring is screwed and pressed, the lens barrel 52 is attached to the lens 51.
The lens barrel 52 has a structure having an inner diameter substantially the same as the outer diameter of the lens 51. An end edge portion 55 having a diameter smaller than the outer diameter of the lens 51 is formed at one end portion of the lens barrel 52, and the step of the boundary between the inner diameter of the lens barrel 52 and the end edge portion 55 contacts the lens 51. It becomes part 54.
【０００６】また、鏡筒５２の他端部には、内径の周囲
にネジ山が形成され、このネジ山に螺合し、レンズ１の
外径よりも小さい押さえ環５３が螺着される。この押さ
え環５３の内側の端縁がレンズ５１と接触する押さえ環
接触部５６となる。At the other end of the lens barrel 52, a screw thread is formed around the inner diameter, and a screw ring 53 smaller than the outer diameter of the lens 1 is screwed onto the screw thread. The inner edge of the pressing ring 53 serves as a pressing ring contact portion 56 that contacts the lens 51.
【０００７】押さえ環５３の螺着により、レンズ５１は
押さえ環接触部５６と、鏡筒接触部５４とで挾持され、
鏡筒５２に保持されることとなる。When the pressing ring 53 is screwed, the lens 51 is held between the pressing ring contact portion 56 and the lens barrel contact portion 54,
It will be held by the lens barrel 52.
【０００８】[0008]
【発明が解決しようとする課題】上述した保持構造で
は、レンズ５１と接触している鏡筒接触部５４と押さえ
環接触部５６とが、光軸を含む断面で見れば点である
（図６に示すように、光軸方向から見れば線５７であ
る）ため、強く押さえ環５３を螺着した場合には、この
各接触部のみにレンズ５１を保持するための応力が集中
して働く。このため、レンズ５１表面が変形し、レンズ
の集光精度が低下してしまう。In the above-mentioned holding structure, the lens barrel contact portion 54 and the retaining ring contact portion 56 which are in contact with the lens 51 are points when seen in a cross section including the optical axis (FIG. 6). Since the line 57 is seen from the direction of the optical axis), when the pressing ring 53 is strongly screwed, the stress for holding the lens 51 concentrates only on the contact portions. Therefore, the surface of the lens 51 is deformed, and the condensing accuracy of the lens is reduced.
【０００９】また、逆に螺着が弱い場合には、レンズ５
１がぐらついて精度が低下してしまう。従って、押さえ
環５３の螺着の際には、微妙な螺着加減が必要となり、
熟練を要すものであった。On the contrary, when the screwing is weak, the lens 5
1 wobbles and the accuracy decreases. Therefore, when screwing the pressing ring 53, a slight screwing adjustment is required,
It required skill.
【００１０】そこで、本発明は、熟練を要さずとも、レ
ンズ表面を変形させずに、レンズを確実に保持すること
ができるレンズ保持構造を得ることを目的とする。Therefore, an object of the present invention is to provide a lens holding structure capable of holding the lens securely without deforming the lens surface without requiring skill.
【００１１】[0011]
【課題を解決するための手段】本請求項１に記載の発明
に係るレンズ保持構造では、レンズの両周縁部を両側面
から挟み込んで固定するレンズ保持構造において、前記
レンズ保持構造のレンズに当接する部分の表面形状がレ
ンズ周縁表面に沿った表面形状を有したものである。In the lens holding structure according to the present invention as defined in claim 1, in a lens holding structure in which both peripheral edge portions of the lens are sandwiched and fixed from both side surfaces, the lens of the lens holding structure is abutted. The surface shape of the contacting portion has a surface shape along the lens peripheral surface.
【００１２】また、本請求項２に記載の発明に係るレン
ズ保持構造では、前記表面形状がレンズ周縁表面に沿っ
た曲面形状であるものである。In the lens holding structure according to the second aspect of the present invention, the surface shape is a curved surface shape along the lens peripheral surface.
【００１３】更に、本請求項３に記載の発明に係るレン
ズ保持構造では、前記レンズ保持構造が、前記レンズと
当接する弾性部材と、該弾性部材を支持する金属部材と
より構成されているものである。Further, in the lens holding structure according to the invention as defined in claim 3, the lens holding structure is composed of an elastic member that abuts on the lens and a metal member that supports the elastic member. Is.
【００１４】また、本請求項４に記載の発明に係るレン
ズ保持構造では、前記レンズが、前記金属部材と前記弾
性部材との両方に接触し、前記レンズと前記金属部材と
の接触面の応力σ1 と、前記レンズと前記弾性部材との
接触面の応力σ2 との関係が、σ1 ＜σ2 であるもので
ある。Further, in the lens holding structure according to the invention described in claim 4, the lens is in contact with both the metal member and the elastic member, and the stress on the contact surface between the lens and the metal member is stressed. and sigma 1, the relationship between the stress sigma 2 of contact surface between the elastic member and the lens, are those wherein σ 1 <σ 2.
【００１５】[0015]
【作用】本発明においては、レンズ周縁部に当接する部
分の表面形状がレンズ周縁表面に沿った表面形状を有し
たものであるため、当接する部分は光軸を含む断面（後
述する実施例の図１及び図３参照）で見れば線になる
（光軸方向から見れば面である（後述する実施例の図２
及び図４参照））。In the present invention, since the surface shape of the portion that abuts on the lens peripheral portion has a surface shape along the lens peripheral surface, the abutting portion has a cross section including the optical axis (see the embodiment described later). Seen in FIGS. 1 and 3, it becomes a line (a surface when seen from the optical axis direction) (see FIG. 2 of an embodiment described later).
And FIG. 4)).
【００１６】具体的には、前記表面形状がレンズ周縁表
面に沿った曲面形状であるものである。これにより、レ
ンズを保持するための応力を広く分散することができ、
レンズ表面の変形を軽減することができる。Specifically, the surface shape is a curved surface shape along the lens peripheral surface. Thereby, the stress for holding the lens can be widely dispersed,
It is possible to reduce the deformation of the lens surface.
【００１７】更に具体的には、前記レンズ保持構造が前
記レンズと当接する弾性部材と該弾性部材を支持する金
属部材とより構成されているものであるため、ある程度
強く押さえ環を螺着した場合にも、弾性部材が変形し、
レンズの表面を変形させることがない。More specifically, since the lens holding structure is composed of an elastic member that comes into contact with the lens and a metal member that supports the elastic member, when the pressing ring is screwed to some extent strongly. Also, the elastic member is deformed,
Does not deform the surface of the lens.
【００１８】また、前記レンズが、前記金属部材と前記
弾性部材との両方に接触する場合にも、前記レンズと前
記金属部材との接触面の応力σ1 と、前記レンズと前記
弾性部材との接触面の応力σ2 との関係が、σ1 ＜σ2
とすることにより、レンズに対する応力が分散され、レ
ンズの表面を変形させることがない。Also, when the lens contacts both the metal member and the elastic member, the stress σ 1 on the contact surface between the lens and the metal member, and the contact between the lens and the elastic member. The relationship with the stress σ 2 on the contact surface is σ 1 <σ 2
By so doing, the stress on the lens is dispersed and the surface of the lens is not deformed.
【００１９】[0019]
【実施例】図１は本発明のレンズ保持構造の一実施例の
構成を示す説明図であり、図２は図１のレンズへの当接
部分を示す説明図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view showing the construction of an embodiment of the lens holding structure of the present invention, and FIG. 2 is an explanatory view showing the contact portion with the lens of FIG.
【００２０】図に示す通り、本実施例のレンズ保持構造
では、鏡筒１２にレンズ１１を装入するよう鏡筒１２は
レンズ１１の外径と略同一の内径を有する構造となって
いる。この鏡筒１２の一端部には、レンズ１１の外径よ
りも小径の端縁部１５が形成され、鏡筒１２の内径と端
縁部１５との境界の段差がレンズ１１と接触する鏡筒接
触部１４となる。As shown in the figure, in the lens holding structure of this embodiment, the lens barrel 12 has a structure having an inner diameter substantially the same as the outer diameter of the lens 11 so that the lens 11 can be inserted into the lens barrel 12. An end edge portion 15 having a diameter smaller than the outer diameter of the lens 11 is formed at one end of the lens barrel 12, and a step at the boundary between the inner diameter of the lens barrel 12 and the end edge portion 15 contacts the lens 11. It becomes the contact portion 14.
【００２１】この鏡筒接触部１４の表面形状がレンズ周
縁表面に沿った表面形状を有するようにテーパ状に曲面
削除加工されている。The surface of the lens barrel contact portion 14 is tapered so as to have a surface shape along the peripheral surface of the lens.
【００２２】また、鏡筒１２の他端部には、内径の周囲
にネジ山が形成され、このネジ山に螺合し、レンズ１１
の外径よりも小さい押さえ環１３が螺着される。この押
さえ環１３の内側の端縁がレンズ１１と接触する押さえ
環接触部１６となる。この押さえ環接触部１６の表面形
状がレンズ周縁表面に沿った表面形状を有するようにテ
ーパ状に曲面削除加工されている。At the other end of the lens barrel 12, a screw thread is formed around the inner diameter, and the screw thread is engaged with this screw thread to form the lens 11
A pressing ring 13 having a smaller outer diameter than that is screwed. The inner edge of the pressing ring 13 serves as a pressing ring contact portion 16 that contacts the lens 11. The pressing ring contact portion 16 has a tapered curved surface so as to have a surface shape along the lens peripheral surface.
【００２３】この押さえ環１３のレンズ側の端縁である
押さえ環接触部１６が、押さえ環１３の回転に伴ないレ
ンズと接触し、レンズ１１を挾んで対向する鏡筒接触部
１４と、押さえ環１４とでレンズ１１は挾持され、鏡筒
１２内に保持されることとなる。A holding ring contact portion 16 which is an end edge of the holding ring 13 on the lens side comes into contact with the lens as the holding ring 13 rotates, and the lens barrel contact portion 14 that opposes the lens 11 is held. The lens 11 is held by the ring 14 and held in the lens barrel 12.
【００２４】上述の保持構造では、レンズ１１と接触し
ている鏡筒接触部１４と押さえ環接触部１６とが、レン
ズ周縁部に当接する部分の表面形状がレンズ周縁表面に
沿った表面形状を有したものであるため、図２に示すよ
うにレンズ１１との接触部分１７は光軸方向から見れば
面となる。このため、強く押さえ環１３を螺着した場合
にも、レンズ１１を保持するための応力を広く分散する
ことができ、レンズ１１表面の変形を軽減することがで
きる。In the above-mentioned holding structure, the lens barrel contact portion 14 and the pressing ring contact portion 16 which are in contact with the lens 11 have a surface shape in which the portions abutting the lens peripheral portion have a surface shape along the lens peripheral surface. Since it is included, the contact portion 17 with the lens 11 becomes a surface when viewed from the optical axis direction as shown in FIG. Therefore, even when the pressing ring 13 is strongly screwed, the stress for holding the lens 11 can be widely dispersed, and the deformation of the surface of the lens 11 can be reduced.
【００２５】図３は本発明のレンズ保持構造の別の実施
例の構成を示す説明図である。図４は図３のレンズへの
当接部分を示す説明図である。FIG. 3 is an explanatory view showing the constitution of another embodiment of the lens holding structure of the present invention. FIG. 4 is an explanatory view showing a contact portion with the lens of FIG.
【００２６】図に示す通り、本実施例のレンズ保持構造
では、鏡筒３２にレンズ３１を装入するよう鏡筒３２は
レンズ３１の外径と略同一の内径を有する構造となって
いる。この鏡筒３２の一端部には、レンズ３１の外径よ
りも小径の端縁部３５が形成され、鏡筒３２の内径と端
縁部３５との境界の段差がレンズ３１と接触する鏡筒接
触部３４となる。As shown in the figure, in the lens holding structure of this embodiment, the lens barrel 32 has a structure having an inner diameter substantially the same as the outer diameter of the lens 31 so that the lens 31 can be inserted into the lens barrel 32. An end edge portion 35 having a diameter smaller than the outer diameter of the lens 31 is formed at one end of the lens barrel 32, and a step at the boundary between the inner diameter of the lens barrel 32 and the end edge portion 35 contacts the lens 31. It becomes the contact portion 34.
【００２７】また、前記段差に合成樹脂製の第１の弾性
部材３４’を介してレンズ３１と接触するようにも構成
されている。この場合には、レンズ３１と鏡筒接触部３
４との接触面の応力σ1 と、レンズ３１と第１の弾性部
材３４’との接触面の応力σ2 との関係が、σ1 ＜σ2
とするように、第１の弾性部材３４’の材質、及び、形
状を設計する。Further, the step is configured to come into contact with the lens 31 via the first elastic member 34 'made of synthetic resin. In this case, the lens 31 and the lens barrel contact portion 3
4 and the stress sigma 1 of the contact surface with the relationship between the stress sigma 2 of the contact surface between the lens 31 and the first elastic member 34 'is, sigma 1 <sigma 2
The material and shape of the first elastic member 34 ′ are designed so that
【００２８】また、鏡筒３２の他端部には、内径の周囲
にネジ山が形成され、このネジ山に螺合し、レンズ３１
の外径よりも小さい押さえ環３３が螺着される。この押
さえ環３３の内側の端縁とレンズ３１との間には第２の
弾性部材３６が装着されている。At the other end of the lens barrel 32, a screw thread is formed around the inner diameter, and the lens 31 is screwed into the screw thread.
A pressing ring 33 having a smaller outer diameter than that is screwed. A second elastic member 36 is mounted between the inner edge of the pressing ring 33 and the lens 31.
【００２９】この押さえ環３３のレンズ側の端縁に装着
された第２の弾性部材３６が、押さえ環３３の回転に伴
ないレンズと接触し、レンズ３１を挾んで対向する鏡筒
接触部３４及び第１の弾性部材３４’と、押さえ環１４
の第２の弾性部材３６とでレンズ３１は挾持され、鏡筒
３２内に保持されることとなる。The second elastic member 36 attached to the lens-side edge of the holding ring 33 comes into contact with the lens as the holding ring 33 rotates, and the lens barrel contact portion 34 that faces the lens 31 is sandwiched between them. And the first elastic member 34 'and the pressing ring 14
The lens 31 is held by the second elastic member 36 and is held in the lens barrel 32.
【００３０】上述の保持構造では、レンズ３１と鏡筒接
触部３４との接触面の応力σ1 と、レンズ３１と第１の
弾性部材３４’との接触面の応力σ2 との関係が、σ1
＜σ2 であり、しかも、レンズ３１と接触している鏡筒
接触部３４及び第１の弾性部材３４’と、第２の弾性部
材３６とが、レンズ周縁部に当接する部分の表面形状が
レンズ周縁表面に沿った表面形状を有したものであるた
め、図４に示すようにレンズ３１との接触部分３７は光
軸方向から見れば面となる。In the holding structure described above, the relationship between the stress σ 1 on the contact surface between the lens 31 and the lens barrel contact portion 34 and the stress σ 2 on the contact surface between the lens 31 and the first elastic member 34 'is σ 1
<Σ 2 and the lens barrel contact portion 34 and the first elastic member 34 ′ that are in contact with the lens 31 and the second elastic member 36 have a surface shape of a portion that abuts on the lens peripheral edge portion. Since it has a surface shape along the lens peripheral surface, the contact portion 37 with the lens 31 becomes a surface when viewed from the optical axis direction as shown in FIG.
【００３１】このため、強く押さえ環３３を螺着した場
合にも、レンズ３１を保持するための応力を広く分散す
ることができ、レンズ３１表面の変形を軽減することが
できる。尚、第１の弾性部材３４’及び第２の弾性部材
３６の形状は、前述の各応力の関係が満足されるなら
ば、球面でも非球面でも構わない。Therefore, even when the pressing ring 33 is strongly screwed, the stress for holding the lens 31 can be widely dispersed, and the deformation of the surface of the lens 31 can be reduced. The shapes of the first elastic member 34 ′ and the second elastic member 36 may be spherical or aspherical as long as the above-mentioned stress relationships are satisfied.
【００３２】[0032]
【発明の効果】本発明は以上説明したとおり、レンズ保
持構造のレンズ周縁部に当接する部分の表面形状がレン
ズ周縁表面に沿った表面形状を有したものであるため、
具体的には、前記表面形状がレンズ周縁表面に沿った曲
面形状であるものであるため、レンズを保持するための
応力を広く分散することができ、レンズ表面の変形を軽
減することができる。As described above, according to the present invention, since the surface shape of the portion of the lens holding structure that abuts the lens peripheral portion has the surface shape along the lens peripheral surface,
Specifically, since the surface shape is a curved shape along the peripheral surface of the lens, the stress for holding the lens can be widely dispersed, and the deformation of the lens surface can be reduced.
【００３３】更に具体的には、前記レンズ保持構造が前
記レンズと当接する弾性部材と該弾性部材を支持する金
属部材とより構成されているものであるため、ある程度
強く押さえ環を螺着した場合にも、弾性部材が変形し、
レンズの表面を変形させることがない。More specifically, since the lens holding structure is composed of an elastic member that contacts the lens and a metal member that supports the elastic member, when the pressing ring is screwed to some extent Also, the elastic member is deformed,
Does not deform the surface of the lens.
【００３４】また、前記レンズが、前記金属部材と前記
弾性部材との両方に接触する場合にも、前記レンズと前
記金属部材との接触面の応力σ1 と、前記レンズと前記
弾性部材との接触面の応力σ2 との関係が、σ1 ＜σ2
とすることにより、レンズに対する応力が分散され、レ
ンズの表面を変形させることがない等の効果がある。Also, when the lens contacts both the metal member and the elastic member, the stress σ 1 on the contact surface between the lens and the metal member, and the stress between the lens and the elastic member. The relationship with the stress σ 2 on the contact surface is σ 1 <σ 2
With the above, the stress on the lens is dispersed, and the surface of the lens is not deformed.
【図１】本発明のレンズ保持構造の一実施例の構成を示
す説明図である。FIG. 1 is an explanatory diagram showing a configuration of an embodiment of a lens holding structure of the present invention.
【図２】図１のレンズへの当接部分を示す説明図であ
る。FIG. 2 is an explanatory view showing a contact portion with the lens of FIG.
【図３】本発明のレンズ保持構造の別の実施例の構成を
示す説明図である。FIG. 3 is an explanatory diagram showing the configuration of another embodiment of the lens holding structure of the present invention.
【図４】図３のレンズへの当接部分を示す説明図であ
る。FIG. 4 is an explanatory view showing a contact portion with the lens of FIG.
【図５】従来の押さえ環を螺合して押える保持構造を示
す説明図である。FIG. 5 is an explanatory view showing a conventional holding structure for screwing and pressing a pressing ring.
【図６】図５のレンズへの当接部分を示す説明図であ
る。FIG. 6 is an explanatory view showing a contact portion with the lens of FIG.
１１，３１…レンズ、 １２，３２…鏡筒、 １３，３３…押さえ環 １４，３４…鏡筒接触部 ３４’ …第１の弾性部材 １５，３５…端縁部 １６ …押さえ環接触部 ３６ …第２の弾性部材 １７，３７…接触面 11, 31 ... Lens, 12, 32 ... Lens barrel, 13, 33 ... Holding ring 14, 34 ... Lens barrel contact portion 34 '... First elastic member 15, 35 ... End edge portion 16 ... Holding ring contact portion 36 ... Second elastic member 17, 37 ... Contact surface
Claims (4)
で固定するレンズ保持構造において、 前記レンズ保持構造のレンズに当接する部分の表面形状
がレンズ周縁表面に沿った表面形状を有したことを特徴
とするレンズ保持構造。1. In a lens holding structure for sandwiching and fixing both peripheral edge portions of a lens from both side surfaces, a surface shape of a portion of the lens holding structure that abuts the lens has a surface shape along a lens peripheral surface. Characteristic lens holding structure.
曲面形状であることを特徴とする請求項１に記載のレン
ズ保持構造。2. The lens holding structure according to claim 1, wherein the surface shape is a curved surface shape along the lens peripheral surface.
接する弾性部材と、該弾性部材を支持する金属部材とよ
り構成されていることを特徴とする請求項１に記載のレ
ンズ保持構造。3. The lens holding structure according to claim 1, wherein the lens holding structure includes an elastic member that comes into contact with the lens and a metal member that supports the elastic member.
部材との双方に接触し、 前記レンズと前記金属部材との接触面の応力σ1 と、前
記レンズと前記弾性部材との接触面の応力σ2 との関係
が、σ1 ＜σ2 であることを特徴とする請求項３に記載
のレンズ保持構造。4. The lens is in contact with both the metal member and the elastic member, the stress σ 1 on the contact surface between the lens and the metal member, and the contact surface between the lens and the elastic member. The lens holding structure according to claim 3, wherein the relationship with the stress σ 2 is σ 1 <σ 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26916692A JP3345920B2 (en) | 1992-09-14 | 1992-09-14 | Lens holding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26916692A JP3345920B2 (en) | 1992-09-14 | 1992-09-14 | Lens holding structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0694957A true JPH0694957A (en) | 1994-04-08 |
| JP3345920B2 JP3345920B2 (en) | 2002-11-18 |
Family
ID=17468602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26916692A Expired - Fee Related JP3345920B2 (en) | 1992-09-14 | 1992-09-14 | Lens holding structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3345920B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7002759B2 (en) | 2003-03-20 | 2006-02-21 | Pentax Corporation | Lens unit for multibeam scanning device |
| US7345832B2 (en) | 2004-11-29 | 2008-03-18 | Konica Minolta Holdings, Inc. | Optical element holding structure, optical element lens-barrel and optical communication module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5610827B2 (en) | 2010-04-21 | 2014-10-22 | キヤノン株式会社 | Holding device, optical device and astronomical telescope |
-
1992
- 1992-09-14 JP JP26916692A patent/JP3345920B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7002759B2 (en) | 2003-03-20 | 2006-02-21 | Pentax Corporation | Lens unit for multibeam scanning device |
| US7345832B2 (en) | 2004-11-29 | 2008-03-18 | Konica Minolta Holdings, Inc. | Optical element holding structure, optical element lens-barrel and optical communication module |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3345920B2 (en) | 2002-11-18 |
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