CN201811718U - Optical system for detecting thickness of glass - Google Patents
Optical system for detecting thickness of glass Download PDFInfo
- Publication number
- CN201811718U CN201811718U CN2010202559915U CN201020255991U CN201811718U CN 201811718 U CN201811718 U CN 201811718U CN 2010202559915 U CN2010202559915 U CN 2010202559915U CN 201020255991 U CN201020255991 U CN 201020255991U CN 201811718 U CN201811718 U CN 201811718U
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- Prior art keywords
- lens
- optical system
- glass
- thickness
- utility
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Abstract
The utility model discloses an optical system for detecting the thickness of glass, which can be used for detecting glass with thickness ranging from 0.02mm to 11mm, and comprises three lenses, the first lens is a negative lens, the second lens is a positive lens, and the third lens is another positive lens. The lenses are made of the same material, and the rear surface of the third lens is designed to be aspheric.
Description
[technical field]
The utility model relates to a kind of optical system that thickness of glass detects that is used for, and refers to a kind of optical system of utilizing the thickness of glass detection of confocal principle especially.
[background technology]
In recent years, the fast development of pharmaceuticals industry, the demand of small-sized glass container increases rapidly, because domestic enterprise's production technology is relative with equipment backward, it is bigger that its quality and developed country like product are compared gap, has a strong impact on high-end product production.Glass container wall thickness, shoulder curvature, container port size are the key character parameters that directly influences container mass.So in the glass container production run, these important parameters must detect.The characteristics that have high temperature, red heat in the glass container production, fragility are big and difficult employing contact method is measured must adopt the noncontact online measuring technique to realize the measurement of each parameter.
At present, adopt contact type measurement mostly, though the precision height very easily scratches glass surface, cause economic loss, and speed is slow, have no idea to carry out on-line measurement for the detection of thickness of glass.For the glass material that under high temperature, red heat environment, carries out production and processing, have no idea at all to accomplish that real time and on line monitoring detects.
In the non-contact detecting of some glass, more commonly use imaging method and laser scanning method, the system architecture more complicated causes source of error more, and measuring speed is slower, is difficult to effectively improve measure quality.
[utility model content]
The utility model purpose is to provide a kind of optical system that thickness of glass detects that is used for, and it is not only simple in structure, and source of error is few, and the precision height, and measuring speed is fast, and measurement range is bigger.
According to above-mentioned purpose of the present utility model, the utility model provides a kind of and is used for the optical system that thickness of glass detects, and the light of each wavelength at the disc of confusion diameter of image planes imaging all less than 0.095mm.This optical system is made up of three lens, and wherein first lens are negative lenses, and second lens are positive lenss, and the 3rd lens are positive lenss, and the material that these lens adopt is identical.
A back face of the 3rd lens of above-mentioned optical system has been designed to aspheric surface.
The material refractive index that three lens of above-mentioned optical system adopt is identical, is 1.81.
Compared to prior art, the utility model is used for the shape of optical system by rationally utilizing material and distributing eyeglass that thickness of glass detects, and can reduce the aberration of system, improves measuring accuracy.
[description of drawings]
Fig. 1 is the structural drawing that originally is used for the optical system of thickness of glass detection.
[embodiment]
The utility model is used for the optical system employing white light incident that thickness of glass detects, and behind photosystem, the light of different wave length converges in the difference of optical axis, and this scope is measurement range.The measurement range that is used for the optical system of thickness of glass detection of the present utility model can reach 11.8mm, and the light of each wavelength is 0.019mm-0.095mm at the diameter of the disc of confusion of image planes imaging, and conjugate distance is from being 170mm.
Above-mentioned optical system is made up of three lens, and wherein first lens 10 are negative lenses, and second lens 20 are positive lenss, and the 3rd lens 30 are positive lenss, and the glass material that these lens adopted is identical.Refractive index (Nd) is 1.8052.For aberration correction, a back face of the 3rd lens is designed to aspheric surface, not only reduced the number of lens, also improved measuring accuracy.
Claims (5)
1. one kind is used for the optical system that thickness of glass detects, and it can be promoted to micron order to measuring accuracy.This optical system mainly comprises three lens, it is characterized in that: system is made up of three lens, and first lens are negative lenses, and second lens are positive lenss, and the 3rd lens are positive lenss.
2. the optical system that is used for the thickness of glass detection as claimed in claim 1, it is characterized in that: a back face of the 3rd lens has been designed to aspheric surface.
3. the optical system that is used for the thickness of glass detection as claimed in claim 1, it is characterized in that: the refractive index of first lens is 1.81.
4. the optical system that is used for the thickness of glass detection as claimed in claim 1, it is characterized in that: the refractive index of second lens is 1.81.
5. the optical system that is used for the thickness of glass detection as claimed in claim 1, it is characterized in that: the refractive index of the 3rd lens is 1.81.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202559915U CN201811718U (en) | 2010-07-13 | 2010-07-13 | Optical system for detecting thickness of glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202559915U CN201811718U (en) | 2010-07-13 | 2010-07-13 | Optical system for detecting thickness of glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201811718U true CN201811718U (en) | 2011-04-27 |
Family
ID=43894657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202559915U Expired - Fee Related CN201811718U (en) | 2010-07-13 | 2010-07-13 | Optical system for detecting thickness of glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201811718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331615A (en) * | 2010-07-13 | 2012-01-25 | 徐熙平 | Optical system for detecting thickness of transparent material |
-
2010
- 2010-07-13 CN CN2010202559915U patent/CN201811718U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331615A (en) * | 2010-07-13 | 2012-01-25 | 徐熙平 | Optical system for detecting thickness of transparent material |
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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: 20110427 Termination date: 20130713 |