JP5162625B2 - Projection device and liquid crystal panel unit used in projection device - Google Patents
Projection device and liquid crystal panel unit used in projection device Download PDFInfo
- Publication number
- JP5162625B2 JP5162625B2 JP2010119086A JP2010119086A JP5162625B2 JP 5162625 B2 JP5162625 B2 JP 5162625B2 JP 2010119086 A JP2010119086 A JP 2010119086A JP 2010119086 A JP2010119086 A JP 2010119086A JP 5162625 B2 JP5162625 B2 JP 5162625B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal panel
- compensation sheet
- optical compensation
- optical axis
- 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.)
- Active
Links
Description
本発明は液晶パネルと偏光板との間に光学補償シートを配置した投写装置に関する。 The present invention relates to a projection apparatus in which an optical compensation sheet is disposed between a liquid crystal panel and a polarizing plate.
この種、投写装置において、本願出願人は、特願２００２−３７１５１０号において提案している。即ち、液晶分子を封入した液晶パネルと偏光板との間に配置する光学補償シートを、光軸に直交する面内にて回動調整自在に構成したものである。そして、この構成により、光軸方向から見た液晶パネルの液晶分子の配向方向に対して光学補償シート内の液晶分子の遅相軸が平行になるように調整することができるため、黒色と白色のコントラストが鮮明で、且つ、均一な画像を写し出すことができるものである（例えば特許文献１参照）。 In this type of projection apparatus, the present applicant has proposed in Japanese Patent Application No. 2002-371510. That is, the optical compensation sheet disposed between the liquid crystal panel enclosing the liquid crystal molecules and the polarizing plate is configured so as to be rotatable and adjustable within a plane orthogonal to the optical axis. With this configuration, since the slow axis of the liquid crystal molecules in the optical compensation sheet can be adjusted to be parallel to the alignment direction of the liquid crystal molecules of the liquid crystal panel as viewed from the optical axis direction, black and white The contrast is clear and a uniform image can be projected (see, for example, Patent Document 1).
しかしながら、液晶パネル内の液晶分子の光軸方向の遅相軸に対して光学補償シートの見かけ上の遅相軸を一致させることができないため、液晶パネルが不均一な画像を写し出してしまう虞があった。 However, since the apparent slow axis of the optical compensation sheet cannot match the slow axis in the optical axis direction of the liquid crystal molecules in the liquid crystal panel, there is a risk that the liquid crystal panel will display a non-uniform image. there were.
そこで本発明は、光学補償シートを備えた投写装置において、常に安定して均一な画像を写し出すことができる投写装置及び投写装置に用いる液晶パネルユニットを提供することを課題とする。 Accordingly, an object of the present invention is to provide a projection device that can always stably and uniformly project a uniform image in a projection device including an optical compensation sheet, and a liquid crystal panel unit used in the projection device.
上記課題を解決するための第１の手段は、光源から分光された緑色光、赤色光、青色光に照射され、液晶分子を封入した夫々の液晶パネルと、夫々の液晶パネルに対向する位置に配置された偏光板と、偏光板と液晶パネルとの間に配置され、液晶分子の複屈折を補償する光学補償シートとを備えた投写装置において、前記光学補償シートは、シャーシに保持された補助部材に対して回動自在な回動部材に配置され、回動部材は、上方に形成された摘み部を操作することにより、光学補償シートが光軸に対して傾斜調整自在となるように構成されていると共に、傾斜調整後には補助部材に固定され、前記補助部材は、シャーシに対して光軸に直交する面内にて回動自在となるように構成されていることを特徴とする。 The first means for solving the above-mentioned problems is that each of the liquid crystal panels irradiated with green light, red light, and blue light dispersed from the light source and encapsulating liquid crystal molecules is located at a position facing each liquid crystal panel. In the projection apparatus including the disposed polarizing plate and the optical compensation sheet that is disposed between the polarizing plate and the liquid crystal panel and compensates for the birefringence of the liquid crystal molecules, the optical compensation sheet is supported by the chassis. The rotating member is arranged on a rotating member that is rotatable with respect to the member, and the rotating member is configured so that the optical compensation sheet can be adjusted to be inclined with respect to the optical axis by operating a knob formed above. In addition, after the tilt adjustment, the auxiliary member is fixed to an auxiliary member, and the auxiliary member is configured to be rotatable in a plane perpendicular to the optical axis with respect to the chassis .
上記課題を解決するための第２の手段は、光源から分光された緑色光、赤色光、青色光に照射され、液晶分子を封入した夫々の液晶パネルと、夫々の液晶パネルに対向する位置に配置された偏光板と、偏光板と液晶パネルとの間に配置され、液晶分子の複屈折を補償する光学補償シートとを備えた液晶パネルユニットにおいて、前記光学補償シートは、シャーシに保持された補助部材に対して回動自在な回動部材に配置され、回動部材は、上方に形成された摘み部を操作することにより、光学補償シートが光軸に対して傾斜調整自在となるように構成されていると共に、傾斜調整後には補助部材に固定され、前記補助部材は、シャーシに対して光軸に直交する面内にて回動自在となるように構成されていることを特徴とする。 The second means for solving the above problems is that each of the liquid crystal panels irradiated with green light, red light, and blue light separated from the light source and encapsulating liquid crystal molecules is located at a position facing each liquid crystal panel. In the liquid crystal panel unit including the disposed polarizing plate and the optical compensation sheet disposed between the polarizing plate and the liquid crystal panel and compensating for the birefringence of the liquid crystal molecules, the optical compensation sheet is held by the chassis. The rotating member is disposed on a rotating member that is rotatable with respect to the auxiliary member, and the rotating member operates the knob formed on the upper side so that the optical compensation sheet can be tilted with respect to the optical axis. In addition, after the tilt adjustment, the auxiliary member is fixed to an auxiliary member, and the auxiliary member is configured to be rotatable in a plane perpendicular to the optical axis with respect to the chassis. .
本発明の構成によると、液晶パネル内の液晶分子の光軸方向の遅相軸に対して光学補償シートの見かけ上の遅相軸を一致させることができるため、黒色と白色のコントラストが鮮明で、且つ、均一な画像を写し出すことができる等の効果を奏する。 According to the configuration of the present invention, the apparent slow axis of the optical compensation sheet can be matched with the slow axis in the optical axis direction of the liquid crystal molecules in the liquid crystal panel, so that the contrast between black and white is clear. In addition, there is an effect that a uniform image can be projected.
（第１実施形態）
本発明の一実施形態を図１乃至図７に基づいて以下に詳述する。
(First embodiment)
An embodiment of the present invention will be described in detail below with reference to FIGS.
図１は、本発明に係わる投写装置の光学系を示す図である。本装置は、シャーシ３上に光の３原色である緑色（Ｇ）光、赤色（Ｒ）光、青色（Ｂ）光に夫々対応した３枚の液晶パネル７、７a、７bを備え、これらを光源３５からの強い光で照射し、各液晶パネルを通過した光束を合成して投写レンズ３６を介して画像を映し出す。 FIG. 1 is a diagram showing an optical system of a projection apparatus according to the present invention. This apparatus comprises three liquid crystal panels 7, 7a, 7b corresponding to the three primary colors of light, green (G) light, red (R) light, and blue (B) light, on the chassis 3, respectively. Irradiated with strong light from the light source 35, the light beams that have passed through the respective liquid crystal panels are combined, and an image is projected through the projection lens 36.
シャーシ３内には、投写レンズ３６の光軸を挟んで、赤色（Ｒ）光と青色（Ｂ）光に対応した液晶パネル７a、７bが配置され、両液晶パネル７a、７bの間にプリズム体３０が配置されている。プリズム体３０を挟んで投写レンズ３６の反対側には、緑色（Ｇ）光に対応した液晶パネル７が配置されている。 In the chassis 3, liquid crystal panels 7 a and 7 b corresponding to red (R) light and blue (B) light are arranged with the optical axis of the projection lens 36 interposed therebetween, and a prism body is disposed between the liquid crystal panels 7 a and 7 b. 30 is arranged. A liquid crystal panel 7 corresponding to green (G) light is disposed on the opposite side of the projection lens 36 across the prism body 30.
シャーシ３への光路入口には、光源３５が配置され、光路上には全反射ミラー７５、７６、７７、７８、ダイクロイックミラー４５、４６が配置されている。 A light source 35 is disposed at the optical path entrance to the chassis 3, and total reflection mirrors 75, 76, 77, 78 and dichroic mirrors 45, 46 are disposed on the optical path.
光源３５からの光は、全反射ミラー７５により反射された後に、ダイクロイックミラー４５により緑色（Ｇ）光及び青色（Ｂ）光が反射すると共に、赤色（Ｒ）光はダイクロイックミラー４５を透過する。ダイクロイックミラー４５を通過した赤色（Ｒ）光は全反射ミラー７６により反射されて赤色（Ｒ）光に対応した液晶パネル７aを照射し、プリズム体３０により投写レンズ３６に向けて照射される。 After the light from the light source 35 is reflected by the total reflection mirror 75, the green (G) light and the blue (B) light are reflected by the dichroic mirror 45, and the red (R) light is transmitted through the dichroic mirror 45. The red (R) light that has passed through the dichroic mirror 45 is reflected by the total reflection mirror 76, irradiates the liquid crystal panel 7 a corresponding to the red (R) light, and is irradiated toward the projection lens 36 by the prism body 30.
ダイクロイックミラー４５により反射された緑色（Ｇ）光はダイクロイックミラー４６により反射されて緑色（Ｇ）光に対応した液晶パネル７を照射し、プリズム体３０により投写レンズ３６に向けて照射される。また、ダイクロイックミラー４５により反射された青色（Ｂ）光はダイクロイックミラー４６を透過し、リレーレンズ３８を経て全反射ミラー７７により反射された後に、青色（Ｂ）光に対応した液晶パネル７ｂを照射し、プリズム体３０により投写レンズ３６に向けて照射される。 The green (G) light reflected by the dichroic mirror 45 is reflected by the dichroic mirror 46 and irradiates the liquid crystal panel 7 corresponding to the green (G) light, and is irradiated by the prism body 30 toward the projection lens 36. The blue (B) light reflected by the dichroic mirror 45 passes through the dichroic mirror 46, is reflected by the total reflection mirror 77 through the relay lens 38, and then irradiates the liquid crystal panel 7b corresponding to the blue (B) light. Then, the light is irradiated toward the projection lens 36 by the prism body 30.
図２は、液晶パネル７周囲の拡大平面図である。尚、液晶パネル７a、７b周囲にも、液晶パネル７周囲と同様の構成となっているが、説明の便宜上、液晶パネル７を例示する。 FIG. 2 is an enlarged plan view around the liquid crystal panel 7. The liquid crystal panels 7a and 7b have the same configuration as that around the liquid crystal panel 7, but the liquid crystal panel 7 is illustrated for convenience of explanation.
液晶パネル７の光入射側と出射側には、夫々偏光板７３，７４が配置され、周知の如く、入射側の偏光板７３を通過した偏光は、液晶パネル７に電界が印加されない状態で、液晶パネル７内にて直交する方向にねじられて出射側の偏光板７４を透過する。 Polarizers 73 and 74 are respectively disposed on the light incident side and the exit side of the liquid crystal panel 7, and as is well known, the polarized light that has passed through the incident side polarizing plate 73 is in a state where no electric field is applied to the liquid crystal panel 7. The liquid crystal panel 7 is twisted in the orthogonal direction and passes through the output-side polarizing plate 74.
液晶パネル７と入射側の偏光板７３との間には、液晶パネル７内の液晶分子の複屈折を補償する入射側の光学補償シート８が配設され、液晶パネル７と出射側の偏光板７４との間には、光学補償シート８は配設されていない。また、入射側の偏光板７３と入射側の光学補償シート８は、後述する図６に示すように光軸Ｌに対して傾斜調整自在、且つ、光軸Ｌに直交する面内にて回動調整自在に構成されている。 Between the liquid crystal panel 7 and the incident-side polarizing plate 73, an incident-side optical compensation sheet 8 that compensates for the birefringence of the liquid crystal molecules in the liquid crystal panel 7 is disposed, and the liquid crystal panel 7 and the outgoing-side polarizing plate are disposed. The optical compensation sheet 8 is not disposed between the two. Further, the incident-side polarizing plate 73 and the incident-side optical compensation sheet 8 can be adjusted in inclination with respect to the optical axis L and rotated in a plane perpendicular to the optical axis L as shown in FIG. It is configured to be adjustable.
図３は、入射側の光学補償シート８の回動機構を示す分解斜視図である。略Ｌ字状の回動部材５０の長辺側には、光軸Ｌに対応する位置に透孔５１が形成され、入射側の光学補償シート８が貼り付けられた入射側の偏光板７３が嵌合するようになっている。回動部材５０の短辺側には、光軸Ｌに略平行な一対の長孔５２が光軸Ｌの中心に対して略対向する位置に形成されている。回動部材５０の上面両側端部には、調整作業者が操作する摘み部５３が形成されている。 FIG. 3 is an exploded perspective view showing a rotation mechanism of the optical compensation sheet 8 on the incident side. On the long side of the substantially L-shaped rotating member 50, there is an incident-side polarizing plate 73 in which a through hole 51 is formed at a position corresponding to the optical axis L and the incident-side optical compensation sheet 8 is attached. It is designed to fit. On the short side of the rotating member 50, a pair of long holes 52 substantially parallel to the optical axis L are formed at positions substantially opposite to the center of the optical axis L. At both side end portions of the upper surface of the rotating member 50, a knob portion 53 that is operated by an adjustment operator is formed.
回動部材５０に装着される補助部材５４には、一対の長孔５２に対応する位置に後述する螺子６１が螺合する螺子孔５５が形成されている。また、補助部材５４には、光軸Ｌに略直交する方向に一対の長穴５６と一つの長アナ５７が形成されている。 A screw hole 55 into which a screw 61 (described later) is screwed is formed in the auxiliary member 54 attached to the rotation member 50 at a position corresponding to the pair of long holes 52. The auxiliary member 54 is formed with a pair of long holes 56 and one long hole 57 in a direction substantially orthogonal to the optical axis L.
図４及び図５に示すように、シャーシ３上に立設された固定部材５８には、補助部材５４を介して回動部材５０が装着される。固定部材５８には長穴５０対応する位置に一対のガイド軸５９が突出形成されていると共に、長アナ５７に対応する位置に後述するネジ６２が螺合するネジ孔６０が形成されている。 As shown in FIGS. 4 and 5, the rotation member 50 is attached to the fixing member 58 erected on the chassis 3 via the auxiliary member 54. The fixing member 58 has a pair of guide shafts 59 projecting from a position corresponding to the long hole 50, and a screw hole 60 into which a screw 62 described later is screwed at a position corresponding to the long hole 57.
このように構成された、入射側の光学補償シート８が装着された回動部材５０には、補助部材５４が螺子６１により長孔５２を介して固定される。そして、ガイド軸５９を長穴５６に係合させると共に、回動部材５０をネジ６２により長アナ５７を介して固定部材５８に装着することにより回動機構が構成される（図３乃至図６参照）。 The auxiliary member 54 is fixed by the screw 61 through the long hole 52 to the rotating member 50 to which the incident side optical compensation sheet 8 is mounted. Then, the guide shaft 59 is engaged with the elongated hole 56 and the rotating member 50 is mounted on the fixing member 58 via the long hole 57 with the screw 62 (FIGS. 3 to 6). reference).
そして、ネジ６２を緩めて回動部材５０を長穴５６に沿って光軸Ｌに直交する方向に摺動させることにより、入射側の光学補償シート８を光軸Ｌに直交する面内にて回動調整自在に構成することができる。 Then, the screw 62 is loosened and the rotating member 50 is slid along the elongated hole 56 in the direction perpendicular to the optical axis L, so that the optical compensation sheet 8 on the incident side is within the plane perpendicular to the optical axis L. It can comprise so that rotation adjustment is possible.
また、一対の螺子６１の何れか一方の螺子６１を緩めて長孔５２に沿って回動部材５０を摺動させると、他方側の螺子６１を回動中心として、入射側の光学補償シート８を光軸Ｌに対して傾斜調整自在に構成することができる。このようにして、この回動機構により入射側の光学補償シート８を光軸Ｌに対して傾斜調整自在、且つ、光軸Ｌに直交する面内にて回動調整自在に構成することができる。 Further, when one of the pair of screws 61 is loosened and the rotating member 50 is slid along the long hole 52, the incident side optical compensation sheet 8 is centered on the other screw 61. Can be configured so as to be adjustable with respect to the optical axis L. In this way, it is possible to configure the optical compensation sheet 8 on the incident side to be adjustable in inclination with respect to the optical axis L and to be adjustable in a plane orthogonal to the optical axis L by this rotating mechanism. .
尚、入射側の光学補償シート８の調整は、光源３５を発光させて、投写レンズ３６を通して画像をスクリーン３７に表示させ、この画像の黒色と白色のコントラストが鮮明になるように、摘み部５３を操作して光軸Ｌに対する傾斜方向及び光軸Ｌに直交する方向に回動部材５０を回動させることにより行える。 The adjustment of the optical compensation sheet 8 on the incident side is performed by causing the light source 35 to emit light and displaying an image on the screen 37 through the projection lens 36 so that the black and white contrast of this image becomes clear. To rotate the rotating member 50 in the direction of inclination with respect to the optical axis L and in the direction orthogonal to the optical axis L.
そして、入射側の光学補償シート８は光軸Ｌに直交する面内にて、回動自在に調整することができるため、光軸Ｌ方向から見た光学補償シート８内の液晶分子の遅相軸を、液晶パネル７の液晶分子の配向方向と略平行に設定することができる。また、入射側の光学補償シート８は光軸Ｌに対して傾斜自在に調整することができるため、液晶パネル７内の液晶分子の光軸Ｌ方向の遅相軸に対して光学補償シート８の見かけ上の遅相軸を一致させることができる。この結果、黒色と白色のコントラストが鮮明で、且つ、均一な画像を写し出すことができる。 Since the incident-side optical compensation sheet 8 can be freely adjusted in a plane orthogonal to the optical axis L, the phase of liquid crystal molecules in the optical compensation sheet 8 viewed from the optical axis L direction is slow. The axis can be set substantially parallel to the alignment direction of the liquid crystal molecules of the liquid crystal panel 7. Further, since the optical compensation sheet 8 on the incident side can be adjusted to be tiltable with respect to the optical axis L, the optical compensation sheet 8 of the optical compensation sheet 8 with respect to the slow axis of the liquid crystal molecules in the liquid crystal panel 7 in the optical axis L direction. Apparent slow axis can be matched. As a result, the contrast between black and white is clear and a uniform image can be displayed.
また、液晶パネルの視野角特性に応じた光学軸を有する光学補償シートを揃える必要がなく、不要在庫の発生等の弊害を解消できる。また、入射側の偏光板７３と入射側の光学補償シート８とを一体化したことにより構成を簡素化してコンパクト化を図ることができる。 In addition, it is not necessary to prepare an optical compensation sheet having an optical axis corresponding to the viewing angle characteristics of the liquid crystal panel, so that adverse effects such as the occurrence of unnecessary inventory can be eliminated. Further, by integrating the incident-side polarizing plate 73 and the incident-side optical compensation sheet 8, the configuration can be simplified and the size can be reduced.
さらに、光軸Ｌに対して傾斜調整自在、且つ、光軸Ｌに直交する面内にて回動調整自在に構成されている回動部材５０に入射側の光学補償シート８を配置しているため、簡単な構成により入射側の光学補償シート８を光軸Ｌに対して傾斜調整自在、且つ、光軸Ｌに直交する面内にて回動自在に調整することができる。 Further, the optical compensation sheet 8 on the incident side is arranged on a rotation member 50 that is configured to be adjustable with respect to the optical axis L and to be adjustable in a plane orthogonal to the optical axis L. Therefore, the incident-side optical compensation sheet 8 can be adjusted with respect to the optical axis L so as to be tiltable and rotatable within a plane orthogonal to the optical axis L with a simple configuration.
また、液晶パネル７の光入射側に、光軸Ｌに対して傾斜調整自在、且つ、光軸Ｌに直交する面内にて回動調整自在な入射側の光学補償シート８を配置することにより、光軸Ｌのずれを防止することができる。 In addition, by arranging an optical compensation sheet 8 on the incident side that can be adjusted with respect to the optical axis L and can be rotated and adjusted within a plane orthogonal to the optical axis L, on the light incident side of the liquid crystal panel 7. The optical axis L can be prevented from shifting.
また、このようにして、光軸Ｌに対して傾斜調整自在、且つ、光軸Ｌに直交する面内にて回動調整自在な入射側の光学補償シート８をパネルユニットに備えることにより、常に安定して均一な画像を写し出すことができるパネルユニットを構成することができる。 Further, in this way, by providing the panel unit with the optical compensation sheet 8 on the incident side that can be adjusted with respect to the optical axis L and that can be rotated and adjusted within a plane orthogonal to the optical axis L, the panel unit is always equipped. A panel unit capable of stably displaying a uniform image can be configured.
出願人は、入射側の光学補償シート８及び入射側の偏光板７３の調整後に、黒色と白色のコントラスト比を求めて、本発明の第１実施形態の効果を確認した。先ず光源３５を発光させて、且つ液晶パネル７に電界を印加しないでスクリーン３７に白色を表示させる。図７に示すように、スクリーン３７上の画面を９分割して、各分割画面の中央部の照度を測定し、９つの中央部の画面の照度(単位：LUX)の平均値を求めてこの平均値を白画面照度（Ｗave）とする。 The applicant obtained the contrast ratio between black and white after adjusting the optical compensation sheet 8 on the incident side and the polarizing plate 73 on the incident side, and confirmed the effect of the first embodiment of the present invention. First, the light source 35 is caused to emit light, and white is displayed on the screen 37 without applying an electric field to the liquid crystal panel 7. As shown in FIG. 7, the screen on the screen 37 is divided into nine, the illuminance at the center of each divided screen is measured, and the average value of the illuminance (unit: LUX) of the nine central screens is obtained. Let the average value be the white screen illuminance (Wave).
次に、液晶パネル７に電界を印加して、スクリーン３７に黒色を表示させる。そして、上記と同様にスクリーン３７上の画面を９分割して、各分割画面の中央部の照度を測定し、９つの中央部の画面の照度の平均値を求めてこの平均値を黒画面照度（ＢＫave）とする。このＷaveとＢＫaveの比、即ち、コンストラクトを求めたところ、約９５０：１であった。 Next, an electric field is applied to the liquid crystal panel 7 to display black on the screen 37. Then, the screen on the screen 37 is divided into nine in the same manner as described above, the illuminance at the center of each divided screen is measured, the average value of the illuminance at the nine central screens is obtained, and this average value is determined as the black screen (BKave). When the ratio of Wave to BKave, that is, the construct was determined, it was about 950: 1.
また、黒画面におけるＣＩＥ色度を、分割した９画面で測定した結果、（ｘ、ｙ）値のばらつき（Δｘ、Δｙ）は入射側の光学補償シート８を光軸Ｌに直交する面内だけで回動調整した場合（０．０２５、０．０８５）であったが、入射側の光学補償シート８を光軸Ｌに対して傾斜調整及び光軸Ｌに直交する面内にて回動調整した場合（０．０２４、０．０５６）となり、ばらつきを減少させた均一な画像を写し出すことができた。 Further, as a result of measuring the CIE chromaticity on the black screen on the divided nine screens, the variation (Δx, Δy) of the (x, y) values is only in the plane orthogonal to the optical axis L of the incident side optical compensation sheet 8. Was adjusted (0.025, 0.085), but the incident-side optical compensation sheet 8 was tilted with respect to the optical axis L and adjusted in a plane perpendicular to the optical axis L. (0.024, 0.056), and a uniform image with reduced variation could be projected.
尚、第１実施形態では、液晶パネル７の光入射側に光学補償シート８を配設したが、液晶パネル７の光出射側にも光学補償シートを配設した構成にしてもよい。 In the first embodiment, the optical compensation sheet 8 is disposed on the light incident side of the liquid crystal panel 7. However, the optical compensation sheet may be disposed on the light emitting side of the liquid crystal panel 7.
また、入射側の光学補償シート８を回動調整する構成は第１実施形態の構成に限定されるものではなく、種々の構成により実施してもよい。
（第２実施形態）
図８乃至図１０は本発明の第２実施形態を示している。尚、第１実施形態と同一部品については同一符号を付して説明を省略する。
Further, the configuration for rotating and adjusting the optical compensation sheet 8 on the incident side is not limited to the configuration of the first embodiment, and may be implemented by various configurations.
(Second Embodiment)
8 to 10 show a second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
第２実施形態の光学補償シート８も第１実施形態と同様に液晶パネル７の光入射側に配置されている。偏光板７３は移動部材６５に装着され、移動部材６５は光軸Ｌに直交する面内にて回動自在に構成されている。また、光学補償シート８が装着されている回動部材５０aは移動部材６５に対して光軸Ｌに直交する面内にて回動自在、且つ、傾斜調整自在に構成されている。 The optical compensation sheet 8 of the second embodiment is also arranged on the light incident side of the liquid crystal panel 7 as in the first embodiment. The polarizing plate 73 is attached to the moving member 65, and the moving member 65 is configured to be rotatable in a plane orthogonal to the optical axis L. Further, the rotation member 50a on which the optical compensation sheet 8 is mounted is configured to be rotatable and adjustable in inclination within a plane perpendicular to the optical axis L with respect to the moving member 65.
略Ｌ字状の回動部材５０ａの長辺側には、光軸Ｌに対応する位置に光学補償シート８が装着されている。回動部材５０の短辺側には、光軸Ｌに略平行な一対の長孔５２が光軸Ｌの中心に対して略対向する位置に形成されている。回動部材５０の上面両側端部には、調整作業者が操作する摘み部５３が形成されている。 An optical compensation sheet 8 is mounted at a position corresponding to the optical axis L on the long side of the substantially L-shaped rotation member 50a. On the short side of the rotating member 50, a pair of long holes 52 substantially parallel to the optical axis L are formed at positions substantially opposite to the center of the optical axis L. At both side end portions of the upper surface of the rotating member 50, a knob portion 53 that is operated by an adjustment operator is formed.
回動部材５０に装着される補助部材５４には、一対の長孔５２に対応する位置に後述する螺子６１が螺合する図示しない螺子孔が形成されている。また、補助部材５４には、光軸Ｌに略直交する方向に長アナ５７が形成されている。 The auxiliary member 54 attached to the rotating member 50 is formed with a screw hole (not shown) into which a screw 61 described later is screwed at a position corresponding to the pair of long holes 52. In addition, a long hole 57 is formed in the auxiliary member 54 in a direction substantially orthogonal to the optical axis L.
図８に示すように、移動部材６５には、光軸Ｌに略直交する方向に一対の長穴５６と、長アナ５７と第２長アナ５７ａが形成されている。シャーシ３上に立設された固定部材５８ａには、移動部材６５を介して回動部材５０ａが装着される。固定部材５８ａには長穴５０に対応する位置に一対のガイド軸５９が突出形成されていると共に、長アナ５７に対応する位置に後述するネジ６２が螺合するネジ孔６０と、長アナ５７ａに対応する位置に後述するネジ６２ａが螺合するネジ孔６０ａが形成されている。 As shown in FIG. 8, the moving member 65 is formed with a pair of long holes 56, a long hole 57, and a second long hole 57a in a direction substantially orthogonal to the optical axis L. A rotating member 50a is attached to the fixing member 58a erected on the chassis 3 via a moving member 65. A pair of guide shafts 59 project from the fixing member 58a at a position corresponding to the long hole 50, and a screw hole 60 into which a screw 62 described later is screwed at a position corresponding to the long hole 57, and a long hole 57a. A screw hole 60a into which a later-described screw 62a is screwed is formed at a position corresponding to.
このように構成された、光学補償シート８が装着された回動部材５０ａは、移動部材６５を介して固定部材５８ａに螺子６２ａにより固定される。この時、ガイド軸５９は長穴５６に係合する。 The rotating member 50a having the optical compensation sheet 8 thus configured is fixed to the fixing member 58a by the screw 62a via the moving member 65. At this time, the guide shaft 59 engages with the elongated hole 56.
そして、ネジ６２を緩めて回動部材５０ａを長穴５６に沿って光軸Ｌに直交する方向に摺動させることにより、光学補償シート８を光軸Ｌに直交する面内にて回動調整自在に構成することができる。 Then, the screw 62 is loosened and the rotating member 50a is slid in the direction orthogonal to the optical axis L along the elongated hole 56, whereby the optical compensation sheet 8 is adjusted to rotate in a plane orthogonal to the optical axis L. It can be configured freely.
また、一対の螺子６１の何れか一方の螺子６１を緩めて長孔５２に沿って回動部材５０ａを摺動させると、他方側の螺子６１を回動中心として、入射側の光学補償シート８を光軸Ｌに対して傾斜調整自在に構成することができる。このようにして、この回動機構により入射側の光学補償シート８を光軸Ｌに対して傾斜調整自在、且つ、光軸Ｌに直交する面内にて回動調整自在に構成することができる。また、螺子６２ａを緩めて移動部材６５を長穴５６に沿って光軸Ｌに直交する方向に摺動させることにより、偏光板７３を光軸Ｌに直交する面内にて回動調整自在に構成することができる。 When one of the pair of screws 61 is loosened and the rotating member 50a is slid along the long hole 52, the incident side optical compensation sheet 8 is centered on the other screw 61. Can be configured so as to be adjustable with respect to the optical axis L. In this way, it is possible to configure the optical compensation sheet 8 on the incident side to be adjustable in inclination with respect to the optical axis L and to be adjustable in a plane orthogonal to the optical axis L by this rotating mechanism. . Further, by loosening the screw 62a and sliding the moving member 65 in the direction perpendicular to the optical axis L along the long hole 56, the polarizing plate 73 can be freely adjusted in a plane perpendicular to the optical axis L. Can be configured.
また、入射側の光学補償シート８の調整は、第１実施形態と同様に光源３５を発光させて、投写レンズ３６を通して画像をスクリーン３７に表示させ、この画像の黒色と白色のコントラストが鮮明になるように、摘み部５３を操作して光軸Ｌに対する傾斜方向及び光軸Ｌに直交する方向に回動部材５０を回動させることにより行える。 The adjustment of the optical compensation sheet 8 on the incident side is performed by causing the light source 35 to emit light and displaying the image on the screen 37 through the projection lens 36 as in the first embodiment, and the black and white contrast of this image becomes clear. In this manner, the knob 53 is operated to rotate the rotating member 50 in the direction inclined with respect to the optical axis L and in the direction perpendicular to the optical axis L.
尚、第１実施形態と同様に光学補償シート８及び偏光板７３の調整後に黒色と白色のコントラスト比を求めて、第２実施形態の効果を確認すると第１実施形態と同様な効果を奏することが確認できた。また、黒画面におけるＣＩＥ色度を測定した結果、（ｘ,ｙ）値のばらつき（Δｘ、Δｙ）を第１実施形態と同様に減少させることができ、ばらつきを減少させた均一な画像を映し出すことができた。 Similar to the first embodiment, after adjusting the optical compensation sheet 8 and the polarizing plate 73, the contrast ratio between black and white is obtained, and if the effect of the second embodiment is confirmed, the same effect as the first embodiment is obtained. Was confirmed. Further, as a result of measuring the CIE chromaticity on the black screen, the variation (Δx, Δy) of the (x, y) value can be reduced as in the first embodiment, and a uniform image with reduced variation is displayed. I was able to.
さらに、本発明の第２実施形態により、偏光板７３と光学補償シート８とを互いに離して配置することができ、偏光板７３及び光学補償シート８の冷却効果を向上させることができるため、偏光板７３及び光学補償シート８の長寿命化を図ることができる。また、偏光板７３と光学補償シート８とを別々に構成しているため、偏光板７３あるいは光学補償シート８の何れかの一方の劣化により交換の必要性が生じた場合、交換が必要な部品だけ交換することができる。この結果、不必要な部品の交換をなくすことができる。 Furthermore, according to the second embodiment of the present invention, the polarizing plate 73 and the optical compensation sheet 8 can be arranged apart from each other, and the cooling effect of the polarizing plate 73 and the optical compensation sheet 8 can be improved. The life of the plate 73 and the optical compensation sheet 8 can be extended. In addition, since the polarizing plate 73 and the optical compensation sheet 8 are separately configured, if the replacement of the polarizing plate 73 or the optical compensation sheet 8 is necessary due to deterioration of one of the components, the parts that need to be replaced Can only be exchanged. As a result, unnecessary replacement of parts can be eliminated.
７ 液晶パネル
７ａ 液晶パネル
７ｂ 液晶パネル
８ 入射側の光学補償シート
３５ 光源
５０ 回動部材
７３ 入射側の偏光板
７４ 出射側の偏光板
7 Liquid crystal panel 7a Liquid crystal panel 7b Liquid crystal panel 8 Incident side optical compensation sheet 35 Light source 50 Rotating member 73 Incident side polarizing plate 74 Outgoing side polarizing plate
Claims (2)
前記光学補償シートは、シャーシに保持された補助部材に対して回動自在な回動部材に配置され、回動部材は、上方に形成された摘み部を操作することにより、光学補償シートが光軸に対して傾斜調整自在となるように構成されていると共に、傾斜調整後には補助部材に固定され、
前記補助部材は、シャーシに対して光軸に直交する面内にて回動自在となるように構成されていることを特徴とする投写装置。 Each liquid crystal panel irradiated with green light, red light, and blue light dispersed from a light source and encapsulating liquid crystal molecules, a polarizing plate disposed at a position facing each liquid crystal panel, a polarizing plate, and a liquid crystal panel In a projection apparatus that is disposed between and an optical compensation sheet that compensates for birefringence of liquid crystal molecules,
The optical compensation sheet is disposed on a pivoting member that is rotatable with respect to an auxiliary member held by the chassis . The pivoting member operates a knob formed on the upper side , so that the optical compensation sheet is lighted. It is configured to be tiltable with respect to the shaft, and is fixed to the auxiliary member after tilt adjustment ,
The projection apparatus , wherein the auxiliary member is configured to be rotatable in a plane perpendicular to the optical axis with respect to the chassis .
前記光学補償シートは、シャーシに保持された補助部材に対して回動自在な回動部材に配置され、回動部材は、上方に形成された摘み部を操作することにより、光学補償シートが光軸に対して傾斜調整自在となるように構成されていると共に、傾斜調整後には補助部材に固定され、
前記補助部材は、シャーシに対して光軸に直交する面内にて回動自在となるように構成されていることを特徴とする液晶パネルユニット。 Each liquid crystal panel irradiated with green light, red light, and blue light dispersed from a light source and enclosing liquid crystal molecules, a polarizing plate disposed at a position facing each liquid crystal panel, a polarizing plate, and a liquid crystal panel In a liquid crystal panel unit comprising an optical compensation sheet that is disposed between and compensates for the birefringence of liquid crystal molecules,
The optical compensation sheet is disposed on a pivoting member that is rotatable with respect to an auxiliary member held by the chassis . The pivoting member operates a knob formed on the upper side , so that the optical compensation sheet is lighted. It is configured to be tiltable with respect to the shaft, and is fixed to the auxiliary member after tilt adjustment ,
The liquid crystal panel unit , wherein the auxiliary member is configured to be rotatable in a plane perpendicular to the optical axis with respect to the chassis .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010119086A JP5162625B2 (en) | 2010-05-25 | 2010-05-25 | Projection device and liquid crystal panel unit used in projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010119086A JP5162625B2 (en) | 2010-05-25 | 2010-05-25 | Projection device and liquid crystal panel unit used in projection device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008101036A Division JP2008217028A (en) | 2008-04-09 | 2008-04-09 | Projector and liquid crystal panel unit to be used for the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010237690A JP2010237690A (en) | 2010-10-21 |
| JP5162625B2 true JP5162625B2 (en) | 2013-03-13 |
Family
ID=43091998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010119086A Active JP5162625B2 (en) | 2010-05-25 | 2010-05-25 | Projection device and liquid crystal panel unit used in projection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5162625B2 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0421814A (en) * | 1990-05-17 | 1992-01-24 | Seiko Epson Corp | Projection type color display device |
| JP2966566B2 (en) * | 1991-04-30 | 1999-10-25 | 三洋電機株式会社 | Liquid crystal panel mounting device in optical equipment |
| JP3166894B2 (en) * | 1994-12-20 | 2001-05-14 | 株式会社富士通ゼネラル | LCD panel adjustment device |
| JPH08220999A (en) * | 1995-02-20 | 1996-08-30 | Fujitsu General Ltd | Adjusting device for liquid crystal panel |
| JP2002182213A (en) * | 2000-12-12 | 2002-06-26 | Sony Corp | Projection liquid crystal display and its adjustment method |
| JP3733112B2 (en) * | 2002-12-24 | 2006-01-11 | 三洋電機株式会社 | Projection apparatus and liquid crystal panel unit used in the projection apparatus |
-
2010
- 2010-05-25 JP JP2010119086A patent/JP5162625B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010237690A (en) | 2010-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100706483B1 (en) | Projection apparatus and liquid crystal panel unit for use with the projection apparatus | |
| JP3603650B2 (en) | Adjustment mechanism and projection display device using the same | |
| US7557868B2 (en) | Liquid crystal projector device | |
| US20030184870A1 (en) | Reflective time-division image projector | |
| JP3733112B2 (en) | Projection apparatus and liquid crystal panel unit used in the projection apparatus | |
| CN110515261B (en) | Projection device | |
| JP5084242B2 (en) | Optical element adjustment mechanism, liquid crystal display device, and projection display device | |
| CN112513734B (en) | Optical module, projection type image display apparatus, and method of manufacturing optical module | |
| JP2009169046A (en) | Compensation element adjustment mechanism and projector | |
| JP5162625B2 (en) | Projection device and liquid crystal panel unit used in projection device | |
| JP2009169042A (en) | Compensation element adjustment mechanism and projector | |
| JP2008217028A (en) | Projector and liquid crystal panel unit to be used for the same | |
| JP4055465B2 (en) | projector | |
| JP3831742B2 (en) | Projection apparatus and liquid crystal panel unit used in the projection apparatus | |
| JP2009058727A (en) | Optical component, optical unit and display device | |
| JP2009229475A (en) | Projector | |
| JPH04181938A (en) | Projection type display device | |
| JP2005107364A (en) | Picture display device | |
| JP2006072149A (en) | Liquid crystal projector apparatus | |
| JP4194256B2 (en) | Liquid crystal projection display | |
| JP2001051347A (en) | Rear projection type display device | |
| JP3708921B2 (en) | LCD projector | |
| JP4806912B2 (en) | Image projection device | |
| JP3452843B2 (en) | Image display device | |
| JP2011191478A (en) | Evaluation device for electro-optical device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20111117 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20111130 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20120120 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120221 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120420 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20121120 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20121217 |
|
| R151 | Written notification of patent or utility model registration |
Ref document number: 5162625 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151221 Year of fee payment: 3 |