IP Library › Granted Patent US 12695853
Granted Patent B2
US 12695853 · App. 19/011,545 · Granted Jul 28, 2026

Solid-state light source projector with improved color uniformity

Inventors: Chih-Shiung Chien (Taoyuan City, TW); Ming-Kuen Lin (Taoyuan City, TW)
Assignee: QISDA CORPORATION
H04N9/3152H04N9/3164
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Quick Facts
Patent No.
US 12695853
App. No.
19/011,545
Granted
Jul 28, 2026
Kind
B2
Abstract

A solid-state light source projector includes a plurality of light sources for generating light of different colors, a first homogenizing device for dispersing the light of different colors to generate a plurality of scattered light beams, a first lens module for mixing the scattered light beams to generate a plurality of mixed light beams, a second homogenizing device for homogenizing the mixed light beams to generate a plurality of parallel light beams, a light collecting module for focusing the plurality of parallel light beams to generate a plurality of focused light beams, and a reflective module for reflecting the plurality of focused light beams to output uniform light beams. The light collecting module outputs the uniform light beams in parallel.

Claims (63)

1 . A solid-state light source projector, comprising:

a plurality of light sources, configured to generate light of different colors;

a first homogenizing device, disposed on one side of the plurality of light sources, and configured to disperse the light of different colors to generate a plurality of scattered light beams;

a first lens module, disposed on one side of the first homogenizing device, and configured to mix the scattered light beams to generate a plurality of mixed light beams;

a second homogenizing device, disposed on one side of the first lens module, and configured to homogenize the mixed light beams to generate a plurality of parallel light beams;

a light collecting module, disposed on one side of the second homogenizing device, and configured to focus the plurality of parallel light beams to generate a plurality of focused light beams; and

a reflective module, disposed on one side of the light collecting module, and configured to reflect the plurality of focused light beams to output uniform light beams;

wherein the light collecting module outputs the uniform light beams in parallel.

2 . The solid-state light source projector of claim 1 , wherein the first homogenizing device is a light pipe, a solid light pipe, a single-sided lens array or a double-sided lens array.

3 . The solid-state light source projector of claim 1 , wherein the second homogenizing device is a light pipe, a solid light pipe, a single-sided lens array or a double-sided lens array.

4 . The solid-state light source projector of claim 1 , wherein the reflective module comprises a diffuser.

5 . The solid-state light source projector of claim 1 , wherein the reflective module is a stationary, moving or rotating device.

6 . The solid-state light source projector of claim 1 , further comprising:

a third homogenizing device, disposed on another side of the light collecting module, and configured to homogenize the uniform light beams to generate a white light beam;

a second lens module, disposed on one side of the third homogenizing device, and configured to transmit the white light beam;

a prism module, disposed on one side of the second lens module, and configured to reflect the white light beam;

a digital micro-mirror device (DMD), disposed on one side of the prism module, and configured to modulate the white light beam to generate a modulated light beam; and

a camera lens, disposed on another side of the prism module, and configured to output the modulated light beam;

wherein the modulated light beam is transmitted to the camera lens through the prism module.

7 . The solid-state light source projector of claim 1 , further comprising:

a third homogenizing device, disposed on another side of the light collecting module, and configured to homogenize the uniform light beams to generate a white light beam;

a second lens module, disposed on one side of the third homogenizing device, and configured to transmit the white light beam;

a prism module, disposed on one side of the second lens module, and configured to allow the white light beam to pass through;

a digital micro-mirror device (DMD), disposed on one side of the prism module, and configured to modulate the white light beam to generate a modulated light beam; and

a camera lens, disposed on another side of the prism module, and configured to output the modulated light beam;

wherein the modulated light beam is reflected to the camera lens by the prism module.

8 . The solid-state light source projector of claim 1 , further comprising:

a penetrative panel module, disposed on another side of the light collecting module, and configured to modulate the uniform light beams to generate a modulated light beam; and

a camera lens, disposed on one side of the penetrative panel module, and configured to output the modulated light beam.

9 . A solid-state light source projector, comprising:

a plurality of light sources, configured to generate light of different colors;

a first homogenizing device, disposed on one side of the plurality of light sources, and configured to disperse the light of different colors to generate a plurality of scattered light beams;

a first lens module, disposed on one side of the first homogenizing device, and configured to mix the plurality of scattered light beams to generate a plurality of first mixed light beams;

a reflective component, disposed on one side of the first lens module, and configured to reflect the plurality of first mixed light beams;

a second lens module, disposed on one side of the reflective component, and configured to mix the plurality of first mixed light beams to generate a plurality of second mixed light beams;

a second homogenizing device, disposed on one side of the second lens module, and configured to homogenize the plurality of second mixed light beams to generate a plurality of parallel light beams;

a light collecting module, disposed on one side of the second homogenizing device, and configured to focus the plurality of parallel light beams to generate a plurality of focused light beams; and

a reflective module, disposed on one side of the light collecting module, and configured to reflect the focused light beams to output uniform light beams.

10 . The solid-state light source projector of claim 9 , wherein the first homogenizing device is a light pipe, a solid light pipe, a single-sided lens array or a double-sided lens array.

11 . The solid-state light source projector of claim 9 , wherein the second homogenizing device is a light pipe, a solid light pipe, a single-sided lens array or a double-sided lens array.

12 . The solid-state light source projector of claim 9 , wherein the reflective module comprises a diffuser.

13 . The solid-state light source projector of claim 9 , wherein the reflective module is a stationary, moving or rotating device.

14 . The solid-state light source projector of claim 9 , further comprising:

a third homogenizing device, disposed on another side of the light collecting module, and configured to homogenize the uniform light beams to generate a white light beam;

a third lens module, disposed on one side of the third homogenizing device, and configured to transmit the white light beam;

a prism module, disposed on one side of the third lens module, and configured to reflect the white light beam;

a digital micro-mirror device (DMD), disposed on one side of the prism module, and configured to modulate the white light beam to generate a modulated light beam; and

a camera lens, disposed on another side of the prism module, and configured to output the modulated light beam;

wherein the modulated light beam is transmitted to the camera lens through the prism module.

15 . The solid-state light source projector of claim 9 , further comprising:

a third homogenizing device, disposed on another side of the light collecting module, and configured to homogenize the uniform light beams to generate a white light beam;

a third lens module, disposed on one side of the third homogenizing device, and configured to transmit the white light beam;

a prism module, disposed on one side of the third lens module, and configured to allow the white light beam to pass through;

a digital micro-mirror device (DMD), disposed on one side of the prism module, and configured to modulate the white light beam to generate a modulated light beam; and

a camera lens, disposed on another side of the prism module, and configured to output the modulated light beam;

wherein the modulated light beam is reflected to the camera lens by the prism module.

16 . The solid-state light source projector of claim 9 , further comprising:

a penetrative panel module, disposed on another side of the light collecting module, and configured to modulate the uniform light beams to generate a modulated light beam; and

a camera lens, disposed on one side of the penetrative panel module, and configured to output the modulated light beam.

17 . The solid-state light source projector of claim 9 , further comprising:

a concave mirror module, disposed on another side of the light collecting module, and configured to focus the uniform light beams to generate a focused light beam;

a digital micro-mirror device (DMD), disposed on one side of the concave mirror module, and configured to modulate the focused light beam to generate a modulated light beam; and

a camera lens, disposed on one side of the DMD, and configured to output the modulated light beam.