Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An optical glass and negative anomalous technology, applied in the field of optical glass, can solve problems such as small Abbe value, environmental pollution, and lack of high refractive index
Inactive Publication Date: 2011-11-23
HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
View PDF1 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
A group of SiO with negative anomalous dispersion disclosed in Japanese Patent No. 48-74516 2 -B 2 o 3 -Al 2 o 3 -PbO-Sb 2 o 3 Glass, but does not have high refractive index and small Abbe value, but also contains a large amount of harmful components PbO, which will bring pollution to the environment
For a glass that does not contain PbO and has negative anomalous dispersion, a kind of anomalous dispersion glass disclosed in German early patent 2137748 contains B 2 o 3 , Sb 2 o 3 , Li 2 In addition to O, it also contains GeO 2 、 Ta 2 o 5 such as expensive oxides, the glass is uneconomical to manufacture
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0057] Table 2 shows a kind of optical glass of the present invention with negative anomalous dispersion, the existing SiO in the embodiment (NO.1 to NO.4) in table 2 2 -R 2 O-PbO-TiO 2 Comparative examples of glasses (No. a to No. c) and optical constants of glasses (n d , ν d ), anomalous dispersion (P g,F ). at P g,F -ν d In the figure, the P of the glasses of Examples 1-4 and Comparative Examples a-c are marked with numbers. g,F and ν d coordinate.
[0058] Table 2
[0059]
[0060]
[0061] As shown in Table 2 and the figure, the glasses of Examples 1 to 4 have larger negative anomalous dispersion P than those of Comparative Examples a to c g,F , whose absolute value is greater than that of the glasses of comparative examples a to c.
[0062] In order to manufacture the glasses of Examples 1 to 4, various oxides, carbonates, nitrates and other raw materials were prepared, and according to the melting characteristics of the glass, a special device was used...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
refractive index
aaaaa
aaaaa
Abbe number
aaaaa
aaaaa
refractive index
aaaaa
aaaaa
Login to view more
Abstract
The present invention relates to an optical glass equipped with negatively anomalous dispersion, which belongs to the technical field of optical glass equipped with negatively anomalous dispersion and high refractive index, and resolves the problem of larger abbe coefficient and lower refractive index of the existing optical glass. The invention is composed of the following components, Sb2O3, SiO2, B2O3, Al2O3, Ta2O5, K2O, Na2O, Nb2O5, TiO2, MgO and ZrO2, wherein the contents of the above components are respectively 50-75%, 5-10%, 8-15%, 0-5%, 0-5%, 0-5%, 0-5%, 1-10%, 0-10%, 0-10%, 0-5%. The invention is equipped with bigger negatively anomalous dispersion value (PgF), high refractive index (nd) and smaller abbe coefficient (vd), wherein the refractive index value is with the range of 1.78-1.81, the abbe coefficient is with the range of 23-25, the negatively anomalous dispersion is an optical constant with the range of 0.598-0.612, and the invention is equipped with the effect of correcting the second order spectrum, perfect stability, and has no harmful compositions as plumbum, arsenium and the like, and no high price oxide .
Description
technical field [0001] The invention relates to an optical glass with relatively large negative anomalous dispersion value. Background technique [0002] In an optical lens system, two types of optical glass with different Abbe numbers are usually combined, even without a large anomalous dispersion glass, the chromatic aberration of the two colors of light can be eliminated. With respect to light of other colors, however, there is also a residual chromatic aberration representing the second spectrum (secondary spectrum). When designing optical lens systems, it is desirable to correct or eliminate secondary spectra. This is accomplished by combining an optical lens with large positive anomalous dispersion with an optical lens with negative anomalous dispersion. [0003] No glass having such a high refractive index and negative anomalous dispersion has been found in the art so far. A group of SiO with negative anomalous dispersion disclosed in Japanese Patent No. 48-74516 ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/064C03C4/00
Inventor 邓和平黄少林李克炎张卫戎俊华
Owner HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD