JPH0548994A - Portable projection type projection tv - Google Patents
Portable projection type projection tvInfo
- Publication number
- JPH0548994A JPH0548994A JP3206082A JP20608291A JPH0548994A JP H0548994 A JPH0548994 A JP H0548994A JP 3206082 A JP3206082 A JP 3206082A JP 20608291 A JP20608291 A JP 20608291A JP H0548994 A JPH0548994 A JP H0548994A
- Authority
- JP
- Japan
- Prior art keywords
- projection
- light
- optical axis
- time
- portable
- 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
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、可搬形の投写型プロ
ジェクションＴＶに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable projection type projection TV.
【０００２】[0002]
【従来の技術】図５は従来の可搬形投写型プロジェクシ
ョンＴＶの全体構成図である。図において、１はプロジ
ェクションＴＶ本体、２は投写レンズ、３はスクリー
ン、４はプロジェクションＴＶに映像信号を出力する映
像機器、例えばＶＣＲである。2. Description of the Related Art FIG. 5 is an overall configuration diagram of a conventional portable projection type projection TV. In the figure, 1 is a projection TV main body, 2 is a projection lens, 3 is a screen, and 4 is a video device for outputting a video signal to the projection TV, for example, a VCR.
【０００３】従来の可搬形投写型プロジェクションＴＶ
は、光軸調整を行うための特別な回路等はなく、プロジ
ェクションＴＶの映像入力に適当な映像信号を入力し、
入力した映像を実際にスクリーンに投写し、利用者がこ
れを見ながら映像の歪が最小となるように手動でプロジ
ェクションＴＶ本体の左右の向き及び高さ方向のあおり
の調整を行う。Conventional portable projection type projection TV
Does not have a special circuit for adjusting the optical axis, and inputs an appropriate video signal to the video input of the projection TV,
The input image is actually projected on the screen, and the user manually adjusts the tilt of the projection TV body in the left-right direction and the height direction so that the distortion of the image is minimized while watching the image.
【０００４】[0004]
【発明が解決しようとする課題】従来の可搬形投写型プ
ロジェクションＴＶは以上のように構成されているの
で、光軸調整を行う場合、調整のための判断基準が映し
出された映像の歪だけであり、実際の映像の歪は見きわ
めることは一般の利用者にとっては難しく、テストパタ
ーンを利用してもどちらに動かしてよいか判断できずプ
ロジェクションＴＶの光軸調整はたいへん手間が掛かる
といった問題点があった。Since the conventional portable projection-type projection TV is constructed as described above, when the optical axis is adjusted, only the distortion of the projected image is a criterion for the adjustment. There is a problem that it is difficult for general users to see the actual distortion of the image, and it is difficult to adjust the optical axis of the projection TV because it is not possible to determine which one should be moved by using the test pattern. there were.
【０００５】この発明は上記のような問題点を解決する
ためになされたものであり、光軸調整の調整基準となる
情報を与えることにより、光軸調整が客観的に、かつ容
易に行える可搬形投写型プロジェクションＴＶを得るこ
とを目的としている。The present invention has been made in order to solve the above problems, and it is possible to objectively and easily perform optical axis adjustment by giving information as an adjustment reference for optical axis adjustment. The purpose is to obtain a portable projection type projection TV.
【０００６】[0006]
【課題を解決するための手段】この発明に係る可搬形投
写型プロジェクションＴＶは、発光素子が発光してから
受光素子で受光するまでの時間を測定する時間測定手段
と、時間測定手段の３つ以上で測定された時間を比較す
る比較手段と、この比較手段による比較結果より光軸調
整のための情報を与える表示手段とを備えたものであ
る。A portable projection type projection TV according to the present invention comprises three means, a time measuring means for measuring a time from a light emitting element emitting light to a light receiving element receiving light, and a time measuring means. The comparison means for comparing the times measured above and the display means for giving information for adjusting the optical axis from the comparison result by the comparison means are provided.
【０００７】また、上記時間測定手段の変わりに反射光
の強度を測定する反射光強度測定手段を設けたものであ
る。Further, instead of the time measuring means, a reflected light intensity measuring means for measuring the intensity of the reflected light is provided.
【０００８】[0008]
【作用】この発明における可搬形投写型プロジェクショ
ンＴＶは、発光素子が発光してからこの反射光が受光素
子で受光されるまでの時間を測定し、それぞれの時間測
定手段で測定された測定時間を比較して、その比較結果
をもとに光軸調整のための情報を表示する。利用者はこ
の表示を見ながら光軸調整をするので、作業が容易にな
る。In the portable projection type projection TV according to the present invention, the time from when the light emitting element emits light to when the reflected light is received by the light receiving element is measured, and the measurement time measured by each time measuring means is measured. The comparison is performed, and information for adjusting the optical axis is displayed based on the comparison result. Since the user adjusts the optical axis while looking at this display, the work becomes easy.
【０００９】また、上記の時間測定手段のかわりに設け
られた反射光強度測定で反射光の強度を測定し、それぞ
れの時間測定手段で測定された反射光強度を比較するこ
とで同様の情報を表示することができるので、上記同様
に利用者はこの表示を見ながら光軸調整をするので、作
業が容易になる。Further, the same information is obtained by measuring the intensity of the reflected light by the reflected light intensity measurement provided in place of the time measuring means and comparing the reflected light intensities measured by the respective time measuring means. Since the image can be displayed, the user adjusts the optical axis while looking at this display as in the above, and thus the work becomes easy.
【００１０】[0010]
【実施例】実施例１．図１はこの発明の一実施例による
可搬形投写型プロジェクションＴＶを示す全体構成図で
ある。図１において、１はプロジェクションＴＶ本体、
２はレンズ、５は発光素子、例えば赤外線ＬＥＤ、３は
スクリーンまたは壁、６は反射光を受光する受光素子、
例えば赤外線センサーであり、７は発光素子が発光して
からそのスクリーンによる反射光が受光素子に受光され
るまでの時間を測定する時間測定回路（５、６はそれぞ
れｎ個ずつある。ただしｎは３以上の整数）、８は時間
測定回路７で測定された時間を比較する回路、９は比較
回路８で比較された結果をもとに光軸調整のための情報
を表示する表示部である。EXAMPLES Example 1. FIG. 1 is an overall configuration diagram showing a portable projection type projection TV according to an embodiment of the present invention. In FIG. 1, 1 is a projection TV body,
2 is a lens, 5 is a light emitting element such as an infrared LED, 3 is a screen or wall, 6 is a light receiving element for receiving reflected light,
For example, an infrared sensor, 7 is a time measurement circuit (5 and 6 are n in number, respectively, where n is the time from when the light emitting element emits light to when the light reflected by the screen is received by the light receiving element. (Integer of 3 or more), 8 is a circuit for comparing the time measured by the time measuring circuit 7, and 9 is a display unit for displaying information for adjusting the optical axis based on the result of comparison by the comparison circuit 8. .
【００１１】図２はこの発明による可搬形投写型プロジ
ェクションＴＶの断面図である。図において、２はレン
ズ、５、６は発光素子、受光素子（この場合、発光素
子、受光素子の数はともに４個とした）、１０は左右の
向き及び上下方向のあおりを調整する調整部分である。FIG. 2 is a sectional view of a portable projection type projection TV according to the present invention. In the figure, 2 is a lens, 5 and 6 are light emitting elements and light receiving elements (in this case, the number of light emitting elements and light receiving elements are both four), and 10 is an adjusting portion for adjusting the horizontal direction and the vertical tilt. Is.
【００１２】図３は図１の実施例１のブロック図であ
る。５は発光素子、６は受光素子、７は時間測定回路、
８は比較回路、９は表示部である。FIG. 3 is a block diagram of the first embodiment shown in FIG. 5 is a light emitting element, 6 is a light receiving element, 7 is a time measuring circuit,
Reference numeral 8 is a comparison circuit, and 9 is a display unit.
【００１３】次に上記実施例１の動作を図１を参照にし
ながら説明する。光軸調整モードにすると、それぞれの
発光素子が発光する。発射された光はスクリーンに反射
し対応する受光素子により受光される。発光素子が発光
した時間をｔ0 、受光素子が反射光を受光した時間をｔ
i（i=1,2,…,n、ただしnは受光素子数）として時間測定
回路でＴi＝ｔi−ｔ0を求める。求まったＴiを比較回路
で比較し、その結果をもとに調整のための情報を表示部
に表示する。この表示を見ながら利用者は手動によりプ
ロジェクションＴＶ本体の左右の向きおよび高さ方向の
あおりの調整を行う。また、移動調整部分を付加するこ
とにより、左右の向きを本体を動かすことなく移動させ
てもよい（左右のあおり機構）。Next, the operation of the first embodiment will be described with reference to FIG. In the optical axis adjustment mode, each light emitting element emits light. The emitted light is reflected by the screen and received by the corresponding light receiving element. The time when the light emitting element emits light is t 0 , and the time when the light receiving element receives the reflected light is t
, i (i = 1, 2, ..., N, where n is the number of light receiving elements), and T i = t i −t 0 is obtained by the time measuring circuit. The obtained T i is compared by the comparison circuit, and information for adjustment is displayed on the display unit based on the result. While looking at this display, the user manually adjusts the horizontal and vertical tilt of the projection TV body. Also, by adding a movement adjusting portion, the left and right directions may be moved without moving the main body (left and right tilt mechanism).
【００１４】実施例２．上記実施例１では発光素子が発
光してからその反射光が受光素子で受光されるまでの時
間を測定をし測定時間を比較することで光軸調整のため
の情報を表示していたが、本実施例では受光素子が受光
した反射光の強度を測定し、これを比較することによっ
て同様の情報を表示しようとするものである。Example 2. In the first embodiment, the time from when the light emitting element emits light to when the reflected light is received by the light receiving element is measured, and information for adjusting the optical axis is displayed by comparing the measurement times. In the present embodiment, the intensity of the reflected light received by the light receiving element is measured, and the intensity of the reflected light is compared to display similar information.
【００１５】図４は本実施例のブロック図である。光軸
調整モードにすると、それぞれの発光素子が発光する。
発射された光はスクリーンに反射し対応する受光素子に
より受光される。反射光強度測定回路で反射光の強度Ｉ
i（i=1,2,…,n、ただしnは受光素子数）を求める。この
求めたＩi を比較回路で比較し、その結果をもとに調整
のための情報を表示部に表示する。この表示を見ながら
利用者は手動により光軸の調整を行う。FIG. 4 is a block diagram of this embodiment. In the optical axis adjustment mode, each light emitting element emits light.
The emitted light is reflected by the screen and is received by the corresponding light receiving element. Reflected light intensity measurement circuit I
i (i = 1,2, ..., n, where n is the number of light receiving elements) is calculated. The obtained I i is compared by the comparison circuit, and the information for adjustment is displayed on the display unit based on the result. While watching this display, the user manually adjusts the optical axis.
【００１６】[0016]
【発明の効果】以上のように、この発明によれば、発光
素子ならびに３個以上の受光素子を用いることにより、
時間や反射光強度などの量が測定できこれを利用するこ
とで光軸調整する場合、利用者が参照できる情報を提供
することができ、光軸調整の簡易化を可能とする。As described above, according to the present invention, by using a light emitting element and three or more light receiving elements,
When the amount of time or reflected light intensity can be measured and the optical axis is adjusted by using the amount, information that can be referred to by the user can be provided, and the optical axis adjustment can be simplified.
【図１】この発明の一実施例による可搬形投写型プロジ
ェクションＴＶを示す全体構成図である。FIG. 1 is an overall configuration diagram showing a portable projection type projection TV according to an embodiment of the present invention.
【図２】図１の可搬形投写型プロジェクションＴＶの断
面図である。FIG. 2 is a cross-sectional view of the portable projection type projection TV shown in FIG.
【図３】図１の可搬形投写型プロジェクションＴＶの光
軸調整のブロック図である。3 is a block diagram of optical axis adjustment of the portable projection type projection TV shown in FIG. 1. FIG.
【図４】この発明の他の実施例である反射光強度測定手
段を用いた可搬形投射型プロジェクションＴＶの光軸調
整のブロック図である。FIG. 4 is a block diagram of optical axis adjustment of a portable projection type projection TV using reflected light intensity measuring means according to another embodiment of the present invention.
【図５】従来の可搬形投射型プロジェクションＴＶの全
体構成図である。FIG. 5 is an overall configuration diagram of a conventional portable projection type projection TV.
５ 発光素子 ６ 受光素子 ７ 時間測定回路 ８ 比較回路 ９ 表示部 １０ 調整部分 5 Light emitting element 6 Light receiving element 7 Time measuring circuit 8 Comparison circuit 9 Display section 10 Adjustment section
Claims (2)
するまでの時間を測定する時間測定手段と、時間測定手
段の３つ以上で測定された時間を比較する比較手段と、
この比較手段による比較結果より光軸調整のための情報
を与える表示手段とを備えたことを特徴とする可搬形投
写型プロジェクションＴＶ。1. A time measuring means for measuring the time from the light emitting element emitting light until the light receiving element receives light, and a comparing means for comparing the time measured by three or more of the time measuring means,
A portable projection type projection TV, comprising: display means for giving information for adjusting the optical axis based on the comparison result by the comparison means.
測定する反射光強度測定手段を有することを特徴とする
請求項第１項記載の可搬形投写型プロジェクションＴ
Ｖ。2. The portable projection type projection T according to claim 1, further comprising a reflected light intensity measuring means for measuring the intensity of the reflected light instead of the measuring means.
V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3206082A JPH0548994A (en) | 1991-08-19 | 1991-08-19 | Portable projection type projection tv |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3206082A JPH0548994A (en) | 1991-08-19 | 1991-08-19 | Portable projection type projection tv |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0548994A true JPH0548994A (en) | 1993-02-26 |
Family
ID=16517526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3206082A Pending JPH0548994A (en) | 1991-08-19 | 1991-08-19 | Portable projection type projection tv |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0548994A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6056408A (en) * | 1997-05-28 | 2000-05-02 | Canon Kabushiki Kaisha | Method and displaying projected image and projection-type image display apparatus |
| EP1650966A2 (en) * | 2004-10-22 | 2006-04-26 | Hewlett-Packard Development Company, L.P. | Projector alignment method and user interface |
| US7204596B2 (en) | 2003-09-19 | 2007-04-17 | Nec Corporation | Projector with tilt angle measuring device |
-
1991
- 1991-08-19 JP JP3206082A patent/JPH0548994A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6056408A (en) * | 1997-05-28 | 2000-05-02 | Canon Kabushiki Kaisha | Method and displaying projected image and projection-type image display apparatus |
| US7204596B2 (en) | 2003-09-19 | 2007-04-17 | Nec Corporation | Projector with tilt angle measuring device |
| EP1650966A2 (en) * | 2004-10-22 | 2006-04-26 | Hewlett-Packard Development Company, L.P. | Projector alignment method and user interface |
| EP1650966A3 (en) * | 2004-10-22 | 2008-07-23 | Hewlett-Packard Development Company, L.P. | Projector alignment method and user interface |
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