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Optical assembly and image sensing apparatus with said assembly

A technology of optical components and optical components, applied in the direction of optical components, optics, installation, etc., to achieve the effect of suppressing light beams and avoiding influences

Inactive Publication Date: 2005-05-04
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, how to hold and join these optical components so that the mutual positional relationship is maintained at a prescribed relationship, how to avoid unnecessary light beams and their influence, how to ensure ease of manufacture, and what kind of structure to form so that they are not easily affected by dust, etc. The technical problems in the specific realization of the product and the technologies related to their solutions may not necessarily propose specific solutions

Method used

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  • Optical assembly and image sensing apparatus with said assembly
  • Optical assembly and image sensing apparatus with said assembly
  • Optical assembly and image sensing apparatus with said assembly

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0034] figure 1 It is a schematic configuration diagram showing the outline of the imaging device 100 to which the optical module PA according to the first embodiment of the present invention is applied. figure 1 The illustrated imaging device 100 has an imaging optical system 110, an imaging element 120, an image data generation unit 130, and the like.

[0035] The imaging optical system 110 is composed mainly of an optical assembly PA, which holds the first optical member 10 and the second optical member 20 as prisms so that both The relative position maintains the prescribed relationship. In addition, 111, 112 are glass covers. At least one of them may be an IR cut filter having an infrared cut function. Furthermore, the positioning holding member 30 has a functional part as a diaphragm. The optical unit PA will be described later.

[0036] The imaging element 120 performs photoelectric conversion on an optical image formed by the light beam emitted from the optical as...

no. 2 approach

[0053] Figure 10 (a), (b) and (c) are structural diagrams showing an optical module according to the second embodiment of the present invention, (a) is a cross-sectional view of main parts, and (b) and (c) are diagrams showing modified examples of positioning holding members. Sectional view. This second embodiment differs from the first embodiment in that a light-shielding film is formed on a predetermined portion of the outer surface of the member in order to impart a light-shielding function to the positioning holding member.

[0054] That is, if Figure 10 As shown in (a), the positioning holding member 30X of this embodiment uses a light-transmitting member as a base material, but on the one corresponding surface 31 excluding the portion where the optical variable diaphragm hole 33X is formed, bonding, coating, etc. are used. Another method forms the light-shielding film 39X. In addition, the light-shielding film such as Figure 10 As shown in (b), it may be formed on a...

no. 3 approach

[0056] Figure 11 (a) and (b) are schematic configuration diagrams of a digital camera showing the third embodiment of the present invention (application example of applying the optical module PA of the present invention to a digital camera), and (a) is a diagram showing the application of the optical module PA to a digital camera. An example of an imaging system of a camera, (b) is a diagram showing an example of applying the optical unit PA to a viewfinder system of a digital camera.

[0057] Figure 11 The digital camera 200 shown in (a) and figure 1 The illustrated imaging device 100 is the same, and has an imaging optical system 210 including an optical assembly PA, an imaging element 220, an image data generating unit 230, and the like. In addition, an image display unit 236 composed of an LCD or the like associated with the image data generating unit 230, an observation optical system 250 for monitoring an image displayed on the image display unit 236, and the like ar...

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Abstract

The invention provided an optical element assembly and an imaging apparatus which can avoid the occurrence of unnecessary luminous flux and influence thereby. The optical element assembly FA includes a 1st optical element 10, a 2nd optical element 20 and a positioning holding member 30, and the 1st optical element 10 is provided with projecting parts for fitting 15a and 15b fit to one corresponding surface 31 of the holding member 30 opposed to one emitting surface 13 at the peripheral part of an effective area 14 through which effective luminous flux passes on the emitting surface 13 side, and the 2nd optical element 20 is provided with projecting parts for fitting 26a and 26b fit to the other corresponding surface 32 of the holding member 30 opposed to one incident surface 21 at the peripheral part of an effective area 24 through which the effective luminous flux passes on the incident surface 21 side. The holding member 30 has an optical diaphragm aperture 33 permitting light to be transmitted from the one corresponding surface surface 31 to the other corresponding surface 32, and blind recessed parts for fitting 35a, 35b and 36a and 36b which can be respectively fit to the projecting parts for fitting 15a, 15b and 26a, 26b are formed on the one corresponding surfaces 31 and the other corresponding surface 32 so as to correspond to each other.

Description

technical field [0001] The present invention relates to an optical assembly composed of a combination of multiple optical components such as a prism, and an imaging device (for example, including a digital camera, a mobile phone with a camera function, a personal computer, a video camera, etc.) where the optical assembly is applied to an imaging function part Wait). Background technique [0002] In recent years, the miniaturization of imaging devices such as digital cameras, camera-equipped mobile phones, personal computers, and video cameras has been remarkably advanced. Along with the miniaturization of imaging devices, there is an increasing demand for miniaturization and thinning of the modules of the imaging function part (assembled body having an optical system as a main component) incorporated in the main bodies of these devices. [0003] Coaxial optical systems are generally used in such assemblies. The coaxial refers to an optical system in which optical component...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B13/02G02B5/04G02B7/18G02B17/08G03B13/06G03B17/17H04N5/225
Inventor 中城泰生松本和宏今井右二
Owner OLYMPUS CORP
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