JPS6139304Y2 - - Google Patents
Info
- Publication number
- JPS6139304Y2 JPS6139304Y2 JP14237279U JP14237279U JPS6139304Y2 JP S6139304 Y2 JPS6139304 Y2 JP S6139304Y2 JP 14237279 U JP14237279 U JP 14237279U JP 14237279 U JP14237279 U JP 14237279U JP S6139304 Y2 JPS6139304 Y2 JP S6139304Y2
- Authority
- JP
- Japan
- Prior art keywords
- light source
- light
- receiving element
- cylindrical member
- light receiving
- 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
- 238000005259 measurement Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 2
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
【考案の詳細な説明】
本考案は、光量を測定する受光素子の保持装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a holding device for a light receiving element that measures the amount of light.
一般に電燈光源の光量測定には受光素子を光源
近傍に設置するが、その際光源（例えば螢光管）
の外形寸法のバラツキの為光源と受光素子との距
離が一定せず、正確な測定ができなかつた。また
時間経過につれて受光素子表面が汚れ受光感度が
低下し測定誤差の原因となる。 Generally, to measure the light intensity of an electric light source, a light receiving element is installed near the light source.
Due to variations in external dimensions, the distance between the light source and the light-receiving element was not constant, making accurate measurement impossible. Further, as time passes, the surface of the light receiving element becomes dirty, reducing the light receiving sensitivity and causing measurement errors.
本考案は、上記の欠点を除去することを目的と
するものである。 The present invention aims to eliminate the above-mentioned drawbacks.
以下図に示す実施例について説明する。１は光
源として管形電燈例えば螢光管、２は円筒を可と
する筒形部材で、その開口端面２ａは光源１の外
形にならうような形状になつている。３は筒形部
材２の内に於てその開口面２ａと反対側の底面に
位置する露光量測定の為の受光素子、４は受光素
子３を接続し筒形部材２を取付けたプリント基
板、５はプリント基板４を支持するバネ部材、６
は光源１のソケツト、７は光源１・ソケツト６の
支持部材、８はプリント基板４とバネ部材５の端
部の支持部材７に対する固定部で、片持支持にな
つており、バネ部材５の弾性により、筒形部材２
は支持部材７に対し相対変位可能である。 The embodiment shown in the drawings will be described below. Reference numeral 1 denotes a tube-shaped electric lamp, such as a fluorescent tube, as a light source, 2 denotes a cylindrical member, the open end face 2a of which is shaped to conform to the outline of the light source 1. 3 denotes a light receiving element for measuring the amount of exposure, which is located on the bottom face of the cylindrical member 2 on the opposite side to the open face 2a, 4 denotes a printed circuit board to which the light receiving element 3 is connected and to which the cylindrical member 2 is attached, 5 denotes a spring member supporting the printed circuit board 4, 6 denotes a light receiving element for measuring the amount of exposure, and 7 denotes a light receiving element for measuring the amount of exposure.
is a socket for the light source 1, 7 is a support member for the light source 1 and the socket 6, and 8 is a fixing portion of the end of the printed circuit board 4 and the spring member 5 to the support member 7, which is supported on one side.
is movable relative to the support member 7.
光源１をソケツト６に装着すると筒形部材２は
その開口端面２ａが光源１の外面に押されバネ部
材５に抗して第３図位置から第２図の位置まで図
上ｄだけ後退する。 When the light source 1 is attached to the socket 6, the open end surface 2a of the cylindrical member 2 is pushed by the outer surface of the light source 1, and the cylindrical member 2 is moved back from the position shown in FIG. 3 to the position shown in FIG. 2 by a distance d in the figure against the spring member 5.
従つて光源１の外形寸法に若干のバラツキがあ
つても、受光素子は光源に対し常に一定距離に置
かれる。又受光素子３は筒形部材２の底部に収容
され、開口端面２ａは光源外面に密着するから受
光素子３は外部雰囲気から隔離されその表面が汚
れて受光感度の低下を来たすことがない。従つて
常に正確な光量測定を行うことができる。 Therefore, even if there are slight variations in the external dimensions of the light source 1, the light receiving element is always placed at a constant distance from the light source. In addition, the light receiving element 3 is housed in the bottom of the cylindrical member 2, and the open end surface 2a is in close contact with the outer surface of the light source, so the light receiving element 3 is isolated from the external atmosphere, and its surface will not become dirty and reduce the light receiving sensitivity. Therefore, accurate light amount measurement can be performed at all times.
本案装置は、例えば複写機の光量測定装置等に
適用される。 The present device is applied, for example, to a light amount measuring device for a copying machine.
第１図は本案装置の使用状態正面図、第２図は
その−線横断面図、第３図は第２図状態で光
源を外した場合の図。
１は光源、２は筒形部材、３は受光素子、４は
プリント基板、５はバネ部材。
FIG. 1 is a front view of the device according to the present invention in use, FIG. 2 is a cross-sectional view taken along the line 2, and FIG. 3 is a view of the device shown in FIG. 2 with the light source removed. 1 is a light source, 2 is a cylindrical member, 3 is a light receiving element, 4 is a printed circuit board, and 5 is a spring member.
Claims (1)
うな開口端面の形状をもつた筒形部材にこの開口
端面から隔てて受光素子を収容し、該筒形部材を
該支持部材にバネ部材を介して相対変位可能に取
付け、該筒形部材を該バネ部材により光源に押し
付けて、該光源から該受光素子までの距離を一定
に保つことを特徴とする受光素子保持装置。 A light-receiving element is housed in a cylindrical member whose opening end surface has a shape that follows the outer shape of a light source attached to the support member, separated from the opening end surface, and the cylindrical member is connected to the support member via a spring member. A light-receiving element holding device characterized in that the cylindrical member is mounted so as to be relatively displaceable by the spring member, and the distance from the light source to the light-receiving element is kept constant by pressing the cylindrical member against the light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14237279U JPS6139304Y2 (en) | 1979-10-15 | 1979-10-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14237279U JPS6139304Y2 (en) | 1979-10-15 | 1979-10-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5659635U JPS5659635U (en) | 1981-05-21 |
| JPS6139304Y2 true JPS6139304Y2 (en) | 1986-11-11 |
Family
ID=29373654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14237279U Expired JPS6139304Y2 (en) | 1979-10-15 | 1979-10-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6139304Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014001950A (en) * | 2012-06-15 | 2014-01-09 | Photoscience Japan Corp | Ultraviolet relay |
-
1979
- 1979-10-15 JP JP14237279U patent/JPS6139304Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5659635U (en) | 1981-05-21 |
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