Preparation method of optical glass element and optical glass element with light absorption layer
A technology of optical glass and light-absorbing layer, which is applied in the preparation of optical glass components and the field of optical glass components, can solve the problems of optical glass crosstalk and limited types of optical glass, etc., and achieve the effect of reducing optical crosstalk and preventing interface reflection
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[0029] Such as figure 1 As shown, an embodiment of the present invention proposes a method for preparing an optical glass element, which specifically includes the following steps:
[0030] Step S1, preparing optical glass, which contains 0.01-30 mol% doped metal ions; to realize step S1, it is necessary to introduce doped metal ions into the glass batch when preparing the optical glass. Then the optical glass is melted through processes such as feeding, clarification, homogenization, and pouring.
[0031] In step S1, the present application does not limit the type and form of the doped metal ions, as long as it is easily reduced by the reducing gas to form a light absorption center during the later reduction treatment, the preparation method can be realized. The doped metal ions are introduced in the form of simple substances, oxides, hydroxides, salts or organic substances, and the doped metal ions include but are not limited to scandium ions, zinc ions, cadmium ions, galliu...
Embodiment 1
[0057] A preparation method for an optical glass element, specifically comprising the following steps:
[0058] (1) add the CdO of 0.5mol% in the K9 glass component listed in table 1;
[0059] (2) in the glass component that step (1) obtains, add the SiO of 6mol% 2 , to correct the optical parameters of the glass to obtain the adjusted K9 glass composition as listed in Table 2;
[0060] (3) Put the adjusted K9 glass component into the reduction furnace, evacuate, heat up to 600°C, and pass high-purity H 2 , under a pressure of 0.2MPa, keep warm for 50h, then vacuumize, cool down to 550°C, keep warm for 3h, then cool down to room temperature, to obtain K9 glass 1 with a light-absorbing layer. After inspection, the light absorption rate of the light absorption layer on the K9 glass 1 reaches 99.8%.
Embodiment 2
[0062] (1) add the SnO of 0.5mol% in the K9 glass component listed in table 1;
[0063] (2) in the glass component that step (1) obtains, add the SiO of 7mol% 2 , to correct the optical parameters of the glass to obtain the adjusted K9 glass composition as listed in Table 3;
[0064] (3) Put the adjusted K9 glass component into the reduction furnace, vacuumize, raise the temperature to 700°C, introduce high-purity CO, keep it warm for 20h under a pressure of 0.5MPa, then pull the vacuum, lower the temperature to 500°C, and keep it warm After 2 hours, the temperature was lowered to room temperature to obtain K9 glass 2 with a light-absorbing layer. After inspection, the light absorption rate of the light absorption layer on the K9 glass 2 reaches 99.6%.
[0065] Table 1 K9 glass composition
[0066] oxide composition SiO 2
B 2 o 3
BaO Na 2 o
K 2 o
As 2 o 3
Molar content 73.7％ 9.9％ 1.3％ 10.7％ 4.3％ 0.1％
[0067] Tab...
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