Apple Inc.

Nikon Corporation

Ultratech, Inc.

Coherent, Inc.

Romeo I Mercado

Yutaka Suenaga

Kazuo Ushida

Toshihiro Sasaya

Shiyu Zhang

A folded telephoto lens system may include multiple lenses with refractive power and a light path folding element. Light entering the camera through lens(es) on a first path is refracted to the folding element, which changes direction of the light on to a second path with lens(es) that refract the light to form an image plane at a photosensor. At least one of the object side and image side surfaces of at least one of the lens elements may be aspheric. Total track length (TTL) of the lens system may be 14.0 mm or less. The lens system may be configured so that the telephoto ratio (TTL/f) is less than or equal to 1.0. Materials, radii of curvature, shapes, sizes, spacing, and aspheric coefficients of the optical elements may be selected to achieve quality optical performance and high image resolution in a small form factor camera.

Folded telephoto camera lens system

A compact, small form factor optical system for cameras that provides multiple optical paths to capture images of an object field in different portions of the light spectrum. The optical system includes a front lens group that captures visible and near-infrared (NIR) light from an object field and refracts the light to a beam splitter that splits the visible light and the NIR light onto two paths. On the visible light path, a visible light lens group refracts the visible light to form an image of the object field at a visible light sensor. On the NIR light path, a NIR light lens group refracts the NIR light to form an image of the object field at an NIR light sensor. The optical system thus provides images of the object field at two sensor planes, one image in the visible spectrum and the other image in the NIR spectrum.

Optical system

A folded telephoto lens system may include multiple lenses with refractive power and a light path folding element. Light entering the camera through lens(es) on a first path is refracted to the folding element, which changes direction of the light on to a second path with lens(es) that refract the light to form an image plane at a photosensor. At least one of the object side and image side surfaces of at least one of the lens elements may be aspheric. Total track length (TTL) of the lens system may be 14.0 mm or less. The lens system may be configured so that the telephoto ration (TTL/f) is less than or equal to 1.0. Materials, radii of curvature, shapes, sizes, spacing, and aspheric coefficients of the optical elements may be selected to achieve quality optical performance and high image resolution in a small form factor camera.

A compact telephoto lens system that may be used in a small form factor cameras. The lens system may include five lens elements with refractive power. Alternatively, the lens system may include four lens elements with refractive power. At least one of the object side and image side surfaces of at least one of the lens elements is aspheric. Total track length (TTL) of the lens system may be 6.0 mm or less. Focal length f of the lens system may be at or about 7.0 mm (for example, within a range of 6.5-7.5 mm). Lens elements are selected and configured so that the telephoto ratio (TTL/f) satisfies the relation 0.74&#x3c;TTL/f&#x3c;1.0. Materials, radii of curvature, shapes, sizes, spacing, and aspheric coefficients of the lens elements may be selected to achieve quality optical performance and high image resolution in a small form factor telephoto camera.

Small form factor telephoto camera

An optical imaging lens assembly that may have six lens components. The optical imaging lens assembly may provide a 74 degree field of view. The first and fourth lens components may have positive refractive power. The second, third, and sixth lens components may have negative refractive power. The first lens component may have convex object-side and image-side refractive surfaces. The second and fifth lens components may have convex object-side and concave image-side refractive surfaces. The fourth lens component may have concave object-side and convex image-side refractive surfaces. The sixth lens component may have concave object-side and image-side refractive surfaces. The refracting surfaces may be aspheric. The optical imaging lens assembly may have a total track length of less than 6 millimeters and be part of a digital camera integrated into a portable wireless communications device.

Camera lens system

An optical imaging lens assembly that may have six lens components. The first, third, fourth, and fifth lens components may have positive refractive power. The second and sixth lens components may have negative refractive power. The lens assembly may satisfy the relation |f/f|+|f/f|&#x3c;1.4, wherein f is a focal length of the optical imaging lens assembly, fis a focal length of the fifth lens component, fis a focal length of the sixth lens component. The lens assembly may also satisfy the further relation 0.8&#x3c;|f/f|+|f/f|. The first lens component may include a wafer lens having a lens element molded on one or both surfaces of a planar substrate or two wafer lenses having a lens element molded on one surface of each of two planar substrates. The wafer lens may include an electrically controlled electrochromic surface having variable light transmittance.

An optical imaging lens assembly that may have five lens components. The first, third, and fourth lens components may have positive refractive power. The second and fifth lens components may have negative refractive power. The third lens component may have convex object-side and convex image-side refractive surfaces. The fourth lens component may have convex object-side and concave image-side refractive surfaces. The first lens component may include a wafer lens having a lens element molded on one or both surfaces of a planar substrate or two wafer lenses having a lens element molded on one surface of each of two planar substrates. The wafer lens may include an electrically controlled electrochromic surface having variable light transmittance in response to an applied electrical voltage. The refracting surfaces may be aspheric.

Camera lens system with five lens components

A folded lens system may include multiple lenses with refractive power and a light path folding element. Light entering the camera through lens(es) on a first optical path or axis is refracted to the folding element, which changes direction of the light onto a second optical path or axis with lens(es) that refract the light to form an image plane at a photosensor. At least one of the object side and image side surfaces of at least one of the lens elements may be aspheric. Total track length (TTL) of the lens system may be 16.0 mm or less. The lens system may be configured so that the telephoto ration |TTL/f| is greater than 1.0. Materials, radii of curvature, shapes, sizes, spacing, and aspheric coefficients of the optical elements may be selected to achieve quality optical performance and high image resolution in a small form factor camera.

Folded camera lens systems

Ring-field, catoptric and catadioptric, unit-magnification, projection optical systems having non-concentric optical surfaces are disclosed. Each system has a system axis with object and image planes on opposite sides of the system axis. The non-concentric surfaces allow for working distances of the object and image planes in excess of 100 millimeters to be achieved, with a ring-field width sufficient to allow a rectangular object-field having a long dimension in excess of 100 mm to be projected.

Unit-magnification catadioptric and catoptric projection optical systems

A unit magnification projection optical system includes, listed in order along a system axis, a mirror, a lens group having negative power and a lens group having positive power. The optical system is a symmetric system, with an object plane on one side of the system axis and an object plane on an opposite side of the system axis. The object and image planes are spaced apart from the positive lens group by a working distance greater than 100 millimeters.

Large-field unit-magnification catadioptric projection system

A 1&#xd7; projection optical system for deep ultra-violet (DUV) photolithography is disclosed. The optical system is a modified Dyson system capable of imaging a relatively large field at high numerical apertures at DUV wavelengths. The optical system includes a lens group having first and second prisms and four lenses having a positive-negative-positive negative arrangement as arranged in order from the prisms toward the mirror. A projection photolithography system that employs the projection optical system of the invention is also disclosed.

Deep ultraviolet unit-magnification projection optical system and projection exposure apparatus

A projection optical system suitable for projection photolithography is disclosed. The projection optical system is a modified Wynne-Dyson system capable of imaging a large field over both a narrow and a broad spectral range. The projection optical system includes a positive lens group arranged adjacent to but spaced apart from a concave mirror along the mirror axis on the concave side of the mirror. The system also includes a variable aperture stop so that the system has a variable NA. The projection optical system has two or more common foci within an ultraviolet exposure band and a third common focus in a visible alignment band. A projection photolithography system that employs the projection optical system is also disclosed.

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Fremont, CA, United States of America

Romeo I Mercado