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Optical lens, molding die, lens unit, and photographing device

A technology of optical lens and forming mold, which is applied in the direction of optical elements, optical elements, optics, etc., can solve problems such as influence, and achieve the effect of improving flatness and stable performance

Active Publication Date: 2016-08-17
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The burr generated on the flange may affect the mounting of the plastic lens into a holder such as a lens barrel or a frame.

Method used

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  • Optical lens, molding die, lens unit, and photographing device
  • Optical lens, molding die, lens unit, and photographing device
  • Optical lens, molding die, lens unit, and photographing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] figure 1 The structure of an example of the imaging device for demonstrating the embodiment of this invention is shown.

[0048] figure 1 The shown imaging device 1 includes: a sensor substrate 2, which is packaged with a solid-state imaging element 3 such as a charge coupled device (Charge Coupled Device, CCD) image sensor (image sensor) or a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) image sensor; And the lens unit 4 forms an image on the image receiving surface of the solid-state imaging device 3 . The imaging device 1 described above can be used as a camera mounted on a portable terminal such as a smartphone or a mobile phone.

[0049] The lens unit 4 includes a plurality of optical lenses 10 and a lens barrel 11 that accommodates these optical lenses 10 . A plurality of optical lenses 10 are stacked so that their optical axes coincide, and are accommodated in a lens barrel 11 . In the illustrated example, fitting por...

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PUM

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Abstract

Provided are: an optical lens capable of increasing the flatness of a flange part of the optical lens, and obtaining stable performance; a mold; a lens unit formed by laminating a plurality of optical lenses; and an image capture device equipped with the lens unit. The optical lens, which is formed by molding and solidifying an optical resin material using the mold, has an optical functional part, and a flange part disposed in the vicinity of the optical functional part. The flange part has a first surface and a second surface that face the optical axis direction of the optical lens. A plurality of pressed parts, which are pressed by injector pins that release the optical lens from the mold, is disposed on the first surface. A plurality of recesses is disposed on the second surface in areas facing the pressed parts in the optical axis direction of the optical lens.

Description

technical field [0001] The present invention relates to an optical lens, a molding die for the above-mentioned optical lens, a lens unit including the above-mentioned optical lens, and a photographing device. Background technique [0002] In a relatively small imaging device such as a camera mounted on a portable terminal such as a smartphone or a mobile phone, or a vehicle-mounted camera, the optical system is typically composed of a lens unit in which a plurality of optical lenses are laminated. Furthermore, plastic lenses are often used as optical lenses. [0003] Plastic lenses are manufactured by compression molding or injection molding. Specifically, a plastic lens is manufactured by molding and curing an optical resin material into a desired shape with a molding die, and pressing it with an ejector pin to release it from the mold. A plastic lens manufactured as described above generally includes an optical function portion having a refractive power, and a flange por...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B3/00B29C33/42G02B7/02G02B13/00
CPCB29C45/0025B29C45/40B29L2011/0016G02B13/0045
Inventor 井藤英周松本斉也
Owner FUJIFILM CORP