JPS5983141A - Illumination device - Google Patents
Illumination deviceInfo
- Publication number
- JPS5983141A JPS5983141A JP19435882A JP19435882A JPS5983141A JP S5983141 A JPS5983141 A JP S5983141A JP 19435882 A JP19435882 A JP 19435882A JP 19435882 A JP19435882 A JP 19435882A JP S5983141 A JPS5983141 A JP S5983141A
- Authority
- JP
- Japan
- Prior art keywords
- slit
- lamp
- light
- slit part
- glass tube
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/54—Lamp housings; Illuminating means
- G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、複写機をはじめとする事務機用のスリット照
明装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slit illumination device for office machines such as copying machines.
第１図は、従来のこの種の照明装置を示す斜視図で、第
１図をＡ方向から見た図を第２図に、同じくＢ方向から
見た図を第６図に示す。第１図〜第６図において、１は
照明しようとするスリット部、２はランプで、該ランプ
は所定の間隔でその発光部６Ｆが設けられたフィラメン
ト３と、該フィラメントを囲むガラス管４より構成され
ている。FIG. 1 is a perspective view showing a conventional illumination device of this type. FIG. 2 is a view of FIG. 1 viewed from direction A, and FIG. 6 is a view of FIG. 1 viewed from direction B. In Figs. 1 to 6, 1 is a slit portion to be illuminated, 2 is a lamp, and the lamp consists of a filament 3 with light emitting portions 6F provided at predetermined intervals, and a glass tube 4 surrounding the filament. It is configured.
５はランプ２で発光された光束を前記スリット部１に指
向せしめる反射笠である。反射笠５は第６図に示す様に
ランプ２を囲んで構成され、その反射面は一般に楕円面
に近似されて形成されている。Reference numeral 5 denotes a reflective shade that directs the luminous flux emitted by the lamp 2 toward the slit portion 1. The reflective shade 5 is constructed to surround the lamp 2 as shown in FIG. 6, and its reflective surface is generally formed to approximate an elliptical surface.
反射笠５の開口部６はスリット部１に向けて配されてお
り、ランプ２より反射される光束を有効にｔニ
スリット部１に集光させる為に、ランフ’、Ｊ？、前記
反射笠５の楕円面の２つの焦点の内の一方の焦点近傍に
配され、照明乞施こすスリット部１がもう一方の焦点近
傍に配されている。斯様な照明装置をコンパクトに構成
する為には、スリット部１とランプ２の距離を短くすれ
ば良いが、この場合には横列に成る間隔’＆１Ｍいて複
数個のフィラメント６Ｆを並べた線状のフィラメント６
では、スリット部１上で長手方向ａ−ｂに光量むら７生
ずる。第４図はこの様子を示す図で縦軸に明るさ、横軸
にスリット部の長平方向ａ−ｂが取られており、上述し
た様にスリット部１とランプ２を単に接近させた場合は
曲線Ｒ１に示″ｆ様に光量むらを生じる。The opening 6 of the reflective shade 5 is arranged to face the slit section 1, and in order to effectively condense the luminous flux reflected from the lamp 2 onto the slit section 1, the opening section 6 is arranged to face the slit section 1. , is arranged near one of the two focal points of the elliptical surface of the reflective shade 5, and the slit portion 1 for providing illumination is arranged near the other focal point. In order to construct such a lighting device compactly, the distance between the slit part 1 and the lamp 2 can be shortened, but in this case, a linear shape in which a plurality of filaments 6F are arranged in horizontal rows with an interval of '&1M is used. filament 6
In this case, unevenness 7 in the amount of light occurs on the slit portion 1 in the longitudinal direction a-b. Figure 4 shows this situation, with the vertical axis representing the brightness and the horizontal axis representing the longitudinal direction a-b of the slit section. Unevenness in the amount of light occurs as shown by "f" on the curve R1.
ランプ２とスリット部１との距離を遠ざければ。If the distance between the lamp 2 and the slit part 1 is increased.
フィラメントの発光部６Ｆによる影響は緩和され、第４
図に示す曲線ｉｔ ２の如く光計は一定になるが、光量
の絶対値が小さくなり又、ランプ２どスリット部の間隔
が大きくなるので装置のコンパクト化が計れない。The influence of the light emitting part 6F of the filament is alleviated, and the fourth
Although the light meter becomes constant as shown by curve it 2 shown in the figure, the absolute value of the light amount becomes small and the distance between the slit parts of the lamp 2 becomes large, making it impossible to make the device more compact.
本発明の目的は、コンパクト化を計っても照明すべきス
リット部の光量にむらを生じない様な照明装置を提供す
ることにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an illumination device that does not cause unevenness in the amount of light in a slit portion to be illuminated even if it is made compact.
本発明に係る照明装置においては、ランプのスリット部
側σ）管壁部では、少なくともフィラメントの発光部に
対向する部分で拡散透過が生じ、スリット部と反対側の
ランプの管壁部では完全反射が生じろ様にすることによ
り、上記目的を達成せんどするものである。以下、本発
明に関して詳述する。In the lighting device according to the present invention, diffuse transmission occurs at least in the part facing the light emitting part of the filament at the tube wall portion on the slit side σ) of the lamp, and complete reflection occurs in the tube wall portion of the lamp opposite to the slit portion. The purpose is to achieve the above objective by allowing the above to occur. The present invention will be explained in detail below.
第５図は、本発明に係る照明装置の実施例を示す図で、
反射笠は本発明の要点を分り易く説明する為に省略して
描かれているが、本発明に係る照明装置にも従来と同様
の二次曲面状の反射笠が使用されろ。第５図において、
１１は照明を受けろスリン１部、１２はランプで所定の
間隔で発光部１６Ｆと非発光部１３Ｅを有するフィラメ
ント１３とガラス管１４より成る。第６図は、第５図に
示すランプ１２の発光部１６Ｆ４含むＡ −Ａ’断面と
非発光部１３Ｅを含むＢ −Ｂ’断面の一例を示す図で
ある。Ａ −Ａ’断面及びＴ３− Ｂ’断面の前記スリ
ット部１１に対向するガラス管部１４ａには、ガラス管
の管壁に拡散透過処理が施こされている。又前記スリッ
ト部１１と反対側のガラス管部１４ｂには完全反射処理
が施こされている。この様に、ガラス管部１４Ｈに拡散
透過処理を施こすと、フィラメントの像が見かけ上大き
くなり、このことは見かげ上の発光部１３Ｆの長さが長
くなり、スリット部１１における長手方向ａ−ｂの光量
むらが減少する。又、ガラス管部１４ｂに完全反射処理
を施こすことは５発光部１６Ｆの鏡像がガラス管部１４
ｂの近傍に形成されろ。従って、この鏡面による発光部
の二次光源は充分に大きな光度な持った光源であり、こ
の二次光源からの光束は前記フィラメントの非発光部１
３ 、ｉＺの部分を通過しでスリット部１１に到達する
。こび〕作用によりスリット部１１の長手方向ａ−ｂの
光量むらが減少する。FIG. 5 is a diagram showing an embodiment of the lighting device according to the present invention,
Although the reflective shade is omitted in order to explain the main points of the present invention in an easy-to-understand manner, the same quadratic curved reflective shade as in the prior art may be used in the lighting device according to the present invention. In Figure 5,
Reference numeral 11 designates a lamp for receiving illumination, and reference numeral 12 designates a lamp consisting of a filament 13 and a glass tube 14, each having a light-emitting part 16F and a non-light-emitting part 13E at a predetermined interval. FIG. 6 is a diagram showing an example of an AA' cross section including the light emitting part 16F4 and a B-B' cross section including the non-light emitting part 13E of the lamp 12 shown in FIG. In the glass tube portion 14a facing the slit portion 11 in the A-A' cross section and the T3-B' cross section, a diffusion permeation treatment is applied to the tube wall of the glass tube. Further, the glass tube section 14b on the opposite side from the slit section 11 is subjected to complete reflection treatment. In this way, when the glass tube part 14H is subjected to the diffuse transmission treatment, the image of the filament becomes apparently larger, which means that the apparent length of the light emitting part 13F becomes longer, and the longitudinal direction a in the slit part 11 becomes larger. -b light intensity unevenness is reduced. Furthermore, by applying a complete reflection process to the glass tube section 14b, the mirror image of the 5 light emitting section 16F becomes the glass tube section 14.
Form near b. Therefore, the secondary light source of the light emitting part by this mirror surface is a light source with a sufficiently large luminous intensity, and the luminous flux from this secondary light source is transmitted to the non-light emitting part of the filament.
3, it passes through the iZ part and reaches the slit part 11. Due to this effect, the unevenness in the amount of light in the longitudinal direction a-b of the slit portion 11 is reduced.
第７図は、同じく第５図に示すランプ１２のＡ−Ａ’断
面と［３−Ｂ／断面における他の実施例を示すものであ
る。第７図に示すＡ −Ａ’断面は第６図のＡ、 −Ａ
’断面と同じであるが、１３− Ｂ／断面が異なる。FIG. 7 shows another embodiment of the lamp 12 taken along the AA' cross section and the [3-B/ cross section shown in FIG. 5]. The A-A' cross section shown in Figure 7 is A, -A in Figure 6.
'The cross section is the same, but the 13-B/cross section is different.
即ちＢ −１３’断面においては、スリット部１１ｖＣ
対向するガラス管部１４ａは透明ガラスのままであり、
スリット部１１と反対側のガラス管部１４ｂの管壁には
完全反射処理が施こされている。従って、第７図に示す
ランプは、ガラス管部１４ａの管壁の発光部１３Ｆに対
向する部分が拡散透過処理、非発光部１３Ｅに対向する
部分が透過面となっており、一方ガラス管部１４ｂの管
壁には完全反射処理が施こされている。第７図に示す構
成のランプ１２を用いても、スリット部１１の長手方向
ａ−ｂでの光量むらを補正することが可能である。That is, in the B-13' cross section, the slit portion 11vC
The opposing glass tube portion 14a remains transparent glass,
The tube wall of the glass tube section 14b on the opposite side to the slit section 11 is subjected to complete reflection treatment. Therefore, in the lamp shown in FIG. 7, the portion of the tube wall of the glass tube portion 14a facing the light-emitting portion 13F is treated with diffuse transmission, and the portion facing the non-light-emitting portion 13E is treated as a transmitting surface, while the glass tube portion The tube wall 14b is completely reflectively treated. Even if the lamp 12 having the configuration shown in FIG. 7 is used, it is possible to correct the unevenness in the amount of light in the longitudinal direction a-b of the slit portion 11.
第６図及び第７図に示す実施例では、ランプの管壁に直
接、拡散透過、完全反射の処理な施こしたが、この様な
処理を施こした部拐をガラス管部に貼り付けることによ
っても、同様の効果を得ろことが出来る。第８図はこの
一実施例を示す図で、第８図ＣＡ）はその内面１５ａに
完全反射の処理を施こした、半円筒部材をランプ１２の
ガラス管部１４ｂに貼り付ける様子を示した図で、第８
図（■３）は半円筒部材１５を接着したランプ１２を示
すものである。この様に、完全反射を施こした部材をラ
ンプの管壁部に密接して設けろことは、ランプ管壁に損
傷を与えることなく、且つ又、この部材が管壁部を保護
するので、振動等の外部の機械的１エカに対して、ラン
プの耐久性を増すもσ）である。In the embodiments shown in Figures 6 and 7, the diffuse transmission and complete reflection treatments were applied directly to the tube wall of the lamp, but it is also possible to attach a piece that has undergone such treatment to the glass tube. A similar effect can also be obtained by doing this. FIG. 8 is a diagram showing an example of this, and FIG. 8 CA) shows how a semi-cylindrical member whose inner surface 15a has been subjected to complete reflection treatment is attached to the glass tube portion 14b of the lamp 12. In the figure, the 8th
Figure (3) shows a lamp 12 to which a semi-cylindrical member 15 is glued. In this way, installing a completely reflective member in close contact with the lamp tube wall prevents damage to the lamp tube wall, and also protects the tube wall from vibrations. It increases the durability of the lamp for an external mechanical power of σ).
以上述べた様に、本発明に係る照明装置４においては、
ランプと照明光を受けるスリット部との距離を短くして
、コンパクト化及び照明光址の増加を計っても、スリッ
ト部での照明光量のむらな防止することが出来るもので
ある。As described above, in the lighting device 4 according to the present invention,
Even if the distance between the lamp and the slit portion that receives illumination light is shortened to achieve compactness and increase the area of illumination light, unevenness in the amount of illumination light at the slit portion can be prevented.
第１図、第２図、第６図及び第４図は従来のスリット照
明装置ｍｆ Ｙ 説明する為の図、第５図は本発明に係
る照明装置の概略を示す図、第６図及び第７図は各々、
本発明に係る照明装置のランプの断面を示す図、第８図
（Ａ＋ （Ｂｌは本発明の照明装置６０ランプの一実施
例を示す斜視図。
１１・・・・スリット部、１２１・・ラング、１３・・
・・フィラメント、１６Ｆ・・・・発光部、１３ ■ｖ
・・・・非発光部、１４・・・・ガラス管、１４ａ、１
４．ｂ・・・争ガラス管音り出願人 キャノン株式会社1, 2, 6 and 4 are diagrams for explaining the conventional slit illumination device mf Y, FIG. 5 is a diagram schematically showing the illumination device according to the present invention, and FIGS. Each of the 7 figures is
FIG. 8 (A+ (Bl is a perspective view showing one embodiment of the lamp of the lighting device 60 of the invention. 11...Slit portion, 121...Rung) , 13...
...Filament, 16F...Light emitting part, 13 ■v
...Non-light emitting part, 14...Glass tube, 14a, 1
4. b...Glass tube sound applicant Canon Co., Ltd.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19435882A JPS5983141A (en) | 1982-11-04 | 1982-11-04 | Illumination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19435882A JPS5983141A (en) | 1982-11-04 | 1982-11-04 | Illumination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5983141A true JPS5983141A (en) | 1984-05-14 |
Family
ID=16323245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19435882A Pending JPS5983141A (en) | 1982-11-04 | 1982-11-04 | Illumination device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5983141A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5395023A (en) * | 1977-01-31 | 1978-08-19 | Fuji Xerox Co Ltd | Copying machine llght system |
| JPS54145523A (en) * | 1978-04-28 | 1979-11-13 | Westinghouse Electric Corp | Light source |
-
1982
- 1982-11-04 JP JP19435882A patent/JPS5983141A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5395023A (en) * | 1977-01-31 | 1978-08-19 | Fuji Xerox Co Ltd | Copying machine llght system |
| JPS54145523A (en) * | 1978-04-28 | 1979-11-13 | Westinghouse Electric Corp | Light source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3817665B2 (en) | lighting equipment | |
| JPS62142465A (en) | Light source unit | |
| JP2012522349A (en) | LED collimating optical module and lighting apparatus using the module | |
| WO2009040725A2 (en) | Laser-pumped lamp using a light guide with a pinhole in its entrance mirror | |
| EP0071230A1 (en) | Lighting apparatus | |
| JP6129602B2 (en) | Document reading light source device | |
| JP6919860B2 (en) | Lamps for wall irradiation and lighting equipment using them | |
| JP2003317518A (en) | Lighting device | |
| JP6344961B2 (en) | Semiconductor light emitting device | |
| JPS5983141A (en) | Illumination device | |
| JP6227904B2 (en) | LED light source device | |
| KR100422258B1 (en) | A Lighting Device | |
| JPS5983140A (en) | Illumination device | |
| JPS5983142A (en) | Illumination device | |
| JPS5931201Y2 (en) | Illumination device in endoscope | |
| KR100417397B1 (en) | Illumination device for lcd | |
| KR200259622Y1 (en) | A Lighting Device | |
| JP2023072710A (en) | Vehicular lighting fixture | |
| JPH0119131Y2 (en) | ||
| KR100992893B1 (en) | Asymmetric indirect lighting collimators | |
| JPH05300320A (en) | Line shaped light source equipment | |
| JPH0731255Y2 (en) | Optical static eliminator | |
| JPS6022347Y2 (en) | Lighting equipment for copying machines, etc. | |
| JPS5848829Y2 (en) | slit lighting device | |
| KR100246226B1 (en) | Lighting optical system of lcd projector |