Monitoring lens apparatus and monitoring camera
AssigneeFujinon Corporation
InventorsDaigo Aiba, Shigeru Yoshida
Life of this patent
Estimating the term…
Abstract
A monitoring lens apparatus is provided and includes a fixed cylinder, a first lens frame provided at an inner portion of the fixed cylinder and movable in an optical axis direction, a second lens frame provided at the inner portion of the fixed cylinder and movable in the optical axis direction, a first ring provided rotatably to the fixed cylinder and provided with a cam groove for driving the first lens frame, a second ring provided rotatably to the fixed cylinder on an object side of the first ring and provided with a cam groove for driving the second lens frame, and an extended portion provided integrally with the first ring and extended to the object side to cover an outer periphery of the second ring.
Claims9
A monitoring lens apparatus comprising:
- a fixed cylinder;
- a first lens frame disposed inside the fixed cylinder, the first lens frame being movable in an optical axis direction;
- a second lens frame disposed inside the fixed cylinder, the second lens frame being movable in the optical axis direction;
- a first ring pivotable to the fixed cylinder, the first ring having a cam for driving the first lens frame;
- a second ring pivotable to the fixed cylinder, the second ring being disposed on an object side of the first ring and having a cam for driving the second lens frame;
- an extended portion provided integrally with the first ring and extended to the object side to cover an outer periphery of the second ring, and
- a lock knob inserted to an open hole portion at the extended portion, the lock knob being engaged with a screw hole at the second ring for fixing both of rotational positions of the first and the second rings.
A dome type monitoring camera comprising:
- a monitoring lens apparatus comprising:
- a fixed cylinder,
- a first lens frame disposed inside the fixed cylinder, the first lens frame being movable in an optical axis direction,
- a second lens frame disposed inside the fixed cylinder, the second lens frame being movable in the optical axis direction,
- a first ring pivotable to the fixed cylinder, the first ring having a cam for driving the first lens frame,
- a second ring pivotable to the fixed cylinder, the second ring being disposed on an object side of the first ring and having a cam for driving the second lens frame,
- an extended portion provided integrally with the first ring and extended to the object side to cover an outer periphery of the second ring,
- a first operating portion at the extended portion, the first operating portion being held when operating the first ring, and
- a second operating portion at the second ring, the second operating portion being held when operating the second ring;
- wherein the first operating portion and the second operating portion are disposed proximately to a vicinity of an end portion on the object side of the monitoring lens apparatus;
- a transparent case member that covers the object side of the monitoring lens apparatus;
- and
- a cover member disposed on a side of the monitoring lens apparatus of the case member, the cover member covering the monitoring lens apparatus and having an opening in correspondence with a front end portion on the object side of the monitoring lens apparatus,
- wherein the operator of the dome type monitoring camera does not need to insert a finger tip to a rear side of the monitoring lens apparatus, away from the front end portion on the object side of the monitoring lens apparatus, when operating the first ring or the second ring.
Dependencies are inferred from the claim text.