TOF Miniature TOF image pickup lens system

The present invention relates to a miniature TOF image shooting lens system which can be used after being mounted in cellphones, tablet PCs, drones and the like. The miniature image shooting lens system of the present invention comprises in order from the side of an object: a first plastic lens havi...

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Bibliographic Details
Main Authors SEO KISEOK, KO GI BONG, JEON SO RA, BONG EUI JONG
Format Patent
LanguageEnglish
Korean
Published 30.12.2020
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Summary:The present invention relates to a miniature TOF image shooting lens system which can be used after being mounted in cellphones, tablet PCs, drones and the like. The miniature image shooting lens system of the present invention comprises in order from the side of an object: a first plastic lens having the object-side surface formed to be convex toward the side of the object and having a positive refractive power; an aperture; a second plastic lens having the center of the object-side surface formed to be convex towards the object, provided with at least one inflection point, formed to be concave toward the side, and having a positive refractive power; a third plastic lens having the object-side surface and the upper side surface formed to be upwardly convex and having a positive refractive power; and a fourth plastic lens having the object-side surface formed to be convex towards the object, provided with at least one inflection point, formed to be concave toward the side, and having a negative refractive power. Therefore, provided in the present invention is the miniature TOF image shooting lens system, wherein the plastic lens can be used to reduce costs. In addition, visible light can be blocked to embody a high-quality IR filming image. Furthermore, image taking at a wide angle is enabled even with the small size, and excellent assemblability is provided to improve productivity. 본 발명은 휴대폰, 태블릿 PC, 드론 등에 탑재되어 사용되는 소형 TOF 촬상 렌즈 시스템에 관한 것이다. 상기 소형 촬상 렌즈 시스템은, 물체 측에서부터 순서대로, 정의 굴절력을 가지고, 물체측 면이 물체 측으로 볼록하게 형성되는 제1 플라스틱 렌즈; 조리개; 정의 굴절력을 가지고, 물체측 면 중심이 물체 측으로 볼록하고 1개 이상의 변곡점을 가지고 주변으로 갈수록 오목하게 형성되는 제2 플라스틱 렌즈; 정의 굴절력을 가지고, 물체측 면과 상측 면이 상 측으로 볼록하게 형성되는 제3 플라스틱 렌즈; 부의 굴절력을 가지고, 물체측 면이 물체 측으로 볼록하고 1개 이상의 변곡점을 가지고 주변으로 갈수록 오목하게 형성되는 제4 플라스틱 렌즈; 를 포함한다. 이러한 구성에 따르면, 플라스틱 렌즈를 사용하여 비용을 절감하고, 가시광선을 차단하여 양질의 IR 촬상 영상을 구현하면서, 소형의 광각 촬영이 가능하고 조립성이 우수하여 생산성을 향상시킬 수 있는 소형 TOF 촬상 렌즈 시스템을 제공할 수 있다.
Bibliography:Application Number: KR20190073465