CN1935717A - Optical glass for high-refractivity low dispersion precision die mould - Google Patents

Optical glass for high-refractivity low dispersion precision die mould Download PDF

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CN1935717A
CN1935717A CNA2006100220543A CN200610022054A CN1935717A CN 1935717 A CN1935717 A CN 1935717A CN A2006100220543 A CNA2006100220543 A CN A2006100220543A CN 200610022054 A CN200610022054 A CN 200610022054A CN 1935717 A CN1935717 A CN 1935717A
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glass
content
optical
optical glass
die mould
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CN1935717B (en
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匡波
孙伟
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Chengdu Guangming Optoelectronics Co Ltd
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Chengdu Guangming Optoelectronics Co Ltd
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Priority to JP2009510265A priority patent/JP5094846B2/en
Priority to KR1020087025530A priority patent/KR101048238B1/en
Priority to PCT/CN2007/002921 priority patent/WO2008046300A1/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
    • C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths

Abstract

The invention provides a high-refractivity, low-dispersivity, fine moulding optical glass, comprising SiO2:1-8wt%, B2O3:16-30wt%, La2O3:15-40wt%, Gd2O3:0-20wt%, ZnO:8-30wt%, Nb2O5:0.5-14.5wt%, WO3:0-12.5wt%, TiO2:0-9wt%, Li2O:0.5-4wt%, ZrO2:1-10 wt%, Y2O3:0-5 wt%, Yb2O3:0-5 wt%, Lu2O3:0-5 wt%, Na2O: 0-3 wt%, K2O:0-2 wt%, Al2O3:0-2 wt%, BaO:0-3 wt%, CaO:0-3 wt%, SrO:0- 3 wt%, MgO:0-3 wt%, Sb2O3:0-0.5 wt%, and SnO2:0-0.5 wt%. And the invention adopts a B2O3-SiO2-La2O3(Gd2O3)-ZnO system, and uses Nb2O5, WO3 and TiO2 in the reasonable proportion to make glass have the required optical constants and good physicochemical properties of fine moulding. And its transformation temperature (Tg) is lower than 560 deg.C. And it has no high-price Ta2O5 but has good chemical stability, able to be produced in batches and stably by single pot or continous smelting furnace, or other equipment, and suitable for low-cost and fine moulding nonspherical lenses and other optical components.

Description

Optical glass for high-refractivity low dispersion precision die mould
Technical field
The present invention relates to a kind of opticglass, particularly relate to and a kind ofly have specific refractory power (Nd) for 1.77-1.84, Abbe number (Vd) is the Spectralite with high refractivity and low dispersion of 36-44.
Background technology
Along with the cut-throat competition and the development in photovoltaic market, high yield, make the target that optical element is each optical material and optical element manufacturers at low cost.Adopt precise compression molding technology (comprising direct die mould method and secondary press method) can reduce raw material consumption, thereby the machining amount that reduces optical element greatly reduces the manpower and materials cost, and can be easier to realize stably manufactured in batches, can also alleviate environmental pollution simultaneously.On the other hand, increased popularity such as digital camera, digital camera, camera cell phone in recent years, the integrated level and the function that are used for the mechanical means of optical system increase sharply.In this case, require optical system to reach higher accuracy, and alleviate the weight of optical system and reduce size.The main method that addresses this problem at present is to adopt aspherical mirror, uses non-spherical element to become the main flow of optical design, and the manufacturing of non-spherical lens then is extensive use of the method for accurate die pressing.
So-called accurate die pressing, be exactly under certain temperature, pressure, with high-accuracy mould moulded glass prefabricated component, thereby obtain to have the finished product shape (or being in close proximity to the finished product shape) and have the glasswork of optical function face with predetermined prod shape.Adopt the non-spherical lens of accurate die pressing technology manufacturing need not carry out grinding and polishing more usually, thereby reach high yield purpose cheaply.Can make various optical glass device products such as spherical lens, non-spherical lens, prism, diffraction grating etc. by the accurate die pressing technology now.
When carrying out precise compression molding; for high-accuracy die face is replicated on the glass ware forming product; need (usually at the above 15-40 of glass softening point temperature ℃) extrusion forming glass preform at high temperature; at this moment shaping mould is exposed in the high temperature and is subjected to higher pressure; even be in the protective atmosphere, still oxidized easily, the erosion of casted die mould superficial film.High-accuracy mould is prime cost source in the opticglass accurate die pressing operation, and mould uses and do not reach certain die mould number of times, just can not realize the purpose of low cost, a large amount productive rate.For prolonging die life, suppress hot environment to the damage of shaping mould, wish to reduce as far as possible the die mould temperature, therefore, require the transition temperature (Tg) of glass material and softening temperature (Ts) as far as possible low.
The optical glass that is used for non-spherical lens, requirement has the glass of various optical constants, Nd is 1.77-1.84, Vd is that the optical glass of 36-44 is used more in senior imaging device of modern times, such optical glass that contains lead, thorium is not because producing and use environment being harmful, and such optical glass not leaded, thorium is generally B 2O 3(SiO 2)-La 2O 3-Nb 2O 5(Ta 2O 5)-RO (R represents alkaline-earth metal) system, the softening temperature of glass far above 600 ℃, is not suitable for accurate die pressing usually.
US Patent No. P20030032542 discloses a kind of B 2O 3(SiO 2)-La 2O 3-Gd 2O 3-Nb 2O 5-ZrO 2The optical glass of system, this glass refraction are more than 1.80, and Abbe number is about 40, but the transition temperature of glass is not suitable for doing the accurate die pressing material more than 650 ℃.Chinese patent 02155831.0 discloses a kind of B 2O 3-SiO 2-La 2O 3-Gd 2O 3-ZnO-Li 2The optical glass system that O forms, but the Abbe number of glass is difficult to reach below 43, and from embodiment, contain the expensive Ta of more content in the glass composition 2O 5, the glass cost is higher, has reduced product competitiveness.Japanese kokai publication hei 06-305769 discloses a kind of SiO 2-B 2O 3-La 2O 3-Ta 2O 5-ZnO-Li 2O system optical glass for precision profiling, the more Ta of the same use of this system glass 2O 5, and the liquidus temperature of glass is higher, is unfavorable for mass production.Japanese kokai publication hei 2002-362938 discloses a kind of B 2O 3-SiO 2-La 2O 3-ZnO-Nb 2O 5-Ta 2O 5-WO 3The disclosed B of the flat 2002-012443 of system and JP 2O 3-SiO 2-La 2O 3-Li 2O-ZnO-Nb 2O 5-Ta 2O 5-WO 3System although can reach lower softening temperature, has all used a certain amount of Ta 2O 5, glass cost costliness.
Summary of the invention
Technical problem to be solved by this invention provides a kind of optical glass for high-refractivity low dispersion precision die mould, and this optical glass is not leaded, arsenic, cadmium etc. is to environmentally hazardous substance, does not contain expensive Ta 2O 5, glass transition temperature satisfies the accurate die pressing requirement.
The technical scheme that technical solution problem of the present invention adopts is: optical glass for high-refractivity low dispersion precision die mould, its percentage by weight consists of: SiO 2: 1-8%, B 2O 3: 16-30%, La 2O 3: 15-40%, Gd 2O 3: 0-20%, ZnO:8-30%, Nb 2O 5: 0.5-14.5%, WO 3: 0-12.5%, TiO 2: 0-9%, Li 2O:0.5-4%, ZrO 2: 1-10%, Y 2O 3: 0-5%, Yb 2O 3: 0-5%, Lu 2O 3: 0-5%, Na 2O:0-3%, K 2O:0-2%, Al 2O 3: 0-2%, BaO:0-3%, CaO:0-3%, SrO:0-3%, MgO:0-3%, Sb 2O 3: 0-0.5% and SnO 2: 0-0.5%.
The invention has the beneficial effects as follows: the present invention adopts B 2O 3-SiO 2-La 2O 3(Gd 2O 3)-ZnO system, the Nb of use rational proportion 2O 5, WO 3, TiO 2Make glass reach needed optical constant and have the good physical chemical characteristic that is suitable for precise compression molding.Optical glass transition temperature of the present invention (Tg) is lower than 560 ℃, does not contain the Ta of high price in the component 2O 5, simultaneously glass has good chemical stability, can be on the equipment such as single crucible or continuous smelting tank furnace steady production in batches, be suitable for the optical elements such as low-cost precise compression molding non-spherical lens.
Embodiment
Weight percentage ranges according to the definite above-mentioned component of experiment is described below the effect of above-mentioned each composition and the reason of circumscription.
B 2O 3Being that glass network generates oxide body, is the necessary composition that consists of glass network, especially in the lanthanide glass of high index of refraction, and B 2O 3It is the Main Ingredients and Appearance that obtains stabilized glass.Work as B 2O 3When content was lower than 16%, the meltdown property of glass degenerated, and devitrification resistance property is undesirable; Work as B 2O 3Content is higher than 30%, and the refractive index of glass does not reach design object, so B 2O 3Preferred content (weight percent content, as follows) be 16%-30%, more preferably content is 19-26%.
SiO 2Also be that the network that forms glass generates oxide body, add a certain amount of SiO 2, can increase the high temperature viscosity of glass, improve the devitrification resistance and the chemical stability of glass.When it contains quantity not sufficient 1%, the production technology poor performance of glass, i.e. aforementioned effect is not obvious, descends devitrification resistance variation, raw material fusing difficulty when producing simultaneously, so SiO if surpass 8% glass refraction 2Content is preferably 1-8%, and more preferably content is 1-6%.
La 2O 3The Main Ingredients and Appearance of high refraction low-dispersion lanthanide optical glass, for increasing the refractive index of glass and the chromatic dispersion that can obviously not improve glass, in the present invention with B 2O 3Mix the devitrification resistance property that can improve glass when existing, improve the chemical stability of glass.Work as La 2O 3Content can not obtain above-mentioned effect less than 15% the time, and when its content surpassed 40%, the crystallization property of glass worsened, so La 2O 3Content is preferably 15-40%.
Gd 2O 3Effect and La 2O 3Similar, also be to increase the refractive index of glass and the chromatic dispersion that can obviously not improve glass, play the effect that improves chemical durability of glass and devitrification ability at physical and chemical performance.Use a certain amount of Gd 2O 3Replace La 2O 3, can suitably improve the devitrification ability of glass, but can cause the increase of specific gravity of glass.Work as Gd 2O 3When content was higher than 20%, the devitrification ability of glass worsened, so Gd 2O 3Content be preferably 0-20%, 5-15% more preferably.
In the present invention, for guaranteeing the high-refractivity and low-dispersion optical property of glass, require La 2O 3And Gd 2O 3Total content be no less than 20%, but work as La 2O 3And Gd 2O 3Total content when being higher than 45%, the bad stability of glass, the devitrification ability descends, softening temperature sharply raises, so La 2O 3And Gd 2O 3Total content be preferably 20-45%.
ZnO is the necessary composition of glass of the present invention, helps reducing the temperature of fusion and the softening temperature of glass, and the effect of adjusting the glass optical property is arranged.When it contained quantity not sufficient 8%, the softening temperature of glass rose; And when its content was higher than 30%, the chromatic dispersion of glass increased, and tendency towards devitrification increases, and the high temperature viscosity of glass diminishes simultaneously, brings very big difficulty to glass ware forming, so the content of ZnO is preferably 8-30%, more preferably 12-28%.
Nb 2O 5The effective ingredient that improves glass refraction, when its content less than 0.5% the time, the refractive index of glass does not reach design object, and when its content is higher than 14.5%, can cause the glass transition temperature rising, and the transmitance of glass is declined to a great extent, so Nb 2O 5Content be preferably 0.5-14.5%.
WO 3Have the effect that improves glass refraction and chromatic dispersion and improve the devitrification of glass performance, but experiment shows that the anti-devitrification ability of glass reduces on the contrary, so WO when its content surpasses 12.5% 3Preferred content be 0-12.5%, more preferably content 0-8%.
TiO 2Specific refractory power and chromatic dispersion for raising glass are very effective, and can improve the water tolerance of glass, reduce specific gravity of glass, in the present invention, and TiO 2Also play and increase the glass high temperature viscosity to improve the effect of devitrification of glass performance.But its too high levels can cause glass coloring.So TiO 2Content is preferably 0-9%.
Above-mentioned Nb 2O 5, WO 3And TiO 2The content sum be 6.5-24%.
Li 2O is the effective ingredient that reduces the transition temperature of glass and softening temperature, Li 2O also has strong fluxing action.When its content is lower than 0.5%, to reducing the transition temperature DeGrain; But when content was higher than 4%, the devitrification resistance of glass sharply descended, so Li 2The preferred content of O is 0.5-4%, and more preferably content is 0.5-3%.
ZrO 2Have the effect of improving the glass devitrification resistance, improving chemical stability, in group of the lanthanides glass, also play and improve the effect that specific refractory power reduces chromatic dispersion.But its content is lower than at 1% o'clock, does not have above-mentioned effect; When its content is higher than 10%, cause that glass transition temperature rises, the glass devitrification resistance worsens simultaneously.So ZrO 2Preferred content be 1-10%.
Y 2O 3, Yb 2O 3And Lu 2O 3Have the effect that improves stability, glass and devitrification resistance property, can also adjust the optical constant of glass, surpass 5% but work as content, can cause that glass transformation temperature raises, so Y 2O 3Preferred content is 0-5%, does not more preferably add; Yb 2O 3Preferred content is 0-5%, does not more preferably add; Lu 2O 3Preferred content is 0-5%, does not more preferably add.
Na 2O has the reduction glass transformation temperature, improves the effect of glass transparent degree, surpasses 3% but work as its content, can increase the tendency towards devitrification of glass, significantly reduces the specific refractory power of glass simultaneously, so Na 2The O preferred content is 0-3%, and more preferably content is 0-1%.
K 2The effect of O and Na 2O is similar, and its preferred content is 0-2%, does not more preferably add.
Al 2O 3Can improve the chemical stability of glass, increase the glass high temperature viscosity, be higher than 2% but work as its content, can cause that the devitrification resistance of glass descends, increase the melting difficulty.So Al 2O 3Be preferably 0-2%, more preferably do not add.
BaO can reduce the chromatic dispersion of glass, improves simultaneously the transmitance of glass.But when content surpasses 3%, can not reach the specific refractory power target of glass, can increase the tendency towards devitrification of glass simultaneously.Therefore BaO optimum seeking method content is 0-3%.
CaO can improve the chemical stability of glass, and fluxing action is arranged, and increases but its content is higher than the tendency towards devitrification of 3% o'clock glass.Therefore the CaO preferred content is 0-3%, does not more preferably add.
Effect and the CaO of MgO and SrO are similar, can improve the homogenieity of glass.The MgO preferred content is 0-3%, does not more preferably add; The SrO preferred content is 0-3%, does not more preferably add.
Sb 2O 3And SnO 2Use Sb as defrother 2O 3Preferred content is 0-0.5%, does not more preferably add; SnO 2Preferred content is 0-0.5%, does not more preferably add.
Consider environmentally safe, the present invention does not use PbO, As 2O 3With compositions such as CdO.
Production method of the present invention is:
Oxide compound, oxyhydroxide, carbonate, nitrate raw material with the composition correspondence, weighing in proportion, add in platinum crucible or the continuous smelting tank furnace behind the thorough mixing, lower the temperature after fusing, the clarification and homogenization down at 1240-1320 ℃, melten glass liquid is poured in the metal die after the preheating, glass is put into annealing furnace together with metal pattern, after the Xu Leng annealing promptly.
Below be embodiments of the invention, but the present invention is not subjected to the restriction of these embodiment.
Embodiment: 1-24
Table 1, table 2, table 3 and table 4 have been listed 24 embodiment of the present invention and 3 comparative examples, and specific refractory power (Nd), Abbe number (Vd), transition temperature (Tg), density (d) and the transmitance of having listed glass in the table is 80% and 5% wavelength ratio (representing with λ 80, λ 5 respectively).
Component Embodiment
1 2 3 4 5 6 7
SiO 2 5.05 4.70 5.05 4.0 8.0 7.5 7.0
B 2O 3 21.0 19.2 21.6 20.0 25.0 18 22.0
La 2O 3 38.05 26.7 33.1 28.5 24.0 28.5 26.9
Gd 2O 3 13.4 5 8.0 6 9.0
ZnO 22.9 20.0 22.4 27.5 17.0 17.7 14.5
Nb 2O 5 7.1 6.0 2.6 6.3 5.0 6.0 6.0
WO 3 3.2 4.2 5.2 3.0 3.0 5.0
TiO 2 1.3 1.2 6.3 2.2 2.0
Li 2O 1.2 1.8 1.2 1.0 2.8 1.8 2.0
ZrO 2 3.4 3.2 3.5 2.5 3.5 9.0 5.0
Ta 2O 5
CaO
Y 2O 3 0.5 1.0 1.0
Yb 2O 3
Lu 2O 3
Al 2O 3
SrO 0.5
BaO
Na 2O 0.4 0.5
K 2O
MgO
SnO 2 0.1 0.1 0.1
Sb 2O 3 0.05
Nd 1.81092 1.80607 1.82037 1.80040 1.77874 1.80350 1.79382
Vd 40.42 41.10 37.02 41.09 42.11 41.8 40.01
Tg(℃) 545 540 545 530 530 520 545
d(g/cm 3) 4.48 4.48 4.34 4.49 4.40 4.47 4.46
λ80/λ5 39/34 39/34 41/35 39/34 39/34 40/34 39/34
Table 1
Component Embodiment
8 9 10 11 12 13 14
SiO 2 4.4 6.0 5.0 8.0 7.5 3.0 4.9
B 2O 3 21.6 26.0 21.5 22.0 18.5 25.0 21.0
La 2O 3 40.0 30.0 30.0 31.0 36.5 28.0 19.6
Gd 2O 3 6.5 4.0 6.5 9.3
ZnO 22.3 17.0 23.5 12.5 18.7 8.0 19.9
Nb 2O 5 5.0 5.4 6.5 8.5 6.5 7.0 6.2
WO 3 2.0 5.8 2.2 3.5 3.0 12.5 2.2
TiO 2 1.1 0.8 1.3 1.0 0.5 3.5 1.3
Li 2O 0.60 2.5 0.6 2.5 1.0 2.5 1.6
ZrO 2 3.0 4.0 2.4 5.9 7.8 3.0 3.4
Ta 2O 5
CaO 1.0
Y 2O 3 2.0 0.6
Yb 2O 3
Lu 2O 3
Al 2O 3 0.4
SrO
BaO 1.0
Na 2O 0.5
K 2O
MgO
SnO 2 0.1
Sb 2O 3 0.1
Nd 1.81022 1.77532 1.80402 1.78535 1.8090 1.8395 1.80036
Vd 41.00 42.4 40.92 40.72 40.6 38.6 41.6
Tg(℃) 560 525 560 545 540 530 540
d(g/cm 3) 4.47 4.34 4.49 4.38 4.49 4.50 4.48
λ80/λ5 41/34 39/34 40/34 39/34 40/34 41/35 39/34
Table 2
Component Embodiment
15 16 17 18 19 20 21
SiO 2 6.9 5.05 4.0 8.0 4.0 5.2 3.4
B 2O 3 20.0 23.1 21.5 19.0 20.0 21.1 22.0
La 2O 3 30.0 30.8 28.0 28.0 28.0 27.5 28.9
Gd 2O 3 7.0 10.0 8.8 9.0 10 10
ZnO 20.0 24.5 19.2 10.0 22.5 22.0 20.2
Nb 2O 5 4.0 2.8 7.0 14.4 6.0 6.5 6.4
WO 3 1.0 2.5 2.0 5.0 2.2 2.5
TiO 2 1.5 9.0 1.3 1.8 0.8 1.4
Li 2O 1.1 1.25 2.0 3.0 2.0 1.4 1.7
ZrO 2 3.5 3.5 3.5 5.0 3.5 3.3 2.5
Ta 2O 5
CaO
Y 2O 3 1.0
Yb 2O 3 5.0
Lu 2O 3 1.0
Al 2O 3
SrO
BaO
Na 2O
K 2O
MgO
SnO 2
Sb 2O 3
Nd 1.8011 1.8306 1.80361 1.81750 1.80308 1.79489 1.80300
Vd 43.3 36.01 40.65 38.49 41.5 41.4 41.0
Tg(℃) 560 555 530 540 540 550 535
d(g/cm 3) 4.50 4.35 4.47 4.50 4.49 4.47 4.46
λ80/λ5 40/34 41/35 39/34 41/35 39/34 39/34 40/34
Table 3
Component Embodiment Comparative example
22 23 24 1 2 3
SiO 2 1.0 5.0 4.0 3.0 7.0
B 2O 3 30.0 22.0 20.6 30.0 22.0 21.0
La 2O 3 26.0 15.6 32.0 35.0 32.0 27.0
Gd 2O 3 9.8 20 2.0
ZnO 16.0 20.0 30.0 5.2 23.0 19.0
Nb 2O 5 9.0 7.0 6.0 17.0 6.0 8.0
WO 3 3.0 5.1 1.3 5.0 5.9 6.0
TiO 2 1.0 1.1 3.5
Li 2O 1.2 1.3 0.5 1.3 1.0 1.0
ZrO 2 3.0 4.0 2.5 3.5 2.0 1.5
Ta 2O 5 5.0 5.0
CaO
Y 2O 3 0.5
Yb 2O 3 3.0
Lu 2O 3
Al 2O 3
SrO
BaO
Na 2O
K 2O
MgO
SnO 2
Sb 2O 3 0.1 0.5
Nd 1.7712 1.7833 1.8126 1.8187 1.8059 1.8120
Vd 40.6 40.2 40.1 38.5 40.5 36.7
Tg(℃) 550 540 550 595 535 575
d(g/cm 3) 4.45 4.48 4.42 4.52 4.50 4.50
λ80/λ5 40/34 39/34 40/34 41/35 39/34 42/35
Table 4
As can be seen from the above embodiments: the refractive index of optical glass of the present invention (Nd) is 1.77-1.84, Abbe number (Vd) is 35-43, glass transformation temperature is no more than 560 ℃, the chemical stability excellence, devitrification resistance and degree of staining are good, proportion is little, is very suitable for the optical elements such as precise compression molding non-spherical lens, spherical lens, and does not contain expensive Ta in the glass component 2O 5Raw material, with low cost, have market competition advantage.

Claims (5)

1, optical glass for high-refractivity low dispersion precision die mould is characterized in that: its percentage by weight consists of: SiO 2: 1-8%, B 2O 3: 16-30%, La 2O 3: 15-40%, Gd 2O 3: 0-20%, ZnO:8-30%, Nb 2O 5: 0.5-14.5%, WO 3: 0-12.5%, TiO 2: 0-9%, Li 2O:0.5-4%, ZrO 2: 1-10%, Y 2O 3: 0-5%, Yb 2O 3: 0-5%, Lu 2O 3: 0-5%, Na 2O:0-3%, K 2O:0-2%, Al 2O 3: 0-2%, BaO:0-3%, CaO:0-3%, SrO:0-3%, MgO:0-3%, Sb 2O 3: 0-0.5% and SnO 2: 0-0.5%.
2, optical glass for high-refractivity low dispersion precision die mould as claimed in claim 1 is characterized in that: its percentage by weight consists of: SiO 2: 1-6%, B 2O 3: 19-26%, La 2O 3: 15-40%, Gd 2O 3: 5-15%, ZnO:12-28%, Nb 2O 5: 0.5-14.5%, WO 3: 0-8%, TiO 2: 0-9%, Li 2O:0.5-3%, ZrO 2: 1-10%, Na 2O:0-1% and BaO:0-3%.
3, optical glass for high-refractivity low dispersion precision die mould as claimed in claim 1 or 2 is characterized in that: described La 2O 3And Gd 2O 3The percentage by weight sum be 20-45%.
4, optical glass for high-refractivity low dispersion precision die mould as claimed in claim 1 or 2 is characterized in that: described Nb 2O 5, WO 3And TiO 2The percentage by weight sum be 6.5-24%.
5, optical glass for high-refractivity low dispersion precision die mould according to claim 1 and 2 is characterized in that: the transition temperature of described opticglass is no more than 560 ℃.
CN2006100220543A 2006-10-17 2006-10-17 Optical glass for high-refractivity low dispersion precision die mould Active CN1935717B (en)

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CN2006100220543A CN1935717B (en) 2006-10-17 2006-10-17 Optical glass for high-refractivity low dispersion precision die mould
JP2009510265A JP5094846B2 (en) 2006-10-17 2007-10-11 Optical glass for high refractive index low color dispersion precision press molding
KR1020087025530A KR101048238B1 (en) 2006-10-17 2007-10-11 Optical index for high refractive index, low dispersion precision extrusion
PCT/CN2007/002921 WO2008046300A1 (en) 2006-10-17 2007-10-11 High-refractivity low-dispersion optical glass for precise press molding

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CN101948245A (en) * 2009-02-27 2011-01-19 肖特公开股份有限公司 Opticglass
CN102167508A (en) * 2010-12-17 2011-08-31 成都赛林斯科技实业有限公司 Optical glass with high refraction index and manufacturing method thereof
CN101450840B (en) * 2007-11-30 2012-01-18 上海安妮水晶设计有限公司 Composite optical glass with adamantine luster and preparation method thereof
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