DE2821573C2 - - Google Patents
Info
- Publication number
- DE2821573C2 DE2821573C2 DE19782821573 DE2821573A DE2821573C2 DE 2821573 C2 DE2821573 C2 DE 2821573C2 DE 19782821573 DE19782821573 DE 19782821573 DE 2821573 A DE2821573 A DE 2821573A DE 2821573 C2 DE2821573 C2 DE 2821573C2
- Authority
- DE
- Germany
- Prior art keywords
- acoustic
- sound transmission
- transmission surface
- flat
- excitation means
- 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
- 230000005540 biological transmission Effects 0.000 claims description 44
- 230000005284 excitation Effects 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 230000005855 radiation Effects 0.000 description 14
- 239000013078 crystal Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 229910052594 sapphire Inorganic materials 0.000 description 4
- 239000010980 sapphire Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000004154 testing of material Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 235000005979 Citrus limon Nutrition 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/32—Sound-focusing or directing, e.g. scanning characterised by the shape of the source
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2071377A GB1602741A (en) | 1977-05-17 | 1977-05-17 | Acoustic test devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2821573A1 DE2821573A1 (de) | 1978-12-21 |
| DE2821573C2 true DE2821573C2 (is") | 1987-09-17 |
Family
ID=10150440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19782821573 Granted DE2821573A1 (de) | 1977-05-17 | 1978-05-17 | Akustische vorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5417701A (is") |
| DE (1) | DE2821573A1 (is") |
| GB (1) | GB1602741A (is") |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4367648A (en) * | 1980-03-25 | 1983-01-11 | National Research Development Corporation | Dark field viewing apparatus |
| JPS63255878A (ja) * | 1987-04-10 | 1988-10-24 | Matsushita Electric Ind Co Ltd | 光学ヘツド支持装置 |
| JPS63304475A (ja) * | 1987-06-04 | 1988-12-12 | Matsushita Electric Ind Co Ltd | 光学ヘッド支持装置 |
| JPS6486375A (en) * | 1987-09-28 | 1989-03-31 | Matsushita Electric Ind Co Ltd | Optical head supporting device |
| JPH01109576A (ja) * | 1987-10-22 | 1989-04-26 | Matsushita Electric Ind Co Ltd | 光学ヘッド支持装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB684418A (en) * | 1949-04-21 | 1952-12-17 | Brush Dev | Focused electromechanical transducing device |
-
1977
- 1977-05-17 GB GB2071377A patent/GB1602741A/en not_active Expired
-
1978
- 1978-05-16 JP JP5813878A patent/JPS5417701A/ja active Granted
- 1978-05-17 DE DE19782821573 patent/DE2821573A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6145772B2 (is") | 1986-10-09 |
| DE2821573A1 (de) | 1978-12-21 |
| JPS5417701A (en) | 1979-02-09 |
| GB1602741A (en) | 1981-11-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |