Claims:1. An ophthalmologic imaging apparatus (100) to capture retinal images of a subject's eye (E), the ophthalmologic imaging apparatus (100) comprising:
a photographic light source (115) and an observation light source (120), wherein the photographic light source (115) and the observation light source (120) are arranged on an illumination axis (105);
a first shield (125) placed at a distance from a first condenser lens (140), wherein the first condenser lens (140) is placed in front of the photographic light source (115) on the illumination axis (105), and wherein the first shield (125) has a central opaque portion (182) on which the observation light source (120) is mounted and an outer pair of coaxial annular transparent regions (190);
a diffuser (135) placed in front of the observation light source (120) to diffuse an illumination light beam emitted from the observation light source (120);
a second shield (130) mounted on the diffuser (135), wherein the second shield (130) has a central opening portion (194) and an outer pair of coaxial annular opaque portion (197), and the second shield creates an annular illumination pattern from the illumination light beam;
a porosity mirror (165) mounted on a porosity tube (170), wherein the porosity mirror (165) is at an angle with respect to an imaging axis (110) and the porosity tube (170) is substantially perpendicular to the illumination axis (105); and
an imaging module (181) aligned along the imaging axis (110) and perpendicular to the illumination axis (105), wherein the imaging module (181) captures the retinal images of the subject’s eye (E).

2. The ophthalmologic imaging apparatus (100) as claimed in claim 1, wherein the observation light source (120) comprises plurality of LEDs (205,310), and the ophthalmologic imaging apparatus (100) comprises a control circuit (190) control the operation of the plurality of LEDs (205,310).

3. The ophthalmologic imaging apparatus (100) as claimed in claim 1, wherein the observation light source (120) comprises a halogen lamp.

4. The ophthalmologic imaging apparatus (100) as claimed in claim 2, wherein the plurality of LEDs (205,310) are arranged on the central opaque portion (182) of the first shield (125), and each LED of the plurality of LEDs (205,310) operate at a predefined wavelength of light.

5. The ophthalmologic imaging apparatus (100) as claimed in claim 4, wherein one or more of the plurality of LEDs (205,310) are infrared LEDs to operate the ophthalmologic imaging apparatus (100) in a non-mydriatic mode.

6. The ophthalmologic imaging apparatus (100) as claimed in claim 4 wherein one or more of the plurality of LEDs (205,310) are white LEDs to operate the ophthalmologic imaging apparatus (100) in a mydriatic mode.

7. The ophthalmologic imaging apparatus (100) as claimed in claim 5, wherein the infrared LEDs operate at a wavelength of light greater than 700nm.

8. The ophthalmologic imaging apparatus as claimed in claim 2, wherein the observation light source (120) comprises a rotatable turret assembly (305) mounted with the plurality of LED’s (310) of one or more predefined wavelengths, and a rotational axis (315) of the rotatable turret assembly (305) is parallel to the illumination axis (105) and separated from the illumination axis (105) is such a way so that the center of each of the LEDs (310) is aligned on the illumination axis (105) when the rotatable turret assembly (305) is rotated to select one or more LEDs of the plurality of LEDs (310) operating a specific wavelength.

9. The ophthalmologic imaging apparatus (100) as claimed in claim 1, wherein the ophthalmologic imaging apparatus (100) comprises a transparent plate (155) having a black dot absorber and the transparent plate (155) is placed at a distance from the second shield (130).

10. The ophthalmologic imaging apparatus (100) as claimed in claim 9, wherein the ophthalmologic imaging apparatus (100) comprises a second condenser lens (145) placed between the transparent plate (155) and the second shield (130).

11. The ophthalmologic imaging apparatus (100) as claimed in claim 10, wherein the ophthalmologic imaging apparatus (100) comprises at least one projection lens (150) placed between the porosity tube (170) and the transparent plate (155).

12. The ophthalmologic imaging apparatus (100) as claimed in the claim 1, wherein the first shield (125) and the second shield (130) are ring shaped.

13. The ophthalmologic imaging apparatus (100) as claimed in the claim 1, wherein the observation light source (120) is mounted at center on the central opaque portion (182) of the first shield (125) along the illumination axis (105).

14. The ophthalmologic imaging apparatus (100) as claimed in the claim 1, wherein the observation light source (120) is mounted between center and periphery of the central opaque portion (182) of the first shield (125) along the illumination axis (105).
, Description:As Attached