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Optical glass and optical device

A technology of optical glass and optical components, applied in the optical components, optics, glass molding and other directions, can solve the problem of not fully meeting the requirements of optical design, and achieve the effect of high transmittance, reducing unevenness and blurring, and high dispersion

Active Publication Date: 2011-11-23
OHARA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glass moldings with unevenness or blurring on the surface cannot fully meet the increasing demands on optical design in recent years

Method used

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  • Optical glass and optical device
  • Optical glass and optical device
  • Optical glass and optical device

Examples

Experimental program
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Effect test

Embodiment

[0127] Compositions (mass %) of Examples (No.1 to No.31) and Comparative Examples (No.1 to No.2) of the present invention, and Sb of these glasses 2 o 3 Concentrations of ingredients (relative to Sb 2 o 3 The mass % of the mass based on oxides other than the composition), the refractive index (n d ), Abbe number (ν d ), and the wavelengths at which the spectral transmittance shows 70% and 5% (λ 70 , lambda 5 ) results are shown in Table 1 to Table 5. In addition, the following examples are for illustration only, and the present invention is not limited to these examples.

[0128] The test piece of the optical glass of the embodiment (No.1~No.31) of the present invention and the glass of comparative example (No.1~No.2) all adopts following method to make: select the oxide that is equivalent to each component, Hydroxide, carbonate, nitrate, fluoride, hydroxide, methyl phosphoric acid compound and other high-purity raw materials commonly used in optical glass are used as r...

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Abstract

The invention provides an optical glass having the desired high transmission ratio and high chromatic dispersion and capable of reducing the concavo-convex and fuzzy of the surface, and an optical element. The optical glass, based on the total mass of the glass calculated relative to the oxides, comprises 5.0 to 40.0 % by weight of P2O5, 10.0 to 60.0 % by weight of Bb2O5 and 5.0 to 45.0 % by weight of TiO2, and, based on the weight of oxides beside Sb2O3, comprises less than 1.0 % by weight of Sb2O3. Moreover, the optical element takes the optical glass as a base material.

Description

[0001] Instructions for Divisional Application [0002] This patent application is a divisional application with an application date of February 25, 2010, an application number of 201010135190.X, and an invention title of "optical glass and optical elements". technical field [0003] The invention relates to optical glass and optical components. Background technique [0004] In recent years, with the rapid development of digital and high-definition instruments using optical systems, the high precision of optical elements such as lenses used in various optical instruments represented by digital cameras and video cameras (video cameras) Demands for precision, weight reduction, and miniaturization are also increasing. [0005] In the optical glass for making optical elements, the demand for high refractive index glass is very high. This kind of high refractive index glass can reduce the weight and volume of optical elements, and has a high refractive index (n d ), and has an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/21C03C3/253C03C3/062G02B1/00C03B11/00
Inventor 土渊菜那荻野道子
Owner OHARA
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