Light beam emission apparatus, optical scanning apparatus including the light beam emission apparatus, and image forming apparatus including the optical scanning apparatus

摘要

In a light beam emission apparatus, the height of an elastic member configured to fill a clearance between a laser element and a laser holder is longer than the distance from a start position of press fitting of the laser element to a surface of the laser holder with which the elastic member comes into contact.

主权项

1. A light beam emission apparatus, comprising:
a light source configured to emit a light beam; a holding member including an abutting portion and a fitting portion in which the light source is fitted; and an elastic member configured to fill a clearance between the light source and the holding member by being elastically deformed when the elastic member contacts both the light source and the abutting portion in a state in which the light source is fitted into the fitting portion, wherein the elastic member is elastically deformed by being compressed by the light source and the abutting portion when the light source is fitted into the fitting portion, and wherein a length of the elastic member before being elastically deformed in an insertion direction of the light source into the fitting portion is longer than a length from an insertion port of the fitting portion for the light source to the abutting portion so that the fitting portion and a fitted portion of the light source come into contact with each other after the elastic member begins to be elastically deformed or simultaneously when the elastic member begins to be elastically deformed by contacting both the light source and the abutting portion, wherein the abutting portion has a recessed groove to receive the elastically deformed elastic member.