Optical detection system integrating tonometer and autorefractor

Abstract

The present application provides an optical detection system integrating a tonometer and an automatic optometry device, comprising a first and a second optical module. The first optical module comprises a light source, a first and a second lens group, a mirror, a first beam splitter and a sensor. The first lens group and the mirror are arranged corresponding to the light source. The first beam splitter is arranged corresponding to the mirror, the second lens group and the sensor. The second optical module comprises a second beam splitter and a first to a third optical element. The light source emits incident light which sequentially passes through the first lens group, is reflected by the mirror, passes through the first beam splitter, is reflected by the second beam splitter, passes through the first to the third optical element and then is emitted to the eye. The sensing light from the eye sequentially passes through the third to the first optical element, is reflected by the second beam splitter, is reflected by the first beam splitter and then passes through the second lens group and is emitted to the sensor.

Description

Technical Field

[0001] This invention relates to optical detection, and more particularly to an optical detection system that integrates a tonometer and an autorefractor. Background Technology

[0002] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 The diagram shows a traditional tonometer for measuring intraocular pressure (IOP) and a graph showing the pressure change over time. In the diagram, Ps is the pressure sensor in the system; PD is the monitor for monitoring the flatness (application status) of the cornea in the eye (EYE); 1D-PSD is the monitor for monitoring the position of the cornea in the eye (EYE); and IOP is the measured IOP.

[0003] However, traditional tonometers still cannot be integrated with automated refractometers and other optical devices into a multifunctional optical detection system, which needs further improvement. Summary of the Invention

[0004] In view of this, the present invention proposes an optical detection system that integrates an intraocular tonometer and an automated refractometer to solve the above-mentioned problems encountered by the prior art.

[0005] According to a specific embodiment of the present invention, an optical detection system integrating a tonometer and an automated refractometer is provided. In this embodiment, the optical detection system integrating a tonometer and an automated refractometer includes a first optical module and a second optical module. The first optical module includes a light source, a first lens group, a second lens group, a first reflector, a first beam splitter, and a first sensor. The first lens group and the first reflector are arranged corresponding to the light source. The first beam splitter is arranged corresponding to the first reflector, the second lens group, and the first sensor. The second optical module includes a correspondingly arranged second beam splitter, a first optical element, a second optical element, and a third optical element. Incident light emitted from the light source passes sequentially through the first lens group, is reflected by the first reflector, passes through the first beam splitter, is reflected by the second beam splitter, passes through the first optical element, the second optical element, and the third optical element before being emitted towards the eye. Sensing light from the eye passes sequentially through the third optical element, the second optical element, and the first optical element, is reflected by the second beam splitter, is reflected by the first beam splitter, passes through the second lens group, and is emitted towards the first sensor.

[0006] In one embodiment, the first optical module includes an autorefractor.

[0007] In one embodiment, the second optical module includes a tonometer.

[0008] In one embodiment, air enters between the first optical element and the second optical element of the second optical module.

[0009] In one embodiment, the first optical module further includes a pinhole disposed between the first beam splitter and the second lens group. The sensing light reflected by the first beam splitter passes through the pinhole first and then through the second lens group.

[0010] In one embodiment, the second optical module further includes a third beam splitter, a filter, a third lens group, and a second sensor. The third beam splitter is disposed relative to the second beam splitter, the second sensor is disposed on the side away from the eye, and the filter and the third lens group are sequentially disposed between the third beam splitter and the second sensor.

[0011] In one embodiment, an image from outside the eye can be sequentially transmitted through a third optical element, a second optical element, a first optical element, a second beam splitter, a third beam splitter, a filter, and a third lens group before being projected onto a second sensor to form a video path.

[0012] In one embodiment, the optical detection system further includes a third optical module for providing a Scheimpflug optical path. The third optical module includes a fourth lens group, a slit, a fifth lens group, a fourth beam splitter, and a fifth beam splitter. The slit is disposed between the fourth lens group and the fifth lens group. The fifth beam splitter is disposed corresponding to the first beam splitter and the second beam splitter. The fourth beam splitter is disposed between the fifth beam splitter and the fifth lens group.

[0013] In one embodiment, the Scheimpflug light path passes sequentially through the fourth lens group, the slit, the fifth lens group, and the fourth beam splitter before being reflected by the fifth beam splitter into the second optical module. After being reflected by the second beam splitter, it passes sequentially through the first optical element, the second optical element, and the third optical element before being directed toward the eye.

[0014] In one embodiment, the optical detection system further includes a fourth optical module, which includes a second reflector, a sixth lens group and a fixed end. The second reflector is disposed corresponding to the fourth beam splitter. The sixth lens group is disposed between the second reflector and the fixed end. The fixed end can be moved horizontally to approach or move away from the sixth lens group to generate an optical path difference that passes from the fixed end through the sixth lens group and is reflected by the second reflector to the fourth beam splitter of the third optical module.

[0015] In one embodiment, the optical detection system further includes a fifth optical module, which includes a third reflecting mirror, a sixth beam splitter, and a seventh lens group, wherein the third reflecting mirror is configured corresponding to the third beam splitter, the sixth beam splitter is configured corresponding to the third reflecting mirror, and the seventh lens group is configured corresponding to the sixth beam splitter.

[0016] In one embodiment, the XY-axis aligned path is reflected sequentially by the sixth beam splitter and the third reflector to the third beam splitter of the second optical module after passing through the seventh lens group.

[0017] In one embodiment, the K1 / K2 path is reflected by the third mirror to the third mirror of the second optical module after passing through the sixth beam splitter.

[0018] Compared to existing technologies, the optical detection system proposed in this invention can integrate a tonometer and an autorefractor into the same system through the design of multiple optical modules. It can also provide optical paths such as a video path, a Scheimpflug optical path, and an XY axis alignment path to achieve an integrated multifunctional optical detection system.

[0019] The advantages and spirit of the present invention can be further understood through the following detailed embodiments and accompanying drawings. Attached Figure Description

[0020] Figure 1 and Figure 2 The diagram shows how intraocular pressure is measured using a traditional tonometer, and the graph shows how pressure changes over time.

[0021] Figure 3 This is a schematic diagram of an optical detection system integrating an intraocular tonometer and an automated refractometer, according to a specific embodiment of the present invention.

[0022] Explanation of key component symbols:

[0023] 3…Optical Inspection System

[0024] 31…First Optical Module

[0025] 32…Second optical module

[0026] 33…Third Optical Module

[0027] 34…Fourth Optical Module

[0028] 35…Fifth Optical Module

[0029] LS…light source

[0030] N1…First lens group

[0031] N2…Second lens group

[0032] M1…First reflecting mirror

[0033] BS1…First Beam Spectroscope

[0034] PH…pinhole

[0035] SH…First Sensor

[0036] BS2…Second Beam Spectroscope

[0037] BS3… Third beam splitter

[0038] OE1…First Optical Component

[0039] OE2…Second optical element

[0040] OE3…Third Optical Component

[0041] FT… filter

[0042] N3…Third lens group

[0043] SR…Second Sensor

[0044] N4…Fourth lens group

[0045] SL…slit

[0046] N5…Fifth Lens Group

[0047] BS4…Fourth Beam Spectroscope

[0048] BS5… Fifth Beam Spectroscope

[0049] M2…Second Reflector

[0050] N6…Sixth Lens Group

[0051] FX… Fixed End

[0052] M3…Third Reflector

[0053] BS6…Sixth Beam Spectroscope

[0054] N7…Seventh Lens Group

[0055] XY…XY axis alignment path

[0056] K1 / K2…K1 / K2 path

[0057] AIR…air

[0058] SIP…Scheimpflug optical path

[0059] L…incident light

[0060] S…sensing light

[0061] EYE…eyes

[0062] Ps…pressure sensor within the system

[0063] PD…monitor

[0064] 1D-PSD…monitor

[0065] IOP...intraocular pressure measured

[0066] IM…Images outside the eye Detailed Implementation

[0067] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Elements / components referred to by the same or similar reference numerals in the drawings and embodiments are used to represent the same or similar parts.

[0068] According to a specific embodiment of the present invention, there is an optical detection system that integrates an intraocular tonometer and an automatic refractometer. The system can integrate the intraocular tonometer and the automatic refractometer into the same system through the design of multiple optical modules. This optical detection system can be implemented as a single optical detection device or a combination of multiple optical detection devices, without any specific limitations.

[0069] In this embodiment, the optical detection system 3 integrating a tonometer and an autorefractor includes a first optical module 31, a second optical module 32, a third optical module 33, a fourth optical module 34, and a fifth optical module 35. The first optical module 31 includes an autorefractor, and the second optical module 32 includes a tonometer.

[0070] The first optical module 31 includes a light source LS, a first lens group N1, a second lens group N2, a first reflector M1, a first beam splitter BS1, a pinhole PH, and a first sensor SH. The first lens group N1 and the first reflector M1 are configured corresponding to the light source LS. The first beam splitter BS1 is configured corresponding to the first reflector M1, the pinhole PH, the second lens group N2, and the first sensor SH. In practical applications, the light source LS can be a laser light source, the first lens group N1 can include a single biconvex lens, and the second lens group N2 can include two biconvex lenses and a microlens array, but is not limited thereto.

[0071] The second optical module 32 includes a second beam splitter BS2, a third beam splitter BS3, a first optical element OE1, a second optical element OE2, a third optical element OE3, a filter FT, a third lens group N3, and a second sensor SR. The second beam splitter BS2, the first optical element OE1, the second optical element OE2, and the third optical element OE3 are arranged sequentially and correspondingly to each other. The third optical element OE3 is positioned closer to the eye (EYE). Air (AIR) enters between the first optical element OE1 and the second optical element OE2. The third beam splitter BS3 is positioned opposite the second beam splitter BS2. The second sensor SR is positioned on the opposite side, away from the eye (EYE). The filter FT and the third lens group N3 are sequentially positioned between the third beam splitter BS3 and the second sensor SR.

[0072] In practical applications, the first optical element OE1 may include a focusing lens to focus light onto the second optical element OE2; the filter FT is used to filter the light to remove light of a specific wavelength; the third lens group N3 may include a combination of multiple different types of lenses, such as a convex-planar lens, a biconcave lens, a biconvex lens, and a combination of convex-concave lenses, but is not limited thereto.

[0073] When the light source LS of the first optical module 31 emits incident light L, the incident light L sequentially passes through the first lens group N1, is reflected by the first reflecting mirror M1, passes through the first beam splitter BS1, and exits the first optical module 31. Then, after the incident light L enters the second optical module 32, it is sequentially reflected by the second beam splitter BS2, passes through the first optical element OE1, the second optical element OE2, and the third optical element OE3, and then reaches the eye EYE. If the above-mentioned optical path from the light source LS to the eye EYE is defined as the first optical path, then the incident light L emitted by the light source LS reaches the eye EYE along the first optical path.

[0074] When incident light L hits the eye EYE, the eye EYE reflects the incident light L to form sensing light S, which enters the second optical module 32. The sensing light S passes sequentially through the third optical element OE3, the second optical element OE2, and the first optical element OE1 within the second optical module 32, and is reflected by the second beam splitter BS2 before exiting the second optical module 32. Then, when the sensing light S enters the first optical module 31, it is reflected by the first beam splitter BS1, passes through the pinhole PH and the second lens group N2, and is then directed towards the first sensor SH.

[0075] Furthermore, the image IM from outside the eye (e.g., the iris) can be sequentially transmitted within the second optical module 32 through the third optical element OE3, the second optical element OE2, the first optical element OE1, the second beam splitter BS2, the third beam splitter BS3, the filter FT, and the third lens group N3 before being projected onto the second sensor SR to form a video path.

[0076] The third optical module 33 includes a fourth lens group N4, a slit SL, a fifth lens group N5, a fourth beam splitter BS4, and a fifth beam splitter BS5. The slit SL is disposed between the fourth lens group N4 and the fifth lens group N5. The fifth beam splitter BS5 corresponds to the first beam splitter BS1 and the second beam splitter BS2. The fourth beam splitter BS4 is disposed between the fifth beam splitter BS5 and the fifth lens group N5. In practical applications, the fourth lens group N4 may include a single biconvex lens, and the fifth lens group N5 may include a single biconvex lens, but these are not limiting.

[0077] The third optical module 33 provides the Scheimpflug optical path SIP. The Scheimpflug optical path SIP passes sequentially through the fourth lens group N4, the slit SL, the fifth lens group N5, and the fourth beam splitter BS4, and is then reflected by the fifth beam splitter BS5 into the second optical module 32. After being reflected by the second beam splitter BS2, it passes sequentially through the first optical element OE1, the second optical element OE2, and the third optical element OE3 before being directed toward the eye EYE.

[0078] The fourth optical module 34 includes a second reflecting mirror M2, a sixth lens group N6, and a fixed end FX. The second reflecting mirror M2 is positioned corresponding to the fourth beam splitter BS4. The sixth lens group N6 is positioned between the second reflecting mirror M2 and the fixed end FX. The fixed end FX can be moved horizontally to move closer to or further away from the sixth lens group N6 to generate an optical path difference that occurs when the optical path from the fixed end FX passes through the sixth lens group N6 and is reflected by the second reflecting mirror M2 to the fourth beam splitter BS4 of the third optical module 33. In practical applications, the sixth lens group N6 may include two biconvex lenses, but is not limited to this.

[0079] The fifth optical module 35 includes a third reflecting mirror M3, a sixth beam splitter BS6, and a seventh lens group N7. The third reflecting mirror M3 is configured corresponding to the third beam splitter BS3. The sixth beam splitter BS6 is configured corresponding to the third reflecting mirror M3. The seventh lens group N7 is configured corresponding to the sixth beam splitter BS6. In practical applications, the seventh lens group N7 may include two biconvex lenses, but is not limited thereto.

[0080] The XY-axis aligned path XY passes through the seventh lens group N7 and is sequentially reflected by the sixth beam splitter BS6 and the third reflector M3 to the third beam splitter BS3 of the second optical module 32. The K1 / K2 path K1 / K2 passes through the sixth beam splitter BS6 and is reflected by the third reflector M3 to the third beam splitter BS3 of the second optical module 32.

[0081] Compared to existing technologies, the optical detection system proposed in this invention can integrate a tonometer and an autorefractor into the same system through the design of multiple optical modules. It can also provide optical paths such as a video path, a Scheimpflug optical path, and an XY axis alignment path to achieve an integrated multifunctional optical detection system.

[0082] The embodiments described above are only for the purpose of illustrating the present invention and are not intended to limit it. Without departing from the spirit and scope of the present invention, various simple modifications and alterations made by those skilled in the art based on the scope of the patent application and the description of the invention should still be included within the scope of protection claimed in the patent application documents.

Claims

1. An optical detection system integrating a tonometer and an automated refractometer, characterized in that, include: The first optical module includes a light source, a first lens group, a second lens group, a first reflector, a first beam splitter, a pinhole, and a first sensor. The first lens group and the first reflector are arranged corresponding to the light source, and the first beam splitter is arranged corresponding to the first reflector, the pinhole, the second lens group, and the first sensor. The light source emits incident light. as well as The second optical module includes a second beam splitter, a first optical element, a second optical element, and a third optical element. The second beam splitter, the first optical element, the second optical element, and the third optical element are arranged in a sequential and corresponding manner. The third optical element is located on the side closer to the eye, and air can enter between the first optical element and the second optical element. The incident light emitted by the light source sequentially passes through the first lens group, is reflected by the first reflector, and exits the first optical module through the first beam splitter. After the incident light enters the second optical module, it is sequentially reflected by the second beam splitter, passes through the first optical element, the second optical element, and the third optical element, and then shines on the eye. The sensing light formed by the eye reflecting the incident light enters the second optical module, and then sequentially passes through the third optical element, the second optical element, and the first optical element, is reflected by the second beam splitter, and exits the second optical module. After the sensing light enters the first optical module, it is reflected by the first beam splitter, passes through the pinhole, passes through the second lens group, and then shines on the first sensor.

2. The optical detection system integrating an intraocular tonometer and an automated refractometer as described in claim 1, characterized in that, The first optical module includes an automated refractometer.

3. The optical detection system integrating a tonometer and an automated refractometer as described in claim 1, characterized in that, The second optical module includes a tonometer.

4. The optical detection system integrating an intraocular tonometer and an automated refractometer as described in claim 1, characterized in that, The pinhole is located between the first beam splitter and the second lens group. The sensing light reflected by the first beam splitter first passes through the pinhole and then through the second lens group.

5. The optical detection system integrating an intraocular tonometer and an automated refractometer as described in claim 1, characterized in that, The second optical module also includes a third beam splitter, a filter, a third lens group, and a second sensor. The third beam splitter is positioned relative to the second beam splitter, and the second sensor is positioned on the side away from the eye. The filter and the third lens group are sequentially positioned between the third beam splitter and the second sensor.

6. The optical detection system integrating a tonometer and an automated refractometer as described in claim 5, characterized in that, Images from outside the eye can be sequentially transmitted through the third optical element, the second optical element, the first optical element, the second beam splitter, the third beam splitter, the filter, and the third lens group before being projected onto the second sensor to form a video path.

7. The optical detection system integrating a tonometer and an automated refractometer as described in claim 1, characterized in that, Also includes: The third optical module is used to provide the Scheimpflug optical path. The third optical module includes a fourth lens group, a slit, a fifth lens group, a fourth beam splitter, and a fifth beam splitter. The slit is disposed between the fourth lens group and the fifth lens group. The fifth beam splitter is disposed corresponding to the first beam splitter and the second beam splitter. The fourth beam splitter is disposed between the fifth beam splitter and the fifth lens group.

8. The optical detection system integrating a tonometer and an automated refractometer as described in claim 7, characterized in that, The Scheimpflug light path passes sequentially through the fourth lens group, the slit, the fifth lens group, and the fourth beam splitter, and is then reflected by the fifth beam splitter into the second optical module. After being reflected again by the second beam splitter, it passes sequentially through the first optical element, the second optical element, and the third optical element before being directed toward the eye.

9. The optical detection system integrating a tonometer and an automated refractometer as described in claim 7, characterized in that, Also includes: The fourth optical module includes a second reflector, a sixth lens group, and a fixed end. The second reflector is disposed opposite to the fourth beam splitter. The sixth lens group is disposed between the second reflector and the fixed end. The fixed end can be moved horizontally to approach or move away from the sixth lens group to generate an optical path difference that passes from the fixed end through the sixth lens group and is reflected by the second reflector to the fourth beam splitter of the third optical module.

10. The optical detection system integrating a tonometer and an automated refractometer as described in claim 5, characterized in that, Also includes: The fifth optical module includes a third reflecting mirror, a sixth beam splitter, and a seventh lens group. The third reflecting mirror is configured corresponding to the third beam splitter, the sixth beam splitter is configured corresponding to the third reflecting mirror, and the seventh lens group is configured corresponding to the sixth beam splitter.

11. The optical detection system integrating a tonometer and an automated refractometer as described in claim 10, characterized in that, The XY-axis aligned path, after passing through the seventh lens group, is sequentially reflected by the sixth beam splitter and the third reflector to the third beam splitter of the second optical module.

12. The optical detection system integrating a tonometer and an automated refractometer as described in claim 10, characterized in that, After passing through the sixth beam splitter, the K1 / K2 path is reflected by the third mirror to the third beam splitter of the second optical module.

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