CN-122018108-A - Lens apparatus

Abstract

The lens apparatus includes a lens disposed closest to an object, a holder holding the lens, a cover having a first opening exposing the lens when viewed from an optical axis direction of the lens and positioned in the optical axis direction together with the holder, and an exterior member having a second opening engaged with an outer diameter of the cover. A first gap formed between the holder and the cover in a diameter direction orthogonal to the optical axis direction is larger than a second gap formed between the exterior member and the cover in the diameter direction.

Inventors

• NODA TOYOHITO
• MURAKAMI TARO
• Nitto
• UEHARA TAKUMI
• ITO DAISUKE

Assignees

• 佳能株式会社

Dates

Publication Date

20260512

Application Date

20220609

Priority Date

20210611

Claims (17)

1. 1. A lens apparatus, comprising: an interface for mounting the lens apparatus to an imaging apparatus, and A circuit board configured to communicate with the imaging device, Wherein, the The lens has a first lens included in a first optical system and a second lens included in a second optical system, Each of the first optical system and the second optical system is a curved optical system having a first reflecting surface and a second reflecting surface, and includes, in order from the object side, a first optical axis, a second optical axis of light reflected by the first reflecting surface, and a third optical axis of light reflected by the second reflecting surface, and At least a part of the electrical components provided on the circuit board is disposed inside the diameter of the interface when viewed from the axis direction of the interface.
2. 2. The lens apparatus according to claim 1, wherein a diameter of the interface is a fitting diameter with respect to the imaging apparatus.
3. 3. The lens apparatus according to claim 1, wherein the circuit board is arranged between the two first optical axes when viewed from a direction orthogonal to each of a distance direction between the two first optical axes of the first optical system and the second optical system and a first optical axis direction.
4. 4. The lens apparatus according to claim 1, wherein the circuit board is disposed on an extension line of the third optical axis.
5. 5. The lens apparatus according to claim 1, wherein a substrate surface of the circuit board is perpendicular to an axial direction of the interface.
6. 6. The lens apparatus according to claim 1, wherein a substrate surface of the circuit board is parallel to each of a first optical axis direction and a distance direction between the two first optical axes of the first optical system and the second optical system.
7. 7. The lens apparatus of claim 1, further comprising a base member mounting the first optical system, the second optical system, and the circuit board, Wherein the first optical system, the second optical system, and the circuit board are integrally movable with the base member in a first optical axis direction with respect to the interface.
8. 8. The lens apparatus of claim 7, wherein, The circuit board includes a fixing portion at which the circuit board is fixed to the base member, and The fixing portion is configured not to overlap with the lens and the holder in each of the first optical system and the second optical system when viewed from an axial direction of the interface.
9. 9. The lens apparatus of claim 1, further comprising a first flexible substrate, wherein, The interface is provided with a communication unit configured to communicate with the image forming apparatus, The circuit board is provided with a first connector, and The first flexible substrate electrically interconnects the communication unit and the first connector and extends in an axial direction of the interface.
10. 10. The lens apparatus of claim 9, further comprising a base member mounting the first optical system, the second optical system, and the circuit board, Wherein the first flexible substrate passes through a through hole formed on the base member.
11. 11. The lens apparatus of claim 9, further comprising: an electronic component controlled by the circuit board, and A second flexible substrate electrically connected to the electronic component, Wherein, the The circuit board includes a second connector connected to the second flexible substrate, and The second connectors are point symmetrically configured about an axis of the interface.
12. 12. The lens apparatus according to claim 11, wherein the first connector and the second connector are configured not to overlap with the lens and the holder in each of the first optical system and the second optical system when viewed from an axial direction of the interface.
13. 13. The lens apparatus according to claim 1, wherein the circuit board includes a region overlapping with the lens or an optical member forming the second optical axis in each of the first optical system and the second optical system when viewed from a first optical axis direction or a direction orthogonal to each of a distance direction between the two first optical axes of the first optical system and the second optical system and the first optical axis direction.
14. 14. The lens apparatus according to claim 1, wherein a substrate surface of the circuit board is rectangular in shape.
15. 15. A lens apparatus, comprising: an interface for mounting the lens apparatus to an imaging apparatus, and A circuit board configured to communicate with the imaging device, Wherein, the The lens has a first lens included in a first optical system and a second lens included in a second optical system, Each of the first optical system and the second optical system is a curved optical system having a first reflecting surface and a second reflecting surface, and includes, in order from the object side, a first optical axis, a second optical axis of light reflected by the first reflecting surface, and a third optical axis of light reflected by the second reflecting surface, and The circuit board is positioned between the two first optical axes of the first optical system and the second optical system, and is arranged on the subject side of the second optical axis and the axis of the interface.
16. 16. An image forming apparatus, comprising: imaging sensor, and The lens apparatus according to claim 1 or 15.
17. 17. The imaging apparatus according to claim 16, wherein the imaging sensor simultaneously captures two images with parallax formed by the first optical system and the second optical system.

Description

Lens apparatus The application is a divisional application of an application patent application with the application number 202210651474.7 and the application date 2022, 6, 9 and the application name of 'lens equipment'. Technical Field The present disclosure relates to a lens apparatus. Background Interchangeable lenses for stereoscopic photography have conventionally been known as an application of one of the interchangeable lens systems. Japanese patent application laid-open No. 2012-3022 discloses a lens which includes two optical systems arranged in parallel and images two image circles in parallel on a single image sensor. When viewed with VR eyepieces, it is desirable that the viewing angle of the moving or still image be 180 degrees or more in order to obtain not only a three-dimensional effect but also an in-field effect. In view of manufacturing errors and the like, in order to provide an image having a viewing angle of at least 180 degrees, it is desirable that the imaging lens can take an image at a viewing angle of more than 180 degrees. However, the lens disclosed in japanese patent application laid-open No. 2012-3022 cannot take an image at a viewing angle of more than 180 degrees. In order to take an image at a view angle of more than 180 degrees, it is necessary to place the exterior member on the imaging plane side of the vertex of the front side lens so that the exterior member does not shade the light beam incident on the front side lens by 180 degrees or more, and an opening into which two lenses can be inserted is provided in the exterior member. In this case, when the position of the lens is shifted, the gap between the opening and the lens becomes uneven, which may deteriorate the appearance quality. In addition, in the case where the drip-preventing structure is provided, the unevenness of the gap adversely affects the dustproof drip-preventing performance. If the opening and the lens are diametrically engaged with each other so that the gap does not become uneven, the positional shift of the lens is corrected, which adversely affects the optical performance and the relative relationship between the two optical systems. Disclosure of Invention The present disclosure provides a lens apparatus capable of maintaining appearance quality, realizing dustproof and drip-proof performance and optical performance, and performing stereoscopic imaging at a viewing angle of more than 180 degrees. A lens apparatus according to one aspect of the present invention includes a lens disposed closest to an object, a holder holding the lens, a cover having a first opening exposing the lens when viewed from an optical axis direction of the lens and positioned in the optical axis direction together with the holder, and an exterior member having a second opening engaged with an outer diameter of the cover. A first gap formed between the holder and the cover in a diameter direction orthogonal to the optical axis direction is larger than a second gap formed between the exterior member and the cover in the diameter direction. Other features of the present invention will become apparent from the following description of exemplary embodiments with reference to the accompanying drawings. Drawings Fig. 1 is a schematic configuration diagram of a camera system according to an embodiment of the present disclosure. Fig. 2 is a sectional view of the lens apparatus. Fig. 3 is an exploded perspective view of the lens apparatus as seen from the object side. Fig. 4 is an exploded perspective view of the lens apparatus as seen from the imaging plane side. Fig. 5 is a front view of the lens apparatus. Fig. 6 is a sectional view taken along line A-A in fig. 5. Fig. 7 shows a modification of the lens apparatus. Fig. 8 is a sectional view taken along line B-B of fig. 5. Fig. 9 shows a positional relationship between each optical axis and an image circle on the image sensor. Fig. 10 shows a reflection of the left-eye optical system in the case where an image is taken by the right-eye optical system. Fig. 11 is an external perspective view of a lens cap mounted to the lens apparatus. Fig. 12 is an external perspective view of the lens cap when mounted to the lens apparatus. Fig. 13 is an external perspective view of the lens cap when detached from the lens apparatus. Fig. 14 is an exploded perspective view of the lens cap. Fig. 15 is a sectional view of the lens cap and the first lens when the lens cap is mounted. Fig. 16 is a side view of the slider and the first lens with the lens cap mounted. Fig. 17 is a top view of the slider and the first lens with the lens cap mounted. Fig. 18 is a sectional view of a lens cap and a first lens when the lens cap according to another example is mounted. Fig. 19 is an external perspective view of the lens apparatus. Fig. 20 is an external side view of the lens apparatus. Fig. 21 is an external bottom view of the lens apparatus. Fig. 22 is a front view of the lens apparatus in a state where