CN202013451U

CN202013451U - 3D projection system

Info

Publication number: CN202013451U
Application number: CN201020501580XU
Authority: CN
Inventors: 刘美鸿
Original assignee: ZHEJIANG YISIDA DISPLAY TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG YISIDA DISPLAY TECHNOLOGY Co Ltd
Priority date: 2010-08-23
Filing date: 2010-08-23
Publication date: 2011-10-19
Anticipated expiration: 2020-08-23

Abstract

The utility model relates to the field of projection equipment, especially a 3D projection system formed by two conventional LCOS display chips (screens). The optical system is composed of two LCOS display chips, a PBS prism, a 1/2 zone plate, an optical source system and an imaging lens. The 3D projection optical system includes a same optical source and a same imaging lens, realizes 3D function by optical polarizing performance, and has no requirements for high chip refresh frequency rate, thus lowering the manufacture difficulty of the chips. The optical system is simple in structure, therefore the assembly adjusting is easy. The optical system is characterized in that only one optical source is needed to form the 3D optical system, making the structure simple; only one projection optical lens is needed to form the 3D optical system, making adjustment needless; the requirement of 3D function for chip refresh frequency performance is lower; the light use efficiency of the light source is improved; and the adjustment is convenient, since the structure is simple.

Description

A kind of 3D optical projection system

Technical field

The utility model relates to the projector equipment field, relates in particular to a kind of 3D optical projection system that a kind of two conventional LCOS display chips of use (screen) are realized.

Background technology

Continuous development along with display technique, existing 3D projection optical system mainly is to improve the refresh rate of DLP display screen to realizing the 3D projecting function by time division way then more than the 120HZ, but for the LCOS display screen, owing to will accomplish that at present above obviously difficulty of 120HZ and cost are all very high, be not easy to realize.So generally adopt at present the dual-projection machine to realize the 3D projecting function with the mode of polaroid, obviously cost is also very high like this, needs special assembling school to transfer during use, and makes the beholder produce spinning sensation because of the school is out of tune easily.

Based on the weak point of existing 3D projection aspect, the inventor has developed the utility model " a kind of 3D optical projection system " in order to address the above problem.

The utility model content

The utility model at above-mentioned the deficiencies in the prior art technical matters to be solved is: a kind of 3D optical projection system that provides a kind of two conventional LCOS display chips of use (screen) to realize.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of 3D optical projection system, two LCOS chips are realized the optical system of 3D projecting functions, this optical system is by two LCOS chips and PBS prism and one 1/2 zone plate, adds that simultaneously light-source system and imaging lens formed two LCOS chip 3D projection optical systems.The light that light source sends enters the PBS prism behind the collimation of collimating mirror, the light that enters the PBS prism is divided into two-way polarization light (P light and S light) through the PBS prism, and one the tunnel is through PBS prismatic reflection polarized light P light, and one the tunnel is through PBS prism transmission polarized light S light; Wherein P light directly shines on the LCOS chip through the PBS prismatic reflection, becomes polarization S light through the reflection of LCOS chip and enters the PBS prism once more, and S light directly sees through the PBS prism and enters imaging lens, through the picture of imaging projection lens projection S light; The S light that an other Reuter penetrates, make its change of polarized direction become P light by 1/2 zone plate, become S light after the chip reflection, S light becomes P light again after 1/2 zone plate break-in, P light enters projection lens behind the PBS prismatic reflection, project into P light picture through the imaging projection lens.These two pictures are imaged on same position, utilize polaroid glasses to realize the different picture of right and left eyes, again through processing of circuit right and left eyes picture, thereby realize LCOS chip 3D projection.

Described pair of LCOS chip comprises various imager chips.

Described pair of LCOS chip is through same lens imaging.

Described pair of LCOS chip realized the optical projection system of 3D function through the picture with the lens imaging same position through processing of circuit.

Described two LCOS chip projection optical systems of utilizing polaroid glasses to realize the 3D function.

Described prism is by the PBS prism, thoroughly anti-S light of P light or the saturating anti-P light of S light (corresponding LCOS surface film correspondence simultaneously).

Utilize polarizing properties to realize 3D function projection optical system, this optical system is by two LCOS chips and PBS prism and one 1/2 zone plate, adds that simultaneously light-source system and imaging lens formed two LCOS chip 3D polarisation projection optical systems.Optical principle: the light that light source sends enters the PBS prism behind collimation, the light that enters the PBS prism is divided into two-way polarization light (P light and S light) through the PBS prism, and one the tunnel is through PBS prismatic reflection polarized light P light, and one the tunnel is through PBS prism transmission polarized light S light; Wherein P light directly shines on the LCOS chip through the PBS prismatic reflection, becomes polarization S light through the reflection of LCOS chip and enters the PBS prism once more, and S light directly sees through the PBS prism and enters imaging lens, through the picture of imaging projection lens projection S light; The S light that an other Reuter penetrates, make its change of polarized direction become P light by 1/2 zone plate, become S light after the chip reflection, S light becomes P light again after 1/2 zone plate break-in, P light enters projection lens behind the PBS prismatic reflection, project into P light picture through the imaging projection lens.These two pictures are imaged on same position, utilize polaroid glasses to realize the different picture of right and left eyes, again through processing of circuit right and left eyes picture, thereby realize LCOS chip 3D projection.

The beneficial effect of a kind of 3D optical projection system of the utility model is:

The utility model 3D projection optical system is same light source and same imaging lens, utilize the polarizing properties of optics to realize the optical system of 3D function, less demanding to the refreshing frequency of chip simultaneously, the manufacture difficulty of chip has been fallen at the end, optical system structure is simple, and assembling school capacity transfer is easy.It has following characteristics:

1), form polarisation 3D optical system by same light source, it is simple in structure.

2), by the 3D optical system of same projection optics camera lens, need not to adjust.

3), alternate manner realizes that the refreshing frequency of the LCOS chip of 3D function is greater than or equal to 120HZ, the utility model is two LCOS chips, the LCOS refreshing frequency is can realize the 3D function more than the 60HZ, falls the requirement of 3D function in the end to the chip refresh frequency performance greatly.

4), improved the service efficiency of the light of light source.Because of having adopted the chip of two LCOS, make nearly all light of light source can both arrive on the screen, the right and left eyes picture all is imaged on the same screen.

5), adopt same projection optics camera lens and light source camera lens, the school is transferred convenient, and is simple in structure.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a LCOS imaging schematic diagram of the present utility model.

Embodiment

The utility model is to implement like this:

A kind of 3D optical projection system is by two LCOS chips and PBS prism and one 1/2 zone plate, adds that simultaneously light-source system and imaging lens formed two LCOS chip 3D projection optical systems.The light that light source sends enters the PBS prism behind the collimation of collimating mirror, the light that enters the PBS prism is divided into two-way polarization light (P light and S light) through the PBS prism, and one the tunnel is through PBS prismatic reflection polarized light P light, and one the tunnel is through PBS prism transmission polarized light S light; Wherein P light directly shines on the LCOS chip through the PBS prismatic reflection, becomes polarization S light through the reflection of LCOS chip and enters the PBS prism once more, and S light directly sees through the PBS prism and enters imaging lens, through the picture of imaging projection lens projection S light; The S light that an other Reuter penetrates, make its change of polarized direction become P light by 1/2 zone plate, become S light after the chip reflection, S light becomes P light again after 1/2 zone plate break-in, P light enters projection lens behind the PBS prismatic reflection, project into P light picture through the imaging projection lens.These two pictures are imaged on same position, utilize polaroid glasses to realize the different picture of right and left eyes, again through processing of circuit right and left eyes picture, thereby realize LCOS chip 3D projection.In the present embodiment, light source is same light source.Camera lens is same projection imaging.Prism is by the PBS prism, thoroughly anti-S light of P light or the saturating anti-P light of S light (corresponding LCOS surface film correspondence simultaneously).

In Fig. 1, a kind of 3D optical projection system, comprise light-source system 10 and imaging lens 20, described light-source system 10 positive front sides are provided with a PBS prism 30, the front side of PBS prism 30 1/2 zone plate 40 that has been sticked, be provided with a LCOS chip 50 in the place ahead of 1/2 zone plate 40, be provided with the 2nd LCOS chip 60 in the below of PBS prism 30, imaging lens 20 is located at the top of PBS prism 30, the light that light-source system 10 sends enters PBS prism 30 behind the collimation of collimating mirror, the light that enters PBS prism 30 is divided into one tunnel original polarization P light and the one tunnel original polarization S light through the PBS prism transmission through 30 reflections of PBS prism through PBS prism 30; Wherein original polarization P light directly shines on the 2nd LCOS chip 60 through 30 reflections of PBS prism, become secondary polarization S light through 60 reflections of the 2nd LCOS chip and enter PBS prism 30 once more, secondary polarization S light directly sees through PBS prism 30 and enters imaging lens 20, through the picture of imaging projection lens projection S light; Original polarization S light through 30 transmissions of PBS prism, make its change of polarized direction become secondary polarization P light by 1/2 zone plate 40, after a LCOS chip 50 reflections, become secondary polarization S light, secondary polarization S light becomes secondary polarization P light again after 40 break-ins of 1/2 zone plate, secondary polarization P light enters projection lens 20 after 30 reflections of PBS prism, project into P light picture through the imaging projection lens.PBS prism 30 is anti-S light of P light or the saturating anti-P light of S light thoroughly.The one LCOS chip 50 and the 2nd LCOS chip 60 comprise various imager chips.The one LCOS chip 50 and the 2nd LCOS chip 60 are realized the optical projection system of 3D function through the picture with the lens imaging same position through processing of circuit.In the present embodiment, light source is same light source.Camera lens is same projection imaging.Prism is by the PBS prism, thoroughly anti-S light of P light or the saturating anti-P light of S light (corresponding LCOS surface film correspondence simultaneously).

The above, it only is the preferred embodiment of a kind of 3D optical projection system of the utility model, be not that technical scope of the present utility model is imposed any restrictions, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model above any trickle modification, equivalent variations and modification that embodiment did.

Claims

1. 3D optical projection system, comprise light-source system, it is characterized in that: comprise that also two LCOS display chips, PBS prism, 1/2 zone plate and form as camera lens, the light that light source sends enters the PBS prism behind the collimation of collimating mirror, the light that enters the PBS prism is divided into the two-way polarization light through the PBS prism, one the tunnel is through PBS prismatic reflection polarized light P light, and one the tunnel is through PBS prism transmission polarized light S light; Wherein P light directly shines on the LCOS chip through the PBS prismatic reflection, becomes polarization S light through the reflection of LCOS chip and enters the PBS prism once more, and S light directly sees through the PBS prism and enters imaging lens, through the picture of imaging projection lens projection S light; The S light that an other Reuter penetrates, make its change of polarized direction become P light by 1/2 zone plate, after the chip reflection, become S light, S light becomes P light again after 1/2 zone plate break-in, P light enters projection lens behind the PBS prismatic reflection, project into P light picture through the imaging projection lens, these two pictures are imaged on same position.

2. a kind of 3D optical projection system according to claim 1 is characterized in that: described pair of LCOS display chip comprises various display chips or display screen.

3. a kind of 3D optical projection system according to claim 1 is characterized in that described pair of LCOS display chip is through same lens imaging.

4. a kind of 3D optical projection system according to claim 1 is characterized in that described pair of LCOS display chip through the picture with the lens imaging same position, through the optical projection system of processing of circuit realization 3D function.

5. a kind of 3D optical projection system according to claim 1 and 2 is characterized in that the projection imaging of described pair of LCOS display chip and utilizes polaroid glasses to observe the realization 3D effect.