JP3058367B2 - Display / imaging device - Google Patents
Display / imaging deviceInfo
- Publication number
- JP3058367B2 JP3058367B2 JP3329872A JP32987291A JP3058367B2 JP 3058367 B2 JP3058367 B2 JP 3058367B2 JP 3329872 A JP3329872 A JP 3329872A JP 32987291 A JP32987291 A JP 32987291A JP 3058367 B2 JP3058367 B2 JP 3058367B2
- Authority
- JP
- Japan
- Prior art keywords
- semi
- transparent mirror
- display
- imaging device
- mirror
- 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.)
- Expired - Lifetime
Links
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＴＶ電話やＴＶ会議シ
ステム等に用いられる表示装置と撮像装置が組み合わさ
った表示・撮像装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display / imaging device in which a display device and an imaging device used in a TV telephone, a TV conference system, and the like are combined.
【０００２】[0002]
【従来の技術】近年、画像符号化技術等の通信技術の発
展により、遠隔地間を映像・音声通信網で結んだＴＶ電
話やＴＶ会議システム等の双方向映像通信が急速に普及
してきている。今後は、ＩＳＤＮ網の充実と伝送網の高
帯域化等により、より高臨場感に溢れた映像がサービス
できることが期待されている。2. Description of the Related Art In recent years, with the development of communication technology such as image coding technology, two-way video communication such as a TV telephone and a TV conference system connecting remote locations with a video / audio communication network has been rapidly spreading. . In the future, the enhancement of the ISDN network and the increase in the bandwidth of the transmission network are expected to provide a more realistic video service.
【０００３】図３に現在双方向映像通信に用いられる表
示・撮像装置を示す。撮像装置２がＣＲＴディスプレイ
等の表示装置１の上面または側面にあり、使用者Ｍの撮
像を行う。しかし、このような装置を利用する者は、通
常の表示装置１を見ているため、撮像装置２で撮像を行
っても、使用者Ｍは撮像装置２の方に視線を向けること
はない。そのため、せっかくの高臨場感溢れる映像が送
信可能となっても、対話者同士の視線が一致しない不自
然な会話になるという欠点があった。FIG. 3 shows a display / imaging device currently used for two-way video communication. The imaging device 2 is provided on the upper surface or side surface of the display device 1 such as a CRT display, and captures an image of the user M. However, since a user using such a device is looking at the normal display device 1, the user M does not look at the imaging device 2 even if an image is captured by the imaging device 2. For this reason, there has been a drawback in that even if it is possible to transmit a video full of a high sense of reality, the conversation between the interlocutors is unnatural because their eyes do not match.
【０００４】対話者同士の視線を一致させる方法に、半
透鏡を用いる方式がある。図４に半透鏡を用いた表示・
撮像装置の構成図を示す。表示装置１の前方に半透鏡３
をψだけ傾けて設置されている。被写体からの像は半透
鏡３で反射され、半透鏡３の上方にある撮像装置２によ
り撮像されることになる。その結果、表示装置１の位置
から撮像したことと同等になり、使用者Ｍの視線は表示
装置１に向けられているため、通話者と表示画面に写し
出された通話相手と視線が一致することになる。しかし
ながら、図３のような構成では、表示装置１の画面サイ
ズが大きくなるとともに、半透鏡３のサイズも大きくな
っていく。そのため、図中に示した奥行きｄが大きくな
ってしまい、表示・撮像装置自体も大型で、かつ高価な
ものになってしまう欠点があった。As a method of matching the lines of sight of interlocutors, there is a method using a semi-transparent mirror. FIG. 4 shows a display using a semi-transparent mirror.
1 shows a configuration diagram of an imaging device. A semi-transparent mirror 3 in front of the display device 1
Is installed at an angle of ψ. The image from the subject is reflected by the semi-transparent mirror 3 and is imaged by the imaging device 2 above the semi-transparent mirror 3. As a result, it is equivalent to an image taken from the position of the display device 1, and since the line of sight of the user M is directed to the display device 1, the line of sight of the caller matches the line of sight of the other party displayed on the display screen. become. However, in the configuration as shown in FIG. 3, the screen size of the display device 1 increases and the size of the semi-transparent mirror 3 also increases. For this reason, the depth d shown in the figure becomes large, and the display / imaging device itself is disadvantageously large and expensive.
【０００５】そこで、視線一致を実現した小型で安価な
表示・撮像装置を構成するため、微小な半透鏡を複数組
み合わせて半透鏡３を構成する方法が提案された（特願
平２−７３４００号参照）。図５に微小半透鏡４を組み
合わせた半透鏡３Ａの断面図、図６に微小半透鏡４を組
み合わせた半透鏡３Ａを用いて構成した場合の表示・撮
像装置の構成図を示す。図中のθは微小半透鏡４の傾き
を示している。このような構成を行うと、図中に示した
ように入射光の一部は角度２θ方向に反射されることに
なる。その際、微小半透鏡４の奥行きｄは小さくするこ
とが可能なため、従来の半透鏡３を傾けて設置する方式
より表示・撮像装置の小型化が図れる。なお、５は前記
半透鏡３Ａからの反射光を撮像装置２に入射させるため
のミラーである。この場合、ミラー５を使用せず、ミラ
ー５の位置に下向きに撮像装置２を設けてもよい。[0005] In order to construct a small and inexpensive display / imaging device that achieves eye-gaze matching, a method has been proposed in which a plurality of microscopic semi-transparent mirrors are combined to form a semi-transparent mirror 3 (Japanese Patent Application No. 2-73400). reference). FIG. 5 is a cross-sectional view of a semi-transparent mirror 3A in which the micro semi-transparent mirror 4 is combined, and FIG. 6 is a configuration diagram of a display / imaging apparatus in the case of using the semi-transparent mirror 3A in which the micro semi-transparent mirror 4 is combined. In the drawing, θ indicates the inclination of the small semi-transparent mirror 4. With such a configuration, a part of the incident light is reflected in the angle 2θ direction as shown in the figure. At this time, since the depth d of the small semi-transparent mirror 4 can be reduced, the size of the display / imaging apparatus can be reduced compared to the conventional method in which the semi-transparent mirror 3 is installed at an angle. Reference numeral 5 denotes a mirror for causing the reflected light from the semi-transparent mirror 3A to enter the imaging device 2. In this case, the imaging device 2 may be provided downward at the position of the mirror 5 without using the mirror 5.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、図５に
示したような構成の半透鏡３Ａを用いた場合、通常の半
透鏡を用いた方式に比べ、解像度が低下するという欠点
があった。この解像度の低下原因は半透鏡３Ａを微小分
割し再構成した構造であるため、各々の微小半透鏡４で
反射された像の間に光路差が生じるためにある。この光
路差は微小半透鏡４の傾きθに依存し、傾きθが小さけ
れば光路差も小さくなり解像度の劣化が緩和され、傾き
θが大きければ光路差も大きくなり解像度の劣化が顕著
になる。解像度の劣化を防ぐには、微小半透鏡４の傾き
θを小さくすれば良いのだが、傾きθが小さいと図中に
示す奥行きｄが大きくなり、表示・撮像装置の小型化が
図れなくなる。そのため、解像度劣化がなく装置の小型
化が図れる方式の開発が必須であった。However, when the semi-transparent mirror 3A having the structure shown in FIG. 5 is used, there is a disadvantage that the resolution is reduced as compared with a system using a normal semi-transparent mirror. The cause of the decrease in resolution is that the semi-transmissive mirror 3A is finely divided and reconstructed, and thus an optical path difference occurs between the images reflected by the respective micro-translucent mirrors 4. This optical path difference depends on the inclination θ of the micro-semi-transparent mirror 4. If the inclination θ is small, the optical path difference is small and the degradation of the resolution is alleviated. If the inclination θ is large, the optical path difference is large and the resolution is remarkably deteriorated. In order to prevent the resolution from deteriorating, it is only necessary to reduce the inclination θ of the micro-semi-transparent mirror 4. However, if the inclination θ is small, the depth d shown in the figure becomes large, and the display / imaging device cannot be downsized. Therefore, it was necessary to develop a system capable of reducing the size of the apparatus without degradation in resolution.
【０００７】本発明の目的は、ＴＶ電話やＴＶ会議シス
テム等に用いられる微小半透鏡を複数組み合わせて視線
一致を実現した表示・撮像装置において、半透鏡を微小
に分割したことに起因して生じる撮像画像の解像度劣化
を緩和し、撮像画像の画質向上を図ることにある。An object of the present invention arises from the fact that a semi-transparent mirror is finely divided in a display / imaging apparatus which realizes eye-gaze coincidence by combining a plurality of micro-translucent mirrors used for a TV telephone, a TV conference system and the like. An object of the present invention is to alleviate the degradation of the resolution of a captured image and improve the image quality of the captured image.
【０００８】[0008]
【課題を解決するための手段】本発明にかかる表示・撮
像装置は、複数の微小半透鏡からなる半透鏡において、
半透鏡を傾けて設置したものである。A display / imaging device according to the present invention is a semi-transparent mirror comprising a plurality of micro semi-transparent mirrors.
It is installed with a semi-transparent mirror tilted.
【０００９】[0009]
【００１０】[0010]
【作用】本発明によれば、半透鏡を傾けた分、微小半透
鏡の傾きを緩くすることができるので、解像度劣化が緩
和される。According to the present invention, the inclination of the microscopic semi-transparent mirror can be reduced by an amount corresponding to the inclination of the semi-transparent mirror, so that the resolution degradation is reduced.
【００１１】[0011]
【００１２】[0012]
【実施例】図１に本発明の表示・撮像装置の構成図を示
す。図６に示した従来例に比べ、半透鏡３Ａがψだけ傾
いて設置されている。さらに、図１で用いられている半
透鏡３Ａの微小半透鏡４の傾きθ′は、図６に用いる場
合に比べ小さく（θ＞θ′）して、解像度の劣化を緩和
している。FIG. 1 is a block diagram of a display / image pickup apparatus according to the present invention. Compared with the conventional example shown in FIG. 6, the semi-transparent mirror 3A is installed inclined by ψ. Further, the inclination θ ′ of the micro semi-transparent mirror 4 of the semi-transparent mirror 3A used in FIG. 1 is smaller (θ> θ ′) than in the case of FIG.
【００１３】半透鏡３Ａ自体を傾きψだけ傾けているた
め、反射光の角度は表示画面の法線方向に対し、２
（θ′＋ψ）方向になる。そのため、θ′＋ψ＝４５°
になるようにθ′とψを選択すれば、例えばθ′＝２０
°，ψ＝２５°とすれば、ミラー５をちょうど傾けた半
透鏡３Ａの真上に設置すればよく、奥行きｄは実質上半
透鏡３Ａを傾けた際に生じる分、すなわちＬｓｉｎψ＝
０．３４Ｌとなる。ただし、図１に示したように、半透
鏡３Ａの長さをＬとしてある。それに対し図６の場合、
奥行きｄはＬｔａｎ（９０−２θ）／２と表され、θ＝
２５°の場合ｄ＝０．４２Ｌとなり、本発明の場合と比
べ奥行きが大きくなり、θ＝３０°ではｄ＝０．２９Ｌ
となり、本発明よりも奥行きを小さくすることができる
が、解像度は格段に劣化することになる。そのため、図
６に示した構成では解像度の劣化防止と装置の小型化を
共に図ることはできないが、本発明では、前述のように
微小半透鏡４の傾きθを緩くすることによる解像度劣化
の緩和と、半透鏡３Ａを傾けることによる装置の小型化
の両方を実現できる。Since the semi-transparent mirror 3A is tilted by the angle ψ, the angle of the reflected light is 2 ° with respect to the normal direction of the display screen.
(Θ ′ + ψ) direction. Therefore, θ '+ ψ = 45 °
If θ ′ and ψ are selected such that
If ° and ψ = 25 °, the mirror 5 may be installed directly above the semi-transparent mirror 3A just tilted, and the depth d is substantially the amount generated when the semi-transparent mirror 3A is tilted, ie, L sin ψ =
0.34L. However, as shown in FIG. 1, the length of the semi-transparent mirror 3A is L. In contrast, in the case of FIG.
The depth d is expressed as Ltan (90−2θ) / 2, and θ =
In the case of 25 °, d = 0.42 L, which is larger than that of the present invention, and when θ = 30 °, d = 0.29 L.
Thus, the depth can be made smaller than that of the present invention, but the resolution is remarkably deteriorated. Therefore, the configuration shown in FIG. 6 cannot prevent both the resolution degradation and the size reduction of the apparatus. However, in the present invention, as described above, the resolution degradation by reducing the inclination θ of the micro semi-transparent mirror 4 is reduced. And miniaturization of the apparatus by inclining the semi-transparent mirror 3A can be realized.
【００１４】また、半透鏡３Ａを傾ける代りに、図２に
示したように半透鏡３Ａの断面をくさび形にして、微小
半透鏡４の配列面を傾けた半透鏡３Ａの構成を取ること
により、全く同様な効果が得られるが、本発明の主旨か
ら言えば自明のことである。Instead of inclining the semi-transparent mirror 3A, the semi-transparent mirror 3A is formed in a wedge-shaped cross-section as shown in FIG. Although the same effect can be obtained, it is obvious from the gist of the present invention.
【００１５】[0015]
【発明の効果】本発明は以上説明したように、反射方向
が同一の多数の微小半透鏡から構成される半透鏡を前記
表示装置前方に傾けて設置したことにより、この半透鏡
を構成する各微少半透鏡の傾きを緩くすることができる
ため、解像度の劣化を緩和できるとともに、表示・撮像
装置の小型化が図れる。According to the present invention, as described above, the reflection direction
The but the semitransparent mirror composed of the same number of minute half mirror
By tilting and installing the display device in front of the display device, the inclination of each microscopic semi-transparent mirror constituting the semi-transparent mirror can be reduced, so that the deterioration of resolution can be reduced and the size of the display / imaging device can be reduced.
【００１６】[0016]
【図１】本発明の表示・撮像装置の一実施例の構成を示
す図である。FIG. 1 is a diagram showing a configuration of an embodiment of a display / imaging apparatus of the present invention.
【図２】本発明に用いる微小半透鏡を複数組み合わせた
構成の断面をくさび形にした場合の半透鏡の断面図であ
る。FIG. 2 is a cross-sectional view of a semi-transparent mirror in a case where a cross-section of a configuration in which a plurality of micro semi-transparent mirrors used in the present invention are combined has a wedge shape.
【図３】従来の表示・撮像装置の構成図である。FIG. 3 is a configuration diagram of a conventional display / imaging device.
【図４】通常のハーフミラーを用いた表示・撮像装置の
構成図である。FIG. 4 is a configuration diagram of a display / imaging device using a normal half mirror.
【図５】先に提案した微小半透鏡を複数組み合わせた構
成の半透鏡の断面図である。FIG. 5 is a cross-sectional view of a semi-transparent mirror having a configuration in which a plurality of previously proposed micro semi-transparent mirrors are combined.
【図６】図５の半透鏡を用いた場合の表示・撮像装置の
構成図である。FIG. 6 is a configuration diagram of a display / imaging device when the semi-transparent mirror of FIG. 5 is used.
１ 表示装置 ２ 撮像装置 ３Ａ 半透鏡 ４ 微小半透鏡 ５ ミラー Reference Signs List 1 display device 2 imaging device 3A semi-transparent mirror 4 micro semi-transparent mirror 5 mirror
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中嶋 秀樹 東京都千代田区内幸町１丁目１番６号 日本電信電話株式会社内 (56)参考文献 特開 平４−150684（ＪＰ，Ａ) 特開 平４−315390（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H04N 7/14 - 7/173 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hideki Nakajima 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (56) References JP-A-4-150684 (JP, A) JP-A-Hei 4-315390 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) H04N 7/ 14-7/173
Claims (1)
一の多数の微小半透鏡からなる半透鏡とから構成され、
前記表示装置の前面に前記半透鏡を設置し、前記表示装
置前方の被写体を前記半透鏡からの反射像として前記表
示装置の周囲に設置された前記撮像装置により撮像を行
う表示・撮像装置において、前記半透鏡を前記表示装置
前方に傾けて設置したことを特徴とする表示・撮像装
置。1. The display device, the imaging device, and the reflection direction are the same.
A semi-transparent mirror consisting of a large number of micro semi-transparent mirrors,
A display / imaging apparatus in which the semi-transparent mirror is installed on the front surface of the display device and an image of a subject in front of the display device is captured by the imaging device installed around the display device as a reflection image from the semi-transparent mirror, A display / imaging device, wherein the semi-transparent mirror is installed to be inclined in front of the display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3329872A JP3058367B2 (en) | 1991-11-19 | 1991-11-19 | Display / imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3329872A JP3058367B2 (en) | 1991-11-19 | 1991-11-19 | Display / imaging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05145912A JPH05145912A (en) | 1993-06-11 |
| JP3058367B2 true JP3058367B2 (en) | 2000-07-04 |
Family
ID=18226188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3329872A Expired - Lifetime JP3058367B2 (en) | 1991-11-19 | 1991-11-19 | Display / imaging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3058367B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7916167B2 (en) * | 2003-07-16 | 2011-03-29 | Semiconductor Energy Laboratory Co., Ltd. | Display device having image pickup function and two-way communication system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI381702B (en) | 2003-06-17 | 2013-01-01 | Semiconductor Energy Lab | A display device having an image pickup function and a two-way communication system |
-
1991
- 1991-11-19 JP JP3329872A patent/JP3058367B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7916167B2 (en) * | 2003-07-16 | 2011-03-29 | Semiconductor Energy Laboratory Co., Ltd. | Display device having image pickup function and two-way communication system |
| CN1578418B (en) * | 2003-07-16 | 2012-04-25 | 株式会社半导体能源研究所 | Display device having image pickup function and two-way communication system |
| US9398178B2 (en) | 2003-07-16 | 2016-07-19 | Semiconductor Energy Laboratory Co., Ltd. | Display device having image pickup function and two-way communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05145912A (en) | 1993-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0581221B1 (en) | Display and image capture apparatus | |
| JP2959732B2 (en) | Display / imaging device | |
| US5666155A (en) | Eye contact video telephony | |
| EP0623270A1 (en) | Video teleconferencing system | |
| JP3058367B2 (en) | Display / imaging device | |
| JP2943940B2 (en) | Display / imaging device | |
| JP3058369B2 (en) | Display / imaging device | |
| JP2859414B2 (en) | Display / imaging device | |
| JP2859417B2 (en) | Display / imaging device | |
| JP3209790B2 (en) | Display / imaging device | |
| JP3087915B2 (en) | Display / imaging device | |
| JP3045341B2 (en) | Display / imaging device | |
| JP3006726B2 (en) | Display / imaging device | |
| JP3242764B2 (en) | Display screen | |
| JPS63240283A (en) | Video transmitter/receiver | |
| JP3001251B2 (en) | Display / imaging device | |
| JP3122529B2 (en) | Display / imaging device | |
| JPH06233290A (en) | Image pickup and display device | |
| JP3122543B2 (en) | Display / imaging device | |
| JP3122528B2 (en) | Display / imaging device | |
| JPH02104080A (en) | Still picture video telephone set | |
| JP2645230B2 (en) | Video display device and multimedia display device | |
| JPH06253303A (en) | Photographic display device | |
| JPH0358589A (en) | Video telephone set | |
| JPH07281263A (en) | Thinned camera |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090421 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090421 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100421 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100421 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110421 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120421 Year of fee payment: 12 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120421 Year of fee payment: 12 |