JP2017107046A5 - - Google Patents
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- JP2017107046A5 JP2017107046A5 JP2015240239A JP2015240239A JP2017107046A5 JP 2017107046 A5 JP2017107046 A5 JP 2017107046A5 JP 2015240239 A JP2015240239 A JP 2015240239A JP 2015240239 A JP2015240239 A JP 2015240239A JP 2017107046 A5 JP2017107046 A5 JP 2017107046A5
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- 230000003287 optical Effects 0.000 claims 27
- 230000001154 acute Effects 0.000 claims 1
- 239000011521 glass Substances 0.000 description 1
Description
図示はしないが、第４の実施形態における装着型映像表示装置１０１も、第１の実施形態と同様に、眼鏡等に装着されて使用される。装着型映像表示装置１０１は、導光プリズム１０３と、正の屈折力をもつ接眼窓６と、映像表示素子８を備えている。導光プリズム１０３は、第１の実施形態の装着型映像表示装置１における導光プリズム３のように溝である遮光部７を有していない点において、導光プリズム３と異なっているが、それ以外の構成は、導光プリズム３と同じである。また、本実施形態における装着型映像表示装置１０１においても、導光プリズム１０３と映像表示素子８が固定されることが望ましく、その一手段として、装着型映像表示装置１０１は、導光プリズム１０３の一部と、映像表示素子８を内部に収容する筐体を有していてもよい。 Although not shown, the wearable video display apparatus 101 according to the fourth embodiment is also used while being worn on glasses or the like as in the first embodiment. The wearable video display device 101 includes a light guide prism 103, an eyepiece window 6 having a positive refractive power, and a video display element 8. The light guide prism 103 is different from the light guide prism 3 in that the light guide prism 103 does not have the light shielding portion 7 that is a groove unlike the light guide prism 3 in the wearable image display device 1 of the first embodiment. Other configurations are the same as those of the light guide prism 3. In the wearable video display device 101 according to the present embodiment, it is desirable that the light guide prism 103 and the video display element 8 are fixed. As one means, the wearable video display device 101 includes the light guide prism 103. You may have a part and the housing | casing which accommodates the video display element 8 inside.
Claims (13)
第１の光学面と、端部を前記第１の光学面に鋭角で隣接させた第２の光学面と、を有した、略Ｌ字型の光軸が通る、棒状の導光プリズムと、
前記第１の光学面に備えられた正の屈折力をもつ接眼窓と、
前記映像光の光線を射出する映像表示素子と、を有し、
前記略Ｌ字型の光軸は、前記第２の光学面でフレネルの反射により屈曲する
ことを特徴とする装着型映像表示装置。 In a wearable image display device that emits image light that forms a virtual image to the user's eyeball through an eyepiece window,
A rod-shaped light guide prism having a first optical surface and a second optical surface having an end adjacent to the first optical surface at an acute angle and passing through a substantially L-shaped optical axis;
An eyepiece window having positive refractive power provided on the first optical surface;
An image display element for emitting the light beam of the image light,
The substantially L-shaped optical axis is bent by Fresnel reflection on the second optical surface.
前記映像表示素子の表示領域の法線方向に前記映像表示素子の表示領域から射出される光線の前記第２の光学面における入射角をθｔ、前記導光プリズムの臨界角をθｃ、前記略L字型の光軸が通る平面内における前記虚像の半画角をＷｖ、前記導光プリズムの屈折率をｎ、前記映像表示素子の中心を通り、且つ前記法線方向に前記映像表示素子から射出される光線と、前記第１の光学面との間の距離をｈ、前記接眼窓と前記接眼窓から前記導光プリズムを通して見える前記映像表示素子の虚像との距離をＬとすると、前記θｔは、以下の条件式
θｃ+Ｗｖ/ｎ−０．０４＜θｔ＜θｃ+２ｈ/Ｌ−０．０４ (ｒａｄ)
を満たす
ことを特徴とする装着型映像表示装置。 The wearable video display device according to claim 1,
The incident angle of the light beam emitted from the display area of the image display element in the normal direction of the display area of the image display element on the second optical surface is θ t , the critical angle of the light guide prism is θ c , Wv is the half field angle of the virtual image in the plane through which the substantially L-shaped optical axis passes, n is the refractive index of the light guide prism, and the video display element passes through the center of the video display element and in the normal direction. H is the distance between the light beam emitted from the first optical surface and the distance between the eyepiece window and the virtual image of the image display element seen through the light guide prism from the eyepiece window, θ t is the following conditional expression θ c + Wv / n−0.04 <θ t <θ c + 2h / L−0.04 (rad)
A wearable video display device characterized by satisfying the above requirements.
さらに、前記映像表示素子から射出される一部の光線を遮蔽するための遮光部と、
前記導光プリズムの一部と、前記映像表示素子と、前記遮光部とを内部に収容した筐体と、を有し、
前記映像表示素子の表示領域の法線方向に前記映像表示素子の表示領域から射出される光線の前記第２の光学面における入射角は、前記導光プリズムの臨界角と略等しい
ことを特徴とする装着型映像表示装置。 The wearable video display device according to claim 1,
Further, a light shielding part for shielding a part of the light emitted from the image display element,
A housing that houses a part of the light guide prism, the video display element, and the light shielding portion;
An incident angle of the light beam emitted from the display area of the video display element in the normal direction of the display area of the video display element on the second optical surface is substantially equal to a critical angle of the light guide prism. Wearable video display device.
前記映像表示素子の表示領域の法線方向に前記映像表示素子の表示領域から射出される光線の前記第２の光学面における入射角をθｔ、前記導光プリズムの臨界角をθｃ、前記略L字型の光軸が通る平面内における前記虚像の半画角をＷｖ、前記導光プリズムの屈折率をｎとすると、前記θｔは、以下の条件式
Ｗｖ＜ｎ×（０．０４+θｔ-θｃ）(ｒａｄ)
を満たす
ことを特徴とする装着型映像表示装置。 The wearable video display device according to claim 2 or 3,
The incident angle of the light beam emitted from the display area of the image display element in the normal direction of the display area of the image display element on the second optical surface is θ t , the critical angle of the light guide prism is θ c , Assuming that the half angle of view of the virtual image in the plane through which the substantially L-shaped optical axis passes is Wv and the refractive index of the light guide prism is n, θt is expressed by the following conditional expression Wv <n × (0.04 + θ t -θ c ) (rad)
A wearable video display device characterized by satisfying the above requirements.
前記第２の光学面は、反射防止膜がほどこされている
ことを特徴とする装着型映像表示装置。 The wearable video display device according to any one of claims 2 to 4,
The wearable image display device, wherein the second optical surface is provided with an antireflection film.
前記映像表示素子は、前記第２の光学面におけるＳ偏光を減光する偏光板を有する
ことを特徴とする装着型映像表示装置。 The wearable video display device according to any one of claims 2 to 5,
The video display device includes a polarizing plate that attenuates S-polarized light on the second optical surface.
前記映像表示素子と前記導光プリズムとの間に偏光板を有し、
更に、前記偏光板は、前記第２の光学面におけるＳ偏光を減光する
ことを特徴とする装着型映像表示装置。 The wearable video display device according to any one of claims 2 to 5,
Having a polarizing plate between the image display element and the light guide prism;
Furthermore, the polarizing plate attenuates S-polarized light on the second optical surface.
前記遮光部は、前記導光プリズムの領域であって、前記筐体に収容された領域内に形成される溝である
ことを特徴とする装着型映像表示装置。 The wearable video display device according to claim 3,
The light-shielding portion is a groove formed in a region of the light guide prism and housed in the housing.
前記遮光部は、前記映像表示素子と前記導光プリズムとの間に設置される
ことを特徴とする装着型映像表示装置。 The wearable video display device according to claim 3,
The light-shielding unit is installed between the video display element and the light guide prism.
前記遮光部は、前記映像表示素子から射出される光線のうち、少なくとも前記第１の光学面へ向かう光線の一部を遮蔽する
ことを特徴とする装着型映像表示装置。 The wearable video display device according to claim 9,
The light-shielding unit shields at least a part of light beams emitted from the image display element toward the first optical surface.
前記導光プリズムは、更に、端部を前記第１の光学面に鈍角で隣接させた第３の光学面を有し、
前記第３の光学面は、前記映像表示素子から射出される光線のうち、当該第３の光学面に入射した光線の一部が、前記第２の光学面に向けて全反射する、ように設けられる
ことを特徴とする装着型映像表示装置。 The wearable video display device according to claim 3,
The light guide prism further includes a third optical surface whose end is adjacent to the first optical surface at an obtuse angle,
The third optical surface is configured such that, of the light rays emitted from the image display element, a part of the light rays incident on the third optical surface is totally reflected toward the second optical surface. A wearable video display device characterized by being provided.
前記映像表示素子の中心から前記映像表示素子の縁までの長さは、前記映像表示素子の中心を通り、且つ前記法線方向に前記映像表示素子から射出される光線と、前記第１の光学面との間の距離より短い
ことを特徴とする装着型映像表示装置。 It is a mounting | wearing type | mold video display apparatus of any one of Claim 2 thru | or 10, Comprising:
The length from the center of the video display element to the edge of the video display element passes through the center of the video display element and is emitted from the video display element in the normal direction, and the first optical A wearable video display device characterized by being shorter than the distance to the surface.
更に、前記第１の光学面に対向した第４の光学面を有し、
前記第１の光学面と前記第４の光学面は、互いに平行な研磨された平面である
ことを特徴とする装着型映像表示装置。 The wearable video display device according to any one of claims 2 to 12,
And a fourth optical surface facing the first optical surface,
Wherein the first optical surface and the fourth optical surface-mounted image display equipment, which is a parallel polished flat to one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015240239A JP6777358B2 (en) | 2015-12-09 | 2015-12-09 | Wearable video display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015240239A JP6777358B2 (en) | 2015-12-09 | 2015-12-09 | Wearable video display device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2017107046A JP2017107046A (en) | 2017-06-15 |
| JP2017107046A5 true JP2017107046A5 (en) | 2019-01-17 |
| JP6777358B2 JP6777358B2 (en) | 2020-10-28 |
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|---|---|---|---|
| JP2015240239A Active JP6777358B2 (en) | 2015-12-09 | 2015-12-09 | Wearable video display device |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3354008B2 (en) * | 1994-07-19 | 2002-12-09 | オリンパス光学工業株式会社 | Head mounted video display |
| JP2000010042A (en) * | 1998-06-19 | 2000-01-14 | Canon Inc | Picture observation device |
| FR2906374B1 (en) * | 2006-09-21 | 2008-12-05 | Essilor Int | ELECTRONIC DISPLAY ARRANGEMENT |
| JP5133925B2 (en) * | 2009-03-25 | 2013-01-30 | オリンパス株式会社 | Head-mounted image display device |
| JP5496030B2 (en) * | 2010-09-16 | 2014-05-21 | オリンパス株式会社 | Head-mounted image display device |
| JP6218649B2 (en) * | 2014-03-11 | 2017-10-25 | オリンパス株式会社 | Virtual image observation optical system and light guide prism |
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