JPH0347511U - - Google Patents
Info
- Publication number
- JPH0347511U JPH0347511U JP10891589U JP10891589U JPH0347511U JP H0347511 U JPH0347511 U JP H0347511U JP 10891589 U JP10891589 U JP 10891589U JP 10891589 U JP10891589 U JP 10891589U JP H0347511 U JPH0347511 U JP H0347511U
- Authority
- JP
- Japan
- Prior art keywords
- laser
- projection surface
- output
- illuminance
- semiconductor laser
- 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.)
- Granted
Links
- 239000004065 semiconductor Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Semiconductor Lasers (AREA)
Description
第１図は本考案の一実施例に係るレーザポイン
タ装置の構成を示すブロツク図、第２図は本実施
例のレーザポインタ装置の回路構成を示すブロツ
ク図、第３図ａ〜ｃは本実施例のレーザポインタ
装置における各部の出力をそれぞれ示す線図であ
る。
図において、１……半導体レーザ、２……投射
光学系、３……光電変換素子、４……側光光学系
、５……電子回路、６……電源、７……筐体、８
……半導体レーザ駆動回路、９……ＬＰＦ、Ｐ…
…投射面、Ｓ……輝点スポツトである。
FIG. 1 is a block diagram showing the configuration of a laser pointer device according to an embodiment of the present invention, FIG. 2 is a block diagram showing the circuit configuration of the laser pointer device of this embodiment, and FIGS. It is a diagram which shows the output of each part in the laser pointer device of an example. In the figure, 1... Semiconductor laser, 2... Projection optical system, 3... Photoelectric conversion element, 4... Side light optical system, 5... Electronic circuit, 6... Power supply, 7... Housing, 8
...Semiconductor laser drive circuit, 9...LPF, P...
...Projection surface, S... bright spot.
Claims (1)
光して光ビームとしこの光ビームを投射面に投射
することにより指示を行うレーザポインタ装置に
おいて、 投射面の照度を測る照度センサと、 この照度センサの出力に応じて投射面の照度が
高ければ半導体レーザのレーザ出力を大きくし投
射面の照度が低ければ半導体レーザのレーザ出力
を小さくする電子回路と を備えることを特徴とするレーザポインタ装置。[Scope of Claim for Utility Model Registration] In a laser pointer device that provides instructions by condensing laser light generated by a semiconductor laser using an optical system to form a light beam and projecting this light beam onto a projection surface, and an electronic circuit that increases the laser output of the semiconductor laser when the illuminance of the projection surface is high and decreases the laser output of the semiconductor laser when the illuminance of the projection surface is low according to the output of the illuminance sensor. Features of laser pointer device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10891589U JPH089700Y2 (en) | 1989-09-18 | 1989-09-18 | Laser pointer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10891589U JPH089700Y2 (en) | 1989-09-18 | 1989-09-18 | Laser pointer device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0347511U true JPH0347511U (en) | 1991-05-02 |
| JPH089700Y2 JPH089700Y2 (en) | 1996-03-21 |
Family
ID=31657527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10891589U Expired - Lifetime JPH089700Y2 (en) | 1989-09-18 | 1989-09-18 | Laser pointer device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089700Y2 (en) |
-
1989
- 1989-09-18 JP JP10891589U patent/JPH089700Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH089700Y2 (en) | 1996-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |