A camera module is provided, including a holder, a base, a bottom, an image sensor, and a first biasing element. The holder holds an optical lens and is disposed on the base. The bottom supports the image sensor and connects to the base via the first biasing element. The bottom and the image sensor can be moved with respect to the base by the first biasing element.

A camera module is provided, including a holder, a base, a bottom, an image sensor, and a first biasing element. The holder holds an optical lens and is disposed on the base. The bottom supports the image sensor and connects to the base via the first biasing element. The bottom and the image sensor can be moved with respect to the base by the first biasing element.

A camera module is provided, including a holder, a base, a bottom, an image sensor, and a first biasing element. The holder holds an optical lens and is disposed on the base. The bottom supports the image sensor and connects to the base via the first biasing element. The bottom and the image sensor can be moved with respect to the base by the first biasing element.

A camera module is provided, including a holder, a base, a bottom, an image sensor, and a first biasing element. The holder holds an optical lens and is disposed on the base. The bottom supports the image sensor and connects to the base via the first biasing element. The bottom and the image sensor can be moved with respect to the base by the first biasing element.

Accommodating (re-focusable) macro lens system which includes first and second individual lenses having first and second optical portions sequentially disposed along an optical axis. Change in optical-power of macro lens results from by changing the flattened area of contact between the lenses in response to force applied to the lenses axially by an external compressor operably

Accommodating (re-focusable) macro lens system which includes first and second individual lenses having first and second optical portions sequentially disposed along an optical axis. Change in optical-power of macro lens results from by changing the flattened area of contact between the lenses in response to force applied to the lenses axially by an external compressor operably

The optical apparatus includes a lens barrel, a lens held by the lens barrel, and a light emitter and an accessory attachment portion that are provided in an object-side end portion of the lens barrel so as to be located outside further than the lens in a radial direction of the lens barrel, the light emitter emitting an illumination light, the accessory attachment portion allowing detachable attachment of an accessory. The accessory attachment portion is located inside further than the light emitter in the radial direction. The lens barrel is provided with a slope surface formed so as to decrease an outer diameter of the lens barrel toward an object side end of the lens barrel.

The optical apparatus includes a lens barrel, a lens held by the lens barrel, and a light emitter and an accessory attachment portion that are provided in an object-side end portion of the lens barrel so as to be located outside further than the lens in a radial direction of the lens barrel, the light emitter emitting an illumination light, the accessory attachment portion allowing detachable attachment of an accessory. The accessory attachment portion is located inside further than the light emitter in the radial direction. The lens barrel is provided with a slope surface formed so as to decrease an outer diameter of the lens barrel toward an object side end of the lens barrel.

A lens system in the present disclosure includes: a first lens group that is moved toward an image side along an optical axis in focusing from a far-object in-focus state to a near-object in-focus state, and has positive optical power; and a second lens group that is disposed on the image side relative to the first lens group and has optical power. The lens system satisfies the following conditions (1) and (2).

0.5<|fg1/WD|<2.0  (1)

20<|fg2/f|<700  (2) where fg1 is a focal length of the first lens group, WD is a distance, on the optical axis, from an object surface to a lens surface located closest to an object side of the first lens group, fg2 is a focal length of the second lens group, and f is a focal length of the lens system under the far-object in-focus state.

A lens system in the present disclosure includes: a first lens group that is moved toward an image side along an optical axis in focusing from a far-object in-focus state to a near-object in-focus state, and has positive optical power; and a second lens group that is disposed on the image side relative to the first lens group and has optical power. The lens system satisfies the following conditions (1) and (2).

0.5<|fg1/WD|<2.0  (1)

20<|fg2/f|<700  (2) where fg1 is a focal length of the first lens group, WD is a distance, on the optical axis, from an object surface to a lens surface located closest to an object side of the first lens group, fg2 is a focal length of the second lens group, and f is a focal length of the lens system under the far-object in-focus state.