Integrator, polarization conversion device, and display apparatus using the same

A display apparatus comprising:

• a lamp system for generating heterogeneous lights;
• an integrator for homogenizing the heterogeneous lights from the lamp system by recycling, and polarizing and outputting the homogenized lights;
• a color drum for splitting the polarized lights from the integrator into R, G and B lights, and selectively transmitting the split color lights;
• and
• an optical modulation system for modulating the color lights selectively transmitted from the color drum according to an image signal in order to form color images.

An integrator comprising:

• an incident unit where an opening which externally-inputted lights pass through is formed, and where a reflecting surface and a phase modulation device are laminated in the area where the opening has not been formed;
• a polarizing unit positioned to horizontally face the incident unit, for externally outputting polarized lights among the lights inputted to the incident unit;
• and
• a recycling unit for recycling the lights inputted to the incident unit within a certain area until they are externally outputted.

A display apparatus comprising:

• a lamp system for generating heterogeneous lights;
• a polarization conversion device having an integrator for homogenizing the heterogeneous lights from the lamp system by recycling, and polarizing and recapturing the homogenized lights, and a color wheel for splitting the polarized lights from the integrator into R, G and B lights by spiral R, G and B transmitting filters, and selectively transmitting the split lights;
• and
• an optical modulation system for modulating the color lights selectively transmitted from the polarization conversion device according to an image signal in order to form color images, the lights reflected by the color wheel being recaptured by the integrator, and constantly recycled by the integrator until transmitted.

A polarization conversion device comprising:

• an integrator for homogenizing externally-inputted heterogeneous lights by recycling, and polarizing and outputting the homogenized lights;
• a color bar filter incorporated with the integrator, for splitting the polarized lights from the integrator into R, G and B lights, and selectively transmitting the split lights;
• and
• a rotating prism rotated for changing an alignment order of the color lights outputted from the color bar filter.

A display apparatus comprising:

• a lamp system for generating heterogeneous lights;
• a polarization conversion device having an integrator for polarizing and recapturing the lights from the lamp system, a color bar filter incorporated with the integrator, for splitting the polarized lights from the integrator and selectively transmitting the split lights, and a rotating prism rotated for changing an alignment order of the color lights outputted from the color bar filter;
• and
• an optical modulation system for modulating the color lights selectively transmitted from the polarization conversion device according to an image signal in order to form color images.

A display apparatus comprising:

• a lamp system for generating heterogeneous lights;
• a polarization conversion device having an integrator for polarizing and recapturing the lights from the lamp system, and a color switch having its incorporated R, G and B cells adhered to the integrator, for splitting the polarized lights from the integrator and selectively transmitting the corresponding color lights according to an electric signal;
• and
• an optical modulation system for modulating the color lights selectively transmitted from the polarization conversion device according to an image signal in order to form color images.