CN201467380U

CN201467380U - Optical transceiver of LCOS digital television

Info

Publication number: CN201467380U
Application number: CN2009201246446U
Authority: CN
Inventors: 汤季中
Original assignee: ZHEJIANG HOISHING TECHNOLOGY CO LTD
Current assignee: ZHEJIANG HOISHING TECHNOLOGY CO LTD
Priority date: 2009-07-13
Filing date: 2009-07-13
Publication date: 2010-05-12
Anticipated expiration: 2019-07-13

Abstract

The utility model relates to an optical transceiver, particularly to an optical transceiver of an LCOS digital television. The optical transceiver of the LCOS digital television comprises a lighting source, a condensing lens, a light filter, a dichroic mirror, an LCOS miniature device, a light combining prism and a projection lens, wherein the LCOS miniature device is provided with an ITO conductive glass baseplate and a liquid crystal layer, the condensing lens, the light filter, the dichroic mirror, the LCOS miniature device, the light combining prism and the projection lens are arranged in a cubic shell, and the LCOS miniature device is a reflective silicon baseplate provided with a reflective coating. The utility model solves the problems of lower light utilization ratio and deficient picture brightness in the prior art.

Description

A kind of ray machine of LCOS Digital Television

Technical field

The utility model relates to a kind of ray machine, particularly a kind of ray machine of LCOS Digital Television.

Background technology

The ray machine of present most of Digital Television adopts penetration shadow casting technique, makes the utilance not high (about 3%) of light, the image brilliance deficiency; Adopt the two glass substrate structures of the many employings of ray machine of penetration shadow casting technique, yet the a-si tft array technical sophistication on the glass substrate is not mature enough.

Also have many ray machines to adopt one chip Color Wheel light engine at present, one chip Color Wheel light engine is with atwirl ColorSwitch color interchanger white light to be formed in proper order red, blue, green glow, and with primaries with drive red that formula produces, blue, green picture, form the color separation image synchronously, the characteristic that persists by human eye vision again, produce colored projected picture at human brain at last, though therefore one chip Color Wheel light engine system architecture is fairly simple, and the space of light engine is also less relatively, yet certain difficulty is arranged technically, with Color Wheel colour wheel, the light source of white light after polarization only is previous 1/3, brightness obviously reduces, in addition, because the LCOS panel must be red, blue, green picture switches resultant image down fast, so the requirement of panel reaction speed is higher, and feasible difficulty of producing also phase shape improves.

The utility model content

The purpose of this utility model provide a kind of light utilization efficiency to, technology maturation, the ray machine that produces the full picture of high brightness and color arranged.

Above-mentioned technical purpose of the present utility model is achieved by the following technical programs: a kind of ray machine of LCOS Digital Television, comprise lighting source, collector lens, filter, dichronic mirror, be provided with LCOS microdevice, light-combining prism, the projecting lens of ITO conducting glass substrate and liquid crystal layer, described collector lens, filter, dichronic mirror, the LCOS microdevice, light-combining prism, the projecting lens that are provided with ITO conducting glass substrate and liquid crystal layer are arranged in the cube casing, and described LCOS microdevice is the Reflective mode silicon substrate that is provided with reflectance coating.Lighting source produces a branch of white light, light beam passes a collector lens (being responsible for focusing on and aiming at light), pass a filter again and (cross filtering ultraviolet or infrared light, can make other elements avoid infringement like this), light beam passes a series of dichronic mirrors, produce three beams coloured light (ruddiness, green glow and blue light), the coloured light that produces contacts with one of three LCOS microdevices respectively simultaneously, the light that the LCOS microdevice reflects passes a light-combining prism, this light-combining prism can be combined these light, then, light-combining prism is in synthetic ray cast to a projecting lens.Adopt silicon substrate to be because monocrystalline silicon has the good electron mobility, and monocrystalline silicon can form thinner circuit, make ray machine be easy to generate the picture of high-res.Adopt the reflecting light utilization ratio can reach more than 80%, compare with 3% of penetration shadow casting technique light utilization efficiency in the background technology, capable of reducing power consumption, and can produce higher brightness.

As preferably, described Reflective mode silicon substrate is provided with the CMOS transistor array of liquid crystal in the described liquid crystal layer of control.Tft array in the relative background technology of CMOS array, production technology is more ripe.

As preferably, it comprises and is used for the PBS polarization spectroscope or the polarizing coating that reflect incident light S polarisation and allow the P polarisation pass through. the LCOS optical system needs to utilize PBS polarization spectroscope usually, it is by two the 45 bonding prisms that form in degree isosceles right-angle prism base that the light of the light of incident LCOS microdevice and reflection is separated .PBS, when non-linear polarization light incident PBS polarization spectroscope, PBS polarization spectroscope can reflect the S polarised light (vertical incidence line plane) of incident light, and allows P polarised light (parallel incident ray plane) pass through.

As preferably, described PBS polarization spectroscope or polarizing coating be positioned at each Reflective mode silicon substrate to the light side.

As preferably, it is the three-chip type light engine.The three-chip type imaging technique is at about one times that can reach the one chip imaging technique on the utilance of light source, and simultaneously, same light source and the power consumption of one chip imaging technique can produce bright more picture relatively.

In sum, the utlity model has following beneficial effect:

1, because monocrystalline silicon has the good electron mobility, and monocrystalline silicon can form thinner circuit, so that ray machine is easy to generate the picture of high-res;

2, adopt the reflecting light utilization ratio can reach more than 80%, compare with 3% of penetration shadow casting technique light utilization efficiency in the background technology, capable of reducing power consumption, and can produce higher brightness;

3, the three-chip type imaging technique is at about one times that can reach the one chip imaging technique on the utilance of light source, and simultaneously, same light source and the power consumption of one chip imaging technique can produce bright more picture relatively, and color is also fuller.

Description of drawings

Fig. 1 is the utility model light engine structure and the light path schematic diagram of advancing;

Fig. 2 is the utility model LCOS microdevice structural representation;

Among the figure, 1, lighting source, 2, collector lens, 31, first speculum, 32, second speculum, the 33, the 3rd speculum, 4, filter, 51, first dichronic mirror, 52, second dichronic mirror, the 53, the 3rd spectroscope, 61 (62,63), LCOS microdevice, 71 (72,73), PBS polarization spectroscope, 8, light-combining prism, 9, projecting lens, 611, silicon substrate, 612, the CMOS transistor array, 613, liquid crystal layer, 614, reflectance coating, 615, the ITO conducting glass substrate.

Below in conjunction with accompanying drawing the utility model is described in further detail.

This specific embodiment only is to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this specification, but as long as all are subjected to the protection of Patent Law in claim scope of the present utility model.

Embodiment 1: as shown in Figure 1, a kind of ray machine of LCOS Digital Television, comprise lighting source 1, collector lens 2, first speculum 31, second speculum 32, the 3rd speculum 33, filter 4, first dichronic mirror 51, second dichronic mirror 52, the 3rd dichronic mirror 53, LCOS microdevice 61 (62,63), PBS polarization spectroscope 71 (72,73), light-combining prism 8, projecting lens 9, described collector lens 2, first speculum 31, second speculum 32, the 3rd speculum 33, filter 4, first dichronic mirror 51, second dichronic mirror 52, the 3rd dichronic mirror 53, LCOS microdevice 61 (62,63), light-combining prism 8, projecting lens 9 is arranged at (not shown) in the cube casing.

The light path traveling process as shown in Figure 1, lighting source 1 produces a branch of white light, light beam passes a collector lens 2 (being responsible for focusing on and aiming at light), reflex to a filter 4 by first speculum 31 again, filter out ultraviolet light and infrared light, in order to avoid to LCOS microdevice 61 (62,63) cause damage, afterwards, light beam passes first dichronic mirror 51, second dichronic mirror 52, the 3rd dichronic mirror 53 produces three beams coloured light (ruddiness, green glow, blue light), and at second speculum 32, under the help of the 3rd speculum 33, three beams coloured light shines corresponding PBS polarization spectroscope 71 (72,73) respectively and then reflexes to corresponding LCOS microdevice 61 (62,63), reflex to a light-combining prism 8 again, this light-combining prism 8 is combined panchromatic image of generation with these light and is projected in the projecting lens 9.

Lighting source 1, collector lens 2, first speculum 31 are positioned at filter 4 one sides, lighting source 1 is perpendicular to the optical axis of collector lens 2, first speculum 31 is positioned on the focal plane of collector lens 2, be miter angle with the optical axis of collector lens 2, and first speculum 31 also is positioned on the focal plane of filter 4, is 135 degree angles with the optical axis of filter 4; First dichronic mirror 51, second dichronic mirror 52 lays respectively on the focal plane of filter 4 opposite sides, and the optical axis with filter 4 is 45 degree or 135 degree angles respectively, second speculum 32 and second dichronic mirror 52 are arranged in parallel, the 3rd speculum 33 and first dichronic mirror 51 are arranged in parallel, the 3rd dichronic mirror 53 is vertical with second speculum 32 and be positioned at sustained height, PBS polarization spectroscope 71 (72,73) respectively with first dichronic mirror 51, second dichronic mirror 52, the optical axis of the 3rd dichronic mirror 53 is miter angle, LCOS microdevice 61 (62,63) respectively with first dichronic mirror 51, second dichronic mirror 52, the optical axis of the 3rd dichronic mirror 53 is miter angle, light-combining prism 8 is positioned at three PBS polarization spectroscopes 71 (72,73) intersection of optical axis, projecting lens 9 is vertical with the optical axis of light-combining prism 8.

The principle of dichronic mirror: dichronic mirror can reflect the light of some wavelength and allow all the other light to pass.For example, a dichronic mirror can be separated ruddiness from white light, stay blue light and green glow, and the another side dichronic mirror can be separated green glow again, only stays blue light.

PBS polarization spectroscope 71 (72,73) is bonded by two 45 degree isosceles right-angle prism bases.Light is divided into P light and S light, the effect of PBS polarization spectroscope 71 (72,73) is to allow P light pass through, and allows S light reflect, three beams coloured light passes through PBS polarization spectroscope 71 (72 separately respectively, 73) after, can reflect the S polarisation and enter LCOS microdevice 61 (62,63), when liquid crystal display is bright attitude, the S polarisation will change over the P polarisation, and the three road polar biased light of crossing with light-combining prism 8 combination modulations project projecting lens 9 at last.

The structure of LCOS microdevice 61 (62,63) comprises silicon substrate 611, liquid crystal layer 613, ITO conducting glass substrate 615 as shown in Figure 2.Silicon substrate 611 is provided with CMOS transistor array 612, is provided with reflectance coating 614 on CMOS transistor array 612, and ITO conducting glass substrate 615 is bonding with silicon substrate 611, and is provided with liquid crystal layer 613 between ITO conducting glass substrate 615 and silicon substrate 611.CMOS transistor array 612 is made up of a metal-oxide-semiconductor and a storage capacitance as pixel electrode.When light projects on the LCOS microdevice 61 (62,63), the liquid crystal in the liquid crystal layer 613 plays a part as door or valve, and control arrives the quantity of the light of reflectance coating 614.The voltage that the transistor of respective pixel electrode receives is high more, and this transistor allows the light that passes through also just many more, and then formed picture is also bright.

Claims

1. the ray machine of a LCOS Digital Television, comprise lighting source, collector lens, filter, dichronic mirror, be provided with LCOS microdevice, light-combining prism, the projecting lens of ITO conducting glass substrate and liquid crystal layer, described collector lens, filter, dichronic mirror, the LCOS microdevice, light-combining prism, the projecting lens that are provided with ITO conducting glass substrate and liquid crystal layer are arranged in the cube casing, and it is characterized in that: described LCOS microdevice is the Reflective mode silicon substrate that is provided with reflectance coating.

2. the ray machine of a kind of LCOS Digital Television according to claim 1 is characterized in that: described Reflective mode silicon substrate is provided with the CMOS transistor array of liquid crystal in the described liquid crystal layer of control.

3. the ray machine of a kind of LCOS Digital Television according to claim 1 is characterized in that: it comprises and is used to the PBS polarization spectroscope or the polarizing coating that reflect incident light S polarisation and allow the P polarisation pass through.

4. the ray machine of a kind of LCOS Digital Television according to claim 3 is characterized in that: described PBS polarization spectroscope or polarizing coating be positioned at each Reflective mode silicon substrate to the light side.

5. the ray machine of a kind of LCOS Digital Television according to claim 1 is characterized in that: it is the three-chip type light engine.