Attachment producing anamorphic effect

Patent metadata

Field	Value
Publication number	US-11237400-B2
Application number	US-201916559562-A
Country	US
Kind code	B2
Filing date	Sep 3, 2019
Priority date	Feb 12, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

Apparatuses, systems, and methods for producing non-rotationally symmetric optical aberrations. Such aberrations may be created by a removable attachment that may be attached to another lens, such as a spherical lens. Aberrations that appear to reproduce an anamorphic effect may be produced, yet the underlying camera system may remain a spherical camera system, and the capture mode may remain non-anamorphic.

First claim

What is claimed is:

1. An attachment for use with a camera system, wherein the attachment comprises a lens group including lens elements, the lens group being configured to induce non-rotationally symmetric optical aberrations in a lens of the camera system without producing compression in any axial direction of greater than 1.09, and wherein the lens group is configured to be positioned between an object space and the camera lens.

2. The attachment as recited in claim 1 , wherein the lens elements are each symmetrical.

3. The attachment as recited in claim 1 , wherein the camera lens is spherical.

4. The attachment as recited in claim 1 , wherein the lens group is coupled to a housing, and wherein the housing is configured to attach to the camera lens.

5. The attachment as recited in claim 1 , wherein the lens elements include a first lens element and a second lens element, and wherein the first lens element has a positive lens surface and the second lens element has a negative lens surface.

6. The attachment as recited in claim 5 , wherein the second lens element negative lens surfaces faces opposite the first lens element positive lens surface.

7. The attachment as recited in claim 5 , wherein each of the first and second lens elements include planar lens surfaces that are positioned towards one another.

8. The attachment as recited in claim 5 , wherein the positive lens surface of the first lens element faces the object space and the second lens element negative lens surface faces the camera lens.

9. A camera lens system comprising:
a camera comprising a lens; and
a removable attachment including:
a lens group including at least two lens elements, the lens group being configured to induce non-rotationally symmetric optical aberrations in the camera lens without producing compression in any axial direction of greater than 1.09; and
a housing coupled to the lens group and configured to removably attach to the camera lens with the lens group interposed between an object space and the camera lens.

10. The camera lens system as recited in claim 9 , wherein the at least two lens elements are each cylindrical lens elements, and wherein the camera lens is spherical.

11. The camera lens system as recited in claim 9 , wherein the lens group induces an anamorphic optical effect in the camera lens.

12. The camera lens system as recited in claim 9 , wherein the at least two lens elements include a first lens element and a second lens element, and wherein the first lens element has a positive lens surface and the second lens element has a negative lens surface.

13. The camera system as recited in claim 12 , wherein the housing is configured to position the first lens element positive lens surface facing the object space and the second lens element negative lens surface facing the camera lens.

14. The camera system as recited in claim 12 , wherein the first lens element positive lens surface and the second lens element negative lens surface each have the same radius of curvature.

15. A method for inducing an optical effect in a lens comprising:
providing an attachment that includes a lens group connected with a housing, the lens group comprising lens elements, wherein the housing is configured to attach to a lens such that the lens group is positioned between an object space and the lens; and
inducing, with the lens group, a non-rotationally symmetric aberration in the lens without producing compression in any axial direction of greater than 1.09.

16. The method as recited in claim 15 , wherein the lens elements are cylindrical.

17. The method as recited in claim 15 , wherein the lens is spherical.

18. The method as recited in claim 15 , wherein the lens elements include a first lens element and a second lens element, and wherein the first lens element has a positive lens surface and the second lens element has a negative lens surface.

19. The method as recited in claim 18 , wherein first lens element positive surface is facing toward the object space.

20. The method as recited in claim 15 , wherein the non-rotationally symmetric optical aberrations produce an anamorphic optical effect.

Assignees

• Panavision Int Lp

Inventors

• Sasaki Daniel Keith
• Mills Brian Grant
• Ishioka Rick Takeshi

Classifications

• G02B13/08 Primary

  Anamorphotic objectives · CPC title

• G03B17/565

  Optical accessories, e.g. converters for close-up photography, tele-convertors, wide-angle convertors · CPC title

• G02B15/10

  by adding a part, e.g. close-up attachment · CPC title

• G02B27/0037

  with diffracting elements (G02B27/0056 takes precedence; holographic optical elements G02B5/32; zone systems G02B5/1876) · CPC title

• G03B37/06

  involving anamorphosis (G03B37/02, G03B37/04 take precedence) · CPC title