Display apparatus and display system

A display system, comprising a wideband light source and a display apparatus, wherein the display apparatus comprises:

• a narrowband light source configured to emit narrowband light with an elliptical distribution;
• a reflection device comprising a reflection surface, wherein the reflection surface is configured to reflect the narrowband light to obtain light to be modulated;
• and
• a light modulation device configured to modulate the light to be modulated, to obtain image light of an image to be displayed, wherein the light modulation device comprises a modulating surface configured to receive the light to be modulated, the modulating surface is at a preset angle to an optical axis of the light to be modulated such that the light to be modulated forms a circular light spot on the modulating surface, and
• wherein the wideband light source is configured to emit wideband light for modulation for an image in a first color gamut, and the narrowband light emitted from the narrowband light source is used for modulation for an image in a second color gamut, wherein the second color gamut covers the first color gamut and the second color gamut has a part beyond the first color gamut, and the wideband light and the narrowband light are combined by etendue to irradiate the reflection device.

A display apparatus, comprising:

• a narrowband light source configured to emit narrowband light with an elliptical distribution;
• a reflection device comprising a reflection surface, wherein the reflection surface is configured to reflect the narrowband light to obtain light to be modulated;
• and
• a light modulation device configured to modulate the light to be modulated, to obtain image light of an image to be displayed, wherein the light modulation device comprises a modulating surface configured to receive the light to be modulated, the modulating surface is at a preset angle to an optical axis of the light to be modulated such that the light to be modulated forms a circular light spot on the modulating surface, wherein the light to be modulated from the reflection surface is directly incident on the modulating surface.