Shenzhen Dlodlo New Technology Co., Ltd.

Hong Kong Applied Science and Technology Research Institute Company, Limited

Shenzhen Dlodlo Technologies Co., Ltd.

Other

Weiping Tang

Gang Li

Ying Liu

Fengxue Zhang

Xu Xiong

Yaojun Feng

Kin Lung Chan

Kinlung Chan

Disclosed are a short-distance optical amplification module, method and system. The module comprises a reflective type polarizing plate, a first phase delay plate, an imaging lens, a second phase delay plate and an absorptive type polarizing plate, arranged successively. The reflective type polarizing plate is arranged on a transmission path of an optical image. The first phase delay plate is arranged on the transmission path of the optical image passing through the reflective delay plate. The imaging lens is arranged on the transmission path of the optical image. The second phase delay plate is configured for converting a polarization direction of the optical image from an elliptical or circular polarization direction to a second linear polarization direction. The absorptive type polarizing plate is arranged on one side of the second phase delay plate that faces away from the imaging lens.

Short-distance optical amplification module, amplification method and amplification system

The present invention discloses a short-range optical amplification module, which includes a first phase delay plate, a transflective mirror, a second phase delay plate and a reflective polarizing plate that are arranged sequentially, wherein: the transflective mirror includes a first optical surface and a second optical surface; the first optical surface is adjacent to the second phase delay plate; the second optical surface is a transflective optical surface, and the second optical surface is adjacent to the first phase delay plate; the focal length fs2 of the reflection surface of the second optical surface meets the following condition: F&#x2264;fs2&#x2264;5F, wherein F is the system focal length of the short-range optical amplification module, and F meets the following condition: 10 mm&#x2264;F&#x2264;35 mm. By performing parameter refining on the fs2 that influences the optical amplification effect, the module can keep a small overall thickness while obtaining a large optical amplification effect, and it can be applied in a small-size virtual reality (VR) device, so that the VR device can realize a wide field angle, a large eyebox and a high-quality imaging effect, and hence a better user experience.

Short range optical amplification module, spectacles, helmet and VR system

The present invention discloses a short-range optical amplification module, which includes, sequentially from the image side to the object side, a reflective polarizing plate, a first phase delay plate, a third lens and a second phase delay plate, wherein the short-range optical amplification module further includes a first lens and/or a second lens that are/is located on either side of any one of the reflective polarizing plate, the first phase delay plate, the third lens and the second phase delay plate. In the third lens, the optical surface adjacent to the second phase delay plate is a transflective optical surface; the reflection surface-containing focal length fof the third lens meets the following condition: 1F&#x2264;f&#x2264;2F, wherein F is the focal length of the short-range optical amplification module. By performing parameter refining on the fthat influences the optical amplification effect, the module can keep a small overall thickness while obtaining a large optical amplification effect and it can be applied in a small-size VR device, so that the VR device can realize a wide field angle, a large eyebox and high-quality imaging effect, and hence a better user experience.

Short-range optical amplification module, spectacles, helmet and VR system

A short-range optical amplification module, spectacles, a helmet and a VR system. The amplification module includes a reflective polarizing plate, a first phase delay plate, a second lens and a second phase delay plate, and a first lens. In the second lens, the optical surface adjacent to the second phase delay plate is a transflective optical surface. The first focal length f2 of the second lens meets the condition: 1F&#x2264;f2&#x2264;2F, wherein F is the system focal length of the optical amplification module. By performing parameter refining on the first focal length f2 that influences the optical amplification effect, the module can keep a small overall thickness while obtaining a large optical amplification effect, and the VR device can realize a good field angle, a large oculomotor range and a high-quality imaging effect.

Disclosed are a short-range optical amplification module, spectacles, a helmet and a VR system. The amplification module includes a reflective polarizing plate, a first phase delay plate, a second lens and a second phase delay plate that are arranged in turn, and a first lens is further set on either side of any one of the reflective polarizing plate, the first phase delay plate, the second lens and the second phase delay plate; in the second lens, the optical surface adjacent to the second phase delay plate is a transflective optical surface; the first focal length f2 of the second lens meets the condition: 1.2F&#x2264;f2&#x2264;2F, wherein F is the system focal length of the optical amplification module. By performing parameter refining on the first focal length f2 that influences the optical amplification effect, the module can keep a small overall thickness while obtaining a large optical amplification effect, and the VR device can realize a good field angle, a large eyebox and a high-quality imaging effect, and hence a better user experience.

A short-distance optical amplification module and a near-eye display optical module using the same in the present invention relates to an optical amplification module applicable for short distance and an optical module using the same for near-eye display. The purpose of the present invention is to provide an optical amplification module for large-multiple amplification within a short distance (less than 5 cm) and a near-eye display optical module using the same to achieve super large field of view within a short distance (less than 3 cm). The short-distance optical amplification module in the present invention comprises a first 45 degree phase delay sheet (), a partial-transmission and partial-reflection curved lens (), a second 45 degree phase delay sheet () and a reflective polarizing sheet () which are sequentially arranged. The near-eye display optical module in the present invention comprises a display screen () disposed on the side of the first 45 degree phase delay sheet () away from the partial-transmission and partial-reflection curved lens ().

Short-distance optical amplification module and near-eye display optical module using the same

A bi-sensing optical system capable of transmitting signals for eye and object tracking and/or detection, and/or capable of transmitting signals comprising visible light to an eye of a user and non-visible light for eye tracking and object detection and/or tracking is disclosed herein.

Integrated bi-sensing optical structure for head mounted display

Multiple image projection apparatus are described. A cubic multi-prism beam splitter is provided having diagonal interfaces with one or more PBS elements and/or reflective elements positioned thereon. At least first and second spatial light modulators, such as LCoS SLMs, are positioned adjacent the beam splitter cube. The first and second LCoS spatial light modulators and first and second projection optics systems are configured to output a first modulated image from the first LCoS SLM to the first projection optics system and a second modulated image from the second LCoS spatial light modulator to the second projection optics system. In other embodiments, additional LCoS spatial light modulators and light sources produce 3-D images. Addition of sensors permits user interaction with a projected image which is fed back to a controller to optionally change current or future images displayed by the system.

Mutiple image projection apparatus

An interactive projection device includes a light source configured to emit an input light beam, wherein the light source comprises a visible light emitting device; a first beam splitter configured to split the input light beam into first and second split light beams; a second beam splitter configured to split a scattered light beam received from a surface into third and fourth split light beams; an image forming device configured to produce an image light beam based on the first split light beam and emit the image light beam onto the surface through the first and second splitters, thereby generating a projection image on the surface; and a detector configured to detect the invisible light of the third split light beam, thereby acquiring a scattering image from the surface.

Growing community of inventors

Shenzhen, China

Weiping Tang