Spectacle lens for a display device which can be placed on the head of a user and which generates an image, and display device comprising such a spectacle lens

Patent metadata

Field	Value
Publication number	US-10185149-B2
Application number	US-201515516001-A
Country	US
Kind code	B2
Filing date	Sep 21, 2015
Priority date	Sep 30, 2014
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

A spectacle lens for a display device can be fitted on the head of a user and generate an image. The spectacle lens includes a coupling-in section, a coupling-out section, and a light guiding channel. The spectacle lens includes a first partial spectacle lens connected to a second partial spectacle lens. The light guiding channel runs in the first partial spectacle lens and the two partial spectacle lenses are connected to each other via contact surfaces which extend on the one hand from the front side to the rear side and on the other hand from the edge of the spectacle lens along a predetermined length in a second direction, which runs transversely with respect to the first direction.

First claim

The invention claimed is:

1. A spectacle lens for a display device that can be fitted on the head of a user and generate an image, the spectacle lens defining a front side, a rear side and an edge connecting the front and rear side, the spectacle lens comprising:
a coupling-in section;
a coupling-out section spaced apart from the coupling-in section; and
a light guiding channel configured to guide light bundles of pixels of the generated image, which are coupled into the spectacle lens via the coupling-in section of the spectacle lens, in the spectacle lens along a first direction to the coupling-out section, by which they are coupled out of the spectacle lens,
wherein the spectacle lens comprises several parts, including a first partial spectacle lens and a second partial spectacle lens connected together,
wherein the light guiding channel runs in the first partial spectacle lens, and
wherein the first and second partial spectacle lenses are connected to each other via contact surfaces which extend on the one hand from the front side to the rear side and on the other hand from the edge of the spectacle lens along a predetermined length in a second direction, which runs transversely with respect to the first direction.

2. The spectacle lens according to claim 1 , wherein the coupling-out section comprises at least one reflective surface which is formed in the first partial spectacle lens.

3. The spectacle lens according to claim 2 , wherein the coupling-out section comprises at least one reflective surface which is formed in the second partial spectacle lens.

4. The spectacle lens according to claim 3 , wherein the at least one reflective surface is formed curved.

5. The spectacle lens according to claim 2 , wherein the at least one reflective surface is formed curved.

6. The spectacle lens according to claim 1 , wherein the coupling-out section comprises at least one reflective surface which is formed in the second partial spectacle lens.

7. The spectacle lens according to claim 6 , wherein the at least one reflective surface is formed curved.

8. The spectacle lens according to claim 1 , wherein, the coupling-out section comprises, in one of the first and second partial spectacle lenses, a recess and in the other of the first and second partial spectacle lenses a projecting section which is complementary to the recess.

9. The spectacle lens according to claim 1 , wherein at least one of the contact surfaces extends from the edge of the spectacle lens to the coupling-out section.

10. The spectacle lens according to claim 1 , wherein the first and second partial spectacle lenses each comprise two contact surfaces which extend from the edge of the spectacle lens to the coupling-out section.

11. The spectacle lens according to claim 10 , wherein the two contact surfaces of the first and second partial spectacle lens in each case lie in one plane.

12. The spectacle lens according to claim 1 , wherein the two partial spectacle lenses comprise the same material.

13. A display device, comprising:
a holder that can be fitted on the head of a user,
an image-generating module secured to the holder, which generates an image, and
an imaging optical system secured to the holder, which comprises a spectacle lens according to claim 1 , and when the holder is fitted on the user's head, images the generated image such that the user can perceive it as a virtual image.

Assignees

• Carl Zeiss Smart Optics Gmbh
• tooz technologies GmbH

Inventors

• Widulle Frank

Classifications

• G02B27/0172 Primary

  characterised by optical features · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title

• G02C7/086

  Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles · CPC title

• G02B27/017 Primary

  Head mounted · CPC title