Camera module, optical device, and method for manufacturing camera module

A technology of camera module and optical system, applied in the direction of camera body, optics, camera, etc.

Active Publication Date: 2020-11-27
NIKON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in Patent Document 1, there is a problem that further improvement in optical performance is desired.

Method used

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  • Camera module, optical device, and method for manufacturing camera module
  • Camera module, optical device, and method for manufacturing camera module
  • Camera module, optical device, and method for manufacturing camera module

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Embodiment

[0092] Hereinafter, each embodiment of this application is demonstrated based on drawing. also, Figure 11 It is a sectional view of the unit optical system UL constituting the camera module 1 of each embodiment.

no. 1 Embodiment

[0094] In the first embodiment, when the unit optical system UL is configured by a compact Schmidt-Cassegrain method, the camera module 1 has a focal length of 500 mm in conversion to a 35 mm camera. In addition, the imaging element 14 is a 2-megapixel, 1 / 6-inch imaging element, and its size is 2.4 mm×1.8 mm.

[0095] Table 4 below shows the parameters of the unit optical system UL in the first embodiment. Here, f 1 Indicates the focal length of the primary reflector 12, r 1 Indicates the radius of curvature of the main reflector 12, f 2 Indicates the focal length of the secondary reflector 13, r 2 Represents the radius of curvature of the sub-reflector 13, f represents the focal length of the entire system, R represents the distance on the optical axis from the sub-reflector 13 to the main reflector 12, and D represents the distance from the most object-side surface of the correction plate 11 to The distance on the optical axis up to the main mirror 12, TL indicates the d...

no. 2 Embodiment

[0113] In the second embodiment, the unit optical system UL is configured by the compact Schmidt-Cassegrain method, and the camera module 1 has a focal length of 300 mm when converted to a 35 mm camera. In addition, like the first embodiment, the imaging element 14 is a 2-megapixel, 1 / 6-inch imaging element, and its size is 2.4 mm×1.8 mm.

[0114] Table 6 below shows parameters of the unit optical system UL of the second embodiment.

[0115] (Table 6) Second Embodiment - Unit Optical System UL

[0116] f 1 =3.67

[0117] r 1 =7.34

[0118] f 2 =0.45

[0119] r 2 =0.90

[0120] f=20.6

[0121] R=3.3

[0122] D=3.6

[0123] TL=5.64

[0124] FNO=3.4

[0125] M=5.61

[0126] In addition, the following Table 7 shows the parameters of the camera module 1 constituted by the 3×3 nine unit optical systems UL described above.

[0127] (Table 7) Second Embodiment - Camera Module 1

[0128]

[0129] In this way, by making the unit optical system UL of the camera module ...

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Abstract

Provided are a high-resolution, high-optical-performance, and downsized camera module, an optical device having this camera module, and a method for manufacturing a camera module 1. The camera module1 mounted in an optical device such as a camera 60 comprises: a unit optical system UL which comprises, in order from an object side along an optical axis, a main reflector 12 serving as a first reflective member, and a subreflector 13 serving as a second reflective member, and forms an image of an object; an imaging element 14 which captures the image formed by the unit optical system UL; and a unit block 10 which comprises the unit optical system UL and the imaging element 14, the camera module having a plurality of unit blocks 10.

Description

technical field [0001] The invention relates to a camera module, an optical device and a method for manufacturing the camera module. Background technique [0002] Conventionally, a camera module that realizes high resolution by including a plurality of camera modules has been proposed (for example, refer to Patent Document 1). However, in Patent Document 1, there is a problem that further improvement in optical performance is desired. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2005-051318 Contents of the invention [0006] The camera module according to the first aspect of the present invention includes: a unit optical system having a first reflection member and a second reflection member in order from the object side along the optical axis to form an image of the object; The image formed by the system is photographed; and the unit block has a unit optical system and a photographing element, and the...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G02B17/08G03B17/02G03B19/07H04N5/225H04N5/232
CPCG03B17/02G03B19/07G02B17/0808H04N23/55H04N23/60G02B17/08
Inventor岩根透
OwnerNIKON CORP