CN208421422U - A kind of augmented reality short distance imaging optical system - Google Patents

Abstract

The utility model discloses a kind of augmented reality short distance imaging optical system, it is characterized by comprising the first polarizing film being arranged successively, LCD screen, half reflection concave mirror, special half reflection polariscopes, the LCD screen be used for pass through the first polarizing film polarization light imaging, can make after energization across linearly polarized light be changed to the direction vertical with incident light；The half reflection concave mirror be used for adjust cannot pass through the polariscopic polarization light of special half reflection polarization angle make its reflection after can be by special half reflection polariscope；The special half reflection polariscope is consistent with the polarization direction of first polarizing film for accepting the optical imagery after being adjusted.The utility model realizes the optical amplifier of display image, and realizes that the optics of ambient is constant simultaneously, realizes the optical superposition of augmented reality.

Description

A kind of augmented reality short distance imaging optical system

Technical field

The utility model relates to a kind of optical instrument, in particular to a kind of augmented reality short distance imaging optical system.

Background technique

Light is ubiquitous around us, and optical image technology is also inseparable with our life, and such as various cameras are taken the photograph Camera, telescope, projector etc..The prior art is preferable suitable for the interior optical mode for realizing big multiple amplification of short distance not yet Group；Present short distance imaging modules although can be realized imaging but the effect is unsatisfactory and structure is complicated manufacturing cost compared with Height, so needing a kind of device that can preferably improve its working efficiency, the design of the utility model is exactly to ask to solve this Topic.

Utility model content

In view of the problems of the existing technology, the utility model provides a kind of augmented reality short distance imaging optical system.

The technical solution of the utility model is:

A kind of augmented reality short distance imaging optical system, polarizing film, LCD screen, half reflection including being arranged successively are recessed Face mirror, special half reflection polariscope, the LCD screen are used to pass through the polarization light imaging of polarizing film, can make to wear after energization The linearly polarized light crossed is changed to the direction vertical with incident light；The half reflection concave mirror cannot pass through special half instead for adjusting Penetrate polariscopic polarization light polarization angle make its reflect after can be by special half reflection polariscope；The special half reflection is inclined Galvanometer is consistent with the polarization direction of the polarizing film for accepting the optical imagery after being adjusted.

Preferably, the LCD screen is a kind of optical module, energization area can be divided into and be not powered on region, after being powered Energization area can make across linearly polarized light be changed to the direction vertical with incident light, be not powered on region and do not change polarised light side To.

Preferably, the special half reflection polariscope is located at the concave side of half reflection concave mirror, can cannot penetrate Polarization light reflex to half reflection concave mirror concave side adjust the angle.

Preferably, the special half reflection polariscope includes half reflecting optics, one second polarizing film and two half-wave plates, It puts in order as the first half-wave plate, half reflection eyeglass, the second half-wave plate, the second polarizing film, and described two half-wave plates are for adjusting The polarization angle of whole polarization light, the half reflection eyeglass can make a part of light reflect another part to pass through, and described second partially Vibration piece is for accepting the polarization light after being adjusted.

Using the technical solution of the utility model, have the advantages that the utility model realizes light in short distance The amplification and imaging of image are learned, while ambient will not generate the change of imaging size and image-forming range across the system.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model light path principle figure；

Fig. 3 is the polariscopic structural schematic diagram of special half reflection；

Fig. 4 is special half reflection polariscope light path principle figure.

Attached drawing mark:

1, polarizing film；2, LCD screen；3, half reflection concave mirror；4, special half reflection polariscope；405, the first half-wave plate； 406, plate reflecting mirror；407, the second half-wave plate；408, the second polarizing film.

Specific embodiment

Below in conjunction with the drawings and specific embodiments, the present invention will be further described.

Referring to Fig.1, a kind of augmented reality short distance imaging optical system, including polarizing film 1, the LCD screen being arranged successively 2, half reflection concave mirror 3, special half reflection polariscope 4, the LCD screen 2 be used to pass through the polarization light of polarizing film at Picture, can make after energization across linearly polarized light be changed to the direction vertical with incident light；The half reflection concave mirror 3 is for adjusting Cannot pass through the polarization light of special half reflection polariscope 4 polarization angle make its reflect after can be by special half reflection polariscope 4；The special half reflection polariscope 4 is for accepting the optical imagery after being adjusted, the polarization direction with the polarizing film 1 Unanimously.

The LCD screen 2 is a kind of optical module, can be divided into energization area and be not powered on region, the energization after being powered Region can make across linearly polarized light be changed to the direction vertical with incident light, be not powered on region and do not change direction of polarized light.

The special half reflection polariscope 4 is located at the concave side of half reflection concave mirror 3, can be by impervious polarization The concave side that light reflexes to half reflection concave mirror 3 adjusts the angle.

With reference to Fig. 4, in an embodiment of the present invention, special half reflection polariscope includes half reflecting optics, one second Polarizing film and two half-wave plates put in order as the first half-wave plate 405, half reflection eyeglass 406, the second half-wave plate 407, second Polarizing film 408, described two half-wave plates 405/407 are used to adjust the polarization angle of polarization light, and the half reflection eyeglass 406 can Pass through so that a part of light reflects another part, second polarizing film 408 is for accepting the polarization light after being adjusted.

Utility model works principle are as follows:

If Fig. 2, external polarization light A are irradiated to the energization area of LCD screen 2 through polarizing film 1, display image is generated, And be changed to the polarization angle vertical with external polarization light A, again pass through half reflection concave mirror 3 irradiate it is inclined to special half reflection Galvanometer 4.Since at this moment the polarization angle of light is vertical with that can penetrate the polarization angle of special half reflection polariscope 4, at this time can not Reflected across special half reflection polariscope 4, and reflect after polarization direction be changed to again it is consistent with external polarization light A Polarization angle, be irradiated on half reflection concave mirror 3, it is anti-to have eventually passed through special half using the reflection of half reflection concave mirror 3 It penetrates polariscope 4 and forms emergent light A1.And external polarization light C pass through be irradiated to LCD screen 2 after polarizing film 1 be not powered on area The change of polarization direction does not occur through LCD screen 2 for domain, sequentially passes through half reflection concave mirror 3 and special half reflection polariscope 4, form emergent light C1.

Such as Fig. 4, incident polarized light D is vertical with the polarization angle of incident polarized light E, the first half-wave plate 405 can make across Polarised light changes 45 ° of polarization angle, and half reflection eyeglass 406 can be such that a part of light reflects, and another part penetrates, the second half-wave plate 407 can make across polarised light change 135 ° of polarization angle, the polarization direction of the second polarizing film 408 and E, E2, the polarization side of D1 To consistent；When the optics module is run: polarised light D passes through 405 rear polarizer angle of the first half-wave plate and increases 45 °, using half Reflecting optics 406 again pass through half-wave plate 405 and increase 45 ° of polarization angle after reflecting, the light reflected at this time is D1, And D is in 90 ° vertical with the polarization angle of D1, the light E1 after similarly incident light E is reflected is also vertical with the polarization angle of E；And The polarization that the second half-wave plate 407 again increases 135 ° is not again passed through by the light that half reflection eyeglass 406 reflects and passes through Angle increases 180 ° (45 °+135 °=180 °) with the angle of incident polarized light at this time, at this moment with the polarization angle of incident light Unanimously, then incident light D can not pass through the optics module, and incident light E has partially passed through the optics module.

The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model, Under all utility models in the utility model are conceived, equivalent structure made based on the specification and figures of the utility model Transformation, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.

Claims (4)

1. a kind of augmented reality short distance imaging optical system, it is characterised in that: including the first polarizing film, the liquid crystal being arranged successively Screen, half reflection concave mirror, special half reflection polariscope, the LCD screen are used to pass through the polarization light of the first polarizing film Imaging, can make after energization across linearly polarized light be changed to the direction vertical with incident light；The special half reflection concave mirror is used It can be by special half reflection after the polarization angle that adjustment cannot pass through the polariscopic polarization light of special half reflection reflects it Polariscope；The special half reflection polariscope is for accepting the optical imagery after being adjusted, with first polarizing film Polarization direction is consistent.

2. augmented reality short distance imaging optical system according to claim 1, it is characterised in that: the LCD screen is A kind of optical module can be divided into energization area and be not powered on region, the energization area after being powered can make across linearly polarized light It is changed to the direction vertical with incident light, region is not powered on and does not change direction of polarized light.

3. augmented reality short distance imaging optical system according to claim 1, it is characterised in that: the special half reflection Polariscope is located at the concave side of half reflection concave mirror, impervious polarization light can be reflexed to half reflection concave mirror Concave side adjusts the angle.

4. augmented reality short distance imaging optical system according to claim 1, it is characterised in that: the special half reflection Polariscope includes half reflecting optics, one second polarizing film and two half-wave plates, is put in order as the first half-wave plate, half reflection Eyeglass, the second half-wave plate, the second polarizing film, described two half-wave plates are used to adjust the polarization angle of polarization light, and described half is anti- It penetrates eyeglass a part of light can be made to reflect another part and pass through, second polarizing film is for accepting the polarised light after being adjusted Line.