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含晃動補償的光學對焦裝置
TWI721735B
Taiwan
Description
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Claims (8)
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- 一種含晃動補償的光學對焦裝置,包含:一鏡頭組件,由一光學鏡頭與固定該光學鏡頭的一鏡頭載座所構成;一菱鏡組,由複數個單體菱鏡,複數個單體菱鏡在擺放位置上可構成至少光線二次折射,使得一入射光被轉換方向成不同方向的一反射光,該反射光將穿過該光學鏡頭,而投射在一感光元件上,在複數個單體菱鏡中第一個接受該入射光者被定義為第一單體菱鏡;以及一菱鏡組載座組件,用以固定該菱鏡組,且包含一軌道裝置,使得該菱鏡組得以在一驅動力驅使下藉著該軌道裝置在兩個軸向進行一預定距離的移動,該菱鏡組沿著兩個軸向移動時維持在同一平面上;其中,依據一晃動補償訊號,調整該驅動力,使得該菱鏡組產生位移,導致該入射光射向該第一單體菱鏡時產生一補償偏移,同時相對的該反射光投射在該感光元件上時也產生相對於該補償偏移的偏移,實現晃動補償。 其中該菱鏡組沿著一第一軸向移動時,導致射向該第一單體菱鏡的該入射光產生與一第二軸向平行的該補償偏移,同時投射在該感光元件上的該反射光也產生與該第二軸向平行的該補償偏移,該第一軸向與該第二軸向在同一 平面上。
- 如申請專利範圍第1項所述之含晃動補償的光學對焦裝置,其中固定該菱鏡組的該菱鏡組載座,可與該菱鏡組為一體式結構,或分離之兩件式結構。
- 如申請專利範圍第1項所述之含晃動補償的光學對焦裝置,其中複數個單體菱鏡的數量為二,包含該第一單體菱鏡、一第二單體菱鏡,該第一單體菱鏡、該第二單體菱鏡均能大致垂直反射光線,射入該第一單體菱鏡的該入射光與被該第二單體菱鏡反射而離開的該反射光彼此大致呈現垂直,使得該入射光被轉換方向成不同方向的該反射光。
- 如申請專利範圍第1項所述之含晃動補償的光學對焦裝置,其中該菱鏡組沿著該第二軸向移動時,導致射向該第一單體菱鏡的該入射光產生與該第二軸向大致垂直的一第三軸向的該補償偏移,同時投射在該感光元件上的該反射光也產生與該第三軸向平行的該補償偏移。
- 如申請專利範圍第4項所述之含晃動補償的光學對焦裝置,其中該菱鏡組沿著該第一軸向移動、第二軸向移動可以依序進行或是同步進行。
- 如申請專利範圍第1項所述之含晃動補償的光學對焦裝 置,其中使得該菱鏡組或鏡頭載座產生位移的該驅動力可為音圈馬達、記憶合金、壓電馬達。
- 如申請專利範圍第6項所述之含晃動補償的光學對焦裝置,其中該含晃動補償的光學對焦裝置進一步包含用以安裝有一鏡頭組件、一菱鏡組載座組件的一底座,該音圈馬達由固定於該底座上複數個導磁片、固定於該菱鏡組載座組件的一磁石所組成,該磁石與該導磁片之間彼此存在有一吸引力,使得該菱鏡組載座組件被吸引貼附在該底座之上,該驅動力需大於該吸引力才得以讓該菱鏡組載座組件進行該預定距離的移動。
- 如申請專利範圍第1項所述之含晃動補償的光學對焦裝置,其中可供該菱鏡組在兩個軸向進行該預定距離的該軌道裝置中的一移動介質可為複數個圓桿、複數個圓球、或單一圓桿搭配單一圓球或複數個圓球,其中該圓桿或圓球可為金屬或非金屬材質。