Optical element unit and optical apparatus
First Claim
1. A filter unit configured to be insertable into and removable from an opening portion provided in an adaptor, wherein the adaptor is detachable with a lens apparatus and an image pickup apparatus, the filter unit comprising:
- a first filter;
a holding member configured to hold the first filter; and
a lock piece having a lock piece claw;
wherein the opening portion has a first portion with a first inner diameter and a second portion with a second inner diameter smaller than the first inner diameter,wherein the holding member includes a third portion with a first outer diameter and a fourth portion with a second outer diameter smaller than the first outer diameter,wherein a fourth portion includes a tapered surface inclined to a normal line direction of a first surface of the first filter,wherein, in a case where the filter unit is inserted into the opening portion with the first surface facing toward a first side in an optical axis direction, the third portion faces the first portion, the fourth portion faces the second portion, and the lock piece claw engages with a lock piece end formed on a part of the opening portion facing the first portion in the optical axis direction, so that the filter unit is attached to the adaptor, andwherein, in a case where the filter unit is inserted into the opening portion with the first surface facing toward a second side opposite to the first side, the third portion contacts the second portion, so that the filter unit is not attached to the adaptor.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical element unit is insertable into and removable from an opening portion provided in an optical apparatus and a first portion with a first inner diameter and a second portion with a second inner diameter smaller than the first inner diameter are disposed inside of the opening portion. The optical element unit has a third portion with a first outer diameter and a fourth portion with a second outer diameter smaller than the first outer diameter, wherein the first outer diameter is greater than the second inner diameter. Therefore, when the optical element unit is inserted into the opening portion in a reverse way, the third portion contacts with the second portion so that the optical element cannot be fully inserted into the opening portion.
6 Citations
33 Claims
-
1. A filter unit configured to be insertable into and removable from an opening portion provided in an adaptor, wherein the adaptor is detachable with a lens apparatus and an image pickup apparatus, the filter unit comprising:
-
a first filter; a holding member configured to hold the first filter; and a lock piece having a lock piece claw; wherein the opening portion has a first portion with a first inner diameter and a second portion with a second inner diameter smaller than the first inner diameter, wherein the holding member includes a third portion with a first outer diameter and a fourth portion with a second outer diameter smaller than the first outer diameter, wherein a fourth portion includes a tapered surface inclined to a normal line direction of a first surface of the first filter, wherein, in a case where the filter unit is inserted into the opening portion with the first surface facing toward a first side in an optical axis direction, the third portion faces the first portion, the fourth portion faces the second portion, and the lock piece claw engages with a lock piece end formed on a part of the opening portion facing the first portion in the optical axis direction, so that the filter unit is attached to the adaptor, and wherein, in a case where the filter unit is inserted into the opening portion with the first surface facing toward a second side opposite to the first side, the third portion contacts the second portion, so that the filter unit is not attached to the adaptor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
-
32. An adaptor detachable with a lens apparatus and an image pickup apparatus comprising:
-
an opening portion which a filter unit is insertable into and removable from, wherein the filter unit includes a first filter, a holding member configured to hold the first filter, and a lock piece having a lock piece claw; wherein the opening portion has a first portion with a first inner diameter and a second portion with a second inner diameter smaller than the first inner diameter, wherein the holding member includes a third portion with a first outer diameter and a fourth portion with a second outer diameter smaller than the first outer diameter, wherein the fourth portion includes a tapered surface inclined to a normal line direction of a first surface of the first filter, wherein, in a case where the filter unit is inserted into the opening portion with the first surface facing toward a first side in an optical axis direction, the third portion faces the first portion, the fourth portion faces the second portion, and the lock piece claw engages with a lock piece end formed on a part of the opening portion facing the first portion in the optical axis direction, so that the filter unit is attached to the adaptor, and wherein, in a case where the filter unit is inserted into the opening portion with the first surface facing toward a second side opposite to the first side, the third portion contacts the second portion, so that the filter unit is not attached to the adaptor.
-
-
33. An optical apparatus comprising;
-
an adaptor detachable with a lens apparatus and an image pickup apparatus, wherein the adaptor has an opening portion including a first portion with a first inner diameter and a second portion with a second inner diameter smaller than the first inner diameter; and a filter unit insertable into and removable from the opening portion;
wherein the filter unit includes a first filter, a holding member configured to hold the first filter, and a lock piece having a lock piece claw,wherein the holding member includes a third portion with a first outer diameter and a fourth portion with a second outer diameter smaller than the first outer diameter, wherein the fourth portion includes a tapered surface inclined to a normal line direction of a first surface of the first filter, wherein, in a case where the filter unit is inserted into the opening portion with the first surface facing toward a first side in an optical axis direction, the third portion faces the first portion, the fourth portion faces the second portion, and the lock piece claw engages with a lock piece end formed on a part of the opening portion facing the first portion in the optical axis direction, so that the filter unit is attached to the adaptor, and wherein, in a case where the filter unit is inserted into the opening portion with the first surface facing toward a second side opposite to the first side, the third portion contacts the second portion, so that the filter unit is not attached to the adaptor.
-
Specification