1. A zoom lens comprising, in order from an object side to an image side, a first lens unit having a positive refractive power that does not move for zooming, a second lens unit having a negative refractive power that moves during zooming, a third lens unit having a negative refractive power that moves during zooming, a fourth lens unit having a positive refractive power that moves during zooming, and a fifth lens unit having a positive refractive power that does not move for zooming,
wherein the zoom lens satisfies the following conditional expressions,
1.50<L2wL2z1a<1600.00,
0.05<L2wL3w<0.60, and
\u221214.50<f1f23w<\u221210.00,
where L2w denotes an air interval between the second lens unit and the third lens unit at a wide-angle end, L3w denotes an air interval between the third lens unit and the fourth lens unit at the wide-angle end, f1 denotes a focal length of the first lens unit, f23w denotes a combined focal length of the second lens unit and the third lens unit at the wide-angle end, fw denotes a focal length of the whole system at the wide-angle end, Z denotes a zoom ratio, and L2z1a denotes a smallest value of the air interval between the second lens unit and the third lens unit in a wide angle zoom range in which a magnification-varying ratio relative to that at the wide-angle end ranges from Z0.02 to Z0.35.
2. A zoom lens according to claim 1, wherein the zoom lens satisfies the following conditional expression:
0.85<L2wL2t<11.50,
where L2t denotes a air interval between the second lens unit and the third lens unit at a telephoto end.
3. A zoom lens according to claim 1, wherein the zoom lens satisfies the following conditional expression:
1.50<L2wL2z2a<1000.00,
where L2z2a denotes a smallest value of the air interval between the second lens unit and the third lens unit in a telephoto zoom range in which a focal length fz2 of the whole system satisfies the following conditional expression:
fw\xb7Z0.55<fz2<fw\xb7Z0.85.
4. A zoom lens according to claim 1, wherein the zoom lens satisfies the following conditional expression:
\u22123.00<L2wf2<\u22120.50,
where f2 denotes a focal length of the second lens unit.
5. A zoom lens according to claim 1, wherein the zoom lens satisfies the following conditional expression:
0.15<f2f3<0.50,
where f2 denotes a focal length of the second lens unit, and f3 denotes a focal length of the third lens unit.
6. A zoom lens according to claim 1, wherein the zoom lens satisfies the following conditional expression:
3.50<f1f4<4.50,
where f4 denotes a focal length of the fourth lens unit.
7. A zoom lens according to claim 1, wherein the zoom lens satisfies the following conditional expression:
2.00<\u03b24t\u03b24w<7.00,
where \u03b24w denotes a lateral magnification of the fourth lens unit at the wide-angle end, and \u03b24t denotes a lateral magnification of the fourth lens unit at a telephoto end.
8. An image pickup apparatus comprising:
a zoom lens including, in order from an object side to an image side, a first lens unit having a positive refractive power that does not move for zooming, a second lens unit having a negative refractive power that moves during zooming, a third lens unit having a negative refractive power that moves during zooming, a fourth lens unit having a positive refractive power that moves during zooming, and a fifth lens unit having a positive refractive power that does not move for zooming,
wherein the zoom lens satisfies the following conditional expressions,
1.50<L2wL2z1a<1600.00,
0.05<L2wL3w<0.60, and
\u221214.50<f1f23w<\u221210.00,
where L2w denotes an air interval between the second lens unit and the third lens unit at a wide-angle end, L3w denotes an air interval between the third lens unit and the fourth lens unit at the wide-angle end, f1 denotes a focal length of the first lens unit, f23w denotes a combined focal length of the second lens unit and the third lens unit at the wide-angle end, fw denotes a focal length of the whole system at the wide-angle end, Z denotes a zoom ratio, and L2z1a denotes a smallest value of the air interval between the second lens unit and the third lens unit in a wide angle zoom range in which a magnification-varying ratio relative to that at the wide-angle end ranges from Z0.02 to Z0.35; and
a solid state image pickup element that receives an image formed by the zoom lens.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. In a speech recognition system, a method of processing a voice command comprising:
identifying a voice command having a voice command component and a dictation component within a contiguous utterance, wherein said voice command component is specified by a command grammar and said dictation component is free-form text which is not specified by said command grammar, and wherein said dictation component is embedded within said voice command; and
executing said identified voice command component using at least a part of said dictation component as an execution parameter of said voice command.
2. The method of claim 1, wherein said executing step comprises:
loading a translation rule and linking said voice command component to an application command using said translation rule; and
providing said application command to an associated computing application.
3. The method of claim 2, wherein said providing step comprises providing said at least a part of said dictation component as a parameter of said application command to said associated computing application.
4. The method of claim 3, wherein said providing step further comprises inserting said at least a part of said dictation component in a text field of said associated computing application.
5. The method of claim 1, wherein said executing step comprises providing said voice command component to an associated computing application for processing, and further providing said at least a part of said dictation component as a parameter of said voice command to said computing application.
6. A machine-readable storage, having stored thereon a computer program having a plurality of code sections executable by a machine for causing the machine to perform the steps of:
identifying a voice command having a voice command component and a dictation component within a contiguous utterance, wherein said voice command component is specified by a command grammar and said dictation component is free-form text which is not specified by said command grammar, and wherein said dictation component is embedded within said voice command; and
executing said identified voice command component using at least a part of said dictation component as an execution parameter of said voice command.
7. The machine-readable storage of claim 6, further comprising:
loading a translation rule and linking said voice command component to an application command using said translation rule; and
providing said application command to an associated computing application.
8. The machine-readable storage of claim 7, wherein said providing step comprises providing said at least a part of said dictation component as a parameter of said application command to said associated computing application.
9. The machine-readable storage of claim 8, wherein said providing step further comprises inserting said at least a part of said dictation component in a text field of said associated computing application.
10. The machine-readable storage of claim 6, wherein said executing step comprises providing said voice command component to an associated computing application for processing, and further providing said at least a part of said dictation component as a parameter of said voice command to said computing application.