US 12,656,595 B2Granted

Optical system

AssigneeCarl Zeiss AG

InventorsAlexander Epple, Johannes Zellner, David Shafer, Marco Pretorius

Life of this patent

Estimating the term…

Loading patent…

Abstract

An optical system with an optical axis includes a display for displaying an image, an eyepiece for viewing the image, the eyepiece including a lens. The display is configured such that a marginal ray light beam emanates from an edge of the display and propagates to the lens in a light incidence direction. The display is arranged first along the optical axis in the light incidence direction, followed by the lens arranged on the optical axis. No further optical unit of the optical system is arranged between the lens and a pupil of the eye. The marginal ray light beam has a chief ray. The chief ray propagates at a first chief ray height at the lens and at a second chief ray height at the display. The first chief ray height is at least level with the second chief ray height.

Claims26

Dependent claims

An optical system, comprising:

an optical axis;
a display configured to display an image, the display being arranged on the optical axis and having an edge, the edge delimiting the display;
an eyepiece configured to view the image, the eyepiece including a lens;
and
at least one intermediate image,
wherein:
the edge of the display is configured such that a marginal ray light beam emanates from the edge of the display and propagates to the lens in a light incidence direction, the marginal ray light beam having a chief ray,
the display is arranged first along the optical axis in the light incidence direction, followed by the lens unit arranged on the optical axis,
no further optical unit of the optical system is arranged between the lens and a pupil of the eye,
the optical system is configured such that the chief ray propagates at a first chief ray height at the lens, the first chief ray height being a first distance between the optical axis and the chief ray at the lens,
the display is configured such that the chief ray propagates at a second chief ray height at the display, the second chief ray height being a second distance between the optical axis and the chief ray at the display,
the eyepiece includes a first lens group and a second lens group,
as seen counter to the light incidence direction, the first lens group is arranged first along the optical axis, followed by the second lens group,
the at least one intermediate image is arranged between the first lens group and the second lens group,
the first lens group includes a first lens and a second lens, wherein, as seen counter to the light incidence direction, the first lens is arranged first along the optical axis, followed by the second lens, the first lens having a bi-aspheric form and the second lens being in the form of a meniscus lens,
the second lens group includes a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, wherein, as seen counter to the light incidence direction, the third lens is arranged first along the optical axis, followed by the fourth lens, then the fifth lens, then the sixth lens, then the seventh lens, and then the eighth lens, the third lens being in the form of a meniscus lens, the fourth lens having a bi-aspheric form, and the seventh lens and the eighth lens forming a cemented member, and
the optical system has one of the following features:
(i) the first chief ray height is at least level with the second chief ray height, and
(ii) the first chief ray height has a larger value than the second chief ray height.

16 more elements

An optical system, comprising:

an optical axis;
a display configured to display an image, the display being arranged on the optical axis and having an edge, the edge delimiting the display;
an eyepiece configured to view the image, the eyepiece including a lens with a first lens group and a second lens group;
and
at least one intermediate image arranged between the first lens group and the second lens group,
wherein:
as seen counter to the light incidence direction, the first lens group is arranged first along the optical axis, followed by the second lens group,
the edge of the display is configured such that a marginal ray light beam emanates from the edge of the display and propagates to the lens in a light incidence direction, the marginal ray light beam having a chief ray,
the display is arranged first along the optical axis in the light incidence direction, followed by the lens unit arranged on the optical axis,
the display is configured such that the chief ray propagates at a second chief ray height at the display, the second chief ray height being a second distance between the optical axis and the chief ray at the display,
no further optical unit of the optical system is arranged between the lens and a pupil of the eye,
the first lens group includes a single lens in the form of a first lens, the first lens having positive refractive power,
the second lens group includes a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein, as seen counter to the light incidence direction, the second lens is arranged first along the optical axis, followed by the third lens, then the fourth lens, then the fifth lens, and then the sixth lens, the second lens having positive refractive power, the third lens having negative refractive power, the fourth lens having positive refractive power, the fifth lens having positive refractive power, and the sixth lens having negative refractive power,
the optical system is configured such that the chief ray propagates at a first chief ray height at the lens, the first chief ray height being a first distance between the optical axis and the chief ray at the lens, and
the optical system has one of the following features:
(i) the first chief ray height is at least level with the second chief ray height, and
(ii) the first chief ray height has a larger value than the second chief ray height.

14 more elements

An optical system, comprising:

an optical axis;
a display configured to display an image, the display being arranged on the optical axis and having an edge, the edge delimiting the display;
an eyepiece configured to view the image, the eyepiece including a lens with a first lens group and a second lens group;
and
at least one intermediate image arranged between the first lens group and the second lens group,
wherein:
as seen counter to the light incidence direction, the first lens group is arranged first along the optical axis, followed by the second lens group,
the edge of the display is configured such that a marginal ray light beam emanates from the edge of the display and propagates to the lens in a light incidence direction, the marginal ray light beam having a chief ray,
the display is arranged first along the optical axis in the light incidence direction, followed by the lens unit arranged on the optical axis,
the display is configured such that the chief ray propagates at a second chief ray height at the display, the second chief ray height being a second distance between the optical axis and the chief ray at the display,
no further optical unit of the optical system is arranged between the lens and a pupil of the eye,
the first lens group includes a single lens in the form of a first lens, the first lens having positive refractive power,
the second lens group includes a second lens, a third lens, and a fourth lens, wherein, as seen counter to the light incidence direction, the second lens is arranged first along the optical axis, followed by the third lens, and then the fourth lens, the second lens having positive refractive power, the third lens having positive refractive power, and the fourth lens having negative refractive power,
the optical system is configured such that the chief ray propagates at a first chief ray height at the lens, the first chief ray height being a first distance between the optical axis and the chief ray at the lens, and
the optical system has one of the following features:
(i) the first chief ray height is at least level with the second chief ray height, and
(ii) the first chief ray height has a larger value than the second chief ray height.

14 more elements

An optical system, comprising:

an optical axis;
a display configured to display an image, the display being arranged on the optical axis and having an edge, the edge delimiting the display;
an eyepiece configured to view the image, the eyepiece including a lens with a first lens group and a second lens group;
and
at least one intermediate image arranged between the first lens group and the second lens group,
wherein:
as seen counter to the light incidence direction, the first lens group is arranged first along the optical axis, followed by the second lens group,
the edge of the display is configured such that a marginal ray light beam emanates from the edge of the display and propagates to the lens in a light incidence direction, the marginal ray light beam having a chief ray,
the display is arranged first along the optical axis in the light incidence direction, followed by the lens unit arranged on the optical axis,
the display is configured such that the chief ray propagates at a second chief ray height at the display, the second chief ray height being a second distance between the optical axis and the chief ray at the display,
no further optical unit of the optical system is arranged between the lens and a pupil of the eye,
the first lens group includes a single lens in the form of a first lens, the first lens having positive refractive power,
the second lens group includes a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein, as seen counter to the light incidence direction, the second lens is arranged first along the optical axis, followed by the third lens, then the fourth lens, then the fifth lens, and then the sixth lens, the second lens having positive refractive power, the third lens having negative refractive power, the fourth lens having negative refractive power, the fifth lens having positive refractive power, and the sixth lens having positive refractive power, the optical system is configured such that the chief ray propagates at a first chief ray height at the lens, the first chief ray height being a first distance between the optical axis and the chief ray at the lens, and
the optical system has one of the following features:
(i) the first chief ray height is at least level with the second chief ray height, and
(ii) the first chief ray height has a larger value than the second chief ray height.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/109,206Filed 13 Feb 2023 · continuation
Priority: 13 Aug 2020
Published: US 2023/0333364 A119 Oct 2023
Granted: 16 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G02B 25/001
Eyepieces; Magnifying glasses: eyepieces
G02B 27/026
Comprising a light source, e.g. for viewing photographic slides, X-ray transparancies: and a display device, e.g. CRT, LCD, for adding markings or…
G02B 9/04
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having two…
G02B 23/12
Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices:…