CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on and claims priority under 35 USC 119 from Japanese Patent Application No. 2019-039587 filed Mar. 5, 2019.

BACKGROUND

(i) Technical Field

The present disclosure relates to a light-emitting device, an optical device, and an information processing apparatus.

(ii) Related Art

Japanese Unexamined Patent Application Publication No. 2018-54769 describes an imaging device that includes a light source, a light diffusing member that has plural lenses disposed adjacent to one another on a predetermined plane and diffuses light emitted from the light source, and an imaging element that receives light diffused by the light diffusing member and then reflected by a subject, wherein the plural lenses are disposed so that a cycle of an interference fringe of the diffused light is three pixels or less.

SUMMARY

In three-dimensional measurement using a Time of Flight (ToF) method, light emitted from a light source is diffused through a light diffusing member held by a holding unit so that an object to be measured is irradiated with the light, and a three-dimensional shape of the object to be measured is measured based on the reflected light.

The light source used for three-dimensional measurement using a Time of Flight (ToF) method needs to radiate light to a wider range than a light source for simple distance measurement and therefore needs to be a large-output light source.

It is desirable that, for example, a light-emitting device using such a large-output light source efficiently release heat generated by the light source.

Aspects of non-limiting embodiments of the present disclosure relate to a light-emitting device and the like that have a structure that allows heat generated by a light source to be easily released as compared with a case where a holding unit that holds a light diffusing member is not provided on a wire connected to a light source.

Aspects of certain non-limiting embodiments of the present disclosure address the above advantages and/or other advantages not described above. However, aspects of the non-limiting embodiments are not required to address the advantages described above, and aspects of the non-limiting embodiments of the present disclosure may not address advantages described above.

According to an aspect of the present disclosure, there is provided a light-emitting device including a light diffusing member that diffuses light emitted from a light source so that an object to be measured is irradiated with the light; and a holding unit that is provided on plural wires connected to the light source and holds the light diffusing member.

