JPS62201738U - - Google Patents
Info
- Publication number
- JPS62201738U JPS62201738U JP9028686U JP9028686U JPS62201738U JP S62201738 U JPS62201738 U JP S62201738U JP 9028686 U JP9028686 U JP 9028686U JP 9028686 U JP9028686 U JP 9028686U JP S62201738 U JPS62201738 U JP S62201738U
- Authority
- JP
- Japan
- Prior art keywords
- screen
- optical system
- detection sensor
- projector device
- overhead projector
- 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
- 238000001514 detection method Methods 0.000 claims 4
- 230000003287 optical effect Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Focusing (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9028686U JPS62201738U (zh) | 1986-06-13 | 1986-06-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9028686U JPS62201738U (zh) | 1986-06-13 | 1986-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62201738U true JPS62201738U (zh) | 1987-12-23 |
Family
ID=30950005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9028686U Pending JPS62201738U (zh) | 1986-06-13 | 1986-06-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62201738U (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0290135A (ja) * | 1988-09-28 | 1990-03-29 | Topcon Corp | オートフォーカスプロジェクタ |
KR100480023B1 (ko) * | 1997-12-30 | 2005-07-11 | 엘지전자 주식회사 | 두상투영기의 자동 초점 조절 장치 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5012304A (zh) * | 1973-04-24 | 1975-02-07 | ||
JPS5033653A (zh) * | 1973-07-31 | 1975-03-31 | ||
JPS5461525A (en) * | 1977-10-03 | 1979-05-17 | Polaroid Corp | Variable focus lens unit and camera |
-
1986
- 1986-06-13 JP JP9028686U patent/JPS62201738U/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5012304A (zh) * | 1973-04-24 | 1975-02-07 | ||
JPS5033653A (zh) * | 1973-07-31 | 1975-03-31 | ||
JPS5461525A (en) * | 1977-10-03 | 1979-05-17 | Polaroid Corp | Variable focus lens unit and camera |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0290135A (ja) * | 1988-09-28 | 1990-03-29 | Topcon Corp | オートフォーカスプロジェクタ |
KR100480023B1 (ko) * | 1997-12-30 | 2005-07-11 | 엘지전자 주식회사 | 두상투영기의 자동 초점 조절 장치 |
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