KR970022484A - Light control for overhead projects - Google Patents
Light control for overhead projects Download PDFInfo
- Publication number
- KR970022484A KR970022484A KR1019950035784A KR19950035784A KR970022484A KR 970022484 A KR970022484 A KR 970022484A KR 1019950035784 A KR1019950035784 A KR 1019950035784A KR 19950035784 A KR19950035784 A KR 19950035784A KR 970022484 A KR970022484 A KR 970022484A
- Authority
- KR
- South Korea
- Prior art keywords
- amount
- light
- overhead project
- overhead
- adjusting
- Prior art date
Links
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
본 발명은 오버 헤드 프로젝트(Over Head Project)에 관한 것으로, 상세히는 오버 헤드 프로젝트의 주변의 밝기를 검출하고 이에 대응되게 오버 헤드 프로젝트에서 분사되는 광량을 조절할 수 있도록 하는 오버 헤드 프로젝트의 광량 조절장치에 관한 것으로, 종래에는 주변 밝기에 관계없이 언제나 오버 헤드 프로젝트로부터 일정한 광량의 빛이 조사되었었다. 본 발명은 오버 헤드 프로젝트의 주변 밝기를 검출하기 위한 광량 검출용 센서를 구성하고, 프리 앰프를 통해 증폭된 검출신호를 판독하고 검출신호에 비례하게 전구로부터 출력되는 광량을 조절하기 위한 마이크로 프로세서를 구성하며, 상기 마이크로 프로세서의 제어하에 스위칭 동작하여 전구에 공급되는 전류량을 조절하는 전류 제한용 저항을 구성하여 주변 밝기에 광량을 자동 조절할 수 있는 효과를 가진다.The present invention relates to an overhead project, and more particularly, to an apparatus for adjusting an amount of light of an overhead project that detects brightness of an overhead project and adjusts the amount of light emitted from the overhead project accordingly. In the related art, light of a constant amount of light has always been irradiated from an overhead project regardless of ambient brightness. The present invention comprises a sensor for detecting the amount of light for detecting the ambient brightness of the overhead project, and a microprocessor for reading the detected signal amplified through the preamplifier and adjusting the amount of light output from the bulb in proportion to the detected signal. In addition, the switching operation under the control of the microprocessor to configure the current limiting resistor to adjust the amount of current supplied to the bulb has the effect of automatically adjusting the amount of light to the ambient brightness.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도는 본 발명에 따른 사시도,1 is a perspective view according to the present invention,
제2도는 본 발명을 실현하기 위한 회로도.2 is a circuit diagram for realizing the present invention.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950035784A KR970022484A (en) | 1995-10-17 | 1995-10-17 | Light control for overhead projects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950035784A KR970022484A (en) | 1995-10-17 | 1995-10-17 | Light control for overhead projects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR970022484A true KR970022484A (en) | 1997-05-28 |
Family
ID=66582604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950035784A KR970022484A (en) | 1995-10-17 | 1995-10-17 | Light control for overhead projects |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970022484A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH043043A (en) * | 1990-04-19 | 1992-01-08 | Ricoh Co Ltd | Overhead projector |
| JPH04152331A (en) * | 1990-10-16 | 1992-05-26 | Brother Ind Ltd | Projector |
| KR0147214B1 (en) * | 1994-09-23 | 1998-09-15 | 이헌조 | Light quantity control apparatus of projector |
-
1995
- 1995-10-17 KR KR1019950035784A patent/KR970022484A/en not_active Application Discontinuation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH043043A (en) * | 1990-04-19 | 1992-01-08 | Ricoh Co Ltd | Overhead projector |
| JPH04152331A (en) * | 1990-10-16 | 1992-05-26 | Brother Ind Ltd | Projector |
| KR0147214B1 (en) * | 1994-09-23 | 1998-09-15 | 이헌조 | Light quantity control apparatus of projector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| N231 | Notification of change of applicant | ||
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |