TWI662296B - Optical alignment detecting device and detecting method thereof - Google Patents

Abstract

The invention relates to an optical alignment detecting device and a detecting method thereof, which use a light source emitter of a detecting unit to project a light source to a beam expander, expand the light source, and then project the light to the polarization adjusting unit and the object to be detected, so that the light source penetrates. The first light polarizer and the wave plate of the polarizing adjustment unit generate a circularly polarized light that is rotated, and then sequentially penetrates the object to be detected and the second light polarizer, and is received by the photodetector of the detecting unit, and the photodetector is received by the photodetector. Performing to detect the light source passing through the polarization adjusting unit and the object to be detected, and discriminating that the object to be detected and the wave plate generate the same or opposite direction of rotation of the circularly polarized light, and the circularly polarized light is cancelled or not cancelled, and the intensity of the light source received by the photodetector approaches The minimum or maximum value can be used to calculate the polarization rotation state of the object to be detected for optical alignment.

Description

Optical alignment detecting device and detecting method thereof

The invention provides an optical alignment detecting device and a detecting method thereof, in particular, a device and a method for performing polarization detection on an optical lens, and the polarizing detection of the object to be detected by the detecting unit and the polarization adjusting unit is performed to achieve optical pairing of the object to be detected. The purpose of the bit detection.

According to the continuous advancement and innovation of the technological age, many things in daily life have also undergone significant changes with the advancement of science and technology, such as television or movies watched in people's daily lives, through the display of images on the screen. It was also transformed from an early 2D planar image (2D planar image, 2 Dimension) into a 3D stereoscopic image (3D stereoscopic image, 3D stereoscopic image, 3 Dimension image, 3 Dimension image, 3D stereo image, 3D image, 3D image, 3D image, 3D image, 3D image, 3D image, 3D image, 3D image The stereoscopic visual effect of the image (3D stereoscopic image) is realized by many operators using 3D stereoscopic images to evolve various real-world presences and immersive simulated image realms, such as virtual reality (VR). Technology, Augmented Reality (AR) technology, Mixed Reality (MR) technology or Cinematic Reality (CR) technology, etc., has been applied to various games, TV or movies, etc. Frequently applied technology to provide people with 3D stereoscopic images Visual perception.

The presentation of 3D stereoscopic images is formed by the Binocular Parallax effect, and the binocular parallax represents the effect that the two images are slightly different because of their different positions and different viewing angles. Finally, the brain combines the different images seen by the two eyes to generate 3D stereoscopic images; as for the stereoscopic image presentation technology, it can be roughly divided into Stereoscopic or non-glasses that need to be worn with special design glasses. Auto Stereoscopic for naked-eye viewing; among them, 3D stereoscopic image display technology for wearing glasses, including color difference type (ie, Color Filter Glasses), polarized type (ie, Polarizing Glasses) And active shutter type (ie, Shutter Glasses) and other types; as for polarized 3D stereoscopic imaging technology (Polarization 3D), also known as polarized 3D stereoscopic image technology, please refer to the fifth, sixth, and seventh figures. With the application of passive polarized glasses, the principle of light [vibration direction] (a) is used to decompose the original image (b) First, the image (b) is divided into two groups of vertically polarized light (b1) and horizontally polarized light (b2), and then the left and right lenses (c1, c2) are respectively polarized by 3D glasses (c). The polarizing lens of the direction is for the left and right eyes of the user to receive two sets of pictures through the left and right lenses (c1, c2), and then synthesized through the brain to form a stereoscopic image (d).

Although the stereoscopic image is displayed by the naked eye, the user can view the 3D stereoscopic image without wearing the specially designed glasses, and the naked-eye stereoscopic display technology, such as the Lenticular len Type stereoscopic imaging technology, is The lens is used to bend the light of each display information to the left and right eyes of the viewer respectively, and the displayed stereoscopic image has limitations such as position and angle, so that the viewing position and angle of the viewer are also more restricted. Glasses-type 3D stereoscopic image display technology with special design glasses is better for 3D stereoscopic images presented through glasses, and is not easily restricted by viewing position or angle. It is still used by most operators; The glasses must be tested and aligned to adjust the proper polarization angle and polarization direction of the left and right lenses to achieve a good 3D stereoscopic image display effect. Otherwise, the polarized glasses may be used when polarized glasses are used. The penetrating axis (the axis that penetrates the linearly polarized light) causes a tilt phenomenon, so that cross talk occurs, and the brightness of the polarized glasses is changed, and the darkening phenomenon is missing.

Therefore, how to solve the problem that the lens of the polarized glasses is difficult to adjust the proper polarization angle and polarization direction, and the lens is easy to be tilted due to the penetrating axis, and the crosstalk phenomenon is troublesome and lacking, which is related to the industry. The manufacturer is eager to study the direction of improvement.

Therefore, in view of the above problems and deficiencies, the inventors have collected relevant information, and through multi-party assessment and consideration, and through years of experience in the industry, through continuous trial and modification, the design of such available detection units and The polarizing adjustment unit performs optical alignment detection on the object to be detected, so as to obtain an appropriate polarization angle and polarization direction of the object to be detected, so as to reduce the incidence of the penetration axis when the object to be detected is used, and avoid the occurrence of crosstalk. The birth of the invention patent for its detection method.

The main object of the present invention is to perform the optical alignment detecting device The measuring method uses the light source emitter of the detecting unit to project the light source to the beam expander, expands the light source, and then projects the light source to the polarization adjusting unit and the object to be detected, so that the light source penetrates the first light polarizing plate and the wave plate of the polarization adjusting unit. The rotating circularly polarized light is generated, and then the object to be detected and the second light polarizer are sequentially penetrated, and then received by the photodetector of the detecting unit, and the photodetector detects the penetrating polarization adjusting unit and the object to be detected. The light source discriminates whether the object to be detected and the wave plate generate circular polarization light rotation direction (left or right rotation) is opposite or the same, and whether the circular polarization light rotation direction is cancelled or not canceled, the light source received by the photodetector is close to The minimum value [0] or the maximum value [not 0] can calculate the polarization rotation state of the object to be detected, and achieve the purpose of optical alignment of the object to be detected. When viewing the 3D image, the penetration axis can be reduced. Tilt, crosstalk, improve the stability of use.

A secondary object of the present invention is that the light source emitter of the detecting unit is a light source emitter of a laser light or a light source emitter of other types of light sources for emitting a green light laser source having a wavelength of 532 nm and having a power of 20 mw or the like. a type of laser light source, and a light source projection hole on one side of the light source emitter can project a laser light source outward, and a light source receives a light source to receive a projection hole of the surface light source, and a light source expansion surface on the other side can be The laser light source is expanded outward to the polarization adjusting unit to increase the detection area of the object to be detected, and the beam expander is a variable light beam expander, and the received light source is doubled to 8 times (2x~8x). The magnification of the magnification is used to perform the beam expansion method of the laser light source.

Another object of the present invention is that the first and second light polarizing sheets of the polarization adjusting unit are respectively made of a material such as Nanoparticles in Sodium-Silicate Glass. And the wave plate material can be crystalline quartz ( Crystalline Quartz) and other materials, and can produce phase delay 1/4 wavelength or other phase retardation wave plate; etc.; and the object to be detected detected by the detecting unit and the polarization adjusting unit can be an optical lens or other optics of the wearing glasses. Lens and so on.

1‧‧‧Detection unit

11‧‧‧Light source transmitter

110‧‧‧Light source projection hole

12‧‧‧beam expander

121‧‧‧Light source receiving surface

122‧‧‧Light source expansion surface

13‧‧‧Photodetector

131‧‧‧Glossy surface

2‧‧‧Polarization adjustment unit

21‧‧‧First Light Polarizer

22‧‧‧Second light polarizer

23‧‧‧ Wave Plate

3‧‧‧Testables

A‧‧‧vibration direction

B‧‧‧ image

B1‧‧‧Vertically polarized light

B2‧‧‧Horizontal polarized light

c‧‧‧3D glasses

C1‧‧‧ left lens

C2‧‧‧right lens

D‧‧‧3D image

The first figure is a perspective exploded view of the present invention.

The second drawing is an exploded perspective view of a preferred embodiment of the present invention.

The third figure is a flow chart (1) of the detection method of the present invention.

The fourth figure is a flow chart (2) of the detection method of the present invention.

The fifth figure is a schematic diagram of the decomposition of the light vibration direction of the conventional polarization type 3D technology (1).

The sixth figure is a schematic diagram of the decomposition of the light vibration direction of the conventional polarization type 3D technology (2).

The seventh figure is a schematic diagram of the light vibration direction reception of the conventional polarization type 3D technology.

In order to achieve the above objects and effects, the technical means, the structure, the method of the implementation, and the like, which are used in the present invention, are described in detail in the preferred embodiments of the present invention.

Please refer to the first and second figures, which are perspective exploded views of the present invention, and perspective exploded views of the preferred embodiment. As can be clearly seen from the figure, the optical alignment detecting device of the present invention includes a detecting unit. 1. The polarization adjusting unit 2 and the object to be detected 3, wherein the detecting unit 1 includes a light source emitter 11, a beam expander 12 and a light detector 13, and the light source emitter 11 is provided with a light source projection hole 110, The laser light can be projected outward to the beam expander 12, and the light source receiving surface 1 is provided with a light source receiving surface 1 21 for receiving the laser light source projected by the light source emitter 11, and the beam expander 12 then spreads the received laser light source outwardly from the other side of the light source expansion surface 122 for the light source emitter 11 to expand the beam. The photodetector 13 on the other side of the device 12 receives the laser light source from the one side light receiving surface 131.

The polarization adjusting unit 2 includes two opposite first ray polarizers 21, second ray polarizers 22, and waves located on opposite sides of the first and second ray polarizers 21, 22 and adjacent to the side of the first ray polarizer 21. Slice 23.

The object to be detected 3 may be an optical lens of the wearable glasses.

In the actual application, the polarizing adjustment unit 2 is disposed between the beam expander 12 and the photodetector 13 of the detecting unit 1 for the first light polarizing film 21 and the second light polarizing film 22 to be respectively disposed in the light beam. The opposite side of the expander 12 and the photodetector 13 is disposed between the first and second ray polarizers 21 and 22, and the object to be detected 3 is disposed between the wave slab and the second ray polarizer 22. The light source emitter 11 of the detecting unit 1 can be used to project the laser light from the light source projection hole 110 to the beam expander 12, and the beam expander 12 expands the laser light source and projects it to the polarization adjusting unit 2 and the object to be detected 3. The laser light source is received by the photodetector 13 to detect the object 3 to be detected, and the optical alignment detecting device of the present invention is constituted by the detecting unit 1, the polarization adjusting unit 2, and the object to be detected 3.

The light source emitter 11 of the detecting unit 1 may be a light source emitter 11 of a laser light or a light source emitter 11 of another light source type, so that the light source emitter 11 can emit a green light laser source with a wavelength of 532 nm. And the power can be 20mw, etc., various types of laser light source or other types of light source.

The beam expander 12 of the detecting unit 1 is a variable light beam expander 12, and the light source receiving surface 121 can be received from the light source 11 by a light source of 2 times to 8 times (2x~8x). The magnification of the magnification is enlarged, and then the amplified laser light source is expanded outward to the polarization adjusting unit 2 by the light source expansion surface 122 to increase the detection area of the light source to be detected by the object 3 to be detected, and is projected to the light detector 13, and the light is detected. The device 13 receives the light source of a larger detection area to more accurately detect the intensity of the light source penetrating the object to be detected 3, the circularly polarized light, and the like.

In addition, the photodetector 13 of the detecting unit 1 is a processor or a chip including a preset circuit layout and a built-in application, and can calculate the intensity of the light source received by the self-polarization adjusting unit 2 and the object to be detected 3, The direction of rotation of the circularly polarized light is used for the purpose of optical alignment detection of the object to be detected 3, so that the object 3 can obtain a suitable polarization direction, angle, etc., and can reduce the occurrence of wear when viewing 3D images in practical applications. Through-axis tilt, crosstalk and other phenomena.

Further, the first light polarizing film 21 and the second light polarizing film 22 (Light Polarized) of the polarizing adjusting unit 2 may be Nanoparticles in Sodium-Silicate Glass, respectively; The material of the wave plate 23 is crystalline quartz (Crystalline Quartz), and can generate a phase retardation 1/4 wavelength or other phase retardation wave plate 23 and the like.

As for the object 3 to be detected detected by the detecting unit 1 and the polarization adjusting unit 2, it may be an optical lens or other optical lens of the wearing glasses.

Please refer to the first, second, third and fourth figures, which is a three-dimensional decomposition of the present invention. The figure, the exploded view of the preferred embodiment, the flow chart of the detecting method (1), and the flow chart of the detecting method (2), it can be clearly seen from the figure that the optical alignment detecting device of the present invention is When the actual application is implemented, the detection unit 1 and the polarization adjustment unit 2 can be used for optical detection of the object 3, and the detection steps are as follows:

(A) Using the light source emitter 11 of the detecting unit 1, the laser light source is projected from the light source projection hole 110 to the beam expander 12.

(B) The light source receiving surface 121 on the side of the beam expander 12 receives the light source of the light source emitter 11 and expands the received light source, and then expands and projects the light source to the polarized light by the light source expansion surface 122 on the other side. The unit 2 and the object to be detected 3 are adjusted.

(C) and the beam expander 12 projects the light source to penetrate the first ray polarizer 21 and the wave plate 23 of the polarization adjusting unit 2, and the first ray polarizer 21 and the wave plate 23 generate circular polarization in a left-handed or right-handed manner. Light.

(D) and after the light source sequentially penetrates the object to be detected 3 and the second light polarizing film 22, it is received by the photodetector 13 of the detecting unit 1.

(E) that is, the light detector 13 detects the light source that passes through the polarization adjusting unit 2 and the object to be detected 3. If the object to be detected 3 and the wave plate 23 are opposite to the direction of rotation of the polarized light (left-handed or right-handed), the steps are performed. (F); if the object to be detected 3 and the wave plate 23 generate the same direction of polarization (left-handed or right-handed), the step (G) is performed.

(F) After the circularly polarized light penetrates the object to be detected 3, the direction of polarization of the polarized light (left-handed or right-handed) completely cancels, and the polarization direction is reduced, and the first light-polarizing sheet 21 and the second light-polarizing sheet 22 are penetrated. When the axes are orthogonal to each other for the light source to penetrate the object to be detected 3 and the second light polarizer 22, the polarized light source is cancelled, and the intensity of the light source received by the photodetector 13 is minimum. [0].

(G) the direction of rotation of the polarized light (left-handed or right-handed) generated by the object to be detected 3 and the wave plate 23 is not completely canceled, and the polarized light source penetrates the object to be detected 3 and the second light-polarized sheet 22 to generate elliptically polarized light, and The light ray polarizer 22 penetrates the axis to limit the polarization of the light passing through the axis, and the intensity of the light source received by the photodetector 13 is not zero [0], and the light detector 13 calculates the intensity relationship of the receiving light source. The polarization rotation angle [θ] of the object 3 to be detected is determined.

In the above-mentioned detecting unit 1 of the step (A), the light source emitter 11 may be a light source emitter 11 for projecting laser light or a light source emitter 11 of other light source type for emitting a green light laser source having a wavelength of 532 nm. And the power is 20mw or the like or other types of light sources, and the light source emitter 11 has a light source projection hole 110 for projecting the laser light source outward, and the beam expander 12 side is provided with the light source receiving surface 121 for the positional light source projection. The hole 110 and the other side are provided with a light source expansion surface 122, which can expand the laser light source outward to the polarization adjusting unit 2 to increase the detection area of the light source to be detected by the object to be detected 3, and project it to the light detector 13, and then supply light. The detector 13 receives a light source of a larger detection area to more accurately detect the intensity of the light source.

Further, the beam expander 12 of the detecting unit 1 of the above step (B) is a variable beam expander, and the received light source can be amplified by a magnification of 2 times to 8 times (2x to 8x).

In addition, the first and second light polarizing sheets 21 and 22 (Light Polarized) of the polarization adjusting unit 2 of the above steps (C) and (D) are respectively glass sheets containing nanometer sodium citrate (Nanoparticles). In Sodium-Silicate Glass) material or other materials; and the wave plate 23 material may be crystalline quartz (Crystalline Quartz), and may generate a phase retardation 1/4 wavelength or other phase retardation wave plate 23 and the like.

As for the object to be detected 3 detected by the detecting unit 1 and the polarization adjusting unit 2 in the above steps, it may be an optical lens of the wearing glasses or other types of optical lenses.

In the above step (G), the photodetector 13 of the detecting unit 1 is a processor or a chip including a preset circuit layout and a built-in application, and uses the self-polarization adjusting unit 2 and the object to be detected 3 Receiving the intensity relationship of the light source, calculating the polarization rotation angle [θ] of the object to be detected 3 through a processor or a wafer, for example, 5°, 10°, 15°, 20° or 25°, etc., thereby achieving detection The object 3 performs the optical alignment detection purpose, so that the object 3 to be detected can obtain a suitable polarization direction, an angle, etc., and when the 3D image is viewed in practical applications, the phenomenon of penetrating axis tilt and crosstalk can be reduced, and the phenomenon can be improved. The effectiveness of application stability.

Therefore, the above description is only a preferred embodiment of the present invention, and is not limited to the patent scope of the present invention. The optical alignment detecting device and the detecting method thereof of the present invention are projected by the light source emitter 11 of the detecting unit 1. The light source is extended to the beam expander 12, and after the light source is expanded and projected onto the first light polarizing film 21, the wave plate 23, the object to be detected 3, and the second light polarizing film 22 of the polarization adjusting unit 2, the light is transmitted through the polarization adjusting unit. 2. The light source of the object to be detected 3 is received by the photodetector 13 of the detecting unit 1, and the photodetector 13 uses the relationship between the intensity of the receiving light source to calculate the polarization direction and angle of the object 3 to be detected. The object 3 performs optical alignment and detection purposes, and reduces the inclination of the through-axis of the object to be detected 3, and the string The effect of the disturbance phenomenon is to improve the stability of the object to be tested 3, so that the structures and devices that can achieve the aforementioned effects are covered by the present invention, and such simple modifications and equivalent structural changes should be included in the same reason. Within the scope of the patent of the present invention, it is combined with Chen Ming.

Therefore, the present invention is mainly directed to an optical alignment detecting device and a detecting method thereof, which utilizes a light source emitter of a detecting unit to project a light source to a beam expander to expand the light source and project the first light polarized light to the polarization adjusting unit. The film, the wave plate, the object to be detected and the second light polarizer are finally received by the light detector of the detecting unit, and the polarization direction and angle of the object to be detected are calculated according to the intensity relationship of the receiving light source, thereby achieving the object to be detected Optical alignment detection is the main protection focus, and the occurrence of penetration axis tilt and crosstalk phenomenon is reduced, which only makes the object to be detected have the advantage of obtaining a proper polarization angle, and is more stable in practical application, but only the above The preferred embodiments of the present invention are not intended to limit the scope of the invention, and all modifications and equivalent structural changes made by the description and drawings of the present invention should be construed as equivalent to the invention. Within the scope, it is combined with Chen Ming.

In summary, the optical alignment detecting device and the detecting method thereof according to the present invention can achieve the efficacy and purpose when actually implemented and implemented, so the present invention is an excellent research and development, and is in conformity with the invention patent. The application requirements, 提出 apply in accordance with the law, and hope that the trial committee will grant the case as soon as possible to protect the inventor's hard work in research and development, creation, if there is any doubt in the bureau and your review committee, please do not hesitate to give instructions, the inventor will try his best to cooperate, Real sense of virtue.

Claims (5)

An optical alignment detecting method comprising the detecting unit, the polarization adjusting unit and the object to be detected, and detecting the object to be detected: (A) the light source emitter of the detecting unit projects the light source to the beam expander; (B) the beam expanding After expanding the received light source, the light source is projected to the polarization adjusting unit and the object to be detected; (C) the beam expander projecting the light source through the first light polarizer and the wave plate of the polarization adjusting unit for the first light The polarizer and the wave plate generate a rotating circularly polarized light; (D) the light source sequentially passes through the object to be detected and the second light polarizer, and is received by the photodetector of the detecting unit; (E) the photodetector detects Passing through the polarization adjusting unit and the light source of the object to be detected, if the object to be detected and the wave plate are rotated in opposite directions, the step (F) is performed; if the object to be detected and the wave plate are rotated in the same direction, the steps are performed. (G); (F) after the circularly polarized light penetrates the object to be detected, the direction of rotation of the circularly polarized light is completely canceled, and the circular polarization direction is restored, and the transmission axis of the first light polarizer and the second light polarizer are orthogonal to each other. To When the light source penetrates the object to be detected and the second light polarizer, the circularly polarized light source is cancelled, and the light source receives the intensity of the light source to be close to a minimum value [0]; (G) the object to be detected and the wave plate generate a circularly polarized light rotating direction. Not completely canceled, the polarized light source penetrates the object to be detected and the second light polarizer to produce elliptically polarized light, and is restricted by the second light polarizer through the axis, leaving elliptically polarized light in the direction of the axis, and the photodetector The intensity of the received light source is not zero [0], that is, it is utilized by the photodetector The intensity relationship of the light source is received, and the polarization rotation angle of the object to be detected is calculated. The optical alignment detecting method according to claim 1, wherein the detecting unit of the step (A) and the light source emitter are laser light source emitters for emitting a green light laser source having a wavelength of 532 nm, And the power is 20mw, and the light source emitter side has a light source projection hole for projecting the laser light source outward, and the beam expander side is provided with a light source receiving surface of the alignment light source projection hole, and the other side is provided with a laser light source The light source expansion surface is expanded to the polarization adjustment unit to increase the detection area of the object to be detected. The optical alignment detecting method according to claim 1, wherein the beam expander of the detecting unit of the step (B) is a variable beam expander, and the received light source is doubled to 8 times ( 2x~8x) magnification amplification, the beam expander receives the light source and then projects to the polarization adjustment unit and the object to be detected, and the first light polarizer, the wave plate, the object to be detected, the second light polarizer and the polarizing adjustment unit The light detectors form a transmission axis through which the light source penetrates. The optical alignment detecting method according to claim 1, wherein the step (B) is used. The first and second light polarizing sheets of the polarizing adjusting unit of steps (C) and (D) are respectively Nanoparticles in Sodium-Silicate Glass; and the waves are respectively The sheet material is crystalline quartz (Crystalline Quartz), and generates a phase retardation wavelength or other phase retardation wave plate; and the object to be detected detected by the detecting unit and the polarization adjusting unit is an optical lens of the wearing glasses. The optical alignment detecting method according to claim 1, wherein the detecting unit The photodetector is a processor or chip that includes a preset circuit layout, a built-in application.