JPS6213058Y2 - - Google Patents
Info
- Publication number
- JPS6213058Y2 JPS6213058Y2 JP1978107066U JP10706678U JPS6213058Y2 JP S6213058 Y2 JPS6213058 Y2 JP S6213058Y2 JP 1978107066 U JP1978107066 U JP 1978107066U JP 10706678 U JP10706678 U JP 10706678U JP S6213058 Y2 JPS6213058 Y2 JP S6213058Y2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- contrast
- data imprinting
- filter
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 4
- 230000005669 field effect Effects 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 13
- 230000003595 spectral effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Camera Data Copying Or Recording (AREA)
Description
【考案の詳細な説明】
本考案は、白色光源とフイルム面との間に透過
式の電界効果型ネマテイツク液晶表示器（以下液
晶デイスプレイという。）を配設し、この表示器
をデータ源としたカメラのデータ写込装置に関す
る。[Detailed description of the invention] The invention uses a transmission type field-effect nematic liquid crystal display (hereinafter referred to as a liquid crystal display) between a white light source and a film surface, and uses this display as a data source. The present invention relates to a camera data imprinting device.
この液晶デイスプレイはコントラストが低いた
めにフイルムに写込まれたデータが見にくいとい
う欠点がある。 This liquid crystal display has the disadvantage that it is difficult to see the data captured on the film due to its low contrast.
本考案の目的は、液晶デイスプレイの分光透過
特性を調べて、コントラストの低い波長を白色光
からろ波することによつて上記欠点を解決したデ
ータ写込装置を提供するにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a data imprinting device that solves the above-mentioned drawbacks by examining the spectral transmission characteristics of a liquid crystal display and filtering out wavelengths with low contrast from white light.
以下、本考案の好適な１実施例を図面に即して
説明する。 Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
第１図は、本考案のデータ写込装置の要部構成
図である。白色光源Ｌからの光は後述のシヤープ
カツトフイルタ１を通つて所定波長以下の可視光
を吸収され、液晶デイスプレイ２を照明する。液
晶デイスプレイ２を透過した光は、フイルム圧板
３の開口３ａを通つてフイルム面上に位置するフ
イルム４の所定の位置に至る。以上の構成でデー
タ写込みが可能となる。裏蓋５は上記構成のデー
タ写込装置を収納する。 FIG. 1 is a block diagram of the main parts of the data imprinting device of the present invention. The light from the white light source L passes through a sharp cut filter 1, which will be described later, and absorbs visible light of a predetermined wavelength or less, thereby illuminating the liquid crystal display 2. The light transmitted through the liquid crystal display 2 passes through the opening 3a of the film pressure plate 3 and reaches a predetermined position on the film 4 located on the film surface. Data imprinting is possible with the above configuration. The back cover 5 accommodates the data imprinting device configured as described above.
さて、第２図は液晶デイスプレイとして電界効
果型−ツウイステツドネマテイツク液晶を使用し
たときの、分光透過特性の一例を示す。第３図は
第１図より得られるデイスプレイのコントラスト
を示す。第２図および第３図から、波長530nm付
近を境として、400〜500nmでコントラストが低
く、540〜700nmでコントラストが高いことが明
らかである。そして、そのコントラスト比も530
〜700nmでは大である。 Now, FIG. 2 shows an example of spectral transmission characteristics when a field effect type twisted nematic liquid crystal is used as a liquid crystal display. FIG. 3 shows the contrast of the display obtained from FIG. From FIG. 2 and FIG. 3, it is clear that the contrast is low in the wavelength range of 400 to 500 nm, and the contrast is high in the wavelength range of 540 to 700 nm, with the wavelength around 530 nm as the boundary. And its contrast ratio is also 530
It is large at ~700nm.
従つて、この例ではシヤープカツトフイルタ１
の透過吸収の臨界波長は略530nm以上の波長から
適宜選択すればよいことになる（第４図にその一
例が示してある。）。波長が長くなつてくると、デ
ータ写込用に使える光量は減少してくるが、その
分だけ光源Ｌの強度を強くしておけばよい。ここ
で重要なことは、フイルタは可視光の所定の波長
より短波長側をカツトする特性を持つていること
であり、この所定の臨界波長はコントラストのみ
ならず他の諸条件を考慮して決定されなければな
らない。 Therefore, in this example, sharp cut filter 1
The critical wavelength for transmission and absorption may be appropriately selected from wavelengths of about 530 nm or more (an example is shown in FIG. 4). As the wavelength becomes longer, the amount of light that can be used for data imprinting decreases, but it is sufficient to increase the intensity of the light source L by that amount. What is important here is that the filter has the property of cutting visible light at shorter wavelengths than a predetermined wavelength, and this predetermined critical wavelength is determined not only by contrast but also by taking into account other conditions. It must be.
次に、シヤープカツトフイルタ１の効果につい
て、実写テストを行つたところ、白黒フイルム、
カラーフイルム（ネガポジ）共に良好な結果が得
られた。因みに、白黒フイルムの場合、シヤープ
カツトフイルタの臨界波長を500〜560nm範囲で
選択したときフイルタ無しのときと比較すると濃
度差で３〜4EV程度のコントラストの向上が得ら
れた。また、カラーフイルムでは濃度差で１〜
3EV程度のコントラストの向上がみられた。 Next, we conducted a live-action test to test the effectiveness of Sharp Cut Filter 1, and found that
Good results were obtained with both color films (negative and positive). Incidentally, in the case of a black and white film, when the critical wavelength of the sharp cut filter was selected in the range of 500 to 560 nm, an improvement in contrast of about 3 to 4 EV was obtained due to the difference in density compared to when no filter was used. Also, with color film, the difference in density is 1~
An improvement in contrast of about 3EV was observed.
尚、シヤープカツトフイルタ１に代つて、第５
図に示す液晶デイスプレイの構成要素のうち、偏
光板２０，２１あるいは液晶物質２２を封入する
ためのガラス板２３，２４をシヤープカツトフイ
ルタの特性を有するよう着色する等のことが考え
られる。また液晶物質２２をこのフイルタ特性を
有するように着色することも考えられる。２５は
透明電極、２６はスペーサである。 Incidentally, instead of sharp cut filter 1, a fifth filter is used.
Among the components of the liquid crystal display shown in the figure, it is conceivable to color the polarizing plates 20, 21 or the glass plates 23, 24 for enclosing the liquid crystal substance 22 so as to have the characteristics of a sharp cut filter. It is also conceivable to color the liquid crystal material 22 so that it has this filter characteristic. 25 is a transparent electrode, and 26 is a spacer.
以上のような本考案によれば、液晶デイスプレ
イの表示をコントラスト良くフイルムに写込むこ
とができる。 According to the present invention as described above, it is possible to image the display on the liquid crystal display onto a film with good contrast.
第１図は本考案の１実施例の要部構成図、第２
図は液晶デイスプレイとして電界効果型−ツウイ
ステツドネマテイツク液晶を使用した場合の分光
透過特性を示す図、第３図は第１図の装置より得
られるデイスプレイのコントラスト特性を示す
図、第４図はフイルタの一例の分光透過率特性を
示す図、第５図は液晶デイスプレイの一例の概略
的断面図である。
主要部分の符号の説明、Ｌ……白色光源、１…
…シヤープカツトフイルタ、２……液晶デイスプ
レイ、４……フイルム。
Fig. 1 is a main part configuration diagram of one embodiment of the present invention, Fig. 2
The figure shows the spectral transmission characteristics when a field-effect-twisted nematic liquid crystal is used as a liquid crystal display, Figure 3 shows the contrast characteristics of the display obtained from the device shown in Figure 1, and Figure 4 5 is a diagram showing spectral transmittance characteristics of an example of a filter, and FIG. 5 is a schematic cross-sectional view of an example of a liquid crystal display. Explanation of symbols of main parts, L...White light source, 1...
...Sharp cut filter, 2...Liquid crystal display, 4...Film.
Claims (1)
効果型ネマテイツク液晶表示器を配設したカメラ
のデータ写込装置において、 該光源とフイルム面との間に、可視光の所定の
波長より短波長側の光を吸収するフイルタを配設
したことを特徴とするデータ写込装置。[Scope of Claim for Utility Model Registration] In a camera data imprinting device in which a transmission type field effect nematic liquid crystal display is disposed between a white light source and the film surface, between the light source and the film surface, A data imprinting device characterized in that a filter is provided that absorbs light having wavelengths shorter than a predetermined wavelength of visible light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978107066U JPS6213058Y2 (en) | 1978-08-05 | 1978-08-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978107066U JPS6213058Y2 (en) | 1978-08-05 | 1978-08-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5526507U JPS5526507U (en) | 1980-02-20 |
| JPS6213058Y2 true JPS6213058Y2 (en) | 1987-04-04 |
Family
ID=29050827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978107066U Expired JPS6213058Y2 (en) | 1978-08-05 | 1978-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6213058Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172640A (en) * | 1982-04-01 | 1983-10-11 | Canon Inc | Data imprinter |
| JPS58166634U (en) * | 1982-04-30 | 1983-11-07 | 京セラ株式会社 | Data imprint device using liquid crystal |
| JP2691530B2 (en) * | 1987-03-04 | 1997-12-17 | セイコーエプソン株式会社 | Projection color display |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5062472A (en) * | 1973-10-03 | 1975-05-28 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50132074U (en) * | 1974-04-16 | 1975-10-30 | ||
| JPS51116749U (en) * | 1975-03-18 | 1976-09-21 | ||
| JPS5754098Y2 (en) * | 1976-12-23 | 1982-11-24 |
-
1978
- 1978-08-05 JP JP1978107066U patent/JPS6213058Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5062472A (en) * | 1973-10-03 | 1975-05-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5526507U (en) | 1980-02-20 |
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