JPH0431900U - - Google Patents
Info
- Publication number
- JPH0431900U JPH0431900U JP7197790U JP7197790U JPH0431900U JP H0431900 U JPH0431900 U JP H0431900U JP 7197790 U JP7197790 U JP 7197790U JP 7197790 U JP7197790 U JP 7197790U JP H0431900 U JPH0431900 U JP H0431900U
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- spherical
- light
- sound pressure
- emitting element
- 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
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims 1
- 230000010255 response to auditory stimulus Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Landscapes
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Description
第１図は本考案の一実施例の光マイクロホンの
構成を示す構成図、第２図は第１図に示した実施
例の光マイクロホンの音圧を検出するための説明
をする説明図、第３図は第１図に示した実施例の
光マイクロホンの音圧検出の様子を説明するため
の説明図、第４図は第１図に示した実施例の光マ
イクロホンの音圧検出の様子を説明するための説
明図、第５図は信号変換手段の構成を示す構成図
、第６図は振動板の振動と音声信号との特性を示
す特性図、第７図は本考案の他の実施例の構成を
示す構成図、第８図は本考案の更に他の実施例の
構成を示す断面構成図、第９図は従来の光マイク
ロホンの構成を示す構成図である。
１１……固定部材、１２……振動板、１３……
レーザダイオード、１４……ビームスプリツタ、
１６……非点収差発生部、１７……４分割光検出
器、２１……平板ガラス、２２……ホログラムレ
ーザユニツト。
FIG. 1 is a block diagram showing the configuration of an optical microphone according to an embodiment of the present invention, FIG. 2 is an explanatory diagram illustrating how to detect the sound pressure of the optical microphone according to the embodiment shown in FIG. Figure 3 is an explanatory diagram for explaining how the optical microphone in the embodiment shown in Figure 1 detects sound pressure, and Figure 4 shows how the optical microphone in the embodiment shown in Figure 1 detects sound pressure. An explanatory diagram for explaining, FIG. 5 is a configuration diagram showing the configuration of the signal conversion means, FIG. 6 is a characteristic diagram showing the characteristics of the vibration of the diaphragm and the audio signal, and FIG. 7 is another implementation of the present invention. FIG. 8 is a cross-sectional diagram showing the construction of still another embodiment of the present invention, and FIG. 9 is a construction diagram showing the construction of a conventional optical microphone. 11... Fixed member, 12... Vibration plate, 13...
Laser diode, 14...beam splitter,
16... Astigmatism generating section, 17... 4-split photodetector, 21... Flat glass, 22... Hologram laser unit.
Claims (1)
する振動板と、 球面状の振動板の凹面側の焦点位置近傍に配置
された発光素子と、 球面状の振動板により反射された発光素子から
の光束を受けるため球面状の振動板の焦点位置近
傍に配置された受光手段と、 受光手段から出力される信号から音圧に応じた
信号を生成する信号変換手段とを備えたことを特
徴とする光マイクロホン。[Scope of Claim for Utility Model Registration] A diaphragm having a spherical light reflecting surface that vibrates in response to sound pressure, a light emitting element disposed near a focal point on the concave side of the spherical diaphragm, and a spherical diaphragm. a light receiving means disposed near the focal point of the spherical diaphragm to receive the light flux from the light emitting element reflected by the diaphragm; and a signal generating a signal corresponding to the sound pressure from the signal output from the light receiving means. An optical microphone characterized by comprising a conversion means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7197790U JPH0431900U (en) | 1990-07-06 | 1990-07-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7197790U JPH0431900U (en) | 1990-07-06 | 1990-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0431900U true JPH0431900U (en) | 1992-03-16 |
Family
ID=31609497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7197790U Pending JPH0431900U (en) | 1990-07-06 | 1990-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0431900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001268696A (en) * | 2000-03-17 | 2001-09-28 | Nippon Hoso Kyokai <Nhk> | Optical microphone |
-
1990
- 1990-07-06 JP JP7197790U patent/JPH0431900U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001268696A (en) * | 2000-03-17 | 2001-09-28 | Nippon Hoso Kyokai <Nhk> | Optical microphone |