Virtual image display system

• US 10,194,860 B2
• Filed: 06/03/2016
• Issued: 02/05/2019
• Est. Priority Date: 09/11/2013
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Wang, Chy-Lin, Tiao, Kuo-Tung, Chen, Tian-Yuan, Chung, Lung-Pin, Lin, Chun-Chuan, Chen, Jyh-Chern, Chang, Chi-Shen, Yang, Ching-Chieh
• Primary Examiner(s): Harrington, Alicia M
• Application Number:
  US15/173,571
• Publication Number:
  US 20160278695A1
• Time in Patent Office: 977 Days
• CPC Class Codes: A61B 2034/107 Visualisation of planned trajectories or target regions
• CPC Class Codes: A61B 2090/364 Correlation of different images or relation of image positions in respect to the body
• CPC Class Codes: A61B 2090/368 changing the image on a display according to the operator's position
• CPC Class Codes: A61B 2090/372 Details of monitor hardware
• CPC Class Codes: A61B 2090/502 Headgear, e.g. helmet, spectacles
• CPC Class Codes: A61B 34/25 User interfaces for surgical systems
• CPC Class Codes: A61B 5/0086 using infrared radiation
• CPC Class Codes: A61B 5/489 Blood vessels
• CPC Class Codes: A61B 5/7445 Display arrangements, e.g. multiple display units
• CPC Class Codes: A61B 5/745 using a holographic display
• CPC Class Codes: A61B 90/50 Supports for surgical instruments, e.g. articulated arms
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0127 comprising devices increasing the depth of field
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 23/2461 Illumination
• CPC Class Codes: G02B 23/2484 Arrangements in relation to a camera or imaging device processing or control of video signals generated by an endoscope H04N23/60, H04N23/70
• CPC Class Codes: G02B 27/0149 characterised by mechanical features G02B27/0176 takes precedence
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0172 : characterised by optical features
• CPC Class Codes: G02B 27/0176 : characterised by mechanical features
• CPC Class Codes: G02B 27/286 : for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another G02B5/3083 takes precedence; light guide coupling means utilising polarising elements G02B6/34
• CPC Class Codes: G02B 3/14 : of variable focal length
• CPC Class Codes: G02B 5/30 : Polarising elements light-modulating devices with active elements G02F1/00
• CPC Class Codes: G02B 6/00 : Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
• CPC Class Codes: H04N 13/204 : using stereoscopic image cameras stereoscopic photography G03B35/00
• CPC Class Codes: H04N 23/20 : for generating image signals from infrared radiation only
• CPC Class Codes: H04N 23/56 : provided with illuminating means
• CPC Class Codes: H04N 23/57 : Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
• CPC Class Codes: H04N 5/33 : Transforming infrared radiation cameras or camera modules for generating image signals from infrared radiation H04N23/20; circuitry of SSIS for transforming infrared radiation into image signals H04N25/20

Abstract

A virtual image display system adapted for venipuncture applications is provided. The virtual image display system includes at least one infrared light source, at least one image sensing module, and at least one virtual image display module. The at least one infrared light source is configured to emit at least one infrared light to a tissue having a vein. The at least one image sensing module is configured to receive the infrared light from the tissue so as to sense an image of the vein. The at least one virtual image display module is disposed in front of at least one eye of a user. The at least one virtual image display module includes an image display unit configured to show an image of the vein to the at least one eye of the user.

Claims

1. A virtual image display system adapted for venipuncture applications, the virtual image display system comprising:

at least one infrared light source configured to emit at least one infrared light to a tissue having a vein;

at least one image sensing module configured to receive the infrared light from the tissue so as to sense an image of the vein;

a microstructure optical element disposed in front of the infrared light source and configured to control a light divergence angle of the infrared light;

a divergence angle adjustment mechanism connected to the microstructure optical element and configured to adjust a distance between the infrared light source and the microstructure optical element; and

at least one virtual image display module disposed in front of at least one eye of a user, the at least one virtual image display module comprising;

an image display unit configured to show an image of the vein to the at least one eye of the user.

2. The virtual image display system of claim 1, wherein the at least one infrared light source is a plurality of infrared light sources surrounding the image sensing module.

3. The virtual image display system of claim 1, wherein the at least one infrared light source is a plurality of infrared light sources configured to emit infrared lights having at least two wavelengths.

4. The virtual image display system of claim 1, wherein the at least one image sensing module comprises two image sensing modules configured to sense a three-dimensional image of the tissue, and the at least one virtual image display module are two virtual image display modules configured to display the three-dimensional image of the tissue.

5. The virtual image display system of claim 1, wherein the image sensing module comprises a fixed focus lens or a zoom lens.

6. The virtual image display system of claim 1 further comprising a spectacle frame, wherein the virtual image display module, the infrared light source, and the image sensing module are disposed on the spectacle frame.

7. The virtual image display system of claim 1 further comprising a headband connected to the virtual image display module, the infrared light source, and the image sensing module.

8. The virtual image display system of claim 1 further comprising:

a first polarizer disposed in front of the infrared light source and configured to allow at least a part of the infrared light having a first polarization direction from the infrared light source to pass through; and

a second polarizer disposed in front of the image sensing module and configured to allow a part of the infrared light having a second polarization direction from the tissue to pass through and be transmitted to the image sensing module.

9. The virtual image display system of claim 8 further comprising at least one transmission axis adjustment mechanism connected to at least one of the first polarizer and the second polarizer, and configured to adjust at least one transmission axes of the first polarizer and the second polarizer.

10. The virtual image display system of claim 1 further comprising a flexible tube, wherein the infrared light source is connected to a first end of the flexible tube, and a second end of the flexible tube is connected to the virtual image display module or to a base.

11. The virtual image display system of claim 10, wherein the image sensing module is connected to the first end of the flexible tube.

12. The virtual image display system of claim 1, wherein the image display unit is configured to provide an image beam, and the at least one virtual image display module further comprises a beam splitting unit disposed on transmission paths of the image beam and an object beam from an environment object, the beam splitting unit causing at least a part of the object beam to be transmitted to the eye, and the beam splitting unit causing at least a part of the image beam to be transmitted to the eye to display a virtual image.

13. The virtual image display system of claim 12 being adapted for medical surgical applications, with which a surgical device is operated, wherein the image beam comprises at least one type of surgical information.

14. The virtual image display system of claim 12, further comprising an ambient light adjustment unit located on the transmission path of the object beam for adjusting a ratio of a brightness of the at least a part of the object beam to a brightness of the at least a part of the image beam.

15. The virtual image display system of claim 14, wherein the ambient light adjustment unit comprises at least one of at least one filter, a polarizer, a shutter, and a photochromic lens for adjusting the brightness of the at least a part of the object beam reflected to the eye and forming a blocking area of the object beam.

16. The virtual image display system of claim 15, wherein the at least one filter is a plurality of filters, a part of the filters have different sizes, and the user selects one of the filters to switch a size of the blocking area of the object beam.

17. The virtual image display system of claim 14, further comprising a control storage module electrically connected to the virtual image display module, the control storage module comprising:

a storage unit for storing the at least one type of surgical information; and

a control unit controlling the ambient light adjustment unit to adjust an ambient light, controlling the storage unit to adjust an output of the surgical information, and controlling a switching of an imaging position and a size of an image frame of the virtual image.

18. The virtual image display system of claim 17, wherein the ambient light adjustment unit comprises a liquid crystal unit for adjusting the brightness or a polarization state of the at least a part of the object beam passing through a partial area of the liquid crystal unit and forming a blocking area of the object beam in the eye.

19. The virtual image display system of claim 18, wherein the control unit adjusts a range of the partial area of the liquid crystal unit to switch the size of the blocking area of the object beam.