US 2019/0293952 A1Published application

3d projection system using laser light sources

AssigneeDolby Laboratories Licensing Corporation

InventorMartin J. RICHARDS

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Abstract

Laser or narrow band light sources (e.g., red, green, and blue) are utilized to form left (e.g., R1, G1, B1) and right (e.g., R2, G2, B2) images of a 3D projection. Off-axis viewing of the projections which has the potential to cause crosstalk and/or loss of energy/brightness in any channel or color, is eliminated (or reduced to only highly oblique viewing angles) via the combined use of any of guard bands between light bands of adjacent channels, curvature of viewing filters, and selection of passband wavelengths that maximize usability of the passband as it “shifts” due to varying or increasing angles of off-axis viewing. Implemented with any number of light sources, the light sources selected may also be converted to showing 2D images where the additional light sources are utilized to affect a desirable increase in color gamut.

Claims20

Dependent claims

A display system configured to display 3D images comprising right and left images composed of spectrally separated lights, the display system comprising:

an image rendering device;
and
3D viewing glasses comprising a left eye filter and a right eye filter, the left eye filter configured to transmit a set of at least one projected narrowband wavelength corresponding to a left view of a 3D image rendered by the image rendering device, the right eye filter configured to transmit a set of at least one projected narrowband wavelength corresponding to a right view of the 3D image rendered by the image rendering device, the filters configured to pass their corresponding set of at least one projected narrowband wavelength to a viewer when viewed through the glasses at normal angles and when viewed through the glasses at off-normal angles;
wherein pass areas of the filters are constructed so that, when viewed normally, the projected narrowband wavelengths are transmitted at a shortest wavelength position of the passband that also provides a predetermined amount of transmission of the light through the passband.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 16/440,227Filed 13 Jun 2019
Priority: 14 Mar 2011
Published: 26 Sep 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G02B 30/34
By providing first and second parallax images to an observer's left and right eyes: stereoscopes providing a stereoscopic pair of separated images…
G02B 30/23
Of the stereoscopic type: using wavelength separation, e.g. using anaglyph techniques
H04N 13/324
Image reproducers: colour aspects
H04N 13/334
Displays for viewing with the aid of special glasses or head-mounted displays [HMD]: using spectral multiplexing

Family

Application61/452,638Us provisional application · filed 14 Mar 2011
Application14/004,355Continuation · filed 10 Sep 2013
Application15/611,696Continuation · filed 1 Jun 2017
Application16/440,227Continuation
US 10,359,639 B2Related patent
US 11,106,051 B2Related patent
US 2013/0342904 A1Published application
US 2017/0336645 A1Published application
US 9,696,558 B2Related patent
US 2019/0293952 A1This patent

From the US filing history. Foreign family members aren’t listed.