Optical unit, imaging apparatus, and movable object
First Claim
1. An optical unit comprising:
- an optical system including a plurality of optical elements;
a lens barrel having an object side opening smaller than an outermost periphery of an optical element closest to an object side in the optical system and an imaging side opening equal to or larger than an outermost periphery of an optical element closest to an imaging side in the optical system, the lens barrel for accommodating the optical system; and
a securing portion for securing, at the imaging side opening, the optical system inserted from the imaging side opening and accommodated in the lens barrel,wherein the lens barrel is formed such that, in a state accommodating the optical system, an end of the lens barrel on the object side does not protrude from any portion of an optical curved surface of the optical element closest to the object side in the optical system, and the optical curved surface is free from overlap with the lens barrel in an object side direction extending from the imaging side to the object side, andthe optical element closest to the object side comprises a flange portion extending outward in a radial direction from a body of the optical element closest to the object side to contact a locking portion of the lens barrel, the flange portion is formed on a first side of the optical element closest to the object side, the first side is opposite a second side of the optical element closest to the object side, and the second side includes the optical curved surface.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical unit (13) includes an optical system (16), a lens barrel (15), and a securing portion (21). The optical system (16) includes a plurality of optical elements (22 to 26). The lens barrel (15) has an object side opening smaller than an outermost periphery of the optical element (22) closest to an object side in the optical system (16). The lens barrel (15) has an imaging side opening equal to or larger than an outermost periphery of the optical element (26) closest to an imaging side in the optical system (16). The lens barrel (15) accommodates the optical system (16). The securing portion (21), at the imaging side opening, secures the optical system (16) inserted from the imaging side opening and accommodated in the lens barrel (15).
12 Citations
11 Claims
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1. An optical unit comprising:
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an optical system including a plurality of optical elements; a lens barrel having an object side opening smaller than an outermost periphery of an optical element closest to an object side in the optical system and an imaging side opening equal to or larger than an outermost periphery of an optical element closest to an imaging side in the optical system, the lens barrel for accommodating the optical system; and a securing portion for securing, at the imaging side opening, the optical system inserted from the imaging side opening and accommodated in the lens barrel, wherein the lens barrel is formed such that, in a state accommodating the optical system, an end of the lens barrel on the object side does not protrude from any portion of an optical curved surface of the optical element closest to the object side in the optical system, and the optical curved surface is free from overlap with the lens barrel in an object side direction extending from the imaging side to the object side, and the optical element closest to the object side comprises a flange portion extending outward in a radial direction from a body of the optical element closest to the object side to contact a locking portion of the lens barrel, the flange portion is formed on a first side of the optical element closest to the object side, the first side is opposite a second side of the optical element closest to the object side, and the second side includes the optical curved surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An optical unit comprising:
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an optical system including a plurality of optical elements; a lens barrel having an object side opening smaller than an outermost periphery of an optical element closest to an object side in the optical system and an imaging side opening equal to or larger than an outermost periphery of an optical element closest to an imaging side in the optical system, the lens barrel for accommodating the optical system; a securing portion for securing, at the imaging side opening, the optical system inserted from the imaging side opening and accommodated in the lens barrel; and an O-ring provided to make contact with the outermost periphery of the optical element closest to the object side, wherein the lens barrel is formed such that, in a state accommodating the optical system, an end of the lens barrel on the object side does not protrude from any portion of an optical curved surface of the optical element closest to the object side in the optical system, and the optical curved surface is free from overlap with the lens barrel in an object side direction extending from the imaging side to the object side, and the O-ring makes contact with the outermost periphery of the optical element closest to the object side and with two surfaces of the lens barrel.
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Specification