JP2010250200A - Lens device - Google Patents

Lens device Download PDF

Info

Publication number
JP2010250200A
JP2010250200A JP2009101689A JP2009101689A JP2010250200A JP 2010250200 A JP2010250200 A JP 2010250200A JP 2009101689 A JP2009101689 A JP 2009101689A JP 2009101689 A JP2009101689 A JP 2009101689A JP 2010250200 A JP2010250200 A JP 2010250200A
Authority
JP
Japan
Prior art keywords
lens barrel
lens
fixing means
optical axis
fixed
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
Application number
JP2009101689A
Other languages
Japanese (ja)
Inventor
Hiroshi Shirota
啓 代田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Corp
Original Assignee
Fujifilm Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujifilm Corp filed Critical Fujifilm Corp
Priority to JP2009101689A priority Critical patent/JP2010250200A/en
Publication of JP2010250200A publication Critical patent/JP2010250200A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Lens Barrels (AREA)
  • Projection Apparatus (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lens device in which the lens device is fixed in the position where eccentricity performance is exhibited best and a zooming knob and a focusing knob are disposed directly on a lens barrel. <P>SOLUTION: The lens device 30 includes: the lens barrel 35; a pressing plate 38 which supports the lens barrel so as to be freely rotatable around an optical axis and fixes the lens barrel 35 at an adjusted position; the zooming knob 27 and focusing knob 28 which are fixed to a zooming rotary cylinder 45 and focusing rotary cylinder 46 assembled in the lens barrel 35, and rotates the corresponding rotary cylinders; and screw holes 61 and 62 which are provided in a plurality of circumferential areas of the zooming rotary cylinder 45 and focusing rotary cylinder 46 respectively and are selected from the plurality of areas so that the zooming knob 27 and focusing knob 28 are located directly on the lens barrel 35 in accordance with the fixed position of the lens barrel 35, and fix the knobs. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、プロジェクタのレンズ装置に関し、詳しくは、鏡胴の上部にズームやフォーカス用の操作部材が配置されるとともに、レンズ鏡胴をレンズの偏芯が最も少ない位置で固定できるようにしたレンズ装置に関する。   The present invention relates to a lens device for a projector, and more specifically, a lens in which an operation member for zooming and focusing is arranged on the upper portion of the lens barrel and the lens barrel can be fixed at a position where the lens is least decentered. Relates to the device.

近年、プロジェクタではズームレンズを搭載して投映画像サイズを変化させることができるようにしたものが多く、必然的にレンズ枚数が多くなる。また、複雑な形状であっても比較的容易且つ安価に製造でき、製品重量も軽くなることから樹脂成形によるプラスチック鏡胴が用いられることが多い。複数枚のレンズ及びプラスチック鏡胴などによって、レンズ群全体としての偏芯精度を確保することが難しくなり、スクリーン上に投映された画像の画質が劣化してしまう。前記複数枚のレンズは、それぞれが光軸を中心にして自由に回転した位置で鏡胴内に組込まれるので、１枚１枚のレンズが最も偏芯量の少ない位置（姿勢）で組込まれるとは限らず、総合的な偏芯量は増大される。そこで、鏡胴のレンズ受け面に凸部を設け、レンズのフランジ面に形成された凹部を嵌合させて、それぞれのレンズが決められた位置で鏡胴内に組込まれるようにしたレンズ装置が下記特許文献１に記載されている。   In recent years, many projectors are equipped with a zoom lens so that the projected image size can be changed, and the number of lenses inevitably increases. In addition, even a complicated shape can be manufactured relatively easily and inexpensively, and the weight of the product is reduced, so that a plastic lens barrel made of resin molding is often used. With a plurality of lenses and a plastic lens barrel, it becomes difficult to ensure the decentering accuracy of the entire lens group, and the image quality of the image projected on the screen deteriorates. Since each of the plurality of lenses is incorporated in the lens barrel at a position that freely rotates around the optical axis, each lens is incorporated at a position (posture) with the least amount of eccentricity. However, the total amount of eccentricity is increased. Therefore, a lens device is provided in which a convex portion is provided on the lens receiving surface of the lens barrel and a concave portion formed on the flange surface of the lens is fitted so that each lens is incorporated into the lens barrel at a predetermined position. It is described in the following Patent Document 1.

特開２００７−１７８４９７号公報JP 2007-178497 A

しかしながら、前記特許文献１記載のレンズ装置は、レンズの歪みが少ない位置に位置決め部を形成したものであり、組み上がった状態でのレンズ鏡胴の偏芯を調整することはできない。レンズが組込まれた状態のレンズ鏡胴の偏芯調整は、レンズ鏡胴を光軸中心に回転させて最も良い結果が得られる位置で固定する構成が一般的であるが、図８に示すように、プロジェクタ１０に取り付けられるレンズ装置１１は、例えば、レンズ装置１１の取付フランジ１２が４本のネジ１３によって固定されていると、光軸中心に９０°ごとに回転させることしかできないため、４個所のうちで最も良いところで固定されることになり、レンズ装置１１のベスト位置で固定されるとは限らない。また、固定される位置によっては、ズームやフォーカスを調整する操作部材がレンズ装置１１の斜め方向や下方になってしまうことがあると、操作性に支障をきたしてしまう。   However, the lens device described in Patent Document 1 has a positioning portion formed at a position where the distortion of the lens is small, and the eccentricity of the lens barrel in the assembled state cannot be adjusted. As for the eccentric adjustment of the lens barrel in a state where the lens is incorporated, a configuration in which the lens barrel is rotated around the optical axis and fixed at a position where the best result can be obtained is generally shown in FIG. In addition, the lens device 11 attached to the projector 10 can only be rotated about 90 ° about the optical axis when the mounting flange 12 of the lens device 11 is fixed by four screws 13, for example. It is fixed at the best place among the places, and is not necessarily fixed at the best position of the lens device 11. In addition, depending on the fixed position, if the operation member for adjusting the zoom or focus is in the oblique direction or below the lens device 11, the operability is hindered.

本発明は上記の問題を解決するためのものであり、レンズ装置をプロジェクタに組み付けた後に偏芯性能がベストな位置で固定できるようにするとともに、どのような位置に回されて固定されたとしても鏡胴部の真上にズームやフォーカス用の操作部材が配置できるようにしたレンズ装置を提案する。   The present invention is intended to solve the above-described problem, and enables the eccentric performance to be fixed at the best position after the lens apparatus is assembled to the projector, and is rotated to be fixed at any position. In addition, a lens apparatus is proposed in which an operation member for zooming and focusing can be arranged directly above the lens barrel.

本発明によるレンズ装置は、複数のレンズを保持したレンズ鏡胴を、光軸回りに回転自在に支持するするとともに回転調節後の位置で固定する鏡胴固定手段と、前記レンズ鏡胴に回転自在に組み込まれ、その回転により前記複数のレンズの少なくとも一部を光軸方向に移動させる回転筒と、前記回転筒に固定され、前記回転筒を回転させる操作部材と、前記回転筒の円周方向の複数個所に設けられ、前記鏡胴の固定位置に応じて前記複数個所から選択され、前記操作部材が固定される操作部材固定手段と、を備えたことを特徴とする。   The lens apparatus according to the present invention includes a lens barrel holding means for supporting a lens barrel holding a plurality of lenses rotatably around an optical axis and fixing the lens barrel at a position after the rotation adjustment, and the lens barrel is rotatable on the lens barrel. A rotating cylinder that moves at least a part of the plurality of lenses in the optical axis direction by rotation thereof, an operation member that is fixed to the rotating cylinder and rotates the rotating cylinder, and a circumferential direction of the rotating cylinder And an operation member fixing means which is selected from the plurality of locations according to the fixing position of the lens barrel and to which the operation member is fixed.

前記鏡胴固定手段は、光軸回りの任意の調節位置で前記レンズ鏡胴を固定可能にすると良い前記鏡胴固定手段は、前記レンズ鏡胴に設けられたフランジ部の複数個所を略等間隔で押圧して固定する複数個の押え板であっても良く、前記レンズ鏡胴に設けられたフランジ部の全周を覆って押圧するリング状押圧部を有する１枚の押圧板であっても良い。あるいは、前記レンズ鏡胴に設けられたフランジ部を全周に亘って覆うとともに前記レンズの光軸を中心とする同心円の雌ネジを備え、前記雌ネジの締め付けによって前記フランジ部を押圧して前記レンズ鏡胴を固定する雌ネジ環であっても良い。   The lens barrel fixing means may be capable of fixing the lens barrel at an arbitrary adjustment position around the optical axis. The lens barrel fixing means may be provided at substantially equal intervals at a plurality of flange portions provided on the lens barrel. It may be a plurality of press plates that are pressed and fixed with a single press plate having a ring-shaped press portion that covers and presses the entire circumference of the flange portion provided on the lens barrel. good. Alternatively, a flange portion provided on the lens barrel is covered over the entire circumference and a concentric female screw centered on the optical axis of the lens is provided, and the flange portion is pressed by tightening the female screw. It may be a female screw ring for fixing the lens barrel.

本発明によれば、複数のレンズが組込まれたレンズ装置をプロジェクタに取り付ける際に、投映された画像が最も良くなる状態で固定することができるとともに、レンズ装置を固定した後にズームやフォーカスを調整する操作部材を鏡胴部の真上に配置することができるので操作性が良好である。   According to the present invention, when a lens device incorporating a plurality of lenses is attached to a projector, the projected image can be fixed in the best state, and the zoom and focus can be adjusted after fixing the lens device. Since the operating member to be arranged can be arranged directly above the lens barrel, the operability is good.

本発明によるレンズ装置が取り付けられたプロジェクタの斜視外観図である。1 is a perspective external view of a projector to which a lens device according to the present invention is attached. レンズ装置の断面図である。It is sectional drawing of a lens apparatus. レンズ鏡胴の斜視外観図である。It is a perspective appearance figure of a lens barrel. レンズ装置の分解斜視図である。It is a disassembled perspective view of a lens apparatus. 鏡胴固定手段として押え環を用いたときの説明図である。It is explanatory drawing when a presser ring is used as a lens barrel fixing means. 鏡胴固定手段として雌ネジ環を用いたときの説明図である。It is explanatory drawing when an internal thread ring is used as a lens barrel fixing means. 鏡胴固定手段として長孔とネジを用いたときの説明図である。It is explanatory drawing when a long hole and a screw are used as a lens barrel fixing means. 従来のレンズ装置が取り付けられたプロジェクタの斜視外観図である。It is a perspective external view of the projector with which the conventional lens apparatus was attached.

図１に示すように、プロジェクタ２０は、略直方体をした筐体２１に、光源２３、照明光学系２４、全反射プリズム２５、デジタルマイクロミラーデバイス（以下、ＤＭＤという。）２６が収容されたケース２２と、ケース２２に取り付けられたレンズ装置３０とを備える。ケース２２は収容された各光学装置やレンズ装置３０の光学精度が確保されるように、強度的に十分な板厚を有するとともに強固に筐体２１に固定されている。なお、レンズ装置３０はケース２２ではなく別の強固な取り付け部材に固定するようにしても良い。   As shown in FIG. 1, the projector 20 is a case in which a light source 23, an illumination optical system 24, a total reflection prism 25, and a digital micromirror device (hereinafter referred to as DMD) 26 are housed in a substantially rectangular housing 21. 22 and a lens device 30 attached to the case 22. The case 22 has a sufficient thickness and is firmly fixed to the housing 21 so that the optical accuracy of each optical device and the lens device 30 accommodated is secured. The lens device 30 may be fixed to another strong attachment member instead of the case 22.

レンズ装置３０にはズームツマミ（操作部材）２７とフォーカスツマミ（操作部材）２８が取り付けられ、筐体２１に形成された開口３１から操作可能に露呈される。ズームツマミ２７とフォーカスツマミ２８によって、投映された画像の拡大縮小及び画像のピント調節が行われる。図示しない電源スイッチが操作されると光源２３から光が放射される。放射された光はカラーフィルタやインテグレータなどから構成された照明光学系２４を透過して全反射プリズム２５に入射し、ＤＭＤ２６に表示された画像がレンズ装置３０によってスクリーン等に投映される。なお、光源２３には、超高圧水銀ランプ、メタルハライドランプ、キセノンランプ等の高輝度放電ランプを用いるのが一般的であるが、これらの構成については周知技術であるから詳細説明を省略する。   A zoom knob (operation member) 27 and a focus knob (operation member) 28 are attached to the lens device 30 and are exposed from an opening 31 formed in the housing 21 so as to be operable. The zoom knob 27 and the focus knob 28 perform enlargement / reduction of the projected image and focus adjustment of the image. When a power switch (not shown) is operated, light is emitted from the light source 23. The emitted light passes through an illumination optical system 24 composed of a color filter, an integrator, etc., and enters a total reflection prism 25, and an image displayed on the DMD 26 is projected on a screen or the like by the lens device 30. The light source 23 is generally a high-intensity discharge lamp such as an ultra-high pressure mercury lamp, a metal halide lamp, or a xenon lamp. However, since these components are well-known techniques, a detailed description thereof will be omitted.

図２及び図３に示すように、本発明によるレンズ装置３０は、複数のレンズ４１，４２を保持したレンズ鏡胴３５と、ケース２２に固定されたマウント板３４と、マウント板３４にネジ３９に固定された押え板（鏡胴固定手段）３８とを備え、押え板３８は、レンズ鏡胴３５を光軸４０回りに回転自在に支持し、調整後の位置で固定する。レンズ鏡胴３５は、フランジ部３７を有する固定筒３６と、固定筒３６に回転自在に組み込まれ、その回転によりレンズ４１，４２を光軸方向に移動させるズーム回転筒４５とフォーカス回転筒４６とを備える。ズーム回転筒４５，フォーカス回転筒４６には複数のネジ孔（操作部材固定手段）６１，６２がそれぞれ形成され、ズームツマミ２７、フォーカスツマミ２８が固定される。固定筒３６は複数の変倍レンズ群４１とフォーカスレンズ群４２を光軸４０方向に移動自在に支持する複数の直進溝４４を有し、外側にズーム回転筒４５とフォーカス回転筒４６が回転自在に装着される。ズーム回転筒４５とフォーカス回転筒４６は、複数の変倍レンズ群４１を光軸４０の方向に移動させる複数のズームカム溝４７と、フォーカスレンズ群４２を光軸４０の方向に移動させる複数のフォーカスカム溝４８とをそれぞれ備える。なお、フォーカスレンズ群４２の移動にフォーカスカム溝４８を用いず、フォーカスレンズ枠４９にヘリコイドギヤを形成する方法を用いても良い。   As shown in FIGS. 2 and 3, the lens device 30 according to the present invention includes a lens barrel 35 holding a plurality of lenses 41 and 42, a mount plate 34 fixed to the case 22, and a screw 39 on the mount plate 34. And a pressing plate (lens barrel fixing means) 38. The pressing plate 38 supports the lens barrel 35 so as to be rotatable about the optical axis 40 and fixes it at the adjusted position. The lens barrel 35 includes a fixed cylinder 36 having a flange portion 37, a zoom rotary cylinder 45 and a focus rotary cylinder 46 that are rotatably incorporated in the fixed cylinder 36 and move the lenses 41 and 42 in the optical axis direction by the rotation. Is provided. A plurality of screw holes (operation member fixing means) 61 and 62 are formed in the zoom rotary cylinder 45 and the focus rotary cylinder 46, respectively, and the zoom knob 27 and the focus knob 28 are fixed. The fixed cylinder 36 has a plurality of rectilinear grooves 44 that support a plurality of zoom lens groups 41 and a focus lens group 42 so as to be movable in the direction of the optical axis 40, and a zoom rotating cylinder 45 and a focus rotating cylinder 46 are rotatable on the outside. It is attached to. The zoom rotation cylinder 45 and the focus rotation cylinder 46 are a plurality of zoom cam grooves 47 that move the plurality of zoom lens groups 41 in the direction of the optical axis 40 and a plurality of focus that move the focus lens group 42 in the direction of the optical axis 40. And cam grooves 48 respectively. A method of forming a helicoid gear in the focus lens frame 49 may be used instead of using the focus cam groove 48 to move the focus lens group 42.

次に、レンズ装置３０の組立手順及び作用・効果について説明する。図４に示すように、マウント板３４に形成されたレンズ装着孔５２にレンズ鏡胴３５の入射側端部５３を挿入させる。押え板３８に形成された孔５４に挿通させたネジ３９をマウント板３４に形成されたネジ孔５５に螺合させて、４つの押え板３８によってフランジ部３７を支持する。ここで、ネジ３９はレンズ鏡胴３５が回転できる程度に押え板３８がフランジ部３７を押圧するように止められる。電源スイッチがオンされ画像光がレンズ鏡胴３５から射出されて、画像がスクリーンに投映される。投映された画像の状態を見ながらレンズ鏡胴３５を回転させ、もっとも良好な位置でネジ３９を締め付ける。ネジ３９によって押え板３８がレンズ鏡胴３５を固定する。   Next, an assembling procedure and operation / effect of the lens device 30 will be described. As shown in FIG. 4, the incident side end 53 of the lens barrel 35 is inserted into the lens mounting hole 52 formed in the mount plate 34. The screw 39 inserted through the hole 54 formed in the press plate 38 is screwed into the screw hole 55 formed in the mount plate 34, and the flange portion 37 is supported by the four press plates 38. Here, the screw 39 is stopped so that the press plate 38 presses the flange portion 37 to such an extent that the lens barrel 35 can rotate. The power switch is turned on, image light is emitted from the lens barrel 35, and the image is projected on the screen. The lens barrel 35 is rotated while watching the state of the projected image, and the screw 39 is tightened at the best position. The holding plate 38 fixes the lens barrel 35 with screws 39.

レンズ鏡胴３５が固定された後、ズームツマミ２７，フォーカスツマミ２８がズーム回転筒４５，フォーカス回転筒４６のそれぞれ略真上になるように載せ、ズームツマミ２７及びフォーカスツマミ２８に形成された長溝５７及び５８にネジ６０を挿通させる。長溝５７及び５８には、レンズ鏡胴３５の調整後の位置に応じて前記複数の中から選択されたネジ孔６１及び６２がそれぞれ少なくとも１つ以上露呈するので、ネジ６０をそれぞれ螺合させ、ズームツマミ２７とフォーカスツマミ２８をズーム回転筒４５及びフォーカス回転筒４６にそれぞれ固定する。これによって、複数のレンズが用いられることによるレンズの偏芯の投映画像への影響が最も少なくなるとともに、ズーミングやフォーカシングにための操作ツマミの位置がレンズ装置３０の真上にあるので操作性が良い。   After the lens barrel 35 is fixed, the zoom knob 27 and the focus knob 28 are placed so that they are almost directly above the zoom rotary cylinder 45 and the focus rotary cylinder 46, respectively, and long grooves formed in the zoom knob 27 and the focus knob 28 are formed. Screws 60 and 57 are inserted. At least one or more screw holes 61 and 62 selected from the plurality according to the adjusted position of the lens barrel 35 are exposed to the long grooves 57 and 58, respectively. The zoom knob 27 and the focus knob 28 are fixed to the zoom rotary cylinder 45 and the focus rotary cylinder 46, respectively. As a result, the influence of the eccentricity of the lens due to the use of a plurality of lenses on the projected image is minimized, and the position of the operation knob for zooming and focusing is directly above the lens device 30, so that the operability is improved. good.

図５に示すようにレンズ鏡胴３５を固定する鏡胴固定手段として、押え板３８に代えて押圧板６５を用いても良い。押圧板６５は、フランジ部３７を全周に亘って覆う。押圧板６５に形成された取付孔６６に挿通されたネジ６７が、マウント板３４に形成されたネジ孔５５に螺合する。ネジ６７は、レンズ鏡胴３５が回転できる程度に押圧板６５がフランジ部３７を押圧するように止められ、レンズ鏡胴３５の位置が調整された後に強く締め付けられて、レンズ鏡胴３５が固定される。なお、孔５４及び取付孔６６は切り欠き孔であっても良い。   As shown in FIG. 5, a pressing plate 65 may be used in place of the pressing plate 38 as a lens barrel fixing means for fixing the lens barrel 35. The pressing plate 65 covers the flange portion 37 over the entire circumference. A screw 67 inserted through an attachment hole 66 formed in the pressing plate 65 is screwed into a screw hole 55 formed in the mount plate 34. The screw 67 is stopped so that the pressing plate 65 presses the flange portion 37 to such an extent that the lens barrel 35 can be rotated, and is firmly tightened after the position of the lens barrel 35 is adjusted, so that the lens barrel 35 is fixed. Is done. Note that the hole 54 and the attachment hole 66 may be cutout holes.

図６に示すようにレンズ鏡胴３５を固定する鏡胴固定手段として、雌ネジ環７０を用いても良い。雌ネジ環７０は、光軸４０を中心とする同心円状にネジ山を有する雌ネジ７１が形成されるとともに、フランジ部３７を全周に亘って覆う。マウント板６８に形成されたレンズ装着孔５２の周囲には雄ネジ７２が設けられ、雌ネジ７１が雄ネジ７２と螺合して雌ネジ環７０がレンズ鏡胴３５を回転できる程度に押圧して仮止めされ、レンズ鏡胴３５の位置が調整された後に強く締め付けられて、レンズ鏡胴３５が固定される。   As shown in FIG. 6, a female screw ring 70 may be used as a lens barrel fixing means for fixing the lens barrel 35. The female thread ring 70 is formed with a female thread 71 having a concentric thread centered on the optical axis 40 and covers the flange portion 37 over the entire circumference. A male screw 72 is provided around the lens mounting hole 52 formed in the mount plate 68, and the female screw 71 is engaged with the male screw 72, and the female screw ring 70 is pressed to such an extent that the lens barrel 35 can be rotated. The lens barrel 35 is fixed by tightening and tightening strongly after the position of the lens barrel 35 is adjusted.

図７に示すように、レンズ鏡胴３５のフランジ部３７に長孔８０を４個所に形成し、ネジ８１によってレンズ鏡胴３５をマウント板８５に固定するようにしても良い。ネジ８１は長孔８０に挿通された後にマウント板８５に形成されたネジ孔８２に螺合される。長孔８０は、挿通されたネジ８１によって回転が規制されるが、４５°以上回転する長さに形成され、マウント板８５にはネジ孔８２が４５°間隔で８個が形成されているので、長孔８０には少なくとも１つのネジ孔８２が露呈することになり、レンズ鏡胴３５は３６０°回転させて位置決めを行うことができる。なお、長孔８０の長さはネジ孔８２が長孔８０の両端に露呈する長さ以上であれば良く、ネジ孔８２の数が長孔８０より多く設けられていれば良い。レンズ鏡胴３５を３６０°回転させたいかなる位置においても全ての長孔８０に少なくとも１本のネジ８１が螺合可能となる。従って、長孔８０及びネジ孔８２の数は４個及び８個に限るものではなく、例えば、長孔８０及びネジ孔８２の数がそれぞれ３個、４個の場合は、長孔８０の長さを９０°回転可能な長さにすれば良い。長孔８０及びネジ孔８２の数がそれぞれ４個、５個の場合は、長孔８０の長さを７２°回転可能な長さにすれば良い。   As shown in FIG. 7, four long holes 80 may be formed in the flange portion 37 of the lens barrel 35, and the lens barrel 35 may be fixed to the mount plate 85 with screws 81. The screw 81 is inserted into the long hole 80 and then screwed into a screw hole 82 formed in the mount plate 85. The long holes 80 are restricted in rotation by the inserted screws 81, but are formed to have a length that rotates by 45 ° or more. Since the mount plate 85 has eight screw holes 82 at 45 ° intervals. At least one screw hole 82 is exposed in the long hole 80, and the lens barrel 35 can be positioned by rotating 360 °. In addition, the length of the long hole 80 should just be more than the length which the screw hole 82 exposes to the both ends of the long hole 80, and the number of the screw holes 82 should just be provided more than the long hole 80. FIG. At any position where the lens barrel 35 is rotated 360 °, at least one screw 81 can be screwed into all the long holes 80. Therefore, the number of the long holes 80 and the screw holes 82 is not limited to 4 and 8. For example, when the number of the long holes 80 and the screw holes 82 is 3 and 4, respectively, the length of the long holes 80 is long. It is sufficient to make the length 90 ° rotatable. When the number of the long holes 80 and the screw holes 82 is 4 and 5, respectively, the length of the long holes 80 may be set to a length that can be rotated by 72 °.

２０ プロジェクタ
２２ ケース
２７ ズームツマミ（操作部材）
２８ フォーカスツマミ（操作部材）
３０ レンズ装置
３１ 開口
３４，６８，８５ マウント板
３５ レンズ鏡胴
３６ 固定筒
３７ フランジ部
３８ 押え板（鏡胴固定手段）
４０ 光軸
４１ 変倍レンズ群（複数のレンズ）
４２ フォーカスレンズ群（複数のレンズ）
４４ 直進溝
４５ ズーム回転筒
４６ フォーカス回転筒
４７ ズームカム溝
４８ フォーカスカム溝
４９ フォーカスレンズ枠
５２ レンズ装着孔
５３ 入射側端部
５４ 孔
５５，８２ ネジ孔
５７，５８ 長溝
６０，８１ ネジ
６１，６２ ネジ孔（操作部材固定手段）
６５ 押圧板（鏡胴固定手段）
６６ 取付孔
６７ ネジ
７０ 雌ネジ環（鏡胴固定手段）
７１ 雌ネジ
７２ 雄ネジ
８０ 長孔（鏡胴固定手段）
20 Projector 22 Case 27 Zoom knob (operation member)
28 Focus knob (operating member)
Reference Signs List 30 Lens device 31 Aperture 34, 68, 85 Mount plate 35 Lens barrel 36 Fixed cylinder 37 Flange portion 38 Press plate (lens barrel fixing means)
40 Optical axis 41 Variable magnification lens group (multiple lenses)
42 Focus lens group (multiple lenses)
44 Straight Groove 45 Zoom Rotating Tube 46 Focus Rotating Tube 47 Zoom Cam Groove 48 Focus Cam Groove 49 Focus Lens Frame 52 Lens Mounting Hole 53 Incident Side End 54 Hole 55, 82 Screw Hole 57, 58 Long Groove 60, 81 Screw 61, 62 Screw Hole (operating member fixing means)
65 Press plate (barrel fixing means)
66 Mounting hole 67 Screw 70 Female thread ring (lens barrel fixing means)
71 Female Thread 72 Male Thread 80 Elongated Hole (Cylinder Fixing Means)

Claims (5)

複数のレンズを保持したレンズ鏡胴を、光軸回りに回転自在に支持するするとともに回転調節後の位置で固定する鏡胴固定手段と、
前記レンズ鏡胴に回転自在に組み込まれ、その回転により前記複数のレンズの少なくとも一部を光軸方向に移動させる回転筒と、
前記回転筒に固定され、前記回転筒を回転させる操作部材と、
前記回転筒の円周方向の複数個所に設けられ、前記鏡胴の固定位置に応じて前記複数個所から選択され、前記操作部材が固定される操作部材固定手段と、
を備えたことを特徴とするレンズ装置。 A lens barrel holding a plurality of lenses, a lens barrel fixing means for supporting the lens barrel rotatably around the optical axis and fixing the lens barrel at a position after the rotation adjustment;
A rotating cylinder that is rotatably incorporated in the lens barrel and moves at least a part of the plurality of lenses in the optical axis direction by the rotation;
An operation member fixed to the rotating cylinder and rotating the rotating cylinder;
Operation member fixing means provided at a plurality of locations in the circumferential direction of the rotating cylinder, selected from the plurality of locations according to a fixing position of the lens barrel, and the operation member is fixed;
A lens device comprising: 前記鏡胴固定手段は、光軸回りの任意の調節位置で前記レンズ鏡胴を固定可能であることを特徴とする請求項１記載のレンズ装置。   The lens apparatus according to claim 1, wherein the lens barrel fixing unit can fix the lens barrel at an arbitrary adjustment position around the optical axis. 前記鏡胴固定手段は、前記レンズ鏡胴に設けられたフランジ部の複数個所を略等間隔で押圧して固定する複数個の押え板を備えることを特徴とする請求項１又は２記載のレンズ装置。   3. The lens according to claim 1, wherein the lens barrel fixing means includes a plurality of pressing plates that press and fix a plurality of flange portions provided on the lens barrel at substantially equal intervals. apparatus. 前記鏡胴固定手段は、前記レンズ鏡胴に設けられたフランジ部の全周を覆って押圧するリング状押圧部を有する１枚の押圧板であることを特徴とする請求項１又は２記載のレンズ装置。   The lens barrel fixing means is a single pressing plate having a ring-shaped pressing portion that covers and presses the entire circumference of a flange portion provided in the lens barrel. Lens device. 前記鏡胴固定手段は、前記レンズ鏡胴に設けられたフランジ部を全周に亘って覆うとともに前記レンズの光軸を中心とする同心円の雌ネジを備え、前記雌ネジの締め付けによって前記フランジ部を押圧して前記レンズ鏡胴を固定する雌ネジ環であることを特徴とする請求項１又は２記載のレンズ装置。   The lens barrel fixing means includes a concentric female screw that covers a flange portion provided on the lens barrel over the entire circumference and that is centered on the optical axis of the lens, and the flange portion is tightened by tightening the female screw. The lens device according to claim 1, wherein the lens device is a female screw ring that presses and fixes the lens barrel.
JP2009101689A 2009-04-20 2009-04-20 Lens device Pending JP2010250200A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009101689A JP2010250200A (en) 2009-04-20 2009-04-20 Lens device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009101689A JP2010250200A (en) 2009-04-20 2009-04-20 Lens device

Publications (1)

Publication Number Publication Date
JP2010250200A true JP2010250200A (en) 2010-11-04

Family

ID=43312578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009101689A Pending JP2010250200A (en) 2009-04-20 2009-04-20 Lens device

Country Status (1)

Country Link
JP (1) JP2010250200A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105022133A (en) * 2014-04-17 2015-11-04 中强光电股份有限公司 Projection device, lens module, and position adjustment device applied to projection device and lens module
JP2017009779A (en) * 2015-06-22 2017-01-12 セイコーエプソン株式会社 Projection optical system and projector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105022133A (en) * 2014-04-17 2015-11-04 中强光电股份有限公司 Projection device, lens module, and position adjustment device applied to projection device and lens module
JP2017009779A (en) * 2015-06-22 2017-01-12 セイコーエプソン株式会社 Projection optical system and projector

Similar Documents

Publication Publication Date Title
US7327527B2 (en) Lens supporting frame of lens device and method of adjusting the same
US7440200B2 (en) Projection type display apparatus having micro mirror type display element
US7581840B2 (en) Focus regulator and projection apparatus having same
JP2007248770A (en) Zoom lens device
JP2010169915A (en) Projection lens and method for manufacturing projection lens
JP2010262226A (en) Lens barrel
JP2006023359A (en) Lens supporting frame of lens device and manufacture method for lens device
JP2006047986A (en) Optical device
US7948688B2 (en) Lens apparatus and image projection apparatus
KR100794794B1 (en) Focusing apparatus for optical projection device and projection optical system
JP2010250200A (en) Lens device
JP5156587B2 (en) Lens movement frame
JP2009204640A (en) Zoom lens device
JP2007212731A (en) Projection lens system and image projector
JP2007219023A (en) Lens barrel
JP4433855B2 (en) Lens device and adjustment method thereof
JP2007052186A (en) Camera module and its manufacture method
JP5912871B2 (en) Aperture correction mechanism and lens barrel
JP2009080437A (en) Projection lens and projector
JP2010107702A (en) Projection lens, projector, and method for manufacturing the projection lens
JP2010164684A (en) Projection lens unit
JP2007248872A (en) Lens unit and lens unit assembling method
JP2003279822A (en) Attachment adjusting device for lens
JP4540373B2 (en) Lens barrel and projector device
JP2018205656A (en) projector