POWER PRESSES FOR PERFORMING

Brand	Owner	Address	Description
FIN-MAKER	MINSTER MACHINE COMPANY, THE	240 West Fifth Street PO Box 120 Minster OH 458650120	POWER PRESSES FOR PERFORMING A COMBINATION OF THE FOLLOWING TYPES OF OPERATIONS ON COILED OR CONTINUOUS MATERIAL-NAMELY, PIERCING, FORMING, PERFORATING, LANCING, EMBOSSING, AND SEPARATING THE COMPLETED PART;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Provided is a zoom lens optical system suitable for cameras using solid state imaging devices, which is designed compact, has a high zooming ratio and telecentricity, and compensates for color aberration. The zoom lens optical system includes a first lens group having a positive refractive power, for performing zooming, a second lens group having a negative refractive power, for performing zooming, a third lens group having a positive refractive power, for performing zooming, and a fourth lens group having a positive refractive power. The first, second, third, and fourth lens groups are sequentially arranged from an object and satisfy the following equations: