Hon Hai Precision Industry Co., Ltd.

Hong-fu Jin Precision Industry (shenzhen) Co., Ltd.

Premier Image Technology (china) Ltd.

Zhongshan Innocloud Intellectual Property Services Co., Ltd.

An-Tze Lee

Sheng-An Wang

Hai-Jo Huang

Fang-Ying Peng

Xiao-Na Liu

Jun-Han Lin

An optical anti-shake driving structure includes a base, a sliding platform, a driving device and a limiting device. At least two guide rods are set on the base, the guide rod is set on the same plane as the base. The sliding platform suspended on the guide rods and having a lens set within a hole on the sliding platform, the lens aligned with a light transmissive hole of the base. The driving device set on the base to drive the sliding platform, the limiting device set on the base to limit the displacement range of the sliding platform. The components of the driving structure are simplified, of a greatly reduced thickness, are easy to assembly, as well as lowering cumulative tolerances.

Optical anti-shake driving structure

A zoom lens system includes, in order from the object side to the image side, a first, a second, and a third lens groups. The first lens group includes, in order from the object side to the image side, a first and a second lenses. The second lens group is capable of floating to realize an image stabilizating function and includes, in order from the object side to the image side, a third to sixth lenses. The zoom lens system satisfies various formulas, including 0.3&#x3c;d2a/D2&#x3c;0.4, wherein d2a is the distance between image-side surfaces of the fifth lens and of the sixth lens, and D2 is a width of the second lens group along an optical axis of the zoom lens system.

Zoom lens system

A wide-angle zoom lens includes a first lens group with positive refraction power, a second lens group with negative refraction power, a third lens group with positive refraction power, and a fourth lens group with positive refraction power. The first lens group, the second lens group, the third lens group, and the fourth lens group move along an optical axis of the zoom lens in focusing. The wide-angle zoom lens satisfies the formulas: 1.6&#x3c;f3/fw&#x3c;2.1, where f3 is the effective focal length of the third lens group, and fw is the effective focal length of the wide-angle zoom lens in a wide angle state.

Wide-angle zoom lens and camera module using same

A projection lens system includes, in order from the magnified side to the reduced side thereof, a first lens group with negative refractive power, and a second lens group with a positive refracting power. The first lens group includes a first lens having a negative refracting power. The projection lens system satisfies the following condition:4.5&#x3c;|1|/&#x3c;6;wherein F1 is the effective focal length of the first lens; F is the effective focal length of the projection lens system.

Projection lens system with high resolution and compact size

A projection lens system includes, in order from a screen-side to an SLM-side thereof, a first lens group of negative refractive power which includes a first lens, and a second lens group of positive refractive power. The second lens group includes a second to fifth lenses in order from the screen-side to the SLM-side of the projection lens system. The projection lens system satisfies the following condition formulas: 1.95&#x3c;|F1/Fw|&#x3c;2.15, 0.5&#x3c;|f4/Fw|&#x3c;0.7, and 1.05&#x3c;|f5/Fw|&#x3c;1.25, where F1 is the effective focal length of the first lens group, f4 is the focal length of the fourth lens, and f5 is the focal length of the fifth lens, Fw is the effective focal length of the projection lens system which is in the wide-angle state.

Projection lens system

A zoom lens system includes a first lens group of negative refractive power, a second lens group of positive refractive power and a third lens group of positive refractive power. The zoom lens system satisfies the following condition formulas: 0.78&#x3c;|f/f|&#x3c;0.91, and 0.72&#x3c;L/fT&#x3c;0.87, where frepresents an effective focal length of the first lens group, frepresents an effective focal length of the second lens group, Lis a displacement of the second lens group when the zoom lens system varies from a wide-angle state to a telephoto state, and fT represents an effective focal length of the zoom lens system which is in the telephoto state.

A wide-angle zoom lens system includes a first lens group with negative refraction power, a second lens group with positive refraction power, and a third lens group with positive refraction power. The first lens group, the second lens group, and the third lens group move along an optical axis of the zoom lens system in focusing. The wide-angle zoom lens system satisfies the formulas: 0.77&#x3c;|f2/f1|&#x3c;1.1; and 0.7&#x3c;L/f&#x3c;1.08; wherein f1 is the effective focal length of the first lens group, f2 is the effective focal length of the second lens group, Lis a distance of the second lens group moving from a wide-angle state to a telephoto state, and fis the effective focal length of the wide-angle zoom lens system in the telephoto state.

Wide-angle zoom lens system

A projection lens system, in the order from a magnified side to a reduced side, includes a first lens group with negative refraction power and a second lens group with positive refraction power. The projection lens system satisfies the formulas: &#x2212;1.55&#x3c;F1/F2&#x3c;&#x2212;1.12; wherein F1 is the effective focal length of the first lens group, and F2 is the effective focal length of the second lens group.

Projection lens system with long back focal length

An image lens for imaging an object on an image plane, in the order from the object side to the image side thereof, includes: a first lens with negative refraction power, a second lens with positive refraction power, a third lens with negative refraction power, a fourth lens with positive refraction power, and a fifth lens. The image lens satisfies the following formula: 0.9&#x3c;F2/F&#x3c;1.4; wherein F2 is focal length from the second lens to the fourth lens, F is focal length of the image lens.

Image lens with low chromatic aberration and high resolution

A projection lens includes, in order from the magnification end to the minimization end thereof: a first lens group of a negative refractive power; and a second lens group of a positive refractive power. The projection lens satisfies the formula: 0.061&#x3c;F/L&#x3c;0.078; where F represents the effective focal length of the projection lens and L represent the total length of the projection lens.

Projection lens

Provided is a zoom lens for imaging an object on an imaging surface. The zoom lens includes, in the order from an object side to an image side thereof, a first lens group with positive refraction power, a second lens group with negative refraction power, a third lens group with positive refraction power, and a fourth lens group with positive refraction power. The first lens group includes a first surface. The zoom lens satisfies the formula: 0.15&#x3c;|L3|/Lt&#x3c;0.25, where L3 is a distance of the movement of the third lens group along an optical axis of the zoom lens when the zoom lens is switched between a wide-angle state and a telephoto state, and Lt is a distance from the first surface to the imaging surface.

Zoom lens and imaging device using same

A projection lens system includes, in order from the magnified side to the reduced side thereof, a first lens group with negative refractive power, a second lens group with a positive refracting power, and a spatial light modulator. The projection lens system satisfies the following condition: 3.478&#x3c;BFL/F&#x3c;3.528. Wherein: BFL is a back focal length of the projection lens system; F is an effective focal length of the projection lens system.

A lens system with positive refraction power, in order from the object-side to the image-side, includes a first lens group with negative refraction power and a second lens group with positive refraction power. The first lens group includes a first lens with negative refraction power, a second lens with positive refraction power, and a third lens with positive refraction power. The second lens group includes a fourth lens with negative refraction power, a fifth lens, and a sixth lens. The lens system satisfies the following condition: 5&#x3c;D/F&#x3c;5.3, wherein: D is a total length of the lens system; F is a focal length of the lens system.

Lens system

A zoom lens includes a first lens group of negative refractive power, a second lens group of positive refractive power and a third lens group of positive refractive power. The zoom lens satisfies the following condition formulas: 0.68&#x3c;|f2/f1|&#x3c;0.85, and 0.65&#x3c;L2/fT&#x3c;0.86, where f1 represents an effective focal length of the first lens group, f2 represents an effective focal length of the second lens group, L2 is a displacement of the second lens group when the zoom lens varies from a wide-angle state to a telephoto state, and fT represents an effective focal length of the zoom lens which is in the telephoto state.

Zoom lens

A zoom projection lens system includes a first lens group with negative refraction power and a second lens group with positive refraction power. The first lens group includes a first lens with negative refraction power. The second lens group includes a second lens with positive refraction power, a third lens with positive refraction power, a fourth lens with negative refraction power, and a fifth lens with positive refraction power. The zoom projection lens system satisfies the following formulas: 1.9&#x3c;|F1/Fw|&#x3c;2.1, 0.5&#x3c;|f4/Fw|&#x3c;0.8, 0.95&#x3c;|f5/Fw|&#x3c;1.2, where 'F1', 'f4' and &#x201c;f5&#x201d; are respectively the effective focal lengths of the first lens group, the fourth lens and the fifth lens, &#x201c;Fw&#x201d; is the effective focal lengths of the zoom projection lens system in the wide angle state.

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Taipei, Taiwan

An-Tze Lee