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US 8,553,330 B1Granted
Cylindrical lens with refractive optical element and diffractive optical element
AssigneeSchott AG
InventorsEdgar Pawlowski, Matthias Brinkmann, Wolfram Beier, Jörg Luttmer, Bernd Wölfing, Polina Ebeling
Life of this patent
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Abstract
A cylindrical lens having a refractive optical element and a diffractive optical element is used in order to provide a cylindrical lens that can preferably be fabricated cost effectively and precisely, and in the case of which optical aberrations and defects in semiconductor diode laser arrangements can be corrected. The diffractive optical element can include various segments.
Claims31
A cylindrical lens comprising:
- a refractive optical element with a spherical surface;
- a diffractive optical element;
- and
- a further functional element, wherein said diffractive optical element together with said spherical surface define an aspheric cylindrical lens and said further functional element produces an image that permits said cylindrical lens to be aligned relative to at least one of a light source and an external pattern.
1 more element
A cylindrical lens comprising:
- a refractive optical element with a spherical surface;
- a diffractive optical element, wherein said diffractive optical element together with said spherical surface define an aspheric cylindrical lens;
- and
- a further diffractive element for producing a multilens imaging system, wherein the further diffractive element provides the cylindrical lens with a curved optical longitudinal axis.
1 more element
A cylindrical lens comprising:
- a refractive optical element with a spherical surface;
- a diffractive optical element, wherein said diffractive optical element together with said spherical surface define an aspheric cylindrical lens;
- and
- a further diffractive element for producing a multilens imaging system, wherein the further diffractive element defines a further cylindrical lens whose optical longitudinal axis extends substantially transverse to an optical longitudinal axis of the cylindrical lens.
1 more element
A cylindrical lens comprising:
- a refractive optical element with a spherical surface;
- a diffractive optical element;
- and
- a further functional element, wherein said diffractive optical element together with said spherical surface define an aspheric cylindrical lens, and wherein the further functional element has a property selected from the group consisting of:
- (i) being suitable for directing a predefined portion of light of a high power laser by reflection into one or more laser waveguides of a laser bar that serves only as monitor diode, (ii) producing a far field image that permits the cylindrical lens to be aligned relative to at least one of a light source and an external pattern, (iii) being suitable for aiming light onto a detector as a function of a position of the cylindrical lens relative to a light source, (iv) imaging a structure by means of which an adjustment or relative position of the cylindrical lens relative to a light source can be detected, (v) imaging a structure by means of which an adjustment or relative position of the cylindrical lens relative to a semiconductor diode laser can be detected, and (vi) imaging a structure by means of which an adjustment or relative position of the cylindrical lens relative to further optical elements can be detected.
2 more elements
Dependencies are inferred from the claim text.