JPH03122829A - Objective lens supporter - Google Patents
Objective lens supporterInfo
- Publication number
- JPH03122829A JPH03122829A JP1260758A JP26075889A JPH03122829A JP H03122829 A JPH03122829 A JP H03122829A JP 1260758 A JP1260758 A JP 1260758A JP 26075889 A JP26075889 A JP 26075889A JP H03122829 A JPH03122829 A JP H03122829A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- wire
- construction members
- lens holder
- frame
- 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
- 238000010276 construction Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、光学的に信号を読み出す為、あるいは書き込
む為の光ピツクアップ装置における対物レンズを変位自
在に支持する対物レンズ支持装置に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to an objective lens support device for movably supporting an objective lens in an optical pickup device for optically reading or writing signals.
（ロ）従来の技術
光ビームを用いて光学的に信号を読み出す為、あるいは
書き込む為の光ピツクアップ装置は、対物レンズが保持
されるレンズホルダーをフレームに変位自在に支持する
対物レンズ支持装置を備えており、該対物レンズ支持装
置を用いて光ビームを信号記録媒体の信号面上に合焦さ
せるフォーカシング制御及び光ビームを信号記録媒体の
信号面の信号トラックに追従させるトラッキング制御が
行える様に構成されている。(b) Conventional technology An optical pickup device for optically reading or writing signals using a light beam is equipped with an objective lens support device that movably supports a lens holder in which an objective lens is held on a frame. The objective lens support device is configured to perform focusing control for focusing the light beam on the signal surface of the signal recording medium and tracking control for causing the light beam to follow the signal track on the signal surface of the signal recording medium. has been done.
その様な対物レンズ支持装置としては、例えば特開昭６
１−１１５２４９号公報に示されている。前記対物レン
ズ支持装置は、複数本のワイヤーのそれぞれ一端をフレ
ームに固定し、他端をフレームに穿設された孔に挿入し
て前記複数本のワイヤーをフレームの両端間に張架する
と共に、前記複数本のワイヤーのそれぞれの中間部にレ
ンズホルダーを固定して対物レンズを変位自在に支持し
ている。この様にワイヤー等の伸縮性に乏しい架設部材
をフレームの両端間に張架して対物レンズを支持する対
物レンズ支持装置は、前記架設部材の長さ方向における
対物レンズの変位が妨げられ、前記架設部材の長さ方向
と直交する方向における対物レンズの変位がほとんど妨
げられないので、フォーカシング制御及びトラッキング
制御を行う為の２方向においては、対物レンズの安定し
た動きが期待出来る。As such an objective lens support device, for example, Japanese Patent Application Laid-open No. 6
1-115249. The objective lens support device fixes one end of each of the plurality of wires to the frame, inserts the other end into a hole bored in the frame, and stretches the plurality of wires between both ends of the frame, A lens holder is fixed to an intermediate portion of each of the plurality of wires to support the objective lens in a movable manner. As described above, in an objective lens support device that supports an objective lens by stretching a construction member with poor elasticity such as a wire between both ends of a frame, displacement of the objective lens in the length direction of the construction member is prevented, and the Since the displacement of the objective lens in the direction orthogonal to the length direction of the construction member is hardly hindered, stable movement of the objective lens can be expected in the two directions for performing focusing control and tracking control.
（ハ）発明が解決しようとする課題
ところで、対物レンズ支持装置においては、該対物レン
ズ支持装置の可動部分を総合した共振周波数の他に、対
物レンズ（レンズホルダー）をフレームに変位自在に支
持する部材自体が有する共振周波数で、光学情報を乱す
原因となる有害な回転運動であるピッチングが対物レン
ズに生じることが知られている。その為、前述の対物レ
ンズ支持装置においては、架設部材自体が有する共振周
波数で、対物レンズにピッチングが生じる。前記対物レ
ンズは、複数本の架設部材により支持される様に為され
ており、１つの架設部材の共振による影響は少ないが、
通常、前記複数本の架設部材は、形状、材質及び取付は
方が同一であり、同一周波数で同時に共振するので、そ
の共振による前記対物レンズのピッチングは無視出来な
いものとなる。(C) Problems to be Solved by the Invention By the way, in the objective lens support device, in addition to the resonance frequency that combines the movable parts of the objective lens support device, the objective lens (lens holder) is supported on the frame so as to be freely displaceable. It is known that pitching, which is a harmful rotational movement that causes disturbance of optical information, occurs in the objective lens at the resonant frequency of the member itself. Therefore, in the objective lens support device described above, pitching occurs in the objective lens at the resonant frequency that the construction member itself has. The objective lens is supported by a plurality of construction members, and the influence of resonance of one construction member is small;
Usually, the plurality of construction members have the same shape, material, and mounting, and resonate at the same frequency at the same time, so that the pitching of the objective lens due to the resonance cannot be ignored.
（ニ）課題を解決するための手段
本発明は、前述の点に鑑みて為されたもので、共振周波
数が異なる複数本の架設部材を組み合わせてレンズホル
ダーを支持する様にしている。(d) Means for Solving the Problems The present invention has been made in view of the above-mentioned points, and a lens holder is supported by combining a plurality of construction members having different resonance frequencies.
（＊）作用
本発明は、複数本の架設部材により対物レンズをフレー
ムに変位自在に支持している対物レンズ支持装置におい
て、複数本の架設部材が同一の周波数で同時に共振する
ことにより対物レンズのピッチングが大きなものになる
ことに着目し、複数本の架設部材を分散して共振させる
ことにより対物レンズのピッチングを抑制する様にした
ものである。(*) Effect The present invention is an objective lens support device in which an objective lens is movably supported on a frame by a plurality of construction members, and the objective lens is Focusing on the fact that pitching becomes large, pitching of the objective lens is suppressed by distributing and resonating a plurality of construction members.
（へ）実施例
第１図は本発明の一実施例を示す斜視図で、（１）は一
体成型された筒（１ａ）内に対物レンズ（２）が取り付
けられたレンズホルダー、（３）は対物レンズ（２）を
フォーカシング方向（Ａ−Ａ’方向）に駆動するべく前
記レンズホルダー（１）に装着されたフォーカシングフ
ィル、（４）は対物レンズ（２〉をトラッキング方向（
Ｂ−Ｂ’力方向に駆動するべく前記レンズホルダー（１
）に装着されたトラッキングコイル、（５）は一対の永
久磁石（６）及び（７）と該永久磁石（６）及び（７）
のそれぞれに付設きれたヨーク（８）及び（９）と、該
ヨーク（８）及び（９）のそれぞれの端間に架設された
プレート（１０）及び（１１）とから成り、磁界を形成
する磁気回路、（１２）は該磁気回路（５）が取り付け
られたフレーム、 （１３）は該フレーム（１２）に前
記レンズホルダー（１）を支持する為の４本のワイヤー
、（１４）は該ワイヤー（１３）の一端を固定する為の
プリント基板、（１５）は前記ワイヤー（１３）の他端
を摺動変位可能に支持する為の支持部材である。(f) Embodiment FIG. 1 is a perspective view showing an embodiment of the present invention, in which (1) is a lens holder in which an objective lens (2) is attached to an integrally molded cylinder (1a), (3) (4) is a focusing filter attached to the lens holder (1) to drive the objective lens (2) in the focusing direction (A-A'direction);
The lens holder (1
), the tracking coil (5) is a pair of permanent magnets (6) and (7);
It consists of yokes (8) and (9) attached to each of the yokes (8) and (9), and plates (10) and (11) installed between the respective ends of the yokes (8) and (9), and forms a magnetic field. A magnetic circuit, (12) a frame to which the magnetic circuit (5) is attached, (13) four wires for supporting the lens holder (1) on the frame (12), (14) a frame to which the magnetic circuit (5) is attached; A printed circuit board (15) is used to fix one end of the wire (13), and a supporting member (15) is used to slidably support the other end of the wire (13).
上述の如く構成された対物レンズ支持装置を組み立てる
場合、まず、フォーカシングコイル（３）及びトラッキ
ングフィル（４）が装着されたレンズホルダー（１）を
所定位置に仮設し、その後、あらかじめ一端をプリント
基板（１４）に半田付けした４本のワイヤー（１３）を
それぞれフレーム（１２）の外側からフレーム（１２）
の−実測の孔に挿入し、レンズホルダー（１）の取付部
（１ｂ）の孔に挿入する。そして、フレーム（１２）の
他方側の孔及び支持部材（１５）の挿入孔（１６）に挿
入した後、レンズホルダー（１）を磁気回路（５）の所
定位置に設定し、前記レンズホルダー（１）の取付部（
１ｂ）を４本のワイヤー（１３）に接着すれば組み立て
は完了する。この場合、フォーカシングフィル（３）及
びトラッキングコイル（４）は、巻回方向が互いに直交
する部分を有する様にレンズホルダー（１）に装着きれ
、磁界回路り）はその磁気ギャップ内の磁束が前記フォ
ーカシングコイル（３）及びトラッキングコイル（４）
の巻回方向の直交部分を貫ぬく様に配置されている。When assembling the objective lens support device configured as described above, first, the lens holder (1) to which the focusing coil (3) and tracking film (4) are attached is temporarily installed in a predetermined position, and then one end is attached to the printed circuit board in advance. The four wires (13) soldered to (14) are connected to the frame (12) from the outside of the frame (12).
- Insert it into the measured hole, and then insert it into the hole of the mounting part (1b) of the lens holder (1). After inserting the lens holder (1) into the hole on the other side of the frame (12) and the insertion hole (16) of the support member (15), the lens holder (1) is set at a predetermined position of the magnetic circuit (5), and the lens holder ( 1) Mounting part (
1b) to the four wires (13) to complete the assembly. In this case, the focusing filter (3) and the tracking coil (4) are mounted on the lens holder (1) so that the winding directions are perpendicular to each other, and the magnetic flux within the magnetic gap is Focusing coil (3) and tracking coil (4)
It is arranged so as to penetrate through the part perpendicular to the winding direction.
また、４本のワイヤー（１３）は、金属線、例えばリン
青銅の線材により構成されており、長さ方向に弾性を有
さないので、フレーム（１２）の両端間に張架される。Further, the four wires (13) are made of metal wires, for example, phosphor bronze wires, and have no elasticity in the length direction, so they are stretched between both ends of the frame (12).
そして、ワイヤー（１３）の一端は、それぞれプリント
基板（１４）に半田付けにより固定されているが、ワイ
ヤー（１３）の他端は、それぞれ支持部材（１５）の挿
入孔（１５ａ）内に挿入されることによりそれぞれのワ
イヤー（１３）の揺動に応じてそれぞれの挿入孔（１５
ａ）内を摺動し、ワイヤー（１３）の長さ方向に変位可
能に成きれている。その為、フォーカシングコイル（３
〉及びトラッキングフィル（４）に制御信号を供給する
ことにより対物レンズ（２）をフォーカシング方向（第
１図のＡ−Ａ’力方向及びトラッキング方向（第１図の
Ｂ−Ｂ’方向）に円滑に駆動することが出来る。One end of the wire (13) is fixed to the printed circuit board (14) by soldering, while the other end of the wire (13) is inserted into the insertion hole (15a) of the support member (15). As a result, each insertion hole (15) corresponds to the swing of each wire (13).
a) It is made to be able to slide inside and be displaced in the length direction of the wire (13). Therefore, focusing coil (3
> and the tracking filter (4) to smoothly move the objective lens (2) in the focusing direction (A-A' force direction in Figure 1) and in the tracking direction (B-B' direction in Figure 1). It can be driven to
ところで、プリント基板（１４）には、第２図に示す如
く、その４隅にそれぞれワイヤー（１３）の一端が挿入
され、半田付けにより取付けられる取付孔（１４ａ）乃
至（１４ｄ）が形成されている。そして、前記プリント
基板（１４）は、前記取付孔（１４ａ）乃至（１４ｄ）
がそれぞれ形成される部分において、強度が異なる様に
第２図の如き形状を有している。ちなみに、プリント基
板（１４）は、取付孔（１４ｇ） 、 （１４ｂ） 。By the way, as shown in FIG. 2, the printed circuit board (14) has mounting holes (14a) to (14d) formed in each of its four corners, into which one end of the wire (13) is inserted and attached by soldering. There is. The printed circuit board (14) has the mounting holes (14a) to (14d)
It has a shape as shown in FIG. 2 so that the strength differs in the portions where the two are formed. By the way, the printed circuit board (14) has mounting holes (14g) and (14b).
（１ｔａ＞ 、 （１４ｃ）の部分の順に強度が大と成
されている。また、前記プリント基板（１４）は、概ね
中央に形成された孔（１６）を介してフレーム（１２）
にネジ止めされるが、前記プリント基板（１４）は、第
３図に示す如く、フレーム（１２〉のネジ（１７）が螺
合される部分に設けられた突部（１８）により取付孔（
１４ａ）乃至（１４ｄ）の部分がフレーム（１２）面か
ら離間して固定される。その為、対物レンズ（２）が駆
動され、それぞれワイヤー（１３〉が揺動されると、そ
の揺動に応じてプリント基板（１４）のそれぞれの取付
孔（１４ａ）乃至（１４ｄ）部分も揺動諮れるから、そ
れぞれのワイヤー（１３）の揺動は、前記プリント基板
（１４）の取付孔（１４ａ）乃至＜１４ｄ）部分の動き
が関係して来る。The strength of the printed circuit board (14) is increased in the order of (1ta> and (14c)).The printed circuit board (14) is connected to the frame (12) through a hole (16) formed approximately in the center.
As shown in FIG. 3, the printed circuit board (14) is secured to the mounting hole (
Portions 14a) to (14d) are fixed apart from the frame (12) surface. Therefore, when the objective lens (2) is driven and the respective wires (13>) are swung, the respective mounting holes (14a) to (14d) of the printed circuit board (14) are also swung accordingly. Therefore, the swinging of each wire (13) is related to the movement of the mounting holes (14a) to <14d) of the printed circuit board (14).
したがって、ワイヤー（１３）は、それぞれ太さ及び長
さ等の形状が全て同一で、かつ材質が同一であっても、
それぞれ共振周波数が異なる。その為、前記ワイヤー（
１３）のそれぞれの共振による対物レンズ（２）のピッ
チングは、抑制される。Therefore, even if the wires (13) have the same shape such as thickness and length, and are made of the same material,
Each has a different resonance frequency. Therefore, the wire (
13) pitching of the objective lens (2) due to each resonance is suppressed.
尚、前述の実施例において、それぞれのワイヤー（１３
）が半田付けされるプリント基板（１４〉の形状を工夫
して、前記ワイヤー（１３）のそれぞれの共振周波数を
異ならせたが、本発明は、この方法に限定されることな
く、それぞれのワイヤー（１３）自体の材質を異ならせ
たり、それぞれのワイヤー（１３）の太さを異ならせた
りすることによりそれぞれのワイヤー（１３）の共振周
波数を異ならせても良い。In addition, in the above-mentioned embodiment, each wire (13
) was devised to make the shape of the printed circuit board (14) to which the wires (13) are soldered different so that the resonant frequencies of each of the wires (13) were different. However, the present invention is not limited to this method; (13) The resonant frequency of each wire (13) may be made different by making the material of the wire (13) different or by making the thickness of each wire (13) different.
また、実施例の如く、４本の架設部材（ワイヤー等）に
よりレンズホルダーを支持している場合、全ての架設部
材の共振周波数を互いに異ならせる必要は無く、２種類
の共振周波数を有する架設部材をそれぞれ２本ずつ使用
する等の方法も本発明の主旨を逸脱せず、この場合、隣
り合う架設部材を互いに異なる共振周波数にする為に対
角にある２本の架設部材同志をそれぞれ同一の共振周波
数にすると効果的である。In addition, when the lens holder is supported by four construction members (wires, etc.) as in the example, there is no need to make the resonance frequencies of all construction members different from each other, and there are two construction members having two types of resonance frequencies. A method such as using two of each diagonal construction member does not depart from the spirit of the present invention, and in this case, in order to make the adjacent construction members have different resonant frequencies, two diagonal construction members are each used with the same resonance frequency. It is effective to set it to a resonant frequency.
（ト）発明の効果
以上述べた如く、本発明は、共振周波数が異なる複数本
の架設部材を組み合わせてレンズホルダーを支持してい
るので、前記複数本の架設部材が同一の周波数で同時に
共振することが防止出来、対物し、ンズのピッチングを
抑制出来るという利点を有する。(G) Effects of the Invention As described above, the present invention supports the lens holder by combining a plurality of construction members with different resonance frequencies, so that the plurality of construction members simultaneously resonate at the same frequency. This has the advantage of being able to prevent this from happening and suppressing the pitching of the lenses.
第１図は本発明に係る対物レンズ支持装置の一実施例を
示す斜視図、第２図は第１図の対物レンズ支持装置に使
用されたプリント基板を示す平面図、第３図は第１図の
主要部分を示す平面図である。
主な図番の説明
（１）・・・レンズホルダー （２）・・・対物レン
ズ、（１２）・・・フレーム、（１３）・・・ワイヤー
（１４）・・・プリント基板。FIG. 1 is a perspective view showing one embodiment of the objective lens support device according to the present invention, FIG. 2 is a plan view showing a printed circuit board used in the objective lens support device of FIG. 1, and FIG. FIG. 3 is a plan view showing the main parts of the figure. Explanation of main drawing numbers (1)...Lens holder (2)...Objective lens, (12)...Frame, (13)...Wire (14)...Printed circuit board.
Claims (1)
ら架設される架設部材により該フレームに変位自在に支
持する対物レンズ支持装置において、共振周波数が異な
る複数本の架設部材を組み合わせてレンズホルダーを支
持する様にしたことを特徴とする対物レンズ支持装置。(1) In an objective lens support device in which a lens holder having an objective lens is movably supported on the frame by a construction member installed from a frame, the lens holder is supported by combining a plurality of construction members with different resonance frequencies. An objective lens support device characterized by:
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1260758A JPH0743837B2 (en) | 1989-10-05 | 1989-10-05 | Objective lens support device |
| KR1019890019031A KR0153766B1 (en) | 1988-12-20 | 1989-12-20 | Optical device for reading and writing data on a recording medium |
| US07/453,933 US5136565A (en) | 1988-12-20 | 1989-12-20 | Optical device for reading and writing data on a recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1260758A JPH0743837B2 (en) | 1989-10-05 | 1989-10-05 | Objective lens support device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03122829A true JPH03122829A (en) | 1991-05-24 |
| JPH0743837B2 JPH0743837B2 (en) | 1995-05-15 |
Family
ID=17352323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1260758A Expired - Fee Related JPH0743837B2 (en) | 1988-12-20 | 1989-10-05 | Objective lens support device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743837B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004038709A1 (en) * | 2002-10-25 | 2004-05-06 | Matsushita Electric Industrial Co., Ltd. | Objective lens driving device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177533A (en) * | 1982-06-05 | 1983-10-18 | Olympus Optical Co Ltd | Reader for information track |
| JPS61115249A (en) * | 1984-11-09 | 1986-06-02 | Sanyo Electric Co Ltd | Supporting device of electromechanical transducer |
| JPH01243246A (en) * | 1988-03-25 | 1989-09-27 | Olympus Optical Co Ltd | Optical system supporting device |
-
1989
- 1989-10-05 JP JP1260758A patent/JPH0743837B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177533A (en) * | 1982-06-05 | 1983-10-18 | Olympus Optical Co Ltd | Reader for information track |
| JPS61115249A (en) * | 1984-11-09 | 1986-06-02 | Sanyo Electric Co Ltd | Supporting device of electromechanical transducer |
| JPH01243246A (en) * | 1988-03-25 | 1989-09-27 | Olympus Optical Co Ltd | Optical system supporting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004038709A1 (en) * | 2002-10-25 | 2004-05-06 | Matsushita Electric Industrial Co., Ltd. | Objective lens driving device |
| CN1322500C (en) * | 2002-10-25 | 2007-06-20 | 松下电器产业株式会社 | Objective lens driving device |
| US7433278B2 (en) | 2002-10-25 | 2008-10-07 | Matsushita Electric Industrial Co., Ltd. | Objective lens drive having a variable stiffness fixing member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0743837B2 (en) | 1995-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4679904A (en) | Lens driving device for an optical pickup unit with simplified construction | |
| JPH07302430A (en) | Optical pickup actuator for optical disc player | |
| KR900006182B1 (en) | Electromechanical transducer | |
| KR100408413B1 (en) | Actuator for optical pickup | |
| GB2384906A (en) | Optical pickup actuator | |
| KR960019134A (en) | Objective lens drive | |
| KR960019130A (en) | Optical Pickup Actuator for Optical Disc Player | |
| JP2003173556A (en) | Optical head device | |
| JPH03122829A (en) | Objective lens supporter | |
| JPH0349137B2 (en) | ||
| KR100344586B1 (en) | Pick-up actuator | |
| KR100871847B1 (en) | Actuator for Optical Pickup | |
| JP2877568B2 (en) | Objective lens support device | |
| JPH03125336A (en) | Objective lens supporter | |
| JP2700005B2 (en) | Objective lens drive | |
| JPH10289455A (en) | Objective lens driving device and its production | |
| JP2551009Y2 (en) | Objective lens support device | |
| JP2000222751A (en) | Biaxial actuator for optical pickup device | |
| JP2001014696A (en) | Objective lens drive assembly | |
| JPS6314334A (en) | Optical pickup device | |
| JPH03125337A (en) | Optical supporter | |
| JP2000293872A (en) | Object lens driving mechanism | |
| KR0141632B1 (en) | Wire Assembly Jig for Optical Pickup Actuator | |
| JPS635807B2 (en) | ||
| JPH08129767A (en) | Actuator of optical head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080515 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090515 Year of fee payment: 14 |
|
| LAPS | Cancellation because of no payment of annual fees |