CN202263011U - Layer target for testing vertical solution for ophthalmology - Google Patents
Layer target for testing vertical solution for ophthalmology Download PDFInfo
- Publication number
- CN202263011U CN202263011U CN201120393472XU CN201120393472U CN202263011U CN 202263011 U CN202263011 U CN 202263011U CN 201120393472X U CN201120393472X U CN 201120393472XU CN 201120393472 U CN201120393472 U CN 201120393472U CN 202263011 U CN202263011 U CN 202263011U
- Authority
- CN
- China
- Prior art keywords
- ophthalmology
- clamp plate
- slit
- layer
- target
- 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 - Fee Related
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- Bridges Or Land Bridges (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model relates to an ophthalmology test device, in particular to a layer target for testing vertical solution for ophthalmology. The technical scheme is that the layer target is mainly composed of an upper clamp plate, a lower clamp plate, fixing bolts, metal foil and a slit. The upper clamp plate and the lower clamp plate are fixedly connected through two fixing bolts, the slit is formed between the upper clamp plate and the lower clamp plate, and the metal foil is installed in the middle of the slit. The layer target for testing the vertical solution for the ophthalmology has the advantages that after the target is flatly placed into a water tank, water seeps into the slit and forms a water layer respectively forming two interfaces with the upper clamp plate and the lower clamp plate, the distance between the two interfaces is equal to the thickness of the metal foil, and the water layer is a required target layer. The layer target for testing the vertical solution for the ophthalmology is special for testing the vertical solution and has good test effect.
Description
Technical field:
This utility model relates to a kind of ophthalmology testing equipment, particularly a kind of ophthalmology vertical definition test layer target.
Background technology:
Important index of test is a resolution test in the medical ultrasonic equipment; Wherein, Resolving power is meant that imaging system can differentiate the ability of space scale; Be divided into transverse resolution and vertical definition, and the physical agent of vertical definition and control vertical definition, vertical definition is exactly the minimum range of two targets can distinguishing on axially in ultrasonic beam.And the problem that exists at present is: there is not specialized apparatus, and when the calibrating vertical definition, poor effect.
Summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists to prior art, and a kind of detection effect ophthalmology vertical definition test layer target preferably is provided.
Its technical scheme is: mainly be made up of train wheel bridge, lower plate, set bolt, metal forming, slit; Described train wheel bridge is fixedly connected through two set bolts with lower plate; Form a slit between train wheel bridge and the lower plate, install metal forming in the centre of slit.
The thickness of above-mentioned metal forming is the 40-60 micron.
The beneficial effect of this utility model is: after this target is kept flat people's tank; Water infiltrates this slit, forms a water layer, respectively with two interfaces of two clamping plate formation up and down; Distance between these two interfaces is exactly the thickness of metal forming; This water layer promptly is desired target layer, is exclusively used in the vertical definition test, and its test effect is better.
Description of drawings:
Accompanying drawing 1 is the structural representation of this utility model.
The specific embodiment:
In conjunction with accompanying drawing 1, this utility model is done further to describe:
This utility model mainly is made up of train wheel bridge 1, lower plate 2, set bolt 3, metal forming 4, slit 5; Described train wheel bridge 1 is fixedly connected through two set bolts 3 with lower plate 2; Form a slit 5 between train wheel bridge 1 and the lower plate 2; Install metal forming 4 in the centre of slit 5, the thickness of above-mentioned metal forming 4 is the 40-60 micron.
This utility model is tested vertical definition by special use, and two thick lucite clamping plate of 3mm are fixed together with two set bolts, and the centre sandwiches certain thickness metal forming; Make two zone lines between the lucite form a slit, after this target was kept flat people's tank, water infiltrated this slit; Form a water layer; Form two interfaces with two clamping plate up and down respectively, the distance between these two interfaces is exactly the thickness of metal forming, and this water layer promptly is desired target layer; Select the metal forming of 50 micron thick for use, can obtain satisfactory layer target.
Claims (2)
1. ophthalmology vertical definition test layer target; It is characterized in that: mainly form by train wheel bridge (1), lower plate (2), set bolt (3), metal forming (4), slit (5); Described train wheel bridge (1) is fixedly connected through two set bolts (3) with lower plate (2); Form a slit (5) between train wheel bridge (1) and the lower plate (2), install metal forming (4) in the centre of slit (5).
2. ophthalmology vertical definition test layer target according to claim 1, it is characterized in that: the thickness of described metal forming (4) is the 40-60 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120393472XU CN202263011U (en) | 2011-10-17 | 2011-10-17 | Layer target for testing vertical solution for ophthalmology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120393472XU CN202263011U (en) | 2011-10-17 | 2011-10-17 | Layer target for testing vertical solution for ophthalmology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202263011U true CN202263011U (en) | 2012-06-06 |
Family
ID=46153823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120393472XU Expired - Fee Related CN202263011U (en) | 2011-10-17 | 2011-10-17 | Layer target for testing vertical solution for ophthalmology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202263011U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167240A (en) * | 2017-05-26 | 2017-09-15 | 中国科学院光电研究院 | A kind of mechanical double aperture slit |
-
2011
- 2011-10-17 CN CN201120393472XU patent/CN202263011U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167240A (en) * | 2017-05-26 | 2017-09-15 | 中国科学院光电研究院 | A kind of mechanical double aperture slit |
| CN107167240B (en) * | 2017-05-26 | 2018-08-28 | 中国科学院光电研究院 | A kind of machinery double aperture slit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20121017 |