CN2826458Y - 光学微棱镜 - Google Patents

光学微棱镜 Download PDF

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Publication number
CN2826458Y
CN2826458Y CNU2005200741147U CN200520074114U CN2826458Y CN 2826458 Y CN2826458 Y CN 2826458Y CN U2005200741147 U CNU2005200741147 U CN U2005200741147U CN 200520074114 U CN200520074114 U CN 200520074114U CN 2826458 Y CN2826458 Y CN 2826458Y
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prism
utility
model
clean
optical
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朱光波
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Zhu Guangbo
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JIANGSU FENGETE BIO-ELECTRON Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

本实用新型涉及一种光学棱镜的结构改进。该棱镜包括透明材料制成的镜体，所述镜体为片状，一面平整光洁，另一面制有规则的细微三角形沟槽，截面呈锯齿状。本实用新型实质上将原先的三棱镜“化整为零”，由一个个细微的小三棱镜取代。这样，当物体的影像投射到微棱镜的光洁面时，将由另一面的一个个细微小三棱镜折射到所需光路上，形成与现有三棱镜相同的光学折射效果。由于本实用新型以片状结构取代了三棱柱结构，体积大大减小，因此可以使采用本实用新型的光学仪器结构十分紧凑，应用更为灵活。

Description

光学微棱镜
技术领域
本实用新型涉及一种光学元器件，尤其是一种光学棱镜的结构改进。
背景技术
棱镜的主要作用是折射成像，在各种光学仪器中应用普遍。现有棱镜基本由三棱柱状的透明材料制成，组装时占据较大空间，因此使许多光学仪器体积较大，推广应用受到限制。
发明内容
本实用新型的目的是：针对以上现有技术存在的缺点，通过对镜体结构的改进，提出一种体积小巧的光学微棱镜，从而可以减小光学仪器的空间尺寸，使其应用更为灵活便捷。
为了达到以上目的，本实用新型的光学微棱镜包括透明材料制成的镜体，其特征在于：所述镜体为片状，一面平整光洁，另一面制有规则的细微三角形沟槽，截面呈锯齿状。
可以认为，本实用新型实质上将原先的三棱镜“化整为零”，由一个个细微的小三棱镜取代。这样，当物体的影像投射到微棱镜的光洁面时，将由另一面的一个个细微小三棱镜折射到所需光路上，形成与现有三棱镜相同的光学折射效果。尤其是，当细微三角形沟槽的间隔尺寸达到纳米级时，本实用新型可以获得与现有棱镜相同的成像清晰度。
由于本实用新型以片状结构取代了三棱柱结构，体积大大减小，因此可以使采用本实用新型的光学仪器结构十分紧凑，应用更为灵活。
附图说明
下面结合附图对本实用新型作进一步的说明。
图1为本实用新型一个实施例的结构示意图。
图2为图1的剖面结构示意图。
具体实施方式
实施例一
本实施例为一种应用于指纹识别器中的光学微棱镜如图1所示，多边形的片状镜体由透明有机玻璃制成，中部的椭圆处一面平整光洁，另一面制有规则的细微等腰三角形沟槽。其截面如图2所示，呈锯齿状，形成一个个细微的小三棱镜。小三棱镜的高度B和宽度A(等于三角形沟槽的深度和间距)均在10-100纳米范围，顶角为110°。
当将手指揿压在光洁椭圆面上时，将由另一面的一个个细微小三棱镜折射到所需光路上，实现指纹成像。由于三角形沟槽的尺寸达到纳米级，因此十分精细，光学折射成像效果与现有棱镜一样清晰，而其体积却大大减小。
除上述实施例外，本实用新型还可以有其他实施方式。凡采用等同替换或等效变换形成的技术方案，均落在本实用新型要求的保护范围。

Claims (3)

1.一种光学微棱镜，包括透明材料制成的镜体，其特征在于：所述镜体为片状，一面平整光洁，另一面制有规则的细微三角形沟槽，截面呈锯齿状。
2、如权利要求1所述的光学微棱镜，其特征在于：所述三角形沟槽的间隔尺寸为纳米级。
3、如权利要求2所述的光学微棱镜，其特征在于：所述三角形沟槽为等腰三角形沟槽，其深度和间距在10-100纳米范围，顶角为110°。
CNU2005200741147U 2005-08-02 2005-08-02 光学微棱镜 Expired - Fee Related CN2826458Y (zh)

Priority Applications (1)

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CNU2005200741147U CN2826458Y (zh) 2005-08-02 2005-08-02 光学微棱镜

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CNU2005200741147U CN2826458Y (zh) 2005-08-02 2005-08-02 光学微棱镜

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CN2826458Y true CN2826458Y (zh) 2006-10-11

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106767468A (zh) * 2016-12-29 2017-05-31 贵州虹轴轴承有限公司 一种轴承套圈外壁精度检测装置
CN106839978A (zh) * 2016-12-29 2017-06-13 贵州虹轴轴承有限公司 一种轴承套圈外壁加工精度检测装置
WO2018107881A1 (zh) * 2016-12-12 2018-06-21 华为技术有限公司 环境光检测系统

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018107881A1 (zh) * 2016-12-12 2018-06-21 华为技术有限公司 环境光检测系统
CN106767468A (zh) * 2016-12-29 2017-05-31 贵州虹轴轴承有限公司 一种轴承套圈外壁精度检测装置
CN106839978A (zh) * 2016-12-29 2017-06-13 贵州虹轴轴承有限公司 一种轴承套圈外壁加工精度检测装置
CN106767468B (zh) * 2016-12-29 2019-03-01 贵州虹轴轴承有限公司 一种轴承套圈外壁精度检测装置
CN106839978B (zh) * 2016-12-29 2019-04-19 贵州虹轴轴承有限公司 一种轴承套圈外壁加工精度检测装置

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GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: ZHU GUANGBO

Free format text: FORMER OWNER: JIANGSU FENGETE BIO-ELECTRON CO., LTD.

Effective date: 20070921

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Effective date of registration: 20070921

Address after: 212310 Jiangsu Province, Danyang City Economic Development Zone Industrial Park, Danyang Fengtai Danya photoelectric Co. Ltd.

Patentee after: Zhu Guangbo

Address before: 212310 Zhenjiang City, Jiangsu province Danyang Development Zone 122 provincial highway toll station

Patentee before: Jiangsu Fengete Bio-Electron Co., Ltd.

C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee