1. A reflective liquid crystal display apparatus comprising:
a polarization beam splitter having a polarization split film used as both a polarizer and an analyzer, wherein the polarization beam splitter has a polarization axis having a polarization axis direction;
a reflective liquid crystal display device;
a quarter wave plate disposed between the polarization beam splitter and the reflective liquid crystal display device; and
a projection optical system,
wherein the quarter wave plate is positioned such that either the slow axis or the fast axis of the quarter wave plate is generally parallel to the polarization axis direction, so that the absolute value of phase difference of diffracted light generated by the reflective liquid crystal display device in a black display state is reduced by the phase difference of the quarter wave plate, and that the amount of stray light of the diffracted light guided from the polarizing beam splitter to the projection optical system decreases.
2. A reflective liquid crystal display apparatus comprising:
a polarization beam splitter having a polarization split film;
a reflective liquid crystal display device having a first optical axis;
a quarter wave plate disposed between the polarization beam splitter and the reflective liquid crystal display device; and
an illumination optical system configured for guiding a light flux from a light source in a converged state to the polarization beam splitter, and also illuminating the reflective liquid crystal display device with light from the light source via the polarization beam splitter and the quarter wave plate;
wherein the illumination optical system has a second optical axis which is inclined with respect to the polarization split film;
and wherein, with the positive phase difference provided to convert linear polarized light into right-handed circling polarized light or elliptic polarized light and the negative phase difference provided to convert linear polarized light into left-handed circling polarized light or elliptic polarized light, the phase difference which the reflective liquid crystal display device in a black display state of the reflective liquid crystal display apparatus provides to the diffracted light occurring at the reflective liquid crystal display device is positive or zero,
and wherein, with the polarization direction of S-polarized light defined by the second optical axis and the polarization split film as the S-polarization direction, the polarization split film which receives the light flux in a converged state has a first region which emits light having a polarization direction inclined clockwise with respect to the S-polarization direction as viewed from the side of the reflective liquid crystal display device, and a second region which emits light having a polarization direction inclined counter-clockwise with respect to the S-polarization direction as viewed from the side of the reflective liquid crystal display device,
and wherein the phase difference, which the reflective liquid crystal display device provides to the first diffracted light emitted from a point on the first optical axis and cast into the first region, is smaller than the phase difference which the reflective liquid crystal display device provides to the second diffracted light emitted from a point on the first optical axis and cast into the second region,
and wherein the quarter wave plate can be positioned such that the direction of the slow axis of the quarter wave plate and the S-polarization direction are generally parallel.
3. A reflective liquid crystal display apparatus comprising:
a polarization beam splitter having a polarization split film;
a reflective liquid crystal display device;
a quarter wave plate disposed between the polarization beam splitter and the reflective liquid crystal display device having a first optical axis; and
an illumination optical system configured for guiding a light flux from a light source in a converged state to the polarization beam splitter, and also illuminating the reflective liquid crystal display device with light from the light source via the polarization beam splitter and the quarter wave plate,
wherein the illumination optical system has a second optical axis which is inclined with respect to the polarization split film,
and wherein, with the positive phase difference provided to convert linear polarized light into right-handed circling polarized light or elliptic polarized light and the negative phase difference provided to convert linear polarized light into left-handed circling polarized light or elliptic polarized light, the phase difference which the reflective liquid crystal display device in a black display state of the reflective liquid crystal display apparatus provides to the diffracted light occurring at the reflective liquid crystal display device is positive or zero,
and wherein, with the polarization direction of S-polarized light defined by the second optical axis and the polarization split film as the S-polarization direction, the polarization split film which receives the light flux in a converged state has a first region which emits light having a polarization direction inclined clockwise with respect to the S-polarization direction as viewed from the side of the reflective liquid crystal display device, and a second region which emits light having a polarization direction inclined counter-clockwise with respect to the S-polarization direction as viewed from the side of the reflective liquid crystal display device,
and wherein the phase difference, which the reflective liquid crystal display device provides to the first diffracted light emitted from a point on the first optical axis and cast into the first region, is greater than the phase difference which the reflective liquid crystal display device provides to the second diffracted light emitted from a point on the first optical axis and cast into the second region;
and wherein the quarter wave plate is positioned such that the direction of the fast axis of the quarter wave plate and the S-polarization direction are generally parallel.
4. A reflective liquid crystal display apparatus comprising:
a polarization beam splitter having a polarization split film;
a reflective liquid crystal display device having a first optical axis;
a quarter wave plate disposed between the polarization beam splitter and the reflective liquid crystal display device; and
an illumination optical system configured for guiding a light flux from a light source in a converged state to the polarization beam splitter, and also illuminating the reflective liquid crystal display device with light from the light source via the polarization beam splitter and the quarter wave plate;
wherein the illumination optical system has a second optical axis which is inclined with respect to the polarization split film;
and wherein, with the positive phase difference provided to convert linear polarized light into right-handed circling polarized light or elliptic polarized light and the negative phase difference provided to convert linear polarized light into left-handed circling polarized light or elliptic polarized light, the phase difference which the reflective liquid crystal display device in a black display state of the reflective liquid crystal display apparatus provides to the diffracted light occurring at the reflective liquid crystal display device is negative or zero,
and wherein, with the polarization direction of S-polarized light defined by the second optical axis and the polarization split film as the S-polarization direction, the polarization split film which receives the light flux in a converged state has a first region which emits light having a polarization direction inclined clockwise with respect to the S-polarization direction as viewed from the side of the reflective liquid crystal display device, and a second region which emits light having a polarization direction inclined counter-clockwise with respect to the S-polarization direction as viewed from the side of the reflective liquid crystal display device,
and wherein the phase difference, which the reflective liquid crystal display device provides to the first diffracted light emitted from a point on the first optical axis and cast into the first region, is smaller than the phase difference which the reflective liquid crystal display device provides to the second diffracted light emitted from a point on the first optical axis and cast into the second region;
and wherein the quarter wave plate is positioned such that the direction of the fast axis of the quarter wave plate and the S-polarization direction are generally parallel.
5. A reflective liquid crystal display apparatus comprising:
a polarization beam splitter having a polarization split film;
a reflective liquid crystal display device having a first optical axis;
a quarter wave plate disposed between the polarization beam splitter and the reflective liquid crystal display device; and
an illumination optical system configured for guiding a light flux from a light source in a converged state to the polarization beam splitter, and also illuminating the reflective liquid crystal display device with light from the light source via the polarization beam splitter and the quarter wave plate;
wherein the illumination optical system has a second optical axis which is inclined with respect to the polarization split film;
and wherein, with the positive phase difference provided to convert linear polarized light into right-handed circling polarized light or elliptic polarized light and the negative phase difference provided to convert linear polarized light into left-handed circling polarized light or elliptic polarized light, the phase difference which the reflective liquid crystal display device in a black display state of the reflective liquid crystal display apparatus provides to the diffracted light occurring at the reflective liquid crystal display device is negative or zero;
and wherein, with the polarization direction of S-polarized light defined by the second optical axis and the polarization split film as the S-polarization direction, the polarization split film which receives the light flux in a converged state has a first region which emits light having a polarization direction inclined clockwise with respect to the S-polarization direction as viewed from the side of the reflective liquid crystal display device, and a second region which emits light having a polarization direction inclined counter-clockwise with respect to the S-polarization direction as viewed from the side of the reflective liquid crystal display device;
and wherein the phase difference, which the reflective liquid crystal display device provides to the first diffracted light emitted from a point on the first optical axis and cast into the first region, is greater than the phase difference which the reflective liquid crystal display device provides to the second diffracted light emitted from a point on the first optical axis and cast into the second region;
and wherein the quarter wave plate is positioned such that the direction of the slow axis of the quarter wave plate and the S-polarization direction are generally parallel.
6. The apparatus according to claim 2, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of S-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the S-polarization plane, and with a plane containing the polarization direction of P-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the P-polarization plane, the intensity of incident light cast into the reflective liquid crystal display device through the S-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the P-polarization plane.
7. The apparatus according to claim 2, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of S-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the S-polarization plane, and with a plane passing through the second optical axis and assuming a 45\xb0 angle to the S-polarization plane as a 45\xb0 plane, the intensity of incident light cast into the reflective liquid crystal display device through the S-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the 45\xb0 plane.
8. The apparatus according to claim 2, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of P-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the P-polarization plane, and with a plane passing through the second optical axis and assuming a 45\xb0 angle to the P-polarization plane as a 45\xb0 plane, the intensity of incident light cast into the reflective liquid crystal display device through the P-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the 45\xb0 plane.
9. The apparatus according to claim 2, further comprising:
a first integrator, configured with a plurality of first lenses arrayed in a first direction intersecting the second optical axis, for splitting light from the light source into a plurality of light fluxes;
a second integrator wherein are arrayed a plurality of second lenses corresponding to the plurality of first lenses;
a first optical system configured for irradiating the plurality of light fluxes emitted from the second integrator on the reflective liquid crystal display device in a superimposed manner; and
a second optical system having optical power in a second direction orthogonal to the first direction, configured for compressing the diameter of the light flux from the light source within a plane including the second direction, guided to the reflective liquid crystal display device.
10. The apparatus according to claim 3, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of S-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the S-polarization plane, and with a plane containing the polarization direction of P-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the P-polarization plane, the intensity of incident light cast into the reflective liquid crystal display device through the S-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the P-polarization plane.
11. The apparatus according to claim 3, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of S-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the S-polarization plane, and with a plane passing through the second optical axis and assuming a 45\xb0 angle to the S-polarization plane as a 45\xb0 plane, the intensity of incident light cast into the reflective liquid crystal display device through the S-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the 45\xb0 plane.
12. The apparatus according to claim 3, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of P-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the P-polarization plane, and with a plane passing through the second optical axis and assuming a 45\xb0 angle to the P-polarization plane as a 45\xb0 plane, the intensity of incident light cast into the reflective liquid crystal display device through the P-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the 45\xb0 plane.
13. The apparatus according to claim 3, further comprising:
a first integrator, configured with a plurality of first lenses arrayed in a first direction intersecting the second optical axis, for splitting light from the light source into a plurality of light fluxes;
a second integrator wherein are arrayed a plurality of second lenses corresponding to the plurality of first lenses;
a first optical system configured for irradiating the plurality of light fluxes emitted from the second integrator on the reflective liquid crystal display device in a superimposed manner; and
a second optical system having optical power in a second direction orthogonal to the first direction, configured for compressing the diameter of the light flux from the light source within a plane including the second direction, guided to the reflective liquid crystal display device.
14. The apparatus according to claim 4, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of S-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the S-polarization plane, and with a plane containing the polarization direction of P-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the P-polarization plane, the intensity of incident light cast into the reflective liquid crystal display device through the S-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the P-polarization plane.
15. The apparatus according to claim 4, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of S-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the S-polarization plane, and with a plane passing through the second optical axis and assuming a 45\xb0 angle to the S-polarization plane as a 45\xb0 plane, the intensity of incident light cast into the reflective liquid crystal display device through the S-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the 45\xb0 plane.
16. The apparatus according to claim 4, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of P-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the P-polarization plane, and with a plane passing through the second optical axis and assuming a 45\xb0 angle to the P-polarization plane as a 45\xb0 plane, the intensity of incident light cast into the reflective liquid crystal display device through the P-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the 45\xb0 plane.
17. The apparatus according to claim 4, further comprising:
a first integrator, configured with a plurality of first lenses arrayed in a first direction intersecting the second optical axis, for splitting light from the light source into a plurality of light fluxes;
a second integrator wherein are arrayed a plurality of second lenses corresponding to the plurality of first lenses;
a first optical system configured for irradiating the plurality of light fluxes emitted from the second integrator on the reflective liquid crystal display device in a superimposed manner; and
a second optical system having optical power in a second direction orthogonal to the first direction, configured for compressing the diameter of the light flux from the light source within a plane including the second direction, guided to the reflective liquid crystal display device.
18. The apparatus according to claim 5, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of S-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the S-polarization plane, and with a plane containing the polarization direction of P-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the P-polarization plane, the intensity of incident light cast into the reflective liquid crystal display device through the S-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the P-polarization plane.
19. The apparatus according to claim 5, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of S-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the S-polarization plane, and with a plane passing through the second optical axis and assuming a 45\xb0 angle to the S-polarization plane as a 45\xb0 plane, the intensity of incident light cast into the reflective liquid crystal display device through the S-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the 45\xb0 plane.
20. The apparatus according to claim 5, wherein, of the incident light flux from the polarization beam splitter converging at a point on the first optical axis, with a plane containing the polarization direction of P-polarized light defined by the second optical axis and the polarization split film of the polarization beam splitter as the P-polarization plane, and with a plane passing through the second optical axis and assuming a 45\xb0 angle to the P-polarization plane as a 45\xb0 plane, the intensity of incident light cast into the reflective liquid crystal display device through the P-polarization plane is greater than the intensity of incident light cast into the reflective liquid crystal display device through the 45\xb0 plane.
21. The apparatus according to claim 5, further comprising:
a first integrator, configured with a plurality of first lenses arrayed in a first direction intersecting the second optical axis, for splitting light from the light source into a plurality of light fluxes;
a second integrator wherein are arrayed a plurality of second lenses corresponding to the plurality of first lenses;
a first optical system configured for irradiating the plurality of light fluxes emitted from the second integrator on the reflective liquid crystal display device in a superimposed manner; and
a second optical system having optical power in a second direction orthogonal to the first direction, configured for compressing the diameter of the light flux from the light source within a plane including the second direction, guided to the reflective liquid crystal display device.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A jack assembly comprising:
a first plurality of jacks and a second plurality of jacks that is positioned below the first plurality of jacks, each jack including a front end and a back end, each jack defining a port in the front end for receiving a plug and spring contacts within the port for making electrical contact with the plug, each jack further including insulation displacement contacts projecting in a direction from the front end to the back end of the jack, wherein the port and the spring contacts associated with the port of each of the jacks of the first plurality of jacks are staggered in a front to back direction with respect to the port and spring contacts associated with the port of each of the jacks of the second plurality of jacks such that front faces of the first plurality of jacks define a first straight line positioned at a first depth and front faces of the second plurality of jacks define a second straight line that is positioned at a second depth that is different than the first depth in the front to back direction, wherein a jack of the first plurality of jacks and a jack of the second plurality of jacks define adjacent jacks, wherein the adjacent jacks are vertically offset to each other, horizontally offset to each other, and staggered with respect to each other in a front to back direction.
2. A jack assembly according to claim 1, wherein each of the first plurality of jacks and the second plurality of jacks are assembled in rows of twelve jacks.
3. A jack assembly according to claim 2, wherein the rows of jacks are configured to fit in a rack unit of a 19-inch standard telecommunications rack.
4. A jack assembly according to claim 1, wherein the jacks include RJ-45 jacks.
5. A jack assembly according to claim 1, wherein at least one of the jacks includes a shield section on a surface of the jack.
6. A jack assembly according to claim 1, wherein the adjacent jacks are vertically offset a distance of at least about 0.5 inches measured from centerpoints of the jacks.
7. A jack assembly according to claim 1, wherein the adjacent jacks are horizontally offset a distance of at least about 0.5 inches measured from centerpoints of the jacks.
8. A jack assembly according to claim 1, wherein the adjacent jacks are staggered in a front to back direction such that there is no overlap between the spring contacts and the insulation displacement contacts of the adjacent jacks.
9. A method of reducing alien crosstalk between two adjacent jacks provided on a telecommunications panel, the method comprising:
(a) mounting a first plurality of jacks and a second plurality of jacks on the panel such that the second plurality of jacks is positioned below the first plurality of jacks, wherein each jack includes a front end and a back end, each jack defining a port in the front end for receiving a plug and spring contacts within the port for making electrical contact with the plug, each jack further including insulation displacement contacts projecting in a direction from the front end to the back end of the jack, wherein the port and the spring contacts associated with the port of each of the jacks of the first plurality of jacks are staggered in a front to back direction with respect to the port and spring contacts associated with the port of each of the jacks of the second plurality of jacks such that front faces of the first plurality of jacks define a first straight line positioned at a first depth and front faces of the second plurality of jacks define a second straight line that is positioned at a second depth that is different than the first depth in the front to back direction, wherein a jack of the first plurality of jacks and a jack of the second plurality of jacks define the adjacent jacks, wherein the adjacent jacks are vertically offset to each other, horizontally offset to each other, and staggered at different depths from front to back with respect to each other.