CN1754850A - Optical glass NLaSF016 without arsenic, lead, cadmium and lanthanide series - Google Patents

Optical glass NLaSF016 without arsenic, lead, cadmium and lanthanide series Download PDF

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Publication number
CN1754850A
CN1754850A CN 200410066887 CN200410066887A CN1754850A CN 1754850 A CN1754850 A CN 1754850A CN 200410066887 CN200410066887 CN 200410066887 CN 200410066887 A CN200410066887 A CN 200410066887A CN 1754850 A CN1754850 A CN 1754850A
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CN
China
Prior art keywords
arsenic
cadmium
glass
lanthanide
optical glass
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.)
Pending
Application number
CN 200410066887
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Chinese (zh)
Inventor
王佩珍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XINHU GLASS WORKS SHANGHAI
Original Assignee
XINHU GLASS WORKS SHANGHAI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by XINHU GLASS WORKS SHANGHAI filed Critical XINHU GLASS WORKS SHANGHAI
Priority to CN 200410066887 priority Critical patent/CN1754850A/en
Publication of CN1754850A publication Critical patent/CN1754850A/en
Pending legal-status Critical Current

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Classifications

    • 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

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

The invention discloses an As-free, Pb-free and Cd-free lanthanide optical glass (NLaSFO16), whose components include (by weight percent): SiO2: 1.5-3.4, B2O3: 29.5-33.0, La2O3: 42.0-44.20, Nb2O5: 1.0-2.5, ZrO2: 6.1-8.0, Y2O3: 10.5-12.5, WO3: 0.7-2.1, BaO: 1.7-3.2. By removing As2O3, a novel environmentally friendly optical glass can be obtained. By charging right amount of Nb2O5, the recrystallization performance can be improved.

Description

No arsenic, unleaded, no cadmium and lanthanide opticglass NLaSF016
Affiliated technical field
The present invention is trade mark in the big class of heavy-lanthanide flint glass, is the lanthanide optical glass that is used to make high-refractivity and low-dispersions such as advanced camera and senior precision instrument.
Background technology
At present, be used to make the lanthanide optical glass of high-refractivity and low-dispersions such as advanced camera and senior precision instrument.The LaSF that adopts 016Component is SiO 2, B 2O 3, La 2O 3, Nb 2O 5, ZrO 2, Y 2O 3, ZnO, Ta 2O 5, As 2O 3
Because existing LaSF 016Component contains As 2O 3, opticglass just pollutes the environment.
Summary of the invention
The object of the present invention is to provide a kind of pollution-free, and optical constant, crystallization property, the heavy-lanthanide flint glass of a kind of high-refractivity and low-dispersion that processability is good.
Content of the present invention is: high-refractivity and low-dispersion lanthanide optical glass (NLaSF 016) by weight percentage the amount component be SiO 2-1.5-3.4, B 2O 3-29.5-33.0, La 2O 3-42.0-44.20, Nb 2O 5-1.0-2.5, ZrO 2-6.1-8.0, Y 2O 3-10.5-12.5, WO 3-0.7-2.1, BaO-1.7-3.2.
Chemical symbol explanation: SiO 2Silicon oxide, B 2O 3Boron oxide, La 2O 3Lanthanum trioxide, Nb 2O 5Niobium oxides ZrO 2Zirconium white, Y 2O 3Yttrium oxide, WO 3Tungsten oxide 99.999, BaO barium oxide, ZnO zinc oxide, Ta 2O 5Tantalum oxide, As 2O 3Arsenic oxide arsenoxide, PbO plumbous oxide, CdO Cadmium oxide.
Because the present invention has removed As 2O 3, form novel environment friendly opticglass; Increase an amount of Nb in the present invention 2O 5Can improve crystallization property, Y 2O 3Beneficial to improving crystallization property; Do not contain Ta in the above-mentioned prescription 2O 5, reduced raw materials cost.
Embodiment
The present invention is further described with embodiment below.
Embodiments of the invention, processing parameter, performance perameter such as following table are listed:
Component Technical parameter Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
SiO 2 (weight part) 1.56 2.63 2.60 2.61 2.37
B 2O 3 (weight part) 30.55 30.48 30.28 30.26 30.35
La 2O 3 (weight part) 44.20 44.19 43.41 43.87 43.40
Y 2O 3 (weight part) 10.50 10.26 12.36 11.39 10.51
ZrO 2 (weight part) 7.65 7.00 6.95 6.95 6.90
Nb 2O 5 (weight part) 1.90 1.80 0.77 1.30 1.85
BaO (weight part) 2.52 2.53 2.51 2.51 3.52
WO 3 (weight part) 1.12 1.11 1.12 1.11 1.10
Charge temperature (℃) 1340 1340 1340 1340 1340
Glass melting temperature (℃) 1360 1360 1360 1360 1360
Tapping temperature ℃ (300CC moulding) 1260 1260 1260 1260 1260
Annealing temperature (℃) 650 650 650 650 650
nd 1.7730 1.7723 1.7731 1.7746 1.7721
vd 49.50 49.03 49.59 49.15 49.71
The no arsenic, unleaded, the no cadmium and lanthanide glass NLaSF that adopt above-mentioned prescription to make 16The time, earlier each component is mixed, at 1340 ~ 1370 ℃ of platinum list crucible ovens, come out of the stove for 1260 ℃, found into glass with the molybdenum bar heating.Adopt pull-rod technology then, pull into the garden rod, bulk, by the guipure black annealing, quick-fried one-tenth desired length rises to 630 ~ 680 ℃ gradually with this glass stove of advancing and retreat again, be incubated 10 ~ 20 hours with above-mentioned formed glass, progressively lowers the temperature with reducing to room temperature in 8 ~ 10 days.Record nd:1.77250 ± 7 * 10 after the cooling -4, vd:49.61 ± 0.7%, bubble, striped index meet the requirements of glass.
Above-mentioned example manufacturing process program of the present invention is basic identical, just select formula constituent slightly different (to adjust optical property etc.), above example is all founded in 300CC platinum crucible molybdenum torch electric furnace, pouring technology is adopted in moulding, annealing is carried out in nichrome wire heating anneal stove, annealing process is protected 4H for 650 ℃, with dropped in 10/ hour 550 ℃ then 20 ℃/hour reduce to 350 ℃, powered-down, be chilled to room temperature, the sight glass inner quality is got sample again and is carried out specific refractory power (nd), and chromatic dispersion (nF-nc) is measured.This trade mark has dropped into 50 liter capacity platinum crucibles at present, and molybdenum bar adds melting in the electrothermal stove, drops into and produces in batches.

Claims (2)

1, a kind of no arsenic, unleaded, no cadmium and lanthanide opticglass (NLaSF 016), it is characterized in that the component of measuring by weight percentage is SiO 2-1.5-3.4, B 2O 3-29.5-33.0, La 2O 3-42.0-44.20, Nb 2O 5-1.0-2.5, ZrO 2-6.1-8.0, Y 2O 3-10.5-12.5, WO 3-0.7-2.1, BaO-1.7-3.2.
2, a kind of no arsenic, unleaded, no cadmium and lanthanide opticglass (NLaSF 016) complete processing: earlier each component is mixed, at 1340 ~ 1370 ℃ of platinum list crucible ovens, come out of the stove for 1260 ℃, found into glass with the molybdenum bar heating, adopt pull-rod technology then, pull into the garden rod, bulk is passed through the guipure black annealing with above-mentioned formed glass, quick-fried one-tenth desired length, this glass stove of advancing and retreat is again risen to 630 ~ 680 ℃ gradually, be incubated 10 ~ 20 hours, progressively cooling is with reducing to room temperature in 8 ~ 10 days.
CN 200410066887 2004-09-29 2004-09-29 Optical glass NLaSF016 without arsenic, lead, cadmium and lanthanide series Pending CN1754850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200410066887 CN1754850A (en) 2004-09-29 2004-09-29 Optical glass NLaSF016 without arsenic, lead, cadmium and lanthanide series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200410066887 CN1754850A (en) 2004-09-29 2004-09-29 Optical glass NLaSF016 without arsenic, lead, cadmium and lanthanide series

Publications (1)

Publication Number Publication Date
CN1754850A true CN1754850A (en) 2006-04-05

Family

ID=36688446

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200410066887 Pending CN1754850A (en) 2004-09-29 2004-09-29 Optical glass NLaSF016 without arsenic, lead, cadmium and lanthanide series

Country Status (1)

Country Link
CN (1) CN1754850A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106927676A (en) * 2017-02-22 2017-07-07 中国科学院上海光学精密机械研究所 The flint optical glass with heavy lanthanum of high-refractivity and low-dispersion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106927676A (en) * 2017-02-22 2017-07-07 中国科学院上海光学精密机械研究所 The flint optical glass with heavy lanthanum of high-refractivity and low-dispersion
CN106927676B (en) * 2017-02-22 2019-03-08 中国科学院上海光学精密机械研究所 The flint optical glass with heavy lanthanum of high-refractivity and low-dispersion

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Open date: 20060405