JPH04294338A - Projector - Google Patents
ProjectorInfo
- Publication number
- JPH04294338A JPH04294338A JP5989591A JP5989591A JPH04294338A JP H04294338 A JPH04294338 A JP H04294338A JP 5989591 A JP5989591 A JP 5989591A JP 5989591 A JP5989591 A JP 5989591A JP H04294338 A JPH04294338 A JP H04294338A
- Authority
- JP
- Japan
- Prior art keywords
- color temperature
- light
- projector
- operator
- correlated color
- 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
- 230000002596 correlated effect Effects 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000001678 irradiating effect Effects 0.000 abstract 2
- 230000004313 glare Effects 0.000 description 24
- 238000005286 illumination Methods 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000004456 color vision Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000004382 visual function Effects 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は、主照射方向に対して高
輝度を得、操作者が投影器の発光面を直接見た場合に操
作者が受けるまぶしさの程度を低減させた投影器に関す
る。[Industrial Application Field] The present invention is a projector that obtains high brightness in the main irradiation direction and reduces the degree of glare that an operator receives when the operator looks directly at the light emitting surface of the projector. Regarding.
【0002】0002
【従来の技術】情報化社会にともなって投影器を用いた
講演会や説明会が行なわれている。しかし、投影器には
高輝度の光源が使用されているため、操作者は投影器の
発光面に投影器用の用紙を置いたりその用紙を見たりし
ながら講演するときに非常にまぶしく、用紙に描かれて
いる文字や図面が見辛いものであった。このようなこと
から、操作者が不快に感じることなく快く講演できるよ
う、投影器から操作者が受けるまぶしさの程度を低減し
、かつ主照射方向に対して高照度を得る投影器の要求が
高まっている。2. Description of the Related Art With the advent of information society, lectures and briefing sessions using projectors are being held. However, since the projector uses a high-intensity light source, when the operator gives a lecture while placing or looking at the paper for the projector on the light-emitting surface of the projector, the paper is very bright. The written text and drawings were difficult to read. For this reason, there is a need for a projector that reduces the degree of glare that the operator receives from the projector and that provides high illuminance in the main irradiation direction so that the operator can comfortably give lectures without feeling uncomfortable. It's increasing.
【0003】0003
【発明が解決しようとする課題】従来のこの種の投影器
では、操作者が投影器の発光面に投影器用の用紙を置い
たり、その用紙を見たりしながら講演するときに操作者
が受けるまぶしさを抑制する配慮はされていなかった。[Problems to be Solved by the Invention] With conventional projectors of this type, when the operator places paper for the projector on the light emitting surface of the projector or looks at the paper while giving a lecture, the operator receives No consideration was given to suppressing glare.
【0004】本発明は上記課題を解決するもので、主投
射方向に対して大きな輝度を得ることができるとともに
、操作者が直接投影器の発光面を見たときのまぶしさの
程度を低減することができる投影器を提供することを目
的としている。[0004] The present invention solves the above problems, and makes it possible to obtain high brightness in the main projection direction, and to reduce the degree of glare when the operator directly looks at the light emitting surface of the projector. The purpose is to provide a projector that can.
【0005】[0005]
【課題を解決するための手段】本発明は、上記目的を達
成するために、相関色温度2800K以上の光源を有す
る投影器本体と、前記光源の発する光を2800K内外
の相関色温度に変換する色温度変換フィルタを前記投影
器の発光面と操作者との間に配設し、主照射方向以外の
光の相関色温度を2800K内外に変換する構成とした
ものである。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a projector body having a light source with a correlated color temperature of 2800K or more, and converting the light emitted by the light source into a correlated color temperature of around 2800K. A color temperature conversion filter is disposed between the light emitting surface of the projector and the operator, and is configured to convert the correlated color temperature of light in directions other than the main irradiation direction to within or outside 2800K.
【0006】[0006]
【作用】本発明は上記した構成により、投影器から放射
される主照射方向、すなわちスクリーン面などに対して
は高い色温度で充分な照度を与え、操作者が投影器の発
光面の方を見たときに操作者の方向に照射される光から
操作者が受けるまぶしさの程度を低減することができる
。[Operation] With the above-described configuration, the present invention provides sufficient illuminance with high color temperature to the main irradiation direction emitted from the projector, that is, to the screen surface, etc., so that the operator can direct the light emitting surface of the projector. It is possible to reduce the degree of glare that the operator receives from the light irradiated in the direction of the operator when viewed.
【0007】[0007]
【実施例】以下、本発明の一実施例について図1から図
3を参照にしながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
【0008】加齢が進むにつれて、特に短波長域の光に
対して眼の中での散乱が大きくなることが知られている
(たとえば、Vos,J.J.,CIE journ
al,Vol.3 No.2(1984)P39)。[0008] It is known that as aging progresses, light scattering in the eye increases, especially for light in the short wavelength range (for example, Vos, J. J., CIE journal
al, Vol. 3 No. 2 (1984) P39).
【0009】この散乱が大きいほど光に対してまぶしさ
を感じやすいことから、光源の相関色温度とまぶしさと
の間には密接な関係があるということができる。[0009] The greater the scattering, the more likely one is to feel glare from light, so it can be said that there is a close relationship between the correlated color temperature of the light source and glare.
【0010】相関色温度が低い照明光は人間にとってま
ぶしさの程度が相関色温度の高い照明光よりも低くなる
。この低色温度の代表光としては白熱電球であり、その
相関色温度は2800Kである。この光色は人間にやす
らぎと豊かさを与える目に優しい光として昔から親しま
れている光色であり、操作者の視角内に取り入れる光色
としては非常に適している。一方、相関色温度が280
0K未満の相関色温度はオレンジ色が強すぎるため、夕
焼け時の光色や低圧ナトリウムランプのようなトンネル
照明とよく似た照明の光色になり、色識別能力など視機
能の低下につながるので投影器用の照明には適さないも
のである。Illumination light with a low correlated color temperature causes less glare to humans than illumination light with a high correlated color temperature. An incandescent light bulb is a representative light with a low color temperature, and its correlated color temperature is 2800K. This light color has been popular for a long time as a light that is gentle on the eyes and gives peace and richness to humans, and is very suitable as a light color that can be brought into the visual angle of the operator. On the other hand, the correlated color temperature is 280
Correlated color temperatures below 0K are too orange, resulting in light colors similar to those seen at sunset or tunnel lighting such as low-pressure sodium lamps, which can lead to a decline in visual functions such as color discrimination ability. It is not suitable for illumination for projectors.
【0011】そこで、光源の相関色温度とまぶしさとの
関係について実験的に求めた。実験では、心理学的手法
により両眼隔壁法を用いて、基準光と6種類の相関色温
度を有するテスト光とのまぶしさ合わせを行なった。被
験者は色覚正常の22歳〜61歳の男子5名および女子
3名である。[0011] Therefore, the relationship between the correlated color temperature of the light source and glare was experimentally determined. In the experiment, the binocular septum method was used as a psychological method to match the glare between the reference light and the test light having six different correlated color temperatures. The subjects were 5 males and 3 females aged 22 to 61 with normal color vision.
【0012】図2に実験により得られた光源の相関色温
度とまぶしさの程度との関係を示す。図2において、横
軸は光源の相関色温度であり、縦軸はまぶしさの程度の
相対値である。FIG. 2 shows the relationship between the correlated color temperature of the light source and the degree of glare obtained through experiments. In FIG. 2, the horizontal axis is the correlated color temperature of the light source, and the vertical axis is the relative value of the degree of glare.
【0013】まぶしさの程度は白熱電球と同等の相関色
温度 2800 Kを有する照明光源のまぶしさを1.
0とし、値が大きくなるほどまぶしさは少なくなり、値
が小さくなるほどまぶしさは大きくなる。[0013] The degree of glare is as follows: 1. The degree of glare is 1.
0, the larger the value, the less glare, and the smaller the value, the more glare.
【0014】図2から、照明光源の相関色温度が低くな
るほど、まぶしさを感じにくくなるという関係を確認す
ることができた。From FIG. 2, it was confirmed that the lower the correlated color temperature of the illumination light source, the less likely one would feel glare.
【0015】また、図2から、主照射方向の輝度が高く
、操作者に与えるまぶしさを低減させた投影器を製作す
るには、投影器の発光面と操作者との間にフィルタ等を
配設し、フィルタの分光透過率を選択して操作者の眼に
入射される光の相関色温度が低色温度の標準の光である
白熱電球の2800Kになるようにすれば良いことがわ
かる。Furthermore, from FIG. 2, in order to manufacture a projector that has high brightness in the main irradiation direction and reduces glare given to the operator, it is necessary to install a filter or the like between the light emitting surface of the projector and the operator. It can be seen that all you need to do is to select the spectral transmittance of the filter so that the correlated color temperature of the light that enters the operator's eyes is 2800K of an incandescent light bulb, which is standard light with a low color temperature. .
【0016】このように、投影器の発光面と操作者との
間にフィルタを配設することにより主照射面の照度を低
減させず、操作者が感じるまぶしさを低減させることが
できる。As described above, by disposing the filter between the light emitting surface of the projector and the operator, it is possible to reduce the glare felt by the operator without reducing the illuminance of the main irradiation surface.
【0017】以下、本発明の実施例の投影器の構成につ
いて図1を参照しながら説明する。図1に示すように、
1は投影器本体、2は投影器本体1の発光面3上に載置
された投影器用の用紙、4は発光面3と操作者の間に配
設された色温度変換フィルタ、5は操作者、6は光源か
ら発せられる主照射方向の光をスクリーンへ投射するミ
ラーである。The configuration of a projector according to an embodiment of the present invention will be explained below with reference to FIG. As shown in Figure 1,
1 is a projector main body, 2 is a sheet of paper for the projector placed on the light emitting surface 3 of the projector main body 1, 4 is a color temperature conversion filter disposed between the light emitting surface 3 and the operator, and 5 is an operation 6 is a mirror that projects the light emitted from the light source in the main irradiation direction onto the screen.
【0018】色温度変換フィルタ4は、例えば投影器本
体1の光源に相関色温度5300Kであるキセノンラン
プを使用している場合、キセノンランプから照射されて
色温度変換フィルタ4を透過した光の相関色温度が28
00Kになるような分光透過率(図3参照)を有してい
る。For example, when a xenon lamp with a correlated color temperature of 5300K is used as the light source of the projector body 1, the color temperature conversion filter 4 changes the correlation of the light emitted from the xenon lamp and transmitted through the color temperature conversion filter 4. Color temperature is 28
It has a spectral transmittance of 00K (see FIG. 3).
【0019】上記構成において、投影器本体1の光源を
点灯すると、光源から発せられた主照射方向の光はミラ
ー6によりスクリーンへ投射される。一方、操作者5に
は色温度変換フィルタ4で分光透過され相関色温度が2
800K内外に変換された光が到達する。この変換され
た光はほぼ電球色領域の相関色温度であるため、用紙2
を載置するときや、用紙2を見ながら説明するときに生
じるまぶしさを低減し、また、用紙2に描かれている文
字や絵柄の見辛さを大幅に低減することができる。In the above configuration, when the light source of the projector main body 1 is turned on, the light emitted from the light source in the main irradiation direction is projected onto the screen by the mirror 6. On the other hand, for the operator 5, the color temperature conversion filter 4 transmits the spectrum and the correlated color temperature is 2.
Light converted to 800K or outside reaches the target. Since this converted light has a correlated color temperature approximately in the light bulb color range, paper 2
It is possible to reduce the glare that occurs when placing the paper 2 or giving an explanation while looking at the paper 2, and it is also possible to significantly reduce the difficulty in seeing the characters and patterns drawn on the paper 2.
【0020】ここで、相関色温度2800K内外の定義
であるが、2800K以下になると上記したようにオレ
ンジ色の強い光色となって操作者への入射光には適さな
くなり、また、図2からわかるようにあまり高い色温度
になるとまぶしさが大きくなる。従って2700Kから
JISで定められた電球色領域の上限であって、かつ図
2に示したまぶしさが10%程度低下する3150Kを
その範囲とする。[0020] Here, the correlated color temperature is defined as 2800K or less, but if it is below 2800K, the light color becomes strong orange as described above, making it unsuitable for the light incident on the operator. As you can see, when the color temperature is too high, the glare increases. Therefore, the range is set from 2700K to 3150K, which is the upper limit of the light bulb color range defined by JIS and at which the glare shown in FIG. 2 is reduced by about 10%.
【0021】[0021]
【発明の効果】以上の実施例の説明から明らかなように
、本発明によれば、光源の発する光を2800K内外の
相関色温度に変換する色温度変換フィルタを投影器の発
光面と操作器の間に配設し、主照射方向以外の光の相関
色温度を2800K内外に変換したことにより、主照射
方向に対しては高輝度が得られ、操作者方向に対しては
相関色温度が2800K内外の眼に優しい光を与えられ
るので、視認性がよく、かつまぶしさを低減させた投影
器を提供することができる。As is clear from the description of the embodiments above, according to the present invention, a color temperature conversion filter for converting light emitted from a light source into a correlated color temperature of around 2800K is provided between the light emitting surface of the projector and the operating device. By converting the correlated color temperature of light in the direction other than the main irradiation direction to around 2800K, high brightness is obtained in the main irradiation direction, and the correlated color temperature in the direction of the operator is Since eye-friendly light of around 2800K can be provided, a projector with good visibility and reduced glare can be provided.
【図1】本発明の一実施例の投影器の外観斜視図FIG. 1: External perspective view of a projector according to an embodiment of the present invention.
【図2
】光源の相関色温度とまぶしさの程度との関係を示すグ
ラフ[Figure 2
] Graph showing the relationship between the correlated color temperature of the light source and the degree of glare
【図3】色温度変換フィルタの相対分光透過率特性図[Figure 3] Relative spectral transmittance characteristic diagram of color temperature conversion filter
1 投影器本体 3 発光面 4 色温度変換フィルタ 5 操作者 1 Projector body 3. Light emitting surface 4 Color temperature conversion filter 5 Operator
Claims (1)
投影器本体と、前記光源の発する光を2800K内外の
相関色温度に変換する色温度変換フィルタを前記投影器
の発光面と操作者との間に配設し、主照射方向以外の光
の相関色温度を2800K内外に変換してなる投影器。1. A projector main body having a light source with a correlated color temperature of 2800K or more, and a color temperature conversion filter for converting the light emitted from the light source into a correlated color temperature of around 2800K, which is connected between the light emitting surface of the projector and an operator. A projector placed between the projectors that converts the correlated color temperature of light in directions other than the main irradiation direction to around 2800K.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5989591A JPH04294338A (en) | 1991-03-25 | 1991-03-25 | Projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5989591A JPH04294338A (en) | 1991-03-25 | 1991-03-25 | Projector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04294338A true JPH04294338A (en) | 1992-10-19 |
Family
ID=13126310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5989591A Pending JPH04294338A (en) | 1991-03-25 | 1991-03-25 | Projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04294338A (en) |
-
1991
- 1991-03-25 JP JP5989591A patent/JPH04294338A/en active Pending
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