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Microstereolithography (Dynamic Mask type) : |
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Dynamic mask |
In this there is Mask which is changing its shape dynamically. Mask is just like LCD in which as per section required area is kept bright & remaining is kept dark. Inherent disadvantage of this process is that we can not have higher power of LASER because it will damage mask.In this process entire section is exposed to light at a time. The remaining set-up is just like the one used in case of Scaning type. There is reasonable accuracy with this type of process than the scanning type. |
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Limitations
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Smooth 3D surfaces are difficult to produce with this as stepping effects will always be present. |
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Mass production of several components is another challenge. |
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Extremely small features(submicron components) are difficult to produce.
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Now we will see LASER based micromachining. |
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