The present invention provides an imaging device including a photographic optical system having a zoom function, an auxiliary light irradiation device which includes an auxiliary light source emitting auxiliary light and which irradiates the auxiliary light towards a subject, a range finding device which makes the auxiliary light reflected by the subject incident on the photographic optical system to perform a focusing operation, and an auxiliary light control device which controls at least one of emitted light quantity of the auxiliary light and irradiation range of the auxiliary light in accordance with a zoom position of the photographic optical system.
1. An imaging device comprising:
an image sensor which has a light receiving surface:
a photographic optical system which forms an image of a photographic subject on the light receiving surface of the image sensor, the photographic optical system includes a zoom lens to perform zoom operation of the image of the subject;
an auxiliary light irradiation device which includes an auxiliary light source emitting an auxiliary light and which irradiates the auxiliary light towards the subject;
a range finding device which makes said auxiliary light reflected by said subject incident on said photographic optical system to perform a focusing operation; and
an auxiliary light control device which controls at least one of emitted light quantity of said auxiliary light and irradiation range of said auxiliary light in accordance with a zoom position of said zoom lens.
2. The imaging device according to claim 1 , wherein said auxiliary light control device comprises an applied voltage change device which changes a power supply voltage applied to said auxiliary light source in accordance with the zoom position of said photographic optical system.
3. The imaging device according to claim 1 , wherein said auxiliary light control device comprises a current quantity control device which controls the quantity of current flowing through said auxiliary light irradiation device in accordance with the zoom position of said photographic optical system.
4. The imaging device according to claim 2 , wherein said auxiliary light control device comprises a current quantity control device which controls the quantity of current flowing through said auxiliary light irradiation device in accordance with the zoom position of said photographic optical system.
5. The imaging device according to claim 1 , wherein said auxiliary light irradiation device comprises a plurality of auxiliary sources, and
wherein said auxiliary light control device comprises a lighting light source number change device which changes the number of said auxiliary light sources that are turned on in accordance with the zoom position of said photographic optical system.
6. The imaging device according to claim 2 , wherein said auxiliary light irradiation device comprises a plurality of auxiliary light sources, and
wherein said auxiliary light control device comprises a lighting light source number change device which changes the number of said auxiliary sources that are turned on in accordance with the zoom position of said photographic optical system.
7. The imaging device according to claim 3 , wherein said auxiliary light irradiation device comprises a plurality of auxiliary light sources, and
wherein said auxiliary light control device comprises a lighting light source number change device which changes the number of said auxiliary light sources that are turned on in accordance with the zoom position of said photographic optical system.
8. The imaging device according to claim 4 , wherein said auxiliary light irradiation device comprises a plurality of auxiliary light sources, and
wherein said auxiliary light control device comprises a lighting light source number change device which changes the number of said auxiliary light sources that are turned on in accordance with the zoom position of said photographic optical system.
9. The imaging device according to claim 1 , wherein said auxiliary light irradiation device comprises a plurality of irradiation lenses irradiating said auxiliary light irradiated from said auxiliary light source to said subject, and
wherein said auxiliary light control device controls the irradiation range of said auxiliary light by exchanging or combining said plurality of irradiation lenses.
10. The imaging device according to claim 2 , wherein said auxiliary light irradiation device comprises a plurality of irradiation lenses irradiating said auxiliary light irradiated from said auxiliary light source to said subject, and
wherein said auxiliary light control device controls the irradiation range of said auxiliary light by exchanging or combining said plurality of irradiation lenses.
11. The imaging device according to claim 3 , wherein said auxiliary light irradiation device comprises a plurality of irradiation lenses irradiating said auxiliary light irradiated from said auxiliary light source to said subject, and
wherein said auxiliary light control device controls the irradiation range of said auxiliary light by exchanging or combining said plurality of irradiation lenses.
12. The imaging device according to claims 4 , wherein said auxiliary light irradiation device comprises a plurality of irradiation lenses irradiating said auxiliary light irradiated from said auxiliary light source to said subject, and
wherein said auxiliary light control device controls the irradiation range of said auxiliary light by exchanging or combining said plurality of irradiation lenses.
13. The imaging device according to claim 5 , wherein said auxiliary light irradiation device comprises a plurality of irradiation lenses irradiating said auxiliary light irradiated from said auxiliary light source to said subject, and
wherein said auxiliary light control device controls the irradiation range of said auxiliary light by exchanging or combining said plurality of irradiation lenses.
14. The imaging device according to claim 6 , wherein said auxiliary light irradiation device comprises a plurality of irradiation lenses irradiating said auxiliary light irradiated from said auxiliary light source to said subject, and
wherein said auxiliary light control device controls the irradiation range of said auxiliary light by exchanging or combining said plurality of irradiation lenses.
15. The imaging device according to claim 7 , wherein said auxiliary light irradiation device comprises a plurality of irradiation lenses irradiating said auxiliary light irradiated from said auxiliary light source to said subject, and
wherein said auxiliary light control device controls the irradiation range of said auxiliary light by exchanging or combining said plurality of irradiation lenses.
16. The imaging device according to claim 8 , wherein said auxiliary light irradiation device comprises a plurality of irradiation lenses irradiating said auxiliary light irradiated from said auxiliary light source to said subject, and
wherein said auxiliary light control device controls the irradiation range of said auxiliary light by exchanging or combining said plurality of irradiation lenses.
17. The imaging device according to claim 1 , further comprising:
an electronic flash light source,
an electronic flash light control device which controls the light emitted by said electronic flash light source,
wherein said electronic flash light control device controls said electronic flash light source to emit light incident to said photographic optical system to perform an image capture operation.
18. The imaging device according to claim 9 , wherein said zoom lens is a lens separate from said plurality of irradiation lenses.